Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2022-04-23

The table below contains the significant transmission outages submitted as tentative to the AESO.
These Outages have not yet necessarily been approved, but are listed for awareness and coordination purposes.
An Outage has been considered significant for this table if it meets any one (1) or more of the following criteria:
  1. it affects a transmission facility operating at two hundred and forty (240) kV or greater;
  2. it affects an intertie;
  3. it affects an element connecting facilities owned by two (2) or more different legal owners of transmission facilities;
  4. it affects an element that connects a generating unit or an aggregated generating facility to the interconnected electric system;
  5. it requires the ISO to issue a dispatch or directive for generation in order to facilitate the planned outage;
  6. it affects a cutplane limit;
  7. it limits or reduces the operability of a synchronous condenser, static VAr compensator, static compensator or other similar dynamic device; or
  8. it affects high voltage direct current facilities.
Note: Where a transmission outage requires generation curtailments, the adjustments to generation will typically happen in the hours before the scheduled transmission outage and in the hour after the element is returned to service.

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Owner From To Duration Element Scheduled Activity Affected Intertie
ATCO 09-Dec-21 13:00 01-May-22 17:00 143.13 Days
Continuous
863s 902T (863s Paintearth) forced outage and troubleshooting  
ALTALINK, EPCOR 11-Apr-22 07:00 29-Apr-22 17:00 18.42 Days
Continuous
1057L (89s Ellerslie - 657s Summerside), 657s T2 (657s Summerside) continuation of 240 kV ring, re-configuration for SE expansion project (P2133)  
AIRLIQUIDE, SHELL 11-Apr-22 09:00 23-Apr-22 17:30 12.35 Days
Continuous
ALC03L (402s Scotford Expansion - 408s Air Liquide Scotford), 402s 702T (402s Scotford Expansion 1) 702T, breaker maintenance, trip coil & relay testing  
ATCO 18-Apr-22 08:00 25-Apr-22 08:00 7 Days
Continuous
2075s 900SST1 (2075s Newell), 2075s 920 (2075s Newell), 2075s 921 (2075s Newell) PRC relay testing on 20D02 diameter
- station service transformer protection
 
EPCOR 19-Apr-22 07:00 23-Apr-22 17:00 4.42 Days
Continuous
816s T1 (816s Petrolia), 816s P2401 (816s Petrolia), 816s P2402 (816s Petrolia) TX1 and arrestor doble, PAB1 disconnect maintenance  
ALTALINK 19-Apr-22 07:00 23-Apr-22 18:00 4.46 Days
Continuous
753L (65s - 253s) - GOI, 753L (65s High River - 253s Blackie) Insulator washing on Structures #14 - 38, 141 - 143, 153 - 156, 158 - 164, 169 - 174, 219 - 222  
ATCO 19-Apr-22 08:00 15-May-22 12:00 26.17 Days
Continuous
813s 905 (813s Little Smoky), 813s 906 (813s Little Smoky), 9L11 (813s Little Smoky - 834s Wesley Creek) 813S Little Smoky rebuild  
SUNCOR 25-Apr-22 06:00 02-May-22 18:00 7.5 Days
Continuous
29EDD94;29-952-9704 29EDD94;29-952-9705 29PT-407 to be done consecutively one after the other
29EDD94;29-952-9704 MAIN & TEST;PM 10y
29EDD94;29-952-9705 MAIN & TEST;PM 10y
29EDD94;29PT-407 SYSTEM;PM 5y,10y
 
ALTALINK 25-Apr-22 07:00 25-Apr-22 17:30 10.5 Hours
Daily
510s2852 GOI, 510s 2852 (510s Sunnybrook) Install, wire, test and commission new SEL-2411  
EPCOR 25-Apr-22 07:00 26-Apr-22 17:00 1.42 Days
Continuous
BDS18 and Bellamy TX2 @ Bellamy E814S and Rossdale, 814s T2 (814s Bellamy) BDS18 Repair/Maintenance, Doble Bellamy TX2 PT  
EPCOR 25-Apr-22 07:00 29-Apr-22 17:00 4.42 Days
Continuous
1098L, J2407, PM2401, PM2402 @ Jasper Terminal E805S and Poundmaker, 1098L (805s Jasper - Poundmaker) Jasper 1098L CVT LCR and Poundmaker/Jasper 1098L Zone Doble and PMDS2/PMDS3/PMDS9 Disconnect Maintenance  
ALTALINK 25-Apr-22 07:00 09-May-22 18:00 14.46 Days
Continuous
964L (244s - 251s) - GOI, 964L (244s Bowmanton - 251s Whitla) Removing and installing new protections for the future 1024s being tapped off 964L; Closing 964AL Open Point 'A'  
CMH 25-Apr-22 07:30 27-Apr-22 09:00 2.06 Days
Continuous
MHS9 T11 (MHS9 Power Plant), MH-6L (MH69s-1 Power Plant Switchyard - MHS9 Power Plant) PRC-005 - tapchanger maintenance  
ATCO 25-Apr-22 08:00 29-Apr-22 15:00 4.29 Days
Continuous
2075S 900BS2, 2075s 240kV Bus 900BS2 ( 2075s Newell) PRC Relay Testing on 20D02 Diameter
- 920, 921, 906, 912, 918 and 923 Breaker Fail Protection will all be tested as a result of PRC-005 Testing
 
ALTALINK, Lethbridge 25-Apr-22 08:15 28-Apr-22 17:45 3.4 Days
Continuous
370s 138kV BUS 1 & T1(18421) GOI, 172L (181s Chinook - 370s North Lethbridge), 207L (111s Coalbanks - 370s North Lethbridge), 770L (254s Coaldale - 370s North Lethbridge), 370s T1 (370s North Lethbridge) Install a new MOD switch between 138kV Bus 1 and 370s3 for future 370s T1 high side CB to avoid having to take this outage again (P7073)  
ATCO 25-Apr-22 09:00 26-Apr-22 14:00 29 Hours
Continuous
888S 906, 888s 906 (888s Dover) RAS and DFR addition to 9L74 on Breaker 906  
BCH 25-Apr-22 09:00 29-Apr-22 17:00 4.33 Days
Continuous
5L91 (Ashton Creek - Selkirk) station DS inspection of SEL 5D23 AB-BC
BCH 25-Apr-22 09:00 02-May-22 17:00 7.33 Days
Continuous
5L91 (Ashton Creek - Selkirk) flashed insulator replacements AB-BC
Saskpower 25-Apr-22 10:00 29-Apr-22 15:00 4.21 Days
Continuous
SASK POWER P2C maintenance AB-SK
ATCO 25-Apr-22 12:00 26-Apr-22 17:00 29 Hours
Continuous
951S 920C, 951s 920C (951s Thickwood) Wire DFR into existing CT circuit and wire breaker status to DFR  
EPCOR 26-Apr-22 07:00 26-Apr-22 17:00 10 Hours
Continuous
RW2401 @ Riverview, RW2401 (EP Riverview) Riverview RW2401 Tank Heater Repair  
ENMAX 26-Apr-22 07:00 26-Apr-22 17:00 10 Hours
Continuous
162s 240KV Bus. PT-Z42, 162B240-RB142 (ENMAX 162), 162B240-RB143 (ENMAX 162) Maintenance on 2-EMC-DS-0002 by CEC. Grounds required to bre installed by Enmax between SW142, SW143  
ALTALINK 26-Apr-22 07:00 26-Apr-22 17:30 10.5 Hours
Daily
510s2952 GOI, 510s 2952 (510s Sunnybrook) Install, wire, test and commission new SEL-2411  
ALTALINK 26-Apr-22 08:00 28-Apr-22 18:00 2.42 Days
Continuous
170L (799s-632s) OOS, 170L (632s Russell - 799s Coleman) 170L required to be out of service for 799s to 632s fiber relocation (reference 279293). AB-BC
ATCO 26-Apr-22 14:01 26-Apr-22 17:00 2.98 Hours
Continuous
888S 905, 888s 905 (888s Dover) RAS and DFR addition to 9L74  
EPCOR 27-Apr-22 07:00 27-Apr-22 17:00 10 Hours
Continuous
RW2402 @ Riverview, RW2402 (EP Riverview) Riverview RW2402 Tank Heater Repair  
ALTALINK 27-Apr-22 07:00 28-Apr-22 10:00 27 Hours
Continuous
268s24 (503L) - Advice, 503L (268s Whitecourt - 323s Whitecourt Power) Customer outage for their maintenance. Iconic to ground 503L under Customer isolation to facilitate the Customer's work. Transition to 279736 268s 69kV Bus & 503L - GOI.  
ATCO 27-Apr-22 08:00 27-Apr-22 17:00 9 Hours
Continuous
7L24, 7L24 (846s Grand Centre - 7LA24 tap) GOI required on 7L24 to relocate structures 188, and 189, for road widening project(AB transportation).  
ATCO 27-Apr-22 08:00 27-Apr-22 17:00 9 Hours
Continuous
951S 904, 951S 905, 888S 910, 888S 911, 9L30, 9L30 (888s Dover - 951s Thickwood), 888s 904 (888s Dover), 888s 905 (888s Dover), 888s 910 (888s Dover), 888s 911 (888s Dover) Wire DFR into existing CT circuit and wire breaker status to DFR  
ALTALINK 27-Apr-22 08:00 28-Apr-22 17:00 1.38 Days
Continuous
33s 3 (33s Spray) maintenance  
ALTALINK 27-Apr-22 08:00 28-Apr-22 17:00 1.38 Days
Continuous
33s 6 (33s Spray) maintenance  
ATCO 27-Apr-22 09:00 29-Apr-22 17:00 2.33 Days
Continuous
825S 908C, 825s 908C (825s Whitefish Lake) 908C OOS to check and test individual cans for failure, This is related to alarms received on February 25, 2022.  
ALTALINK 27-Apr-22 17:00 27-Apr-22 17:30 30 Mins
Daily
688L(653s-199s-284s) Breaker Open, 688L (199s East Airdrie - 688AL tap) momentary De energizing 688L to use breaker at 199s688 to energize new TX at 284s  
ALTALINK 28-Apr-22 08:00 28-Apr-22 15:00 7 Hours
Daily
612L (336s - 368s) GOI, 612L (336s Fincastle - 368s Burdett) 336S Fincastle to 368s Burdette. high load move on Highway 3 between structure 155-156.  
ALTALINK, BHE 28-Apr-22 08:00 28-Apr-22 15:00 7 Hours
Daily
719s 138sCB1 Isolation, 879AL (719s Rattlesnake Ridge - 879L) Test tripping of 719s (Rattlesnake) breaker 138CB1 for implementation of new AML RAS scheme  
ATCO 28-Apr-22 08:00 28-Apr-22 17:00 9 Hours
Continuous
9L112, 9L112 (888s Dover - 951s Thickwood) Wire DFR into existing CT circuit and wire breaker status to DFR  
ALTALINK 28-Apr-22 09:00 28-Apr-22 17:00 8 Hours
Daily
268s 69kV Bus & 503L - GOI, 503L (268s Whitecourt - 323s Whitecourt Power), 268s 69kV Bus (268s Whitecourt), 526L (268s Whitecourt - 520L tap) Maintenance on 268s269, 268s68, & 268s24. Iconic to ground 503L to facilitate the Customer's work. Transition from 279842 503L (323s Station) - GOI  
ATCO 29-Apr-22 08:00 29-Apr-22 17:00 9 Hours
Continuous
9L07, 9L07 (888s Dover - 2011s Dawes) Wire DFR into existing CT circuit and wire breaker status to DFR  
ATCO 29-Apr-22 08:00 30-Apr-22 17:00 1.38 Days
Continuous
801S 901T, 801s 901T (801s Anderson) WHEATLAND PROJECT
801S Anderson Sub Protection Upgrade
 
ATCO 29-Apr-22 10:00 29-Apr-22 16:00 6 Hours
Continuous
846S 701, 7L28, 7L28 (717s Ethel Lake - 846s Grand Centre) GOI for 7L28 to run a span of wire to connect 7L28 to the 144KV bus by 700D1. This will be used the week of May 16th to tap up the mobile sub for 701TS and 702TCS O&M work.  
EPCOR 02-May-22 07:00 02-May-22 17:00 10 Hours
Continuous
TX3 @ Jasper Terminal E805S, 805s T3 (805s Jasper) Jasper TX3 Temporary Arc Flash Protection Removal  
EPCOR 02-May-22 07:00 06-May-22 17:00 4.42 Days
Continuous
TX1 zone @ Rossdale, 814s T1 (814s Bellamy), T1 (Rossdale), BR722 (Rossdale), R721 (Rossdale) Rossdale TX1 Zone Op-Checks, P&C Maintenance  
EPCOR 02-May-22 07:00 06-May-22 17:00 4.42 Days
Continuous
1206 Bay @ Genesee 330P, 330p 1206 (330p Genesee) Genesee 1206 Bay CT Doble, Breaker Maintenance  
EPCOR 02-May-22 07:00 06-May-22 17:00 4.42 Days
Continuous
C2406 Bay @ Cloverbar E987S, 987s C2406 (987s Clover Bar) Cloverbar C2406 CT/Breaker Doble and Breaker Maintenance  
ENMAX 02-May-22 08:00 02-May-22 12:00 4 Hours
Continuous
162B240-RB135, 162B240-RB135 (ENMAX 162) trip testing  
ATCO 02-May-22 08:00 05-May-22 16:00 3.33 Days
Continuous
7L68, 7L68 (730s Rycroft - 811s Clairmont Lake) Walk Up/ Climbing Inspection  
ALTALINK 02-May-22 08:00 10-May-22 17:00 8.38 Days
Continuous
925L (63s - 74s) - GOI, 925L (63s Red Deer - 74s Janet) A & B Protection upgrade @ 63s & 74s  
BCH 02-May-22 09:00 06-May-22 17:00 4.33 Days
Continuous
1L274 (EFT - 1D2L274) replace defective compression sleeves AB-BC
Saskpower 02-May-22 10:00 03-May-22 15:00 29 Hours
Continuous
Sask Power P2P maintenance AB-SK
ATCO 02-May-22 11:00 03-May-22 17:00 30 Hours
Continuous
876S 901TD, 876S 901T, 876S 501VR, 876s 901T (876s Brintnell), 876S 901A (876s Brintnell) 901T Transformer and 501VR regulator maintenance, 901TD repairs - 240kV GOI point to 901TD after repairs on 901TD are complete. See GOI 2-63705
25Kv Load will be transferred to 876S 902T
 
ENMAX 02-May-22 12:00 02-May-22 16:00 4 Hours
Continuous
162B240-RB134, 162B240-RB134 (ENMAX 162) trip testing  
SUNCOR 03-May-22 06:00 12-May-22 18:00 9.5 Days
Continuous
29EDD94;29-952-9702 29EDD94;29-952-9703 29PT-406 to be done consecutively one after the other
29EDD94;29-952-9702 MAIN & TEST;PM 10y
29EDD94;29-952-9703 MAIN & TEST;PM 10y
29EDD94;29PT-406 SYSTEM;PM 5y,10y
29EDD94;29PP-84 SYSTEM;PM 5y,10y
 
ALTALINK 03-May-22 08:00 03-May-22 17:00 9 Hours
Continuous
658L (562s-649s) - GOI, 658L (562s Cypress - 649s Chappice Lake) Line outage to integrate anti-island scheme and install breaker maintenance switches for 562s1352 and 562s1452  
ALTALINK 03-May-22 08:30 05-May-22 11:30 2.13 Days
Continuous
167s T2 TX18909 - GOI, 167s T2 (167s Ipiatik Lake) T2 Maintenance and Testing  
ALTALINK 03-May-22 09:00 03-May-22 14:00 5 Hours
Daily
202L (61s - 62s) - GOI, 202L (61s Lodgepole - 62s Brazeau) 202L GOI required for completion of high-load move between structures 143-144. (Carrier PO-DV2203-2)  
BCH 03-May-22 09:00 06-May-22 17:00 3.33 Days
Continuous
2L294 (A.A. Lambert - Cranbrook) replace structures & timbers AB-BC
ALTALINK 03-May-22 09:30 05-May-22 17:30 2.33 Days
Continuous
138s1752 (R2) GOI, 138s 1752 (138s Windy Flats) Maintenance, doble (R1). 138kV Breaker Maintenance (138s1652)  
ATCO 03-May-22 17:00 06-May-22 15:00 2.92 Days
Continuous
876S 901T, 876S 501VR 901T Transformer and 501VR regulator maintenance
901T Out of service 25Kv Load transferred to 876S 902T under GOI 2-63704
 
SUNCOR 04-May-22 06:00 12-May-22 18:00 8.5 Days
Continuous
29PL9-12 29EDD34;29PL9-12 SYSTEM;PM 5y,10y
& PRC-023 settings update
 
ALTALINK 04-May-22 07:00 04-May-22 20:00 13 Hours
Daily
250p 138kV BUS 1 GOI, 718L (250p Bighorn Plant - 263s Strachan), 250P T40 (250P Bighorn Plant), 250p T1 (250p Bighorn Plant), 250p T2 (250p Bighorn Plant) PRC5 maintenance on P2. Relay maintenance on the following: S252 (s32) A51/79/252 SEL351S  
ALTALINK 04-May-22 07:00 05-May-22 04:30 21.5 Hours
Continuous
263s 138kV bus 1, T1, 718L, 870L GOI, 870L (262s Rocky Mountain House - 263s Strachan), 718L (250p Bighorn Plant - 263s Strachan), 263s C1 (263s Strachan), 263s 138kV Bus 1 (263s Strachan) 1st scope) P5 Urgent repair conductor 718L170 2nd scope) Replace 263s1(motor operated switch), replace strain insulators on 718L and 870L  
ALTALINK 04-May-22 07:00 05-May-22 07:00 24 Hours
Continuous
250p 22 (250p Bighorn Plant) BH2 Spring leakdown.  
ALTALINK 04-May-22 07:00 24-Jun-22 15:00 51.33 Days
Continuous
250p 11 (250p Bighorn Plant) maintenance  
ENMAX 04-May-22 08:00 04-May-22 16:00 8 Hours
Continuous
65B240-D130, 65B240-D130 (ENMAX 65) HV Breaker maintenance 65B240-D130  
SUNCOR 04-May-22 08:00 12-May-22 18:00 8.42 Days
Continuous
29PL9-12 (2), 29PL9-12 (29EDD-34 - 29EDD-65) 29EDD65 ;29PT-259 SYSTEM;PM 5y line 29PL9-12  
ALTALINK 05-May-22 07:30 05-May-22 12:30 5 Hours
Daily
914L (86s - 87s) GOI, 914L (86s Bigstone - 87s Gaetz) fire risk mitigation; Str 337  
CNRL 05-May-22 07:30 09-May-22 18:00 4.44 Days
Continuous
838s 75-TR-1801 (838s Horizon Mining) 5 year PM (breakers, PRC-005)  
ENMAX 05-May-22 08:00 05-May-22 16:00 8 Hours
Continuous
65B240-D131, 65B240-D131 (ENMAX 65) HV Breaker maintenance 65B240-D131  
ALTALINK 05-May-22 12:31 05-May-22 17:30 4.98 Hours
Daily
914L (63s - 87s) GOI, 914L (63s Red Deer - 87s Gaetz) fire risk mitigation; Str 400/448  
ALTALINK 07-May-22 07:00 07-May-22 18:00 11 Hours
Daily
955L (59s - 103s) - GOI, 955L (59s Peigan - 103s Goose Lake) Maintenance on 955L91  
ALTALINK 08-May-22 07:00 08-May-22 18:00 11 Hours
Daily
956L (59s - 103s) - GOI, 956L (59s Peigan - 103s Goose Lake) Maintenance on 956L80  
ALTALINK 08-May-22 07:00 12-May-22 18:00 4.46 Days
Continuous
39s T2, 240kV B2, NEW1168L, 973L, 974L - GOI, 39s 240kV Bus 2 (39s Bickerdike), 39s T2 (39s Bickerdike), 974L (39s Bickerdike - 310p Sundance) RET Install NEW 973L, 974L and 1168L into A-frames at 39S as part of Cascade Project. New spans to 973L, 974L and 1168L A-frames to cross over 39s 240 kV bus 2. New Spans are not connected to the 39s yet. Close Open Points 'K',’L’,’M’,’N’. Note new 240kV Breakers not installed at this time.  
EPCOR 09-May-22 07:00 13-May-22 17:00 4.42 Days
Continuous
TX1 @ Jasper Terminal E805S, 805s T1 (805s Jasper) Surge Arrestor Replacement  
EPCOR 09-May-22 07:00 13-May-22 17:00 4.42 Days
Continuous
TX4 @ Jasper Terminal E805S, 805s T4 (805s Jasper) Jasper TX4: Protection Upgrade Cutovers  
EPCOR 09-May-22 07:00 20-May-22 17:00 11.42 Days
Continuous
330p 1207 (330p Genesee) Genesee 1207/1208 Bay CT Doble, Breaker Maintenance, 1207 bay CVT doble, TX arrestor doble, 1207B/1208A/12GT3D maintenance  
ALTALINK 09-May-22 07:15 09-May-22 17:45 10.5 Hours
Daily
100L (498s - 895s) GOI, 100L (498s Tilley - 895s Suffield) Maintenance (Str 177)  
ALTALINK 09-May-22 07:30 13-May-22 16:30 4.38 Days
Continuous
511s ACF Bank # 1 GOI, AML 511s FB Bus 1 (AML 511s Crossings), AML 511s SVC Plus (AML 511s Crossings) ABB Breaker and AC Filter Maintenance, 511s81 and 511s82 Disconnect Maintenance and Negative Fusing install project. Bird Mitigation on AC Filters.  
ENMAX 09-May-22 08:00 09-May-22 16:00 8 Hours
Continuous
65B240-D132, 65B240-D132 (ENMAX 65) HV Breaker maintenance 65B240-D132  
ATCO 09-May-22 08:00 12-May-22 16:00 3.33 Days
Continuous
7L68, 7L68 (730s Rycroft - 811s Clairmont Lake) Walk Up/ Climbing inspection  
ATCO 09-May-22 08:00 13-May-22 16:00 4.33 Days
Continuous
2029S 1218, 2029s 1218A (2029s Heathfield) Breaker has failed POW sensor. Replace Sensor and test breaker POW functionality  
ATCO 09-May-22 08:00 16-May-22 12:00 7.17 Days
Continuous
951S 907, 951S 908, 9L01, 9L01 (848s Ruth Lake - 951s Thickwood) **This Permit is one of 3 permits replacing 2-49081 due to AESO request**
May 9 -16, Outage on Breakers 907, 908 and Line 9L01. Construction on NEW breaker 909 and installation of gang switches. Relay settings change and testing on 908 (9L01) and operation of gang switch 9L01D2. Isolation points: 848S 9L01D1, 951S 907A, 951S 909A
907 OOS, 908 OOS and 9L01 OOS
During this time the NEW bus work will also be in construction.
 
BCH 09-May-22 09:00 13-May-22 17:00 4.33 Days
Continuous
1L274 (EFT - 1D2L274) replace timber & install markerballs AB-BC
ATCO 09-May-22 09:00 16-May-22 12:00 7.13 Days
Continuous
7L82, 7L82 (788s Hotchkiss - 855s Hamburg) Walk Up/ Climbing inspection  
ALTALINK 10-May-22 07:00 11-May-22 18:00 1.46 Days
Continuous
983L (244s - 251s) - GOI, 983L (244s Bowmanton - 251s Whitla) Re-wire 251s552 and 251s652 trip circuits, add breaker status to L4 protections for RAS functions, re-wire 244s552 and 244s652 trip circuits, add breaker status for RAS at 244s and tie in CT’s for SEL 451’s at 244s  
ALTALINK 10-May-22 07:00 12-May-22 18:00 2.46 Days
Daily
794L (157s - A819s) - GOI Urgent, 794L (157s Lac La Biche - 819s Whitby Lake) Urgent outage to replace burning arms/Insulation on 794L (Structures 35, 75, 92)  
ALTALINK 10-May-22 07:30 10-May-22 16:30 9 Hours
Daily
38s7152 - GOI, 38s 7152 (38s East Edmonton) Replace 1 grading capacitor on 38s7152  
CNRL 10-May-22 07:30 14-May-22 18:00 4.44 Days
Continuous
838s 75-TR-2801 (838s Horizon Mining), 838s 75-TR-1701 (838s Horizon Mining) 5 year PM (breakers, PRC-005)  
ENMAX 10-May-22 08:00 10-May-22 16:00 8 Hours
Continuous
65B240-D133, 65B240-D133 (ENMAX 65) HV Breaker maintenance 65B240-D133  
ATCO 11-May-22 07:00 11-May-22 17:00 10 Hours
Continuous
7L68, 7L68 (730s Rycroft - 811s Clairmont Lake) SVC addition and 144 kv bus rebuild.
Install new bypass switch 7L68D3
 
ALTALINK 11-May-22 07:00 11-May-22 18:00 11 Hours
Daily
763L (28s - 763L257A) - GOI, 763L (28s West Brooks - 763AL tap) Clearance concerns UB violation 763L (Str's 78-79)  
ALTALINK 11-May-22 07:30 11-May-22 16:30 9 Hours
Daily
89s352 - GOI, 89s 352 (89s Ellerslie) Replace 1 grading capacitor on 89s352  
ALTALINK 11-May-22 08:00 11-May-22 12:00 4 Hours
Daily
33s 3 (33s Spray) maintenance  
ENMAX 11-May-22 08:00 11-May-22 16:00 8 Hours
Continuous
65B240-D134, 65B240-D134 (ENMAX 65) HV Breaker maintenance 65B240-D134  
BCH 11-May-22 09:00 12-May-22 17:00 1.33 Days
Continuous
5L98 (BCH Nicola - Vaseux Lake) flashed insulator replacements AB-BC
ALTALINK 11-May-22 13:00 11-May-22 17:00 4 Hours
Daily
33s 6 (33s Spray) maintenance  
ALTALINK 11-May-22 23:00 12-May-22 03:00 4 Hours
Continuous
62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 12-May-22 03:00 12-May-22 07:00 4 Hours
Daily
62s 12 (62s Brazeau Plant) maintenance  
ENMAX 12-May-22 08:00 12-May-22 16:00 8 Hours
Continuous
65B240-D135, 65B240-D135 (ENMAX 65) HV Breaker maintenance 65B240-D135  
ATCO 12-May-22 08:30 12-May-22 18:00 9.5 Hours
Continuous
826S 902T, 826s 902T (826s Marguerite Lake) Check for moisture in 826S 902T 63T-MT junction boxes after spring melt. This will require a transformer outage. This is an action item for a PRC004 report due to a forced outage on Nov. 8th and 29th 2021 where the transformer locked out.  
ALTALINK 12-May-22 18:00 14-May-22 17:00 1.96 Days
Continuous
973L NEW (39s-Open Point 'P') - GOI Continued Construction  
ALTALINK 12-May-22 18:00 13-Jun-22 06:00 31.5 Days
Continuous
39s NEW 240kV Gear - GOI Continued 240k breakers installation, Continued 1168L/974L/973L Construction.  
ALTALINK 12-May-22 18:00 29-Jun-22 17:00 47.96 Days
Continuous
974L NEW (39s-Open Point 'Q') - GOI Continued Construction  
ALTALINK 12-May-22 18:00 30-Oct-22 12:00 170.75 Days
Daily
1168L NEW (39s-Open Point 'F') - GOI 1135L Continued Construction  
ALTALINK 14-May-22 08:00 22-May-22 18:30 8.44 Days
Continuous
39s 138kV, B2, T2, 240B2, 973L, 1135L - GOI Complete connection of 1135L to existing 973L bay – Close Open Point ‘P’, Close Open Point ‘G’ Complete breaker fail & T2 trip testing to 39s452, 39s852, 39s1152. Close N.O VT13 39s57. Add supervisory control to new 39s1152, put 39s1152 breaker into service. add Dev 43M maintenance switches to 39s1052, 39s1152, 39s26, & 39s29. Close Open Point New 973L ‘B’  
ALTALINK 14-May-22 09:00 15-May-22 17:30 1.35 Days
Continuous
349s T1 (Tx 18737) - GOI, 349s T1 (349s Stavely) T1 Maintenance & doble, Valve leak repair, Qualitrol sensor issue repair.  
BCH 15-May-22 08:00 15-May-22 20:00 12 Hours
Continuous
1L274 (48s Pocaterra - Britt Creek), 1L274 (Britt Creek - 1D4L274) BCK OSP Rev00 Step 2 AB-BC
ATCO 15-May-22 12:01 12-Jun-22 12:00 28 Days
Continuous
9L02, 9L02 (809s Louise Creek - 813s Little Smoky), 813s 906 (813s Little Smoky), 813s 908 (813s Little Smoky) 813S Little Smoky Rebuild
Remove panels 5H,6H - install new panel 9P3 - BKR 905 and 906 P&C wiring, prep work
Relay programming and functionality
Commission control, alarms and status
 
EPCOR, ALTALINK 16-May-22 07:00 03-Jun-22 17:00 18.42 Days
Continuous
240BA2 @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy), 1056L (89s Ellerslie - 629s Argyll Transfer Station) BA2 Oil Degassing  
BCH 16-May-22 08:00 20-May-22 17:00 4.38 Days
Continuous
2L113 (B1s Natal - B2s Cranbrook) CBK 2D2CB5 & 2D1CB6 disconnect repairs AB-BC
ATCO 16-May-22 08:00 23-May-22 16:00 7.33 Days
Continuous
7L228, 7L228 (845s Big Mountain - 2091s Thornton) Walk Up/ Climbing inspection  
ATCO 16-May-22 09:00 23-May-22 17:30 7.35 Days
Continuous
790S 704, 790S 703T Replace 1 phase on 790S 704, 790S 703T maintenance  
ALTALINK 16-May-22 11:00 19-May-22 17:30 3.27 Days
Continuous
60s50(50L) GOI, 50L (44s Bearspaw Plant - ENMAX 21) 138kV CTs (60s50) replacement  
ALTALINK 16-May-22 12:00 19-May-22 17:30 3.23 Days
Continuous
17s T2 (Tx18477) and 17s85 GOI, 17s T2 (17s Benalto) fix leaks, maintain, test transformer.  
ATCO 16-May-22 12:00 24-May-22 12:00 8 Days
Continuous
951S 908, 951s 908 (951s Thickwood Hills) Addition of NEW bus on 900BS2, Construction, Commissioning

During this time the NEW bus work will also be in construction.

May 16 - 24 isolation points 951S 908B, 951S 909A
 
ENMAX 17-May-22 08:00 19-May-22 16:00 2.33 Days
Continuous
65.2TR., 65.2TR (ENMAX 65) Substation - Oil Sampling - 240-65.2-TC, MT. Check Reversing Switch. 65.2TR, TC Replace PRD Junction Box. 65PT138-Z32 swap  
ATCO 17-May-22 10:00 20-May-22 17:30 3.31 Days
Continuous
755S 904, 755s 904 (755s Cordel) BREAKER SF6 GL315 COMPLETE TESTING 904  
ALTALINK 17-May-22 11:00 17-May-22 14:00 3 Hours
Daily
151s765W GOI, 765L (151s Strathmore - 419s Chestermere) Replace a CT terminal on the ‘A’ RAS 179 relay. Complete loop tests. RAS 179 ' A'Relay to be OOS as well, 'B' protection to remain in place to maintain redundancy  
ATCO 18-May-22 10:00 18-May-22 12:00 2 Hours
Continuous
804S 703, 7L153, 7L153 (609s Wheatland - 804s Wintering Hills) 703 PRC005 trip coil testing.  
CNRL 19-May-22 07:30 28-May-22 18:00 9.44 Days
Continuous
842s 75-TR-7701 (842s Horizon Upgrading), 842s 75-TR-4701 (842s Horizon Upgrading), 75-PLH-903 (838s Horizon Mining - 842s Horizon Upgrading) 5 year PM (breakers, PRC-005)  
ALTALINK, Lethbridge 19-May-22 08:00 19-May-22 15:00 7 Hours
Continuous
667L (146s Lethbridge MacDonald - 370s North Lethbridge) 667L Open End Outage At 146s, Test Trip and Install Conductor  
ATCO 19-May-22 09:00 24-May-22 09:00 5 Days
Continuous
846S 701, 7L28, Mobile Substation #4, 7L28 (717s Ethel Lake - 846s Grand Centre) GOI for 7L28 to tap up 2000s on the line side of 700D1
Energize 2000S and soak
 
ATCO, ALTALINK 20-May-22 12:01 24-May-22 17:00 4.21 Days
Continuous
7L77, 7L77 (395s North Holden - 709s Vegreville) Cut over for phase one rebuild on 7L65 south of 709S Vegreville sub.  
ALTALINK 22-May-22 18:00 29-Jun-22 06:00 37.5 Days
Continuous
1135L NEW (39s-1047s) - GOI 1135L Continued Construction  
ATCO 23-May-22 09:00 30-May-22 12:00 7.13 Days
Continuous
7L82, 7L82 (788s Hotchkiss - 855s Hamburg) WAlk Up/ climbing inspection  
BCH 23-May-22 09:00 03-Jun-22 17:00 11.33 Days
Continuous
5L96 (Selkirk - Vaseux Lake) replace defective insulators and install markerballs AB-BC
EPCOR 24-May-22 07:00 28-May-22 17:00 4.42 Days
Continuous
1203 Bay @ Genesee 330P, 330p 1203 (330p Genesee) Genesee 1203 Bay Breaker Maintenance and CT Doble  
ENMAX 24-May-22 08:00 25-May-22 16:00 1.33 Days
Continuous
65.1TR, 65.1TR (ENMAX 65) 65.1TR Top Up & PRD Flag Replacement  
ALTALINK 24-May-22 08:00 26-May-22 17:00 2.38 Days
Continuous
510s A & B 500kV Buses & 1325L - GOI, 1325L (510s Sunnybrook - AML 511s Crossings) correct bus pipe connections on B bus, C phase - WATL link outage  
ATCO 24-May-22 09:00 31-May-22 16:00 7.29 Days
Continuous
834S 501, 834S 901T, 834s 901T (834s Wesley Creek) Installation of oil containment around 901T. Require the outage to move 25KV cables around.  
BCH 24-May-22 09:00 03-Jun-22 17:00 10.33 Days
Continuous
5L96 (Selkirk - Vaseux Lake) flashed insulator replacement AB-BC
ATCO 24-May-22 09:01 30-May-22 17:30 6.35 Days
Continuous
846S 701TCS, 846S 702TCS, 7L24, Mobile Substation #4, 7L24 (846s Grand Centre - 7LA24 tap) Switching of 2000s into service, GOI 144KV bus at 846s open end 7L24 from Bonnyville. Transformers and circuit switchers out of service.  
ATCO 24-May-22 10:00 26-May-22 17:30 2.31 Days
Continuous
755S 905, 755s 905 (755s Cordel) BREAKER SF6 GL315 COMPLETE TESTING 905  
ATCO 24-May-22 12:00 31-May-22 16:00 7.17 Days
Continuous
951S 900BS2 Release COG 2-63102 AFTER this GOI is issued
**This is 1 of 3 permits to replace 2-49081**
Addition of NEW bus on 900BS2, Construction, Commissioning

During this time the NEW bus work will also be in construction.

May 24-31, 900BS2 outage to tie NEW bus work in (912A and 909B). Isolation points: 951S 903B, 951S 906B, 951S 908B, 951S 910A
903 OOS, 906 OOS, 908 OOS and 900BS2 OOS
 
ATCO 24-May-22 12:00 03-Jun-22 17:30 10.23 Days
Continuous
959s SVC, 959S SVC (959s Lanfine) Valve Hall Inspection, Transformer Testing  
ATCO 24-May-22 13:00 26-May-22 17:00 2.17 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Cross arm and insulator replacement.  
ATCO 25-May-22 08:00 28-May-22 17:00 3.38 Days
Continuous
766S 901T, 766s 901T (766s Nevis) WHEATLAND PROJECT
766S Nevis Sub Protection Upgrade (P1718)
 
ALTALINK 26-May-22 08:00 26-May-22 17:00 9 Hours
Daily
968L(138s - 370s) GOI, 968L (138s Windy Flats - 370s North Lethbridge) urgent repair on structure 21  
BCH 26-May-22 09:00 27-May-22 17:00 1.33 Days
Continuous
2CB10 (BCH Cranbrook) CBK 2CB10 BFPN testing AB-BC
CNRL 29-May-22 07:30 07-Jun-22 18:00 9.44 Days
Continuous
842s 75-TR-8701 (842s Horizon Upgrading), 842s 75-TR-5701 (842s Horizon Upgrading), 75-PLH-901 (838s Horizon Mining - 849s Joslyn), 75-PLH-904 (838s Horizon Mining - 842s Horizon Upgrading) 5 year PM (breakers, PRC-005)  
EPCOR 30-May-22 07:00 30-May-22 17:00 10 Hours
Continuous
TX4 @ Jasper Terminal E805S, 805s T4 (805s Jasper) Jasper TX4 Temporary Arc Flash Protection Removal  
ALTALINK 30-May-22 07:30 01-Jun-22 16:30 2.38 Days
Continuous
510s ACF Bank # 11 GOI, 510s ACF11 (510s Sunnybrook) AC Filter Maintenance.  
ATCO 30-May-22 08:00 30-May-22 12:59 4.98 Hours
Continuous
846S 701, 846S 7L28 Protection Relay, 7L28, Mobile Substation #4, 7L28 (717s Ethel Lake - 846s Grand Centre) GOI for 7L28 to tap down 2000s on the line side of 700D1  
ATCO 30-May-22 08:00 03-Jun-22 14:08 4.26 Days
Continuous
2075S 902T, 2075S 930, 2075S ACF21, 2075S VALVE COOLING SYSTEM SVC 2, 2075s 902T (2075s Newell), 2075s ACF21 (2075s Newell) SVC 2 Will be unavailable for the duration of the outage.
Yearly Inspections:
- Semi Annual Valve Cooling Inspection
- Annual SVC 2 Inspection
- Annual Fire System Testing
- ACF21 equipment inspections
 
ENMAX, ALTALINK 30-May-22 08:00 03-Jun-22 16:00 4.33 Days
Continuous
832L (ENMAX 10 - ENMAX 12) 12B138-832L CT Replacement  
ATCO 30-May-22 08:00 06-Jun-22 16:00 7.33 Days
Continuous
7L228, 7L228 (845s Big Mountain - 2091s Thornton) Walk Up/ Climbing inspection  
BCH 30-May-22 09:00 03-Jun-22 17:00 4.33 Days
Continuous
T1 (BCH Nelway) NLY T1 inspection and doble test AB-BC
ATCO 30-May-22 10:00 01-Jun-22 17:30 2.31 Days
Continuous
755S 906, 755s 906 (755s Cordel) BREAKER SF6 GL315 COMPLETE TESTING 906  
ATCO 30-May-22 10:00 02-Jun-22 16:00 3.25 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement  
ALTALINK 30-May-22 11:00 30-May-22 18:00 7 Hours
Daily
410s 240kV Bus 1 - GOI, 410s 240kV Bus 1 (410s Josephburg) Maintenance on 410s5  
ALTALINK 30-May-22 11:00 04-Jun-22 18:00 5.29 Days
Continuous
410s T1 – GOI, 410s T1 (410s Josephburg) 410sT1 25kV neutral & 138kV bushing replacement. Repair leaks, replace hydran, and replace old style LA standoffs.  
ALTALINK 30-May-22 11:00 08-Jun-22 18:00 9.29 Days
Continuous
158s Portion of 138kV Bus (763L) - GOI, 763L (158s Vauxhall - 763AL tap) - 138kV strain insulators 763LN, 138kV PT Replacement 158s31, 138kV PT addition 763LX and maintenance on 158s763X  
ATCO 30-May-22 11:48 03-Jun-22 11:48 4 Days
Continuous
2029S GRTS 1301 High Speed switch maintenance on 1301

Redundant Return path unavailable.
IF the DMR has a sustained fault the link will stay off instead of operating in HV2 return mode
 
ALTALINK 01-Jun-22 09:30 03-Jun-22 16:30 2.29 Days
Continuous
510s ACF Bank # 12 GOI, 510s ACF12 (510s Sunnybrook) AC Filter Maintenance.  
ATCO 03-Jun-22 04:30 09-Jun-22 22:00 6.73 Days
Continuous
859s 701T (859s Primrose), 859s 701 (859s Primrose), 859s 704 (859s Primrose) maintenance  
EPCOR 06-Jun-22 07:00 11-Jun-22 17:00 5.42 Days
Continuous
J2404 Bay @ Jasper Terminal E805S, EP 805s J2404 (EP 805s Jasper) Jasper J2404 Bay Doble and Breaker Maintenance  
ALTALINK 06-Jun-22 07:30 10-Jun-22 16:30 4.38 Days
Continuous
511s ACF Bank # 2 GOI, AML 511s 240kV ACF 2 Bus (511s Crossings) ABB Breaker and AC Filter Maintenance, 511s77 and 511s78 Disconnect Maintenance and Negative Fusing install project. Bird Mitigation on AC Filters.  
ALTALINK 06-Jun-22 08:00 06-Jun-22 17:00 9 Hours
Daily
974L (310P-39s) - GOI, 974L (39s Bickerdike - 310p Sundance) Line strain insulator replacement @ 310P  
ATCO 06-Jun-22 08:00 10-Jun-22 14:45 4.28 Days
Continuous
2075S ACF12, 2075S ACF13, 2075S ACF14, 2075s ACF12 (2075s Newell), 2075s ACF13 (2075s Newell), 2075s ACF14 (2075s Newell) Yearly Inspections of ACF 1 Filter Banks - ACF 12/13/14, EATL will be limited t0 750MW while ACF 12/13/14 are out of service  
ENMAX, ALTALINK 06-Jun-22 08:00 10-Jun-22 16:00 4.33 Days
Continuous
833L (ENMAX 2 - ENMAX 12) 12B138-833L CT Replacement  
ATCO 06-Jun-22 08:00 10-Jun-22 17:30 4.4 Days
Continuous
2029S 1302B High Speed switch maintenance on 1302

Redundant Return path unavailable.
IF the HV2 PATH has a sustained fault the link will stay off instead of operating in DMR return mode
 
SUNCOR 06-Jun-22 08:00 12-Jun-22 18:00 6.42 Days
Continuous
29PL9-14/29PL9-15, 29PL9-14 (29EDD-34 - 29EDD-56), 29PL9-15 (29EDD-34 - 29EDD-56) Relay settings update will be done sequentially one after the other  
ALTALINK 06-Jun-22 08:30 10-Jun-22 16:30 4.33 Days
Continuous
510s AC Filter Bus 2 GOI, 510s ACF21 (510s Sunnybrook), 510s ACF22 (510s Sunnybrook) AC Filter Maintenance.  
BCH 06-Jun-22 09:00 10-Jun-22 17:00 4.33 Days
Continuous
5L92 (Cranbrook - Selkirk) SEL 5D24 inspection and 5CB4 inspection/doble testing AB-BC
BCH 06-Jun-22 09:00 12-Jun-22 17:00 6.33 Days
Continuous
5L92 (Cranbrook - Selkirk) CDK 5D24 disconnect inspection AB-BC
ATCO 06-Jun-22 09:00 13-Jun-22 12:00 7.13 Days
Continuous
7L82, 7L82 (788s Hotchkiss - 855s Hamburg) walk Up/ Climbing inspection  
ATCO 06-Jun-22 10:21 09-Jun-22 16:00 3.24 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement.  
ATCO 06-Jun-22 12:00 09-Jun-22 16:00 3.17 Days
Continuous
2049S 2049S 901T Protection, 2049S 901T, 2049s 901T (2049s Kettle River) 901T Maintenance  
ALTALINK, EPCOR 06-Jun-22 12:00 09-Jun-22 18:00 3.25 Days
Continuous
71s1252 & 71s1352 (921L) - GOI, 921L (71s Lamoureux - 987s Clover Bar) Replacement of the 921L A protection  
ALTALINK 07-Jun-22 07:00 14-Jun-22 18:30 7.48 Days
Continuous
745L (602s - 745L482) - GOI, 745L (602s Cold Creek - 745AL tap) Breaker outage to replace the 745L line protections, and install a new breaker fail protection for 745L. At the end of this outage, the line PT (VT1) will be fully installed as well.  
ALTALINK, ENEL 07-Jun-22 07:30 08-Jun-22 15:30 1.33 Days
Continuous
205s14 Advice for customer, 205s T2 (205s Castle Rock Ridge) Customer equipment maintenance  
ALTALINK 07-Jun-22 07:30 27-Jun-22 07:30 20 Days
Continuous
275s T2(Tx18458) GOI, 275s T2 (275s Jenner) Demo of old bus work and structure. Install new foundations, structure, reactors, bus work and bird cover on T2 25kV Bus.  
ALTALINK 07-Jun-22 08:00 07-Jun-22 17:00 9 Hours
Daily
310P 240kV 'A' Bus - GOI, 310p 240kV Bus A (310p Sundance) Bus strain insulator replacement @ 310P  
ALTALINK 07-Jun-22 08:30 07-Jun-22 13:30 5 Hours
Daily
320p400 (SSTA & SSTB) - GOI 1st trip and PRC5 maintenance; New C60 breaker fail trip testing on breaker 1552 (320p400)  
ALTALINK 07-Jun-22 09:30 07-Jun-22 15:00 5.5 Hours
Daily
63s252 - GOI, 63s 252 (63s Red Deer) 1st trip & PRC 5 maintenance  
ATCO 07-Jun-22 12:00 09-Jun-22 17:30 2.23 Days
Continuous
959s 901T, 959s 901T (959s Lanfine) TRANSFORMER CLASS1 MAJOR TESTING @ LANFINE 959S 901T  
ALTALINK 08-Jun-22 07:00 08-Jun-22 16:00 9 Hours
Daily
995L (17s-68s-62s) & 68s Station - GOI, 995L (17s Benalto - 995AL tap), 995L (62s Brazeau - 995AL tap) 68s PT1 240kV PT replacement. Replace 68s5. Repair leaks on 68s T3. Maintenance on 995L, 3103L, & 495LW protections. Transition to 68s T2 & 25kV Bus 2 – GOI after this outage is complete  
ALTALINK 08-Jun-22 08:00 08-Jun-22 17:00 9 Hours
Daily
919L (310P-77s) - GOI, 919L (77s Sagitawah - 310p Sundance) Line strain insulator replacement @ 310P  
ALTALINK 08-Jun-22 15:00 09-Jun-22 20:00 29 Hours
Continuous
68s T2 & 25kV Bus 2 - GOI Replace 68s5. Transition from 995L (17s-68s-62s) & 68s Station – GOI.  
ALTALINK 09-Jun-22 06:00 09-Jun-22 17:00 11 Hours
Daily
902L (310p-19s) - GOI, 902L (19s Wabamun - 310p Sundance) Line strain insulator replacement @ 310P  
ALTALINK 09-Jun-22 07:00 10-Jun-22 16:00 1.38 Days
Continuous
205s13 Advice for customer, 205s T1 (205s Castle Rock Ridge) Customer equipment maintenance  
ALTALINK 09-Jun-22 09:30 09-Jun-22 15:00 5.5 Hours
Daily
17s5 - GOI, 17s 5 (17s Benalto) 1st trip and PRC5 maintenance  
ALTALINK 11-Jun-22 08:00 16-Jun-22 18:00 5.42 Days
Continuous
310P T35 – GOI, 310p T35 (310p Sundance) Replacement Bus Differential Protection for ST5/6B Bus. Replace strain insulators feeding T35. Replace 310p1852 grading capacitors. T35 Meter replacement.  
ENMAX 11-Jun-22 12:00 11-Jun-22 18:00 6 Hours
Continuous
7.82L. 7.2TR. 7B138-7BT3. 7PT138-Z32 Summer Substation Washing  
EPCOR 13-Jun-22 07:00 17-Jun-22 17:00 4.42 Days
Continuous
12TC2 Zone @ Genesee 330P, 330P 12TC2 (330p Genesee) Genesee 12TC2 Zone Doble  
EPCOR 13-Jun-22 07:00 17-Jun-22 17:00 4.42 Days
Continuous
TX2 @ Poundmaker, T2 (Poundmaker) Poundmaker TX2 Tap Changer Maintenance (Reinhausen), Bladder Repair  
EPCOR 13-Jun-22 07:00 17-Jun-22 17:00 4.42 Days
Continuous
TX1 @ Petrolia E816S, 816s T1 (816s Petrolia) Petrolia TX1 Surge Arrestor Upgrade, EL Smith Project  
ALTALINK 13-Jun-22 07:00 17-Jun-22 17:00 4.42 Days
Continuous
511s 500kV W Bus, 102s 240kV W Bus GOI, AML 511s 240kV West Bus (511s Crossings), 102s 240kV West Bus (102s Langdon) 511s73 and 511s80 Disconnect Maintenance and Negative Fusing install project.  
ATCO 13-Jun-22 07:30 17-Jun-22 15:00 4.31 Days
Continuous
2029S ACF11, 2029S ACF12, 2029S ACF14, 2029S ACF13, 2029s ACF11 (2029s Heathfield), 2029s ACF12 (2029s Heathfield), 2029s ACF13 (2029s Heathfield), 2029s ACF14 (2029s Heathfield) AC Filter Bank 1 Inspections
No Filter redundancy during work and Reduced Voltage Mode
Depending on system dispatch levels the voltage will be reduced below 500KV DC and PCAP will adjust accordingly. (1050MW to 950MW range)
 
ENMAX 13-Jun-22 08:00 15-Jun-22 12:00 2.17 Days
Continuous
162.1TR, 162.1TR (162s Beddington), 138kV North Bus (ENMAX 162), 240kV North Bus (ENMAX 162) Power factor test 162PT240-Z43. Check Reversing Switch. Oil Sampling Bushing, TC, MT. Gas Monitor Taptrans Maintenance. Summer Substation Washing  
ATCO 13-Jun-22 08:00 17-Jun-22 16:00 4.33 Days
Continuous
2075S 900SST2 GOI will be as follows:

June 13- June 17, 2022 904A, 905B and 502VRA for 900SST2 Outage for 904 trip coil

PRC Relay Testing on 20D10 Diameter
- Station Service Transformer Protection
- 904, 905, Breaker Fail Protection will all be tested as a result of PRC-005 Testing
 
ALTALINK 13-Jun-22 08:30 15-Jun-22 16:30 2.33 Days
Continuous
510s ACF Bank # 14 GOI, 510s ACF14 (510s Sunnybrook) AC Filter Maintenance.  
ALTALINK 13-Jun-22 09:00 16-Jun-22 17:00 3.33 Days
Continuous
821L (158s - 421s) - GOI, 821L (158s Vauxhall - 421s Hays) Replace 138kV strain insulators. Maintenance on 158s821E & 158s30  
ALTALINK 13-Jun-22 09:30 13-Jun-22 18:00 8.5 Hours
Daily
1046L (310p-338s) - GOI, 1046L (310p Sundance - 338s Cherhill) Line strain insulator replacement @ 310P  
ATCO 13-Jun-22 10:00 16-Jun-22 16:00 3.25 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement.  
ATCO 13-Jun-22 10:00 20-Jun-22 16:00 7.25 Days
Continuous
7L20, 7L20 (740s H.R.Milner - 810s Dome Cutbank) climbing inspection  
ATCO, ALTALINK 13-Jun-22 12:00 24-Jun-22 17:30 11.23 Days
Continuous
840S CONVERTER, 830L (562s Cypress - 840s McNeill Station), 840s 701 (840s McNeill Station), 840s 701T (840s MCNEILLSTATION) Valve Hall Inspection, Transformer Testing, Breaker Maintenance AB-SK
ALTALINK 13-Jun-22 12:30 24-Jun-22 17:30 11.21 Days
Continuous
650s752 GOI 650s752 240kV Bkr Replacement.  
ALTALINK 13-Jun-22 14:00 13-Jun-22 17:00 3 Hours
Daily
602s847 (847L) - Advice, 847L (602s Cold Creek - 847AL tap) Isolated breaker, complete wiring of trips from new 602s745N breaker fail protection and complete functional trip test  
ALTALINK 14-Jun-22 08:00 14-Jun-22 17:00 9 Hours
Daily
922L (310p-17s) - GOI, 922L (17s Benalto - 310p Sundance) Line strain insulator replacement @ 310P  
ALTALINK, TRANSALTA 14-Jun-22 09:00 15-Jun-22 17:00 1.33 Days
Continuous
59s452 GOI, 59s 452 (59s Peigan) 240kV breaker maintenance  
EPCOR 15-Jun-22 07:00 17-Jun-22 17:00 2.42 Days
Continuous
987s CGDS3 (987s Clover Bar) Pole Remediation  
ATCO 15-Jun-22 07:00 28-Jul-22 17:00 43.42 Days
Continuous
972S 900BS2, 9L16, 9L16 (755s Cordel - 972s Tinchebray), 972s 240kV Bus 900BS2 (972s Tinchebray) Outage on 907B and 908A for the installation and commissioning of 907 and 907CT  
ALTALINK 15-Jun-22 08:00 15-Jun-22 17:00 9 Hours
Daily
973L (310P-39s) - GOI, 973L (39s Bickerdike - 310p Sundance) Line strain insulator replacement @ 310P  
ALTALINK 15-Jun-22 08:00 15-Jun-22 18:00 10 Hours
Daily
863L (618s-225s-226s) OOS Outage needed on 863L due to MPLS upgrades at 226s, 618s, and 225s.  
BCH 15-Jun-22 09:00 15-Jun-22 17:00 8 Hours
Continuous
1L274 (B1s BCH Natal - 1D1L274), 1L275 (799s Coleman - Natal), Natal T1 (BCH Natal), Natal T2 (BCH Natal) NTL 1VT1 inspection/doble and T1 non-electircal PM AB-BC
ENMAX 15-Jun-22 12:00 17-Jun-22 18:00 2.25 Days
Continuous
162.2TR, 162.2TR (162s Beddington), 138kV South Bus (ENMAX 162), 240kV South Bus (ENMAX 162) Power factor test 162PT240-Z44. Check Reversing Switch. Oil Sampling TC, Bushing, MT. Gas Monitor Taptrans Maintenance. Summer Substation Washing  
ALTALINK 16-Jun-22 08:00 16-Jun-22 16:30 8.5 Hours
Daily
102s SVC GOI, 102s SVC (102s Langdon) weed spraying, SVC cooling pipe leak investigation/repair  
ALTALINK 16-Jun-22 08:00 16-Jun-22 17:00 9 Hours
Daily
926L (310P-17s) - GOI, 926L (17s Benalto - 310p Sundance) Line strain insulator replacement @ 310P  
ALTALINK 16-Jun-22 08:30 17-Jun-22 16:30 1.33 Days
Continuous
510s ACF Bank # 13 GOI AC Filter Maintenance.  
BCH 16-Jun-22 09:00 16-Jun-22 17:00 8 Hours
Continuous
1L275 (799s Coleman - Natal) NTL 1VT22 inspection/doble AB-BC
ATCO 17-Jun-22 16:00 24-Jun-22 15:00 6.96 Days
Continuous
2075S 900SST2, 2075S 900BS1 GOI will be as follows:

June 13- June 17, 2022 904A, 905B and 502VRA for 900SST2 Outage for 904 trip coil
June. 20 to June 24, 2022 the isolation will expand to 910A,916A, 919A, 922A, for a full 900BS1 outage to test 904/905 BF protections

PRC Relay Testing on 20D10 Diameter
- Station Service Transformer Protection
- 904, 905, Breaker Fail Protection will all be tested as a result of PRC-005 Testing
 
EPCOR 17-Jun-22 17:01 24-Jun-22 17:00 7 Days
Continuous
TX2 @ Poundmaker, T2 (Poundmaker) Poundmaker TX2 Doble, PMAB2/PMDS1 Disconnect Maintenance  
ENMAX, ALTALINK 18-Jun-22 08:00 18-Jun-22 18:00 10 Hours
Continuous
771L. 162sub 138KV Bus. 47sub., 771L (ENMAX 47 - ENMAX 162) Summer Substation Washing  
ENMAX 18-Jun-22 12:00 18-Jun-22 18:00 6 Hours
Continuous
162.81L. 138KV Bus., 162.81L (391s Balzac - ENMAX 162) Summer Substation Washing  
SUNCOR 20-Jun-22 06:00 26-Jun-22 18:00 6.5 Days
Continuous
30EDD-2 30EDD2;30PK-10 SYSTEM;PM 5y  
EPCOR, ALTALINK 20-Jun-22 07:00 20-Jun-22 17:00 10 Hours
Continuous
1044L @ Jasper Terminal E805S and Petrolia E816S, 1044L (805s Jasper - 816s Petrolia) Jasper 1044L Line Arrestor Doble  
EPCOR 20-Jun-22 07:00 24-Jun-22 17:00 4.42 Days
Continuous
TX2 @ Petrolia E816S, 816s T2 (816s Petrolia) Petrolia TX2 Surge Arrestor Upgrade, EL Smith Project  
ALTALINK 20-Jun-22 07:00 24-Jun-22 18:00 4.46 Days
Continuous
511s 240kV EBus, 102s 240kV EBus GOI, AML 511s 240kV East Bus (511s Crossings), 102s 240kV East Bus (102s Langdon) 511s79 and 511s86 Disconnect Maintenance and Negative Fusing install project.  
ATCO 20-Jun-22 07:00 03-Jul-22 12:00 13.21 Days
Continuous
9L05, 9L05 (809s Louise Creek - 813s Little Smoky), 813s 901 (813s Little Smoky), 813s 904 (813s Little Smoky) 813S Little Smoky Rebuild
Remove panels 5H,6H - install new panel 9P3 - BKR 905 and 906 P&C wiring, prep work
Relay programming and functionality
Commission control, alarms and status
 
ATCO 20-Jun-22 07:30 24-Jun-22 15:00 4.31 Days
Continuous
2029S ACF21, 2029S ACF22, 2029S ACF23, 2029s ACF21 (2029s Heathfield), 2029s ACF22 (2029s Heathfield), 2029s ACF23 (2029s Heathfield) ACF 2 Inspections

ACF 1 will be operational
 
ALTALINK 20-Jun-22 08:00 20-Jun-22 17:00 9 Hours
Daily
310P T34, 310p1152, & 310P1252 - GOI, 310p T34 (310p Sundance) Strain insulator replacements to T34. Replace T34 metering.  
ENMAX, ALTALINK 20-Jun-22 08:00 21-Jun-22 16:00 1.33 Days
Continuous
918L, 918L (281s Johnson - ENMAX 162) Power factor test 162PT240-918  
ATCO 20-Jun-22 09:00 22-Jun-22 17:30 2.35 Days
Continuous
848S 910, 848s 910 (848s Ruth Lake) 910 Breaker Maintenance  
ATCO 20-Jun-22 10:00 23-Jun-22 16:00 3.25 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement.  
ATCO 20-Jun-22 10:00 24-Jun-22 14:00 4.17 Days
Continuous
813S 703T, 813S GLYCOL COOLING SYSTEM SVC, 813S SVC, 813s SVC (813s Little Smoky) SVC Maintenance and Vendor Inspection, 703T SPR relay testing  
ALTALINK 20-Jun-22 10:30 23-Jun-22 17:30 3.29 Days
Continuous
103s T1(TX18776), 138kV Bus1 GOI, 103s T1 (103s Goose Lake) Maintenance, Doble (T1). 138kV switch repairs (103s32, 103s31, 103s20)  
ATCO 20-Jun-22 12:00 23-Jun-22 16:00 3.17 Days
Continuous
2049S 2049S 902T Protection, 2049S 902T, 2049s 902T (2049s Kettle River) 902T Maintenance  
ALTALINK, EPCOR 21-Jun-22 07:00 22-Jun-22 18:00 1.46 Days
Continuous
920L (71s - E557s) - GOI, 920L (71s Lamoureux - 557s Castle Downs) Component Replacement's 920L Str's Range ( 67-100 )  
ALTALINK 21-Jun-22 08:00 23-Jun-22 18:00 2.42 Days
Continuous
185s T2 – GOI Replace T2 Hi side bushings, fix leaks, wash transformer.  
ATCO 22-Jun-22 08:00 22-Jun-22 18:00 10 Hours
Continuous
7L35, 7L35D1 (7L35 Tap), 7L35 (859s Primrose - 7L35 tap) We require a GOI on 7L35 for a pole change for CNLR  
ENMAX, ALTALINK 22-Jun-22 08:00 23-Jun-22 16:00 1.33 Days
Continuous
932L, 932L (74s Janet - ENMAX 162) Power factor test 162PT240-932  
ALTALINK 22-Jun-22 08:30 22-Jun-22 16:30 8 Hours
Daily
310p2452 - GOI Grading capacitor replacement on 310p2452  
ALTALINK, EPCOR 23-Jun-22 07:00 24-Jun-22 18:00 1.46 Days
Continuous
71s 240kV West Bus & 921L - GOI, 921L (71s Lamoureux - 987s Clover Bar), 71s T1 (71s Lamoureux), 71s 1252 (71s Lamoureux), 71s 1352 (71s Lamoureux) Component Replacements on dead end glass on 921L, and Component Replacement's 921L Str's 41 & 72.  
ALTALINK 23-Jun-22 08:30 23-Jun-22 16:30 8 Hours
Daily
310p652 - GOI Grading capacitor replacement on 310p652  
ALTALINK 24-Jun-22 08:00 24-Jun-22 17:00 9 Hours
Daily
250p 22 (250p Bighorn Plant) maintenance  
ALTALINK 24-Jun-22 08:30 24-Jun-22 16:30 8 Hours
Daily
310p352 - GOI Grading capacitor replacement on 310p352  
EPCOR, ALTALINK 26-Jun-22 07:00 30-Jun-22 17:00 4.42 Days
Continuous
920LE @ Castledowns E557S and Lamoureux 71S, 920L (71s Lamoureux - 557s Castle Downs) Aerial: Steel Structure Refurbishment  
EPCOR 27-Jun-22 07:00 29-Jun-22 17:00 2.42 Days
Continuous
C2408 Bay @ Cloverbar E987S, 987s C2408 (987s Clover Bar), 987s T2 (987s Clover Bar) Cloverbar C2408 Bay CVT Doble and Breaker Maintenance  
EPCOR 27-Jun-22 07:00 30-Jun-22 17:00 3.42 Days
Continuous
500kV BUS1 @ Genesee 330P, 330p 500kV Bus 1 (330p Genesee) Genesee 1201A/1204A/1207A/12TC1D/12TC1GS Disconnect Maintenance  
EPCOR 27-Jun-22 07:00 30-Jun-22 17:00 3.42 Days
Continuous
TX3 @ Poundmaker, T3 (Poundmaker) Poundmaker TX3 Tap Changer Maintenance (Reinhausen)  
ALTALINK 27-Jun-22 07:30 28-Jun-22 10:30 27 Hours
Continuous
275s 240kV BUS 2 & T2(Tx18458) GOI, 275s 240kV Bus 2 (275s Jenner), 275s T2 (275s Jenner) Close Open Point "B", install bus pipe. Complete reactors install.  
ATCO 27-Jun-22 09:00 29-Jun-22 17:30 2.35 Days
Continuous
848S 911, 848s 911 (848s Ruth Lake) 606 Breaker Maintenance  
BCH 27-Jun-22 09:00 30-Jun-22 17:00 3.33 Days
Continuous
5L52 (Custer - Ingledow) insulator replacement AB-BC
ATCO 27-Jun-22 09:00 04-Jul-22 16:00 7.29 Days
Continuous
7L20, 7L20 (740s H.R.Milner - 810s Dome Cutbank) Climbing Inspection  
ATCO 27-Jun-22 10:00 30-Jun-22 16:00 3.25 Days
Continuous
7L224, 7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement.  
ATCO 29-Jun-22 07:00 01-Jul-22 17:00 2.42 Days
Continuous
766S 701, 766S 901T, 766s 901T (766s Nevis), 766s 701 (766s Nevis) RAS modifications for the Pattern Lanfine WAGF project (P1898)  
ALTALINK 29-Jun-22 07:00 12-Jul-22 18:00 13.46 Days
Continuous
39s T1 138kVB1, 240B1, 974L, 1084L, 1135L - Complete relocation of 974L to new bay at 39s, Close 39s Open Point "J", 974L Open Point "Q" @ 39s, 974L Open Point "D", and 1048L Open point "N", Rename 39s973E to 39s1135. 974L strain insulator replacements @ 310P.  
BCH 29-Jun-22 09:00 29-Jun-22 17:00 8 Hours
Continuous
2L113 (B1s Natal - B2s Cranbrook) NTL 60B2, 60VT2 Inspection/Doble Testing AB-BC
ALTALINK 29-Jun-22 23:00 30-Jun-22 03:00 4 Hours
Continuous
62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 30-Jun-22 03:00 30-Jun-22 07:00 4 Hours
Daily
62s 12 (62s Brazeau Plant) maintenance  
EPCOR 30-Jun-22 17:01 08-Jul-22 17:00 8 Days
Continuous
TX3 @ Poundmaker, T3 (Poundmaker) Poundmaker TX3 Doble, PMAB3/PMDS8 Disconnect Maintenance  
BCH 01-Jul-22 08:00 01-Jul-22 20:00 12 Hours
Continuous
1L274 (48s Pocaterra - Britt Creek), 1L274 (Britt Creek - 1D4L274) BCK OSP Rev00 Step 4 AB-BC
EPCOR 04-Jul-22 07:00 08-Jul-22 17:00 4.42 Days
Continuous
TX1 @ East Industrial E52S, 52s T1 (52s East Industrial) East Industrial TX1 Zone Op-Checks, P&C Maintenance  
ALTALINK 04-Jul-22 09:00 08-Jul-22 15:00 4.25 Days
Continuous
310P T30 & 69kV Bus - GOI 69kV bus insulator replacements, 310s120 PT replacements, 69kV switch maintenance, 310p3352 breaker replacement, repair 310p692 & 310p691  
ALTALINK 04-Jul-22 09:00 08-Jul-22 18:00 4.38 Days
Continuous
514L (396s - I_322s - 514L198) - GOI, 514BL (322s Cowley Ridge Wind Plant - 514L tap), 514L (396s Pincher Creek - 514BL tap) CRU and Fire Mitigation on Structures #1 - 189  
EPCOR, ALTALINK 04-Jul-22 09:30 09-Jul-22 17:00 5.31 Days
Continuous
920LW @ Castledowns E557S and North Calder 37S, 920L (37s North Calder - 557s Castle Downs) Aerial: Steel Structure Refurbishment  
EPCOR, ALTALINK 04-Jul-22 09:30 09-Jul-22 17:00 5.31 Days
Continuous
D2403 and 909LW @ Dome E665S and Sundance310P, 909L (310p Sundance - 665s Dome) Dome D2403 Bay Doble and Breaker Maintenance, 909LW CT/Arrestor Doble  
ATCO 06-Jul-22 09:00 08-Jul-22 17:30 2.35 Days
Continuous
848S 913, 848s 913 (848s Ruth Lake) 913 Breaker Maintenance  
SUNCOR 11-Jul-22 00:00 17-Jul-22 00:00 6 Days
Continuous
29PT-334 29EDD94;29PT-334 SYSTEM;PM 5y,10y  
SUNCOR 11-Jul-22 06:00 17-Jul-22 18:00 6.5 Days
Continuous
30EDD-2 46711253 30EDD2;30PK-11 SYSTEM;PM 5y,10y  
EPCOR 11-Jul-22 07:00 15-Jul-22 17:00 4.42 Days
Continuous
TX1 Zone @ Cloverbar E987S, 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar), 987s C2401 (987s Clover Bar), 987s C2403 (987s Clover Bar) Cloverbar TX1 Zone Doble and CDS19/CDS20/CDS24/CDS38 Disconnect Maintenance  
EPCOR 11-Jul-22 07:00 15-Jul-22 17:00 4.42 Days
Continuous
TX2 @ East Industrial E52S, 52s T2 (52s East Industrial) East Industrial TX2 Zone Op-Checks, P&C Maintenance  
EPCOR 11-Jul-22 07:00 23-Jul-22 17:00 12.42 Days
Continuous
1058L @ Lambton E803S and Summerside E657S, 1058L (657s Summerside - EP 803s Lambton) Aerial: Steel Structure Refurbishment  
ATCO 11-Jul-22 08:00 15-Jul-22 14:45 4.28 Days
Continuous
2075S ACF22, 2075S ACF23, 2075S ACF24, 2075s ACF22 (2075s Newell), 2075s ACF23 (2075s Newell), 2075s ACF24 (2075s Newell) Yearly Inspections of ACF 2 Filter Banks - ACF 22/23/24, EATL will be limited t0 750MW while ACF 22/23/24 are out of service  
SUNCOR 11-Jul-22 08:00 24-Jul-22 18:00 13.42 Days
Continuous
29PL9-5/29PL9-6, 29PL9-5 (29EDD-1 Millennium - 29EDD-34), 29PL9-6 (29EDD-1 Millennium - 29EDD-34) Relay settings update will be done sequentially one after the other  
ATCO 11-Jul-22 09:00 14-Jul-22 17:30 3.35 Days
Continuous
856S 901, 856s 901 (856s Kinosis) 901 Breaker Maintenance  
ALTALINK 11-Jul-22 09:00 15-Jul-22 18:00 4.38 Days
Continuous
514L (396s - I_322s - 514L198) - GOI, 514BL (322s Cowley Ridge Wind Plant - 514L tap), 514L (396s Pincher Creek - 514BL tap) CRU and Fire Mitigation on Structures #1 - 189  
ALTALINK 11-Jul-22 10:30 14-Jul-22 17:30 3.29 Days
Daily
138s T2(TX18906), 138kV Bus2 (603L, 608L, 603L (138s Windy Flats - 243s Soderglen Wind Farm), 608L (138s Windy Flats - 418s Ardenville - 528s Blue Trail Wind Farm), 138s T2 (138s Windy Flats) Maintenance, doble, leak repair, bushing and monitor repair (T2). 138kV Breaker Maintenance (138s2152, 138s2552)  
ALTALINK 11-Jul-22 12:00 28-Jul-22 18:00 17.25 Days
Continuous
71s T1 (Tx 18357) - GOI Replace the 240kV and 138kV bushings on T1. Maintenance work (leak repair, bird cleanup)  
ATCO 12-Jul-22 07:00 16-Jul-22 17:00 4.42 Days
Continuous
7L224, 774S 701, 7L224 (650s Hansman Lake - 774s Monitor), 774s 701 (774s Monitor) RAS modifications for the Pattern Lanfine WAGF project (P1898)  
ALTALINK 12-Jul-22 17:00 30-Oct-22 15:00 109.92 Days
Continuous
1135L NEW (39s-Open Point 'H') - GOI Complete 1135L relay testing between 39s and 1047s and Complete 1135L construction  
ALTALINK 12-Jul-22 17:00 30-Oct-22 15:30 109.94 Days
Continuous
1168L NEW (39s-Open Point 'F') - GOI Complete 1168L relay testing between 39s and Open Point 'F' and Complete 1168L construction  
ALTALINK 12-Jul-22 17:00 30-Oct-22 15:30 109.94 Days
Continuous
1084L NEW (39s-Open Point 'O') - GOI Complete 1084L construction, Rename 39s974E to 39s1084  
ALTALINK 15-Jul-22 07:00 05-Aug-22 18:00 21.46 Days
Continuous
20sT1 (Tx 18459) GOI, 20s T1 (20s Ghost) Alignment with TAU Outage to replace Transformer  
SUNCOR 18-Jul-22 00:00 24-Jul-22 00:00 6 Days
Continuous
29PT-335 29EDD94;29PT-335 SYSTEM;PM 5y,10y  
ATCO 18-Jul-22 08:00 22-Jul-22 14:08 4.26 Days
Continuous
2075S BUILDING SVC, 2075S 901T, 2075S 927, 2075S 901T SVC1 Protection, 2075s 901T (2075s Newell), 2075S 927 (2075s Newell), 2075s ACF11 (2075s Newell) Yearly Inspections: SVC 2 Will be unavailable for the duration of the outage.
- Semi Annual Valve Cooling Inspection
- Annual SVC 1 Inspection
- Annual Fire System Testing
- ACF11 equipment inspections
 
ATCO 18-Jul-22 08:00 30-Jul-22 17:00 12.38 Days
Continuous
813S 901T, 813S 901, 813S 905 July 18, 2022 to July 30 2022 - Isolation points will be 901B, 905B and 701TD


Remove panels 3K,4K - install new panel 9T1
901, 905, 901T CT/PT/P&C wiring
Demo existing wiring/cabling
Replace 500PT disconnect assembly
Relay programming and functionality
Commission control, alarms and status
 
ALTALINK 18-Jul-22 12:00 21-Jul-22 18:00 3.25 Days
Continuous
288s T2 TX18900 - GOI, 288s T2 (288s Wolf Creek) First trip PRC5 maintenance, fix oil leaks, doble  
ALTALINK 24-Jul-22 08:00 28-Jul-22 17:00 4.38 Days
Continuous
63s T2 (Tx 18898) - GOI PRC 5 maintenance, fix leaks, test  
ATCO 25-Jul-22 09:00 27-Jul-22 17:30 2.35 Days
Continuous
856S 903T, 856s 903T (856s Kinosis), 856s 906 (856s Kinosis), 856s 903 (856s Kinosis) 903T Maintenance  
ALTALINK 25-Jul-22 09:00 28-Jul-22 18:00 3.38 Days
Continuous
310P T30 - GOI T30 69kV and Neutral Bushings replacement. 69kV LA additions. RSLD3 to be implemented at the end of the outage.  
EPCOR, ALTALINK 25-Jul-22 09:30 06-Aug-22 17:00 12.31 Days
Continuous
1059L and TX1(East Ind) @ East Industrial E52S and Lambton E803S and East Edmonton 38S, 1059L (38s East Edmonton - EP 803s Lambton), 52s T1 (52s East Industrial) Aerial: 1059L Steel Structure Refurbishment
Apparatus: East Industrial 1059L CT/Arrestor/TX1 Doble, EDS1 Disconnect Maintenance
 
ALTALINK 25-Jul-22 11:30 26-Jul-22 17:30 30 Hours
Continuous
251sR1 (TX18859) GOI maintenance, doble  
ALTALINK 26-Jul-22 07:00 27-Jul-22 16:00 1.38 Days
Continuous
879L (244s - 719s - 368s) - GOI Installation of new RAS 180 A and B relays at 368s Burdett. Test RAS trips from 368s Burdett to 719s Rattlesnake Ridge.  
ALTALINK 26-Jul-22 07:00 29-Jul-22 18:00 3.46 Days
Continuous
20s 138kV BUS South GOI, 113L (20s Ghost - 33s Spray), 150L (20s Ghost - 150AL tap), 859L (20s Ghost - AML 793s Horse Creek), 20s 138kV South Bus (20s Ghost) Replace CVT1 and connect to new distribution. Complete T1 CT contributions and trip testing new bus protection, Trip testing Cutover MOD 20s153 to new building and controls  
ATCO 27-Jul-22 07:00 28-Jul-22 17:00 1.42 Days
Continuous
972S 900BS2, 9L16, 9L16 (755s Cordel - 972s Tinchebray), 972s 240kV Bus 900BS2 (972s Tinchebray) Outage on 9L16 to cut the line over to the new bay  
ATCO 27-Jul-22 07:00 31-Jul-22 17:00 4.42 Days
Continuous
7L760, 767S 702, 767s 702 (767s Oyen), 7L760 (767s Oyen - 7LA760 tap) RAS modifications for the Pattern Lanfine WAGF project (P1898)  
ALTALINK 27-Jul-22 09:00 28-Jul-22 17:30 1.35 Days
Continuous
251sR2 (TX18860) GOI maintenance, doble  
ALTALINK 27-Jul-22 11:00 27-Jul-22 15:00 4 Hours
Daily
250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 28-Jul-22 09:00 28-Jul-22 13:00 4 Hours
Daily
250p 22 (250p Bighorn Plant) maintenance  
ATCO 29-Jul-22 07:00 03-Aug-22 17:00 5.42 Days
Continuous
9L177, 9L177 (620s Goldeye - 972s Tinchebray) Installing new 240Kv Bay (connect 907B to BUS 1) for 620S Goldeye substation connection  
ALTALINK 29-Jul-22 08:00 29-Jul-22 16:00 8 Hours
Daily
20s 138kV BUS & Station GOI, 20s Ghost, 20s 138kV South Bus (20s Ghost), 20s 138kV North Bus (20s Ghost) Complete Cutover of MOD 20s14 and functional testing  
ATCO 30-Jul-22 17:00 14-Aug-22 17:00 15 Days
Continuous
813S 901T July 30, 2022 to Aug. 14 2022 will be for work on 901T Isolation points 901TD and 701TD will be used

Remove panels 3K,4K - install new panel 9T1
901, 905, 901T CT/PT/P&C wiring
Demo existing wiring/cabling
Replace 500PT disconnect assembly
Relay programming and functionality
Commission control, alarms and status
 
ATCO 02-Aug-22 00:00 13-Aug-22 00:00 11 Days
Continuous
720S 901T, 720s 901T (720s Wabasca) 720S Wabasca 901T Replacement, Load transferred to 902T  
ATCO 02-Aug-22 08:00 15-Aug-22 16:00 13.33 Days
Continuous
801S 903, 801S 902, 9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Relay Settings changes
 
ATCO 02-Aug-22 08:00 15-Aug-22 16:00 13.33 Days
Continuous
972S 901, 972S 902, 9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Relay Settings Changes
 
SUNCOR 03-Aug-22 06:00 12-Aug-22 18:00 9.5 Days
Continuous
29PL9-13 29EDD34;29PL9-13 SYSTEM;PM 5y,10y
& PRC-023 settings update
 
EPCOR 03-Aug-22 07:00 05-Aug-22 17:00 2.42 Days
Continuous
TX4 Zone @ Poundmaker, T4 (Poundmaker) Poundmaker BUS 3 CVT Doble and PMDS4, PMDS5 Disconnect Maintenance  
SUNCOR 03-Aug-22 08:00 12-Aug-22 18:00 9.42 Days
Continuous
29PL9-13, 29PL9-13 (29EDD-34 - 29EDD-65) 29PL9-13; 29PT-249;MTCE & TEST;(A)5Y  
ATCO 07-Aug-22 08:00 15-Aug-22 16:00 8.33 Days
Continuous
9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Line 9LA59 tie-in to Garden Plain Sub
 
SUNCOR 08-Aug-22 06:00 14-Aug-22 18:00 6.5 Days
Continuous
29EDD-3 29Edd-3 transforme Line protection upgrade and 29PT-5 replace PRD  
SUNCOR, ATCO 08-Aug-22 06:00 19-Aug-22 18:00 11.5 Days
Continuous
621T, 836s 621T (836s Steep Bank) 30EDD1;XFMR 621T SYSTEM;PM 5y,10y
30EDD2;30PL2-1 SYSTEM;PM 5y
Replace Bushings in 621T in 30EDD-1
30EDD-1 621T Oil Leaks
 
EPCOR 08-Aug-22 07:00 13-Aug-22 17:00 5.42 Days
Continuous
D2402 @ Dome E665S, 665s D2402 (665s Dome) Dome D2402 Bay Doble and Breaker Maintenance  
ALTALINK 08-Aug-22 07:15 11-Aug-22 17:45 3.44 Days
Continuous
624L (312s - 354s) GOI Install Perch Deterrents (Str 4, 5, 6)  
ATCO 08-Aug-22 08:00 11-Aug-22 17:00 3.38 Days
Continuous
9L29, 9L29 (946s Oakland - 963s Coyote Lake) BER Hand Hills Project P & C circuit cutovers commission  
ALTALINK 08-Aug-22 09:00 11-Aug-22 16:00 3.29 Days
Continuous
562s 138kV & 240kV Bus 2 - GOI New 138kV Bus 2 ‘B’ Protection being installed. Will need to cutover CT circuits and trip test breakers on 138kV Bus 2.  
ATCO 08-Aug-22 09:00 26-Aug-22 17:30 18.35 Days
Continuous
13L50 (DC LINK), 13L50 (2029s Heathfield - 2075s Newell) EATL OUTAGE
- Valve Hall Inspections
- PRC-005 Testing
- Fire System Tests
- Repair Ground Switches
 
ATCO 08-Aug-22 09:00 26-Aug-22 17:30 18.35 Days
Continuous
Heathfield, 2029s 1205 (2029s Heathfield), 2029s 1206 (2029s Heathfield) 2029S - HEATHFIELD OUTAGE
- Valve Hall Inspections
- PRC-005 Testing
- Fire System Tests
- Repair Ground Switches
 
ATCO 08-Aug-22 09:00 26-Aug-22 17:30 18.35 Days
Continuous
Newell, 2075s 916 (2075s Newell), 2075s 917 (2075s Newell) 2075S - NEWELL OUTAGE
- Valve Hall Inspections
- PRC-005 Testing
- Fire System Tests
- Repair Ground Switches
 
ALTALINK 08-Aug-22 09:15 11-Aug-22 17:45 3.35 Days
Continuous
893L (312s - 112s - 806s) GOI, 893L (312s Fidler - 806s Oldman River), 893AL (112s Windy Point - 893L tap) Istall Perch Deterrents (Str 72J, 73J, 74J)  
ALTALINK 08-Aug-22 11:30 11-Aug-22 17:30 3.25 Days
Continuous
410s352 – GOI, 410s 352 (410s Josephburg) 410s352 CT replacement  
ALTALINK 08-Aug-22 12:00 18-Aug-22 18:00 10.25 Days
Continuous
310p2752 – GOI 310p2752 breaker replacement  
ATCO 08-Aug-22 19:00 12-Aug-22 18:00 3.96 Days
Continuous
9L93, 9L93 (615s Halkirk - 972s Tinchebray) 5 Year Substation Maintenance  
EPCOR 15-Aug-22 07:00 20-Aug-22 17:00 5.42 Days
Continuous
D2401 @ Dome E665S, 665s D2401 (665s Dome) Dome D2401 Bay Doble and Breaker Maintenance  
ALTALINK 15-Aug-22 09:00 18-Aug-22 16:00 3.29 Days
Continuous
562s 138kV & 240kV Bus 1 - GOI, 562s 240kV Bus 1 (562s Cypress), 562s 138kV Bus 1 (562s Cypress), 562s T1 (562s Cypress) New 138kV Bus 1 ‘B’ Protection being installed. Will need to cutover CT circuits and trip test breakers on 138kV Bus 1.  
ALTALINK 15-Aug-22 10:30 16-Aug-22 17:30 31 Hours
Continuous
320P2152 – GOI, 320p 2152 (320p Keephills) Top up low gas in breaker  
ALTALINK 15-Aug-22 11:30 17-Aug-22 17:30 2.25 Days
Continuous
281s T1(TX18897) GOI, 281s T1 (281s Johnson) Maintenance, doble  
ENMAX, ALTALINK 16-Aug-22 08:00 16-Aug-22 12:00 4 Hours
Continuous
693L. 10.2TR. 10PT138-Z31, 693L (42s Sarcee - ENMAX 10) Summer Substation Washing  
ENMAX, ALTALINK 16-Aug-22 12:00 16-Aug-22 18:00 6 Hours
Continuous
832L. 10.1TR. 10PT138-Z31, 832L (ENMAX 10 - ENMAX 12) Summer Substation Washing  
ALTALINK 17-Aug-22 09:00 18-Aug-22 17:30 1.35 Days
Continuous
320P3152 – GOI, 320p 3152 (320p Keephills) Top up low gas in breaker  
ALTALINK 17-Aug-22 23:00 18-Aug-22 03:00 4 Hours
Continuous
62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 18-Aug-22 03:00 18-Aug-22 07:00 4 Hours
Daily
62s 12 (62s Brazeau Plant) maintenance  
ENMAX, ALTALINK 18-Aug-22 08:00 18-Aug-22 10:00 2 Hours
Continuous
5sT1, 5s T1 (5s East Calgary) Summer Substation Washing  
ENMAX, ALTALINK 18-Aug-22 10:00 18-Aug-22 12:00 2 Hours
Continuous
5sT2, 5s T2 (5s East Calgary) Summer Substation Washing  
SUNCOR, ATCO 22-Aug-22 06:00 31-Aug-22 18:00 9.5 Days
Continuous
30PL2-2, 836s 622T (836s Steep Bank) 30EDD2;30PL2-2 SYSTEM PM;5y
Install RFCT on 30PL2-2
 
ATCO 22-Aug-22 08:00 29-Aug-22 16:00 7.33 Days
Continuous
766S 901T, 766s 901T (766s Nevis) Joss Jenner 2 Power Project Connection, complete CT, PT, P&C cutover, commission
 
ALTALINK 22-Aug-22 09:00 25-Aug-22 16:00 3.29 Days
Continuous
244s 138kV & 240kV Bus 1 - GOI, 244s138kV Bus 1 (244s Bowmanton), 244s 240kV Bus 1 (244s Bowmanton), 244s T1 (244s Bowmanton) New 138kV Bus 1 ‘B’ Protection being installed. Will need to cutover CT circuits and trip test breakers on 138kV Bus 1.  
EPCOR, ALTALINK 22-Aug-22 09:30 26-Aug-22 17:00 4.31 Days
Continuous
1045L Zone and J2407 @ Jasper Terminal E805S and Sundance 310P, 1045L (310p Sundance - 320p Keephills - 805s Jasper) Jasper 1045L Zone Doble and J2407 Doble and Maintenance  
ATCO 22-Aug-22 10:00 24-Aug-22 16:00 2.25 Days
Continuous
885S 501, 885S 902T, 885s 902T (885s McMillan) 902T PRC005, 501 Maintenance.  
ATCO 22-Aug-22 10:00 25-Aug-22 16:00 3.25 Days
Continuous
885S 902, 885s 902 (885s McMillan) 902 Maintenance  
ALTALINK 22-Aug-22 12:00 24-Aug-22 18:00 2.25 Days
Continuous
310p T36 - GOI, 310p T36 (310p Sundance) 310P T36 bushing replacement  
ALTALINK 24-Aug-22 07:00 25-Aug-22 07:00 24 Hours
Continuous
250p 22 (250p Bighorn Plant) maintenance  
ALTALINK 24-Aug-22 07:00 25-Aug-22 07:00 24 Hours
Continuous
250p 11 (250p Bighorn Plant) maintenance  
ATCO 27-Aug-22 08:00 11-Sep-22 17:00 15.38 Days
Continuous
813S 902T, 813S 904, 813S 908 Aug. 30, 2022 to Sept. 11, 2022 - Isolation points will be 904B, 908B and 702TD

Decommission Panels 1K, 2K. Complete wiring of NEW 9T2 Panel
904, 908, 902T CT/PT/P&C wiring
Replace 500PT disconnect assembly
Demo existing wiring/cabling
Commissioning and relay testing
 
EPCOR 29-Aug-22 07:00 02-Sep-22 17:00 4.42 Days
Continuous
TX3 Zone @ Lambton E803S, EP 803s T3 (EP 803s Lambton) Lambton TX3 Zone Doble and LAB3/LDS10/LDS11 Disconnect Maintenance  
ALTALINK 29-Aug-22 07:00 09-Sep-22 17:00 11.42 Days
Continuous
1325L WATL (510s-511s)-GOI, 1325L (510s Sunnybrook - AML 511s Crossings) WATL Annual Link Outage, DC Yard maintenance, Valve Hall Grading Electrode Inspections, VCS work, TDC troubleshooting and capital work at 511s; Negative fusing install on Motor Mechs.  
ALTALINK 29-Aug-22 09:00 01-Sep-22 16:00 3.29 Days
Continuous
244s 138kV & 240kV Bus 2 - GOI, 244s 240kV Bus 2 (244s Bowmanton), 244s138kV Bus 2 (244s Bowmanton), 244s T2 (244s Bowmanton) New 138kV Bus 2 ‘B’ Protection being installed. Will need to cutover CT circuits and trip test breakers on 138kV Bus 2.  
ATCO 01-Sep-22 08:00 08-Sep-22 16:00 7.33 Days
Continuous
7L129, 7L129 (710s Vermilion - 7LA129 tap) New construction on Phase 2 of 7L65 but just out side Vermillion 7L129 and 7L65 are sharing the same structure.  
ATCO 03-Sep-22 08:00 04-Sep-22 17:00 1.38 Days
Continuous
7L03, 7L03 (749s Flyingshot Lake - 7L03D2) relay work for 731S Elmworth Project  
ATCO 05-Sep-22 08:00 30-Sep-22 16:00 25.33 Days
Continuous
972S 900BS2, 972s 240kV Bus 900BS2 (972s Tinchebray) CETO project  
EPCOR, ALTALINK 06-Sep-22 07:00 10-Sep-22 17:00 4.42 Days
Continuous
930L @ Poundmaker and North Calder 37S, 930L (37s North Calder - Poundmaker) Poundmaker 930L Zone Arrestor/CVT Doble, PMDS6/PMDS7/PMDS10 Disconnect Maintenance  
ALTALINK, BCH 06-Sep-22 09:00 09-Sep-22 18:00 3.38 Days
Continuous
1L275/786L (799s-NTL - BCH Placeholder, 1L275 (799s Coleman - Natal) BC Hydro has advised of tentative plan for 1L275/786L outage. AB-BC
ATCO 07-Sep-22 08:00 07-Sep-22 17:00 9 Hours
Continuous
7L69, 7L69 (731s Elmworth - 815s Goodfare) 731S Elmworth Project
Test and Operate 815S 704
 
ATCO 08-Sep-22 08:00 08-Sep-22 17:00 9 Hours
Continuous
7L22, 7L22 (790s Poplar Hill - 7L88 tap), 7L22 (811s Clairmont Lake - 7L88 tap) 731S Elmworth Project  
ATCO 09-Sep-22 08:00 09-Sep-22 17:00 9 Hours
Continuous
7L07, 7L07 (790s Poplar Hill - 815s Goodfare) 731S Elmworth Project  
ATCO 10-Sep-22 08:00 11-Sep-22 17:00 1.38 Days
Continuous
766S 901T, 766s 901T (766s Nevis) Sharp Hills Project
Installation of new RAS panel at 766S Nevis
 
ATCO 11-Sep-22 17:00 02-Oct-22 12:00 20.79 Days
Continuous
813S 902T, 813s 902T (813s Little Smoky) Sept.11, 2022 to Oct. 3, 2022 - Isolation will be 902TD and 702TD

Decommission Panels 1K, 2K. Complete wiring of NEW 9T2 Panel
902T CT/PT/P&C wiring
Replace 500PT disconnect assembly
Demo existing wiring/cabling
Commissioning and relay testing
 
EPCOR, ALTALINK 12-Sep-22 09:30 23-Sep-22 17:00 11.31 Days
Continuous
1209L, 1208/1209 Bay @ Genesee 330P and Ellerslie 89S, 1209L (89s Ellerslie - 330p Genesee) Genesee 1209L Arrestor Doble, 1208/1209 Breaker Maintenance and Doble, 1208B/1209A/1209LLD Disconnect Maintenance  
ALTALINK 12-Sep-22 12:00 23-Sep-22 17:30 11.23 Days
Continuous
256s T1 (Tx 18555) - GOI, 256s T1 (256s Harmattan) T1 Oil reclaim work, maint, doble, SFRA, Winding test, Oil leak repairs & Coresense install  
ALTALINK 13-Sep-22 08:30 13-Sep-22 16:30 8 Hours
Daily
245s87W (87L) GOI, 87L (2s Kananaskis - 245s Seebe) 138kV breaker maintenance  
ATCO 16-Sep-22 08:00 18-Sep-22 17:00 2.38 Days
Continuous
9L46, 9L46 (932s Pemukan - 959s Lanfine) Sharp Hills Project
Outage for structure foundations work directly under 9L46
 
EPCOR, ALTALINK 19-Sep-22 07:00 30-Sep-22 17:00 11.42 Days
Continuous
1044L, PDS10, PDS15 @ Petrolia E816S and Jasper Terminal E805S, 1044L (805s Jasper - 816s Petrolia) Petrolia PDS10, PDS14, PDS15 LCR  
EPCOR 19-Sep-22 07:00 30-Sep-22 17:00 11.42 Days
Continuous
TX5 and 240CV5 Zone @ Victoria E511S and Castledowns E557S, CV5 (EP 511s Victoria - 557s Castle Downs), EP 511s Victoria T5 (EP 511s Victoria) Victoria TX5 and CV5 Zone
P&C Crew: TX5 and CV5 Zone Op-Checks and Maintenance
UGT Crew: CV5 Manhole Inspections and Maintenance
 
ATCO 19-Sep-22 08:00 29-Sep-22 17:00 10.38 Days
Continuous
7L760 (767s Oyen - 7LA760 tap) GOI required on 7L760 for cross arm & insulator replacement project.  
EPCOR, ALTALINK 19-Sep-22 09:30 23-Sep-22 17:00 4.31 Days
Continuous
908L and TX2 @ East Industrial E52S and Ellerslie 89S and East Edmonton 38S, 908L (38s East Edmonton - 89s Ellerslie), 52s T2 (52s East Industrial) East Industrial 908L CVT/Arrestor/TX2 Doble and EDS2/E2T2 Maintenance  
ALTALINK 19-Sep-22 12:00 22-Sep-22 18:00 3.25 Days
Continuous
89s652 - GOI, 89s 652 (89s Ellerslie) 1st trip & PRC5 maintenance & change leaking capacitors  
ALTALINK 19-Sep-22 12:30 22-Sep-22 17:30 3.21 Days
Continuous
310p2152 – GOI, 310p 2152 (310p Sundance) Breaker maintenance including 1st trips  
SUNCOR 20-Sep-22 06:00 29-Sep-22 18:00 9.5 Days
Continuous
SK2 PL2-2 30EDD2;30PL2-2 SYSTEM PM;5y
Install RFCT on 30PL2-2
 
ALTALINK 23-Sep-22 07:00 07-Oct-22 11:00 14.17 Days
Continuous
658L & 674L (649s Station) - GOI, 649s T1 (649s Chappice Lake), 658L (562s Cypress - 649s Chappice Lake), 674L (244s Bowmanton - 649s Chappice Lake) Installation of new A and B line protections at 244s Bowmanton, 649s Chappice Lake, 662s Hilda (New substations) and 562s Cypress. Installation of New CTs, CVT’s and Switch at 649s Chappice Lake.  
SUNCOR 26-Sep-22 06:00 02-Oct-22 18:00 6.5 Days
Continuous
29PP-41F 29EDD56;29PP-41F SYSTEM;PM 5y  
EPCOR 26-Sep-22 07:00 29-Sep-22 17:00 3.42 Days
Continuous
72kV BUS 1/2 (CH9, CN10) @ Cloverbar E987S and Namao and Hardisty, 72CH9 (987s Clover Bar - EPCOR Hardisty), 987s CGB3 (987s Clover Bar), 987s CC13 (987s Clover Bar), 987s CC24 (987s Clover Bar), 987s C1 (987s Clover Bar), 987s GB1B (987s Clover Bar) Cloverbar Arrestor Support Replacement, BUS 1/2 CVT Doble, CDS2/CDS6/CDS7/GDS1B1 Disconnect Maintenance  
ALTALINK 26-Sep-22 09:00 07-Oct-22 18:00 11.38 Days
Continuous
1201L/5L94 (520s - B2s) - GOI, 1201L (520s Bennett - BCH Cranbrook) Component Replacements on Structures #45 - 459 AB-BC
BHE Canada 26-Sep-22 09:00 07-Oct-22 18:00 11.38 Days
Continuous
MATL (120s Picture Butte - Montana) align with 1201L outage AB-MATL
ALTALINK 26-Sep-22 10:30 29-Sep-22 17:30 3.29 Days
Continuous
74s T1(TX18570) GOI, 74s T1 (74s Janet) Transformer maintenance, doble, leak repairs  
ALTALINK, ATCO 29-Sep-22 07:30 29-Sep-22 11:30 4 Hours
Daily
395s77E (7L77) – GOI, 7L77 (395s North Holden - 709s Vegreville) Commission new T1 tripping module trips to 252. Commissioning of new SCADA alarms, controls, and metering. Demo existing interchange meter and indicating meters. No TPG required as all work will be in the control building.  
EPCOR 03-Oct-22 07:00 14-Oct-22 17:00 11.42 Days
Continuous
PDS6, PDS7, 1164L @ Petrolia E816S and Riverview, 1164L (816s Petrolia - EPCOR Riverview) Petrolia PDS6 and PDS7 and 1164L CVT LCR's and PDS12 Disconnect Maintenance  
ATCO 03-Oct-22 08:00 12-Oct-22 17:00 9.38 Days
Continuous
7L760 (767s Oyen - 7LA760 tap) GOI required on 7L760 for cross arm & insulator replacement project.  
ALTALINK 03-Oct-22 12:00 06-Oct-22 18:00 3.25 Days
Continuous
28s T1 (Tx 18701) - GOI, 28s T1 (28s West Brooks) 28sT1 Maintenance, doble  
ALTALINK, ENMAX 04-Oct-22 10:00 06-Oct-22 17:00 2.29 Days
Continuous
44s 138kV Bus (50L & 36.81L) - GOI, 50L (44s Bearspaw Plant - ENMAX 21), 36.81L (44s Bearspaw - ENMAX 36) 44s36 switch replacement, 50L strain insulator replacement  
ALTALINK 05-Oct-22 09:30 06-Oct-22 17:30 1.33 Days
Continuous
37s81 – GOI, 37s 81 (37s North Calder) Breaker maintenance including 1st trips, fix counter.  
ALTALINK 05-Oct-22 23:00 06-Oct-22 03:00 4 Hours
Continuous
62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 06-Oct-22 03:00 06-Oct-22 07:00 4 Hours
Daily
62s 12 (62s Brazeau Plant) maintenance  
ALTALINK, Lethbridge 11-Oct-22 07:30 13-Oct-22 17:30 2.42 Days
Continuous
725L (15s-240s-L674s) - GOI, 725BL (240s McBride Lake - 725L tap), 725L (15s Fort MacLeod - 725BL tap), 725L (674s Lethbridge Bowron - 725BL tap) 725L fire mitigation - placeholder  
ALTALINK, Lethbridge 12-Oct-22 07:30 13-Oct-22 16:00 1.35 Days
Continuous
725L (674s Lethbridge Bowron - 725BL tap), 725L (15s Fort MacLeod - 725BL tap) 725LW Line Maintenance, 674s Switch Maintenance  
ALTALINK, Lethbridge 12-Oct-22 07:30 13-Oct-22 16:00 1.35 Days
Continuous
725L (111s Coalbanks - 725AL tap), 725L (674s Lethbridge Bowron - 725AL tap) 725LE Line Maintenance, 674s Switch Maintenance  
ATCO 12-Oct-22 08:00 25-Oct-22 17:00 13.38 Days
Continuous
830S 701T, 7L08 (830s Carmon - 834s Wesley Creek), 830s 701T (830s Carmon) Transformer 701T Protection upgrade. - require 501VRB as added isolation but not available on the drop down list. Parallel 902S and 501VR, close 599TD, open 701TCS, 501VRB, and 501VRX.  
ALTALINK 12-Oct-22 11:00 12-Oct-22 15:00 4 Hours
Daily
250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 13-Oct-22 09:00 13-Oct-22 13:00 4 Hours
Daily
250p 22 (250p Bighorn Plant) maintenance  
EPCOR 17-Oct-22 07:00 28-Oct-22 17:00 11.42 Days
Continuous
TX2 Zone @ Bellamy E814S, 814s T2 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
ALTALINK 17-Oct-22 07:30 21-Oct-22 16:30 4.38 Days
Continuous
511s SCV Plus GOI, AML 511s SVC Plus (AML 511s Crossings) SVC Plus VCS maintenance, fence repair on Reactors and IGBT Inspection..  
ATCO 17-Oct-22 08:00 26-Oct-22 17:00 9.38 Days
Continuous
7L760 (767s Oyen - 7LA760 tap) GOI required on 7L760 for cross arm & insulator replacement project.  
EPCOR, ALTALINK 17-Oct-22 09:30 28-Oct-22 17:00 11.31 Days
Continuous
908L, P2401, P2406 @ Petrolia E816S and Ellerslie 89S, 908L (89s Ellerslie - 816s Petrolia) Petrolia PDS1, PDS13, PDS16 LCR  
ATCO, ALTALINK 17-Oct-22 11:00 21-Oct-22 15:00 4.17 Days
Continuous
7L77, 7L77 (395s North Holden - 709s Vegreville) GOI required on 7L77 for cross arm and insulator replacement.  
ALTALINK 18-Oct-22 07:00 06-Nov-22 18:00 19.5 Days
Continuous
1034L (244s - 324s) - GOI, 1034L (244s Bowmanton - 324s Cassils) Damper replacement between Structures #32-243 & 368-389  
ATCO 22-Oct-22 07:00 02-Nov-22 17:00 11.42 Days
Continuous
7L129, 7L129 (710s Vermilion - 918s Bauer) Re stringing conductor  
ATCO 23-Oct-22 08:00 06-Nov-22 12:00 14.21 Days
Continuous
7L45, 7L45 (798s Bridge Creek - 845s Big Mountain) 813S Little Smoky Rebuild813S Little Smoky Rebuild
BKR 703 and 704 P&C wiring, remove old panel 7G, set up new panel 7P4, prep work
Relay programming and functionality
Commission control, alarms and status
 
ATCO 24-Oct-22 08:00 31-Oct-22 17:00 7.38 Days
Continuous
9L46, 9L46 (932s Pemukan - 959s Lanfine) Sharp Hills Project
Outage for Line termination to 363S Sedalia on 9L46
 
ALTALINK 24-Oct-22 10:00 27-Oct-22 17:00 3.29 Days
Continuous
44s 138kV Bus (T1, T2, 860L & 25kV Bus), 860L (44s Bearspaw Plant - 291s Cochrane), 44s T1 (44s Bearspaw Plant), 44s T2 (44s Bearspaw Plant) 44s34 switch replace, 860L strain insulator replacement, 860L VSR salvage, 44s35 adjust, 44s860w current sensing fail  
EPCOR, ALTALINK 31-Oct-22 07:00 10-Nov-22 17:00 10.46 Days
Continuous
1055L, P2402, P2403 @ Petrolia E816S and Argyll Transfer Station E629S, 1055L (629s Argyll Transfer Station - 816s Petrolia) Petrolia PDS4, PDS5, PDS11 LCR  
EPCOR 31-Oct-22 07:00 10-Nov-22 17:00 10.46 Days
Continuous
TX1 Zone @ Bellamy E814S, 814s T1 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
ATCO 31-Oct-22 08:00 09-Nov-22 17:00 9.42 Days
Continuous
7L760 (767s Oyen - 7LA760 tap) GOI required on 7L760 for cross arm & insulator replacement project.  
ALTALINK 31-Oct-22 09:00 03-Nov-22 17:00 3.33 Days
Continuous
158s T2 & 25kV Bus - GOI, 158s T2 (158s Vauxhall) -Capital: 138kv Bushing Replacement Maintenance: 158s T1 leaks and maint., 158s6 seized switch, 158s16 hot switch  
ALTALINK, ENMAX 31-Oct-22 10:00 04-Nov-22 17:00 4.29 Days
Continuous
44s 138kV Bus (50L & 36.81L) - GOI, 50L (44s Bearspaw Plant - ENMAX 21), 36.81L (44s Bearspaw - ENMAX 36) 44s38 switch replace, 36.18L PT addition, 36.18L strain insulator replace, 36.18L VSR salvage  
ATCO 08-Nov-22 08:00 08-Nov-22 17:00 9 Hours
Continuous
7L32 (813s Little Smoky - 862s South Bezanson) 862S S. Bezanson Substation Rebuild Project, Disconnect and remove 7L32PT2 and 7L32PT3  
EPCOR 14-Nov-22 07:00 25-Nov-22 17:00 11.42 Days
Continuous
P2402, P2401, TX1 @ Petrolia E816S, 816s T1 (816s Petrolia) Petrolia PDS2, PDS3 LCR  
ATCO 14-Nov-22 09:00 25-Nov-22 17:30 11.35 Days
Continuous
13L50 (DC LINK), 13L50 (2029s Heathfield - 2075s Newell) EATL OUTAGE
- Valve Hall Inspections
- PRC-005 Testing
- Fire System Tests
- Repair Ground Switches
 
EPCOR 14-Nov-22 09:30 25-Nov-22 17:00 11.31 Days
Continuous
240BA2 Zone @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy) Bellamy 240kV SF6 Maintenance  
ATCO, ALTALINK 16-Nov-22 07:00 05-Dec-22 18:00 19.46 Days
Continuous
1035L (244s Bowmanton - 2075s Newell), 1035L (244s - A2075s) - GOI Damper replacement between Structures #32-243 & 368-389  
ALTALINK 16-Nov-22 07:15 16-Nov-22 12:45 5.5 Hours
Daily
20sT1 (Tx 18459) GOI, 20s T1 (20s Ghost) Trip testing of 20s30, 20s2, 20s3, and 20s4 from relocated A87/138B Bus protection  
ATCO 20-Nov-22 12:01 04-Dec-22 17:00 14.21 Days
Continuous
7L32, 7L32 (811s Clairmont Lake - 862s South Bezanson) 813S Little Smoky Rebuild
BKR 701 and 702 P&C wiring in panel 7P1, prep work
Demo panel 1G
Relay programming and functionality
Commission control, alarms and status
 
ALTALINK 23-Nov-22 23:00 24-Nov-22 03:00 4 Hours
Continuous
62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 24-Nov-22 03:00 24-Nov-22 07:00 4 Hours
Daily
62s 12 (62s Brazeau Plant) maintenance  
EPCOR 28-Nov-22 07:00 09-Dec-22 17:00 11.42 Days
Continuous
240BA3 Zone @ Bellamy E814S and Argyll Transfer Station E629S, 240BA3 (629s Argyll Transfer Station - 814s Bellamy) Bellamy 240kV SF6 Maintenance  
EPCOR 28-Nov-22 07:00 09-Dec-22 17:00 11.42 Days
Continuous
TX2, PDS8, PDS9 @ Petrolia E816S, 816s T2 (816s Petrolia) Petrolia PDS8, PDS9 LCR and TX2 DGA Install  
ALTALINK 30-Nov-22 11:00 30-Nov-22 15:00 4 Hours
Daily
250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 01-Dec-22 09:00 01-Dec-22 13:00 4 Hours
Daily
250p 22 (250p Bighorn Plant) maintenance  
ATCO 11-Jan-23 07:00 22-Feb-23 17:00 42.42 Days
Continuous
730S 700 BUS 1, 7L73 (730s Rycroft - 829s Boucher Creek) SVC addition and 144 kv bus rebuild.  
ATCO 27-Jan-23 08:00 07-Feb-23 17:00 11.38 Days
Continuous
75-PLH-902, 75-PHL-902 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
 
ATCO 07-Feb-23 08:00 20-Feb-23 17:00 13.38 Days
Continuous
7L54, 7L54 (794s Valleyview - 813s Little Smoky) 813S Little Smoky Rebuild813S Little Smoky Rebuild
BKR 703 and 704 P&C wiring, remove old panel 7G, set up new panel 7P4, prep work
Relay programming and functionality
Commission control, alarms and status
 
ATCO 08-Feb-23 08:00 19-Feb-23 17:00 11.38 Days
Continuous
75-PLH-901, 849s 907 (849s Joslyn Creek), 75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
 
ATCO 20-Feb-23 08:00 23-Feb-23 17:00 3.38 Days
Continuous
9L66, 9L66 (847s Muskeg River - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing line 9L66 at tap point and connect new line segment to 838S Horizon Expansion
Disconnect existing 9L66 from Joslyn 849S
Commissioning upgrade - relay settings @ 847S
 
ATCO 24-Feb-23 08:00 27-Feb-23 17:00 3.38 Days
Continuous
9L32, 9L32 (849s Joslyn Creek - 2005s Secord) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing line 9L32 at tap point and connect new line segment to 838S Horizon Expansion
Disconnect existing 9L32 from Joslyn 849S
Commissioning upgrade - relay settings @ 2005S
 
ATCO 07-Mar-23 08:00 27-Mar-23 17:00 20.33 Days
Continuous
7L40, 7L40 (733s Simonette - 813s Little Smoky) 813S Little Smoky Rebuild
Complete 7L40 wiring panel 7P5, 709, 710 CT/PT/P&C
wiring. Demo existing wiring/cabling, remove old
panel 4G
Relay programming and functionality
Commission control, alarms and status
 
ATCO 27-Mar-23 08:00 30-Mar-23 17:00 3.38 Days
Continuous
7L91, 7L91 (715s Leming Lake - 826s Marguerite Lake) Cold Lake Area Energy Centre Project
Cutover CT/PT/P&C ccts for new Thermal RAS relays
Complete commissioning 49A/49B/7L91 relays
End-to-end testing to 1064S
 
ATCO 17-Apr-23 08:00 07-May-23 00:17 19.68 Days
Continuous
7L01, 7L01 (813s Little Smoky - 881s Sturgeon) 813S Little Smoky Rebuild
Complete 7L01 wiring panel 7P3, 711, 712 CT/PT/P&C
wiring. Demo existing wiring/cabling, remove old
panel 8G
Relay programming and functionality
Commission control, alarms and status
 
SUNCOR 01-May-23 08:00 14-May-23 18:00 13.42 Days
Continuous
29EDD-1, 29EDD-1 Millennium N260B1 + Relays, 29CVT-11, 29PS-72/76.
29EDD-1S1/1S7/1S13/1S452/1S152 + Relays,
952-101/104 + Controller + Relays
assets
 
SUNCOR 01-May-23 08:00 30-May-23 18:00 29.42 Days
Continuous
29EDD-94, 29EDD-94 Voyageur 29EDD94; breaker maintenance & test  
ATCO 07-May-23 08:00 10-Jul-23 17:00 64.38 Days
Continuous
766S 144KV Bus, 766S 240KV Bus, 766s 701T (766s Nevis) 766S Nevis Rebuild Project - Replace and commission 9L912D1, 9L20D2, 901, 902, 901CT, 902CT, 901A, 902A, 900PT1, connect new bus section  
ATCO 08-May-23 08:00 28-May-23 17:00 20.38 Days
Continuous
7L46, 7L46 (813s Little Smoky - 845s Big Mountain) 813S Little Smoky Rebuild
 
ATCO 22-May-23 08:00 29-May-23 17:00 7.38 Days
Continuous
9L16, 9L16 (755s Cordel - 972s Tinchebray) Upgrade 21A/B-9L16 protection relay wiring/programming and commission LTO/DTT  
ATCO 26-Jun-23 08:00 01-Jul-23 17:00 5.38 Days
Continuous
9L93, 9L93 (615s Halkirk - 972s Tinchebray) Connect new 9LA93 T-tap. Cut in, reroute, restring, and splice OPGW from Str#60 to 615S Halkirk. Complete cutover and commission Protection/SCADA/Telecom at new 973S Lanes Lake, 972S, 615S Halkirk  
ATCO 17-Jul-23 08:00 23-Jul-23 17:00 6.38 Days
Continuous
766S 144KV Bus, 766S 240KV Bus, 7L143 (766s Nevis - 769s Stettler) 766S Nevis Rebuild Project - Upgrade bus to bundled 477, connect new 704A, P&C wiring and commissioning, Energize new 903T and 7L143, Close 903A and 704A (Jumper J3 remains open)  
ATCO 05-Aug-23 08:00 30-Aug-23 17:00 25.38 Days
Continuous
788s 701T (788s Hotchkiss), 788s 701R (788s Hotchkiss), 7L82 (788s Hotchkiss - 855s Hamburg), 7L63 (788s Hotchkiss - 7LA63 tap), 7L120 (788s Hotchkiss - 905s Meikle), 7L138 (788s Hotchkiss - 905s Meikle), 7L51 (788s Hotchkiss - 927s Buchanan Creek) remove 701TCS, add NEW 707 breaker and switch 707A. Add NEW 701T  
ENMAXEC 15-Jul-24 08:00 19-Jul-24 18:00 4.42 Days
Continuous
383s T1 (383s Kettles Hill Windfarm), 383s T2 (383s Kettles Hill Windfarm) substation maintenance  

AB-BC, AB-SK & AB-MATL: refer to AESO web posting: http://itc.aeso.ca/itc/public/atc
Also,
AB-BC, AB-SK & AB-MATL: refer to ISO Rule 203.6: http://www.aeso.ca/rulesprocedures/18592.html

Prepared On: 2022-04-13   13:51:35


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