Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2022-06-04

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.

Previous Version
Download CSV

Owner From To Duration Element Scheduled Activity Affected Intertie
ATCO 09-Dec-21 13:00 31-Aug-22 17:00 265.13 Days
Continuous
863s 902T (863s Paintearth) forced outage and troubleshooting  
NWE, BHE Canada, BHE 18-Mar-22 16:30 20-Jun-22 23:59 94.31 Days
Continuous
Marias South Series Capacitor, North Series Capacitor (BHE Hay Lake) repair series capacitor bypass breaker AB-MATL
NWE, BHE Canada 12-Apr-22 12:00 20-Jun-22 23:59 69.5 Days
Continuous
Marias South Series Capacitor urgent- replace the Marias series capacitor bypass breaker 2385 Phase B AB-MATL
ALTALINK 04-May-22 07:00 24-Jun-22 15:00 51.33 Days
Continuous
250p 11 (250p Bighorn Plant) maintenance  
ATCO 15-May-22 12:01 12-Jun-22 12:00 28 Days
Continuous
9L02 (809s Louise Creek - 813s Little Smoky), 813s 906 (813s Little Smoky), 813s 908 (813s Little Smoky) 813S Little Smoky Rebuild - remove panels, breaker 905 and 906 P&C wiring, relay programming and functionality testing  
ATCO 16-May-22 12:00 09-Jun-22 12:00 24 Days
Continuous
951s 908 (951s Thickwood Hills) addition of NEW bus on 900BS2, construction, commissioning  
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)  
ALTALINK 30-May-22 07:00 07-Jun-22 18:30 8.48 Days
Continuous
745L (602s - 745L482) - GOI, 602s 745N (602s Cold Creek), 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 30-May-22 11:00 04-Jun-22 18:00 5.29 Days
Continuous
410s T1 (410s Josephburg) 410sT1 25kV neutral & 138kV bushing replacement  
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 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 10-Jun-22 17:00 4.42 Days
Continuous
1203 Bay @ Genesee 330P, 330p 1203 (330p Genesee) Genesee 1203 Bay Breaker Maintenance and CT Doble  
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
919L (310P-77s) - GOI, 919L (77s Sagitawah - 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 10:00 09-Jun-22 16:00 3.25 Days
Continuous
7L224 (650s Hansman Lake - 774s Monitor) 7L224 Crossarm/Insulator replacement.  
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 06-Jun-22 14:00 06-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, 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), 205s 89T2 (205s Castle Rock Ridge), 205s 52M2 (205s Castle Rock Ridge) maintenance  
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 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
68s Station - GOI, 68s Willesden Green, 68s T1 (68s Willesden Green), 68s T2 (68s Willesden Green), 68s 152 (68s Willesden Green), 68s 552 (68s Willesden Green) 68s PT1 240kV PT replacement. Replace 68s5. Repair leaks on 68s T3. Maintenance on 995L, 3103L, & 495LW protections. Update settings on T1 & 96/152 protections. Transition to 68s T2 & 25kV Bus 2 – GOI & 68s495 – GOI after this outage is complete  
ALTALINK 08-Jun-22 08:00 08-Jun-22 17:00 9 Hours
Daily
974L (310P-39s) - GOI, 974L (39s Bickerdike - 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, 68s T2 (68s Willesden Green), 68s 552 (68s Willesden Green) 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 09-Jun-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 09-Jun-22 07:00 10-Jun-22 15:30 1.35 Days
Continuous
205s 13 (205s Castle Rock Ridge), 205s T1 (205s Castle Rock Ridge), 205s 52M1 (205s Castle Rock Ridge) 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  
ENMAX, ALTALINK 11-Jun-22 12:00 11-Jun-22 18:00 6 Hours
Continuous
7.82L. 7.2TR. 7B138-7BT3. 7PT138-Z32, 7.82L (42s Sarcee - ENMAX 7), 7.2TR (ENMAX 7), 7B138-7BT3 (ENMAX 7) Summer Substation Washing  
EPCOR 12-Jun-22 07:00 12-Jun-22 19:00 12 Hours
Continuous
CK13, CK12, CH11) @ Cloverbar E987S and Kennedale and Hardisty, 72CK12 (987s Clover Bar - Kennedale), 72CK13 (987s Clover Bar - Kennedale), 72CH11 (987s Clover Bar - EPCOR Hardisty), 987s 72kV Bus 3 (987s Clover Bar), 987s 72kV Bus 4 (987s Clover Bar) Cloverbar 72kV BUS 3/4 CVT Doble, BUS 4 Disconnect Maintenance SDS2L/CSDS2/CDS10/CDS12/CDS16/CDS18/CGDS1/GDS1  
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  
ATCO 13-Jun-22 07:00 20-Jun-22 17:00 7.42 Days
Continuous
7L68 (730s Rycroft - 811s Clairmont Lake) SVC addition and 144 kv bus rebuild.
Install new bypass switch 7L68D3
 
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 14-Jun-22 18:00 1.42 Days
Continuous
162.1TR (162s Beddington), 162B240-RB131 (ENMAX 162), 162B240-RB134 (ENMAX 162), 162B138-RB80 (ENMAX 162), 162B138-RB86 (ENMAX 162), 162B138-RB94 (ENMAX 162) Power factor test 162PT240-Z43. Check Reversing Switch. Oil Sampling Bushing, TC, MT. Gas Monitor Taptrans Maintenance. Summer Substation Washing  
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.  
BCH 13-Jun-22 09:00 17-Jun-22 17:00 4.33 Days
Continuous
2L294 (BCH A.A. Lambert - BCH Cranbrook) replace structures & timbers AB-BC
ALTALINK 13-Jun-22 09:00 17-Jun-22 18:00 4.38 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  
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.  
ALTALINK 13-Jun-22 11:00 16-Jun-22 18:00 3.29 Days
Continuous
821L (158s - 421s) - GOI, 821L (158s Vauxhall - 421s Hays) Replace 138kV strain insulators. Maintenance on 158s821E & 158s30  
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, 650s 752 (650s Hansman Lake) 650s752 240kV Bkr Replacement. 954L (650s - 648s) will be de-energized to facilitate the energization of the new breaker.  
ALTALINK 14-Jun-22 07:30 05-Jul-22 12:00 21.19 Days
Continuous
275s T2(Tx18458) GOI, 275s T2 (275s Jenner), 275s 46 (275s Jenner), 275s 2252 (275s Jenner) Demo of old bus work and structure. Install new foundations, structure, reactors, bus work and bird cover on T2 25kV Bus.  
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  
BCH 14-Jun-22 09:00 21-Jun-22 17:00 7.33 Days
Continuous
1L275 (799s Coleman - BCH Natal) resolve structure clearance deficiencies AB-BC
EPCOR 15-Jun-22 07:00 17-Jun-22 17:00 2.42 Days
Continuous
987s CGB2 (987s Clover Bar), 987s CGB3 (987s Clover Bar) pole remediation  
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, 863L (225s Magrath - 618s Riverbend), 891L (226s Garden City - 863L tap), 226s Garden City Outage needed on 863L due to MPLS upgrades at 226s, 618s, and 225s.  
ENMAX 15-Jun-22 08:00 16-Jun-22 18:00 1.42 Days
Continuous
162.2TR (162s Beddington), 162B240-RB136 (ENMAX 162), 162B240-RB133 (ENMAX 162), 162B138-RB92 (ENMAX 162), 162B138-RB84 (ENMAX 162), 162B138-RB83 (ENMAX 162) Power factor test 162PT240-Z44. Check Reversing Switch. Oil Sampling TC, Bushing, MT. Gas Monitor Taptrans Maintenance. Summer Substation Washing. Check PRD seal.  
BCH 15-Jun-22 09:00 15-Jun-22 17:00 8 Hours
Continuous
1L274 (B1s BCH Natal - 1D1L274), 1L275 (799s Coleman - BCH Natal), Natal T1 (BCH Natal), Natal T2 (BCH Natal) NTL 1VT1 inspection/doble and T1 non-electircal PM AB-BC
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, 510s ACF13 (510s Sunnybrook), 510s 1352 (510s Sunnybrook) AC Filter Maintenance.  
BCH 16-Jun-22 09:00 16-Jun-22 17:00 8 Hours
Continuous
1L275 (799s Coleman - BCH Natal) NTL 1VT22 inspection/doble AB-BC
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 16:00 8 Hours
Continuous
24.81L. 24.83L. 24.1TR, 24.83L (74s Janet - ENMAX 24), 24.81L (ENMAX 24 - ENMAX 31), 24.1TR (ENMAX 24) 24 sub cable trench replacement. Re-install control cables and commission.  
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 (EP 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  
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, & 310P1252 - GOI, 310p T34 (310p Sundance), 310p 1152 (310p Sundance), 310p 1252 (310p Sundance) Strain insulator replacements to T34. Replace T34 metering.  
ENMAX, ALTALINK 20-Jun-22 08:00 21-Jun-22 18:00 1.42 Days
Continuous
918L (281s Johnson - ENMAX 162), 162B240-RB132 (ENMAX 162), 162B240-RB133 (ENMAX 162) Power factor test 162PT240-918  
ATCO 20-Jun-22 08:00 24-Jun-22 16:00 4.33 Days
Continuous
2075S 900SST2, 2075S 900BS1, 2075s 240kV Bus 900BS1 ( 2075s Newell), 2075s 900SST2 (2075s Newell) 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
 
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  
ATCO 20-Jun-22 10:30 23-Jun-22 16:00 3.23 Days
Continuous
9L29 (946s Oakland - 963s Coyote Lake), 946s 908 (946s Oakland), 946s 909 (946s Oakland), 946S 9L29 Protection Relay, 946S 9L29PT, 963s 901 (963s Coyote Lake), 963S 9L29 Protection Relay, 963S 9L29PT Construction work and install of new RAS relays. 89B and 52A contacts required for RAS signals  
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 )  
EPCOR, ALTALINK 21-Jun-22 07:00 24-Jun-22 17:00 3.42 Days
Continuous
921L @ Cloverbar E987S and Lamoureux 71S, 921L (71s Lamoureux - 987s Clover Bar) 921L: P&C Cutovers for Cloverbar DFR and UFLS Upgrade Projects  
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 18:00 1.42 Days
Continuous
932L (74s Janet - ENMAX 162), 162B240-RB132 (ENMAX 162), 162B240-RB136 (ENMAX 162) Power factor test 162PT240-932  
ALTALINK 22-Jun-22 08:30 22-Jun-22 16:30 8 Hours
Daily
310p2452 - GOI, 310p 2452 (310p Sundance) Grading capacitor replacement on 310p2452  
BCH 22-Jun-22 09:00 30-Jun-22 17:00 8.33 Days
Continuous
5L91 (Ashton Creek - Selkirk) flashed insulator replacements, BC maintenance does not affect the Alberta ATC AB-BC
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, 310p 652 (310p Sundance) 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, 310p 352 (310p Sundance) Grading capacitor replacement on 310p352  
ALTALINK 24-Jun-22 17:00 24-Jun-22 17:30 30 Mins
Daily
954L (650s - 648s) - DeEnergized, 954L (648s Metiskow - 650s Hansman Lake) Require 954L to be deenergized to facilitate the energization of 650s752  
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 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)  
EPCOR 27-Jun-22 07:00 30-Jun-22 17:00 3.42 Days
Continuous
C2408 and TX2 and TX4 @ Cloverbar E987S, 987s T2 (987s Clover Bar), 987s T4 (987s Clover Bar), 987s C2408 (987s Clover Bar), 987s C2405 (987s Clover Bar), 987s C2406 (987s Clover Bar) Cloverbar C2408, TX2, TX4:
Apparatus-CVT Doble and Breaker Maintenance and CDS1 Disconnect Maintenance
P&C-Cutovers for Cloverbar DFR and UFLS Upgrade Projects
 
ATCO 27-Jun-22 08:00 01-Jul-22 16:00 4.33 Days
Continuous
2029S 1218, 2029s 1218 (2029s Heathfield) Breaker has failed POW sensor. Replace Sensor and test breaker POW functionality  
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  
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 27-Jun-22 10:00 30-Jun-22 17:00 3.29 Days
Continuous
951s 919 (951s Thickwood Hills), 951S 951S SVC Station Gateway Upgrades and Changes (RTU), 951s SVC (951s Thickwood), 951S 902 (951s Thickwood Hills), 951s 903 (951s Thickwood Hills) SVC Building Crane Inspections, 2022 CVA @ 951s
Fire panel logic updates. Will need HMI/RTU update, will lose visibility for 5-10 minutes
 
ENMAX, ALTALINK 28-Jun-22 08:00 28-Jun-22 16:00 8 Hours
Continuous
21.80L, 21.80L (42s Sarcee - ENMAX 21) Power factor test Test LA's and Potheads -138-21.80  
ALTALINK 29-Jun-22 07:00 12-Jul-22 18:00 13.46 Days
Continuous
39s T1 138kVB1, 240B1, 974L, 1084L, 1135L -, 39s T1 (39s Bickerdike), 39s 152 (39s Bickerdike), 39s 38 (39s Bickerdike), 39s 26 (39s Bickerdike), 39s 29 (39s Bickerdike), 39s 240kV Bus 1 (39s Bickerdike) 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. (P2032)  
ALTALINK 29-Jun-22 08:00 29-Jun-22 17:00 9 Hours
Daily
89s952 - GOI, 89s 952 (89s Ellerslie) Wiring changes can be completed and that the breaker status checks can be done for the single pole open condition  
ATCO 29-Jun-22 08:00 29-Jun-22 17:00 9 Hours
Continuous
7L80 (733s Simonette - 857s Kakwaridge), 7L80 (740s H.R.Milner - 857s Kakwa Ridge) Install Temp jumpers to Isolate North/South portions of the line and keep Kakwa online for upcoming outage  
BCH 29-Jun-22 09:00 29-Jun-22 17:00 8 Hours
Continuous
2L113 (BCH Cranbrook - BCH Natal) NTL 60B2, 60VT2 Inspection/Doble Testing AB-BC
ALTALINK, ATCO 29-Jun-22 15:30 30-Jun-22 18:00 26.5 Hours
Continuous
7L77 (395s-A709s)- GOI, 7L77 (395s North Holden - 709s Vegreville), 395s 77E (395s North Holden) New RAS 134 scheme addition, Replace copper conductor bus drops from 7L77 to 395s78, modify CT wiring in breaker 395s77E, salvage existing 7L77 revenue meter. Trip testing required (P1718)  
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  
SUNCOR 01-Jul-22 06:00 14-Jul-22 18:00 13.5 Days
Continuous
29EDD-34 29-952-111 (29EDD-34), 29EDD-34 29-952-121 (29EDD-34), 29PP-24, 29EDD-34 29-952-141 (29EDD-34), 29PL7-1 (29EDD-34 - 29EDD-85), 29EDD-34 29PT-112 (29EDD-34) 29EDD34;29PP-24 SYSTEM;PM 5y,10y
29EDD34, 29PS68 Replace Damaged Contacts
29EDD34;29PT-112 SYSTEM;PM 5y,10y
 
BCH 01-Jul-22 08:00 01-Jul-22 20:00 12 Hours
Continuous
1L274 (48s Pocaterra - 978s BCH Britt Creek), 1L274 (978s BCH Britt Creek - BCH Greenhills Tap) BCK OSP Rev00 Step 4 AB-BC
BCH 01-Jul-22 09:00 01-Jul-22 17:00 8 Hours
Continuous
2L113 (BCH Cranbrook - BCH Natal) NTL 60D21 Disconnect Repair, 1L274 & 1L275 to be fed from AltaLink 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  
ATCO 04-Jul-22 08:00 11-Jul-22 17:00 7.38 Days
Continuous
7L80 (740s H.R.Milner - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 04-Jul-22 09:00 08-Jul-22 16:00 4.29 Days
Continuous
732s 902 (732s Mitsue) breaker maintenance  
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 04-Jul-22 10:30 07-Jul-22 17:00 3.27 Days
Continuous
856s 902T (856s Kinosis), 856s 505 (856s Kinosis), 856s 505R (856s Kinosis) 902T Maintenance  
ALTALINK 04-Jul-22 12:00 07-Jul-22 18:00 3.25 Days
Continuous
288s T1 - GOI, 288s T1 (288s Wolf Creek) PRC5 maintenance, doble, leaks  
ALTALINK 05-Jul-22 08:00 05-Jul-22 12:00 4 Hours
Daily
370s 2152 (370s North Lethbridge), 370s2152 GOI, 370s T3 (370s North Lethbridge) Trip test 2152 breaker from new C60 module. Move trips from 2152 C60 to new breaker  
ALTALINK, ENMAX 06-Jul-22 08:30 06-Jul-22 13:30 5 Hours
Daily
42s28 (28.80L) GOI, 28.80L (42s Sarcee - ENMAX 28), 42s 28 (42s Sarcee) replace front relay display on the C60 breaker protection relay  
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 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  
ATCO 11-Jul-22 09:00 14-Jul-22 17:30 3.35 Days
Continuous
856S 901, 856s 901 (856s Kinosis) 901 Breaker Maintenance  
ATCO 11-Jul-22 09:00 15-Jul-22 16:00 4.29 Days
Continuous
732s 904 (732s Mitsue) 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, 71s T1 (71s Lamoureux) Replace the 240kV and 138kV bushings on T1. Maintenance work (leak repair, bird cleanup)  
ALTALINK 11-Jul-22 13:00 11-Jul-22 15:00 2 Hours
Daily
121s23N Advice, 121s 23N (121s Brooks) Circuit cutover. 152BF, 452BF, T5 A/B, 138NB A/B protection trip test.  
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 08:00 12-Jul-22 14:00 6 Hours
Daily
121s83X Advice, 121s 83X (121s Brooks) Protection setting change. Circuit cutover. 152BF, 452BF, T5 A/B, 138NB A/B protection trip test.  
ALTALINK 12-Jul-22 08:00 13-Jul-22 16:30 1.35 Days
Continuous
167s T2 (Tx18909) GOI, 167s T2 (167s Ipiatik Lake) maintain, doble, fix fiber conduit.  
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  
ALTALINK 13-Jul-22 08:00 13-Jul-22 14:00 6 Hours
Daily
121s257X Advice, 121s 257X (121s Brooks) Protection setting change. Circuit cutover. 152BF, 452BF, T5 A/B, 138NB A/B protection trip test.  
BCH 13-Jul-22 09:00 15-Jul-22 17:00 2.33 Days
Continuous
Natal T1 (BCH Natal) NTL 60B1, T1 disconnect inspections, BC Maintenance does not affect the Alberta ATC AB-BC
ALTALINK 15-Jul-22 07:00 29-Jul-22 10:00 14.13 Days
Continuous
20sT1 (Tx 18459) GOI, 20s T1 (20s Ghost), 20s 30 (20s Ghost) replace transformer T1, upgrade protections and function test trips from 20s protections  
SUNCOR 15-Jul-22 08:00 28-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  
ALTALINK 17-Jul-22 08:15 21-Jul-22 17:45 4.4 Days
Continuous
916L (5s - 42s) GOI, 916L (5s East Calgary - 42s Sarcee), 42s 916E (42s Sarcee) Vault inspections (1~5) at 42s  
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 25-Jul-22 17:00 7.38 Days
Continuous
7L80 (740s H.R.Milner - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 18-Jul-22 08:00 30-Jul-22 17:00 12.38 Days
Continuous
813s 901T (813s Little Smoky), 813s 901 (813s Little Smoky), 813s 905 (813s Little Smoky) 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
 
ATCO 18-Jul-22 09:00 22-Jul-22 16:00 4.29 Days
Continuous
809s 904 (809s Louise Creek) breaker maintenance  
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  
ATCO 20-Jul-22 09:00 21-Jul-22 17:00 1.33 Days
Continuous
825s 904 (825s Whitefish Lake) Fill and repair 904 Dashpots  
ALTALINK 23-Jul-22 08:00 28-Jul-22 17:00 5.38 Days
Continuous
63s T2 (Tx 18898) - GOI, 63s 25 (63s Red Deer), 63s T2 (63s Red Deer) PRC 5 maintenance, fix leaks, test  
ALTALINK, ENMAX 24-Jul-22 08:15 28-Jul-22 17:45 4.4 Days
Continuous
693L (42s - 10s) GOI, 693L (42s Sarcee - ENMAX 10) Vault inspections (1~5) at 42s  
ALTALINK 25-Jul-22 07:00 28-Jul-22 18:00 3.46 Days
Continuous
20s 138kV BUS South GOI, 20s T1 (20s Ghost), 113L (20s Ghost - 33s Spray), 869L (163s Amoco Empress - 204s Sandy Point), 150L (20s Ghost - 150AL Tap) 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 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  
EPCOR, ALTALINK 25-Jul-22 09:30 27-Jul-22 17:00 2.31 Days
Continuous
947L Zone @ Cloverbar E987S and Ellerslie 89S, 947L (89s Ellerslie - 987s Clover Bar), 987s C2402 (987s Clover Bar), 987s C2404 (987s Clover Bar) Cloverbar: P&C Cutovers for DFR/UFLS Upgrades  
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, 251s 1352 (251s Whitla), 251s SR1 (251s Whitla) maintenance, doble  
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  
ALTALINK 27-Jul-22 09:00 28-Jul-22 17:30 1.35 Days
Continuous
251sR2 (TX18860) GOI, 251s 1452 (251s Whitla), 251s SR2 (251s Whitla) maintenance, doble  
ALTALINK 27-Jul-22 11:00 27-Jul-22 15:00 4 Hours
Daily
250p 11 (250p Bighorn Plant) maintenance  
EPCOR, ALTALINK 28-Jul-22 07:00 30-Jul-22 17:00 2.42 Days
Continuous
915L @ Cloverbar E987S and East Edmonton 38S, 915L (38s East Edmonton - 987s Clover Bar) Cloverbar: P&C Cutovers for DFR/UFLS Upgrades  
ALTALINK 28-Jul-22 08:00 28-Jul-22 16:00 8 Hours
Daily
20s 138kV BUS & Station GOI, 113L (20s Ghost - 33s Spray), 150L (20s Ghost - 150AL Tap), 859L (20s Ghost - AML 793s Horse Creek), 418L (20s Ghost - 189L Tap), 56L (20s Ghost - 245s Seebe), 20s T1 (20s Ghost) Complete Cutover of MOD 20s14 and functional testing  
SUNCOR 28-Jul-22 08:00 28-Jul-22 18:00 10 Hours
Continuous
952-9702 27-DC-M Relay @ 29EDD-94, 29EDD-94 29-952-9702 (29EDD-94 Voyageur) This 260kV breaker is required to be open during the  relay replacement.  No isolation is required.  This relay is for the breaker charging circuit only.  
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  
ATCO 30-Jul-22 17:00 14-Aug-22 17:00 15 Days
Continuous
813s 901T (813s Little Smoky) 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
 
BCH 01-Aug-22 09:00 04-Aug-22 16:00 3.29 Days
Continuous
2L112 (BPA Boundary - BCH Nelway) REPLACE POLES ON STRUCTURE 1/8 BC Maintenance does not affect the Alberta ATC AB-BC
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 08-Aug-22 17:00 6.38 Days
Continuous
7L80 (740s H.R.Milner - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
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
 
ALTALINK 02-Aug-22 10:30 04-Aug-22 17:30 2.29 Days
Continuous
275s2 GOI, 275s 2 (275s Jenner) 240kV breaker maintenance  
SUNCOR 03-Aug-22 06:00 12-Aug-22 18:00 9.5 Days
Continuous
29PL9-13 (29EDD-34 - 29EDD-65), 29EDD-65 29-952-4821 (29EDD-65), 29EDD-65 29-952-4822 (29EDD-65), 29EDD-34 29-952-112 (29EDD-34), 29EDD-34 29-952-113 (29EDD-34) 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  
BCH 05-Aug-22 09:00 12-Aug-22 17:00 7.33 Days
Continuous
5L92 (Cranbrook - Selkirk) Replace Defective Insulators AB-BC
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, 29EDD-1 29EDD1s252 (29EDD-1 Millennium), 29EDD-1 29EDD1s352 (29EDD-1 Millennium), 29PL9-4 (29EDD-1 Millennium - 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  
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, 562s T2 (562s Cypress), 562s 138kV Bus 2 (562s Cypress), 562s 240kV Bus 2 (562s Cypress) 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 10:00 11-Aug-22 17:30 3.31 Days
Continuous
312s TX18795 & 138 kV Bus GOI, 312s T1 (312s Fidler), 312s 138kV Bus 1 (312s Fidler) 1st Scope) T1 Maintenance, Doble, 312s40 PT needs oil. Damper wire fastening. PRC5 work 2nd Scope) VT22 Oil top up & leak repair  
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, 310p 2752 (310p Sundance) 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  
ALTALINK 09-Aug-22 07:30 10-Aug-22 16:30 1.38 Days
Continuous
893L (312s-112s-893L3J) GOI, 893L (312s Fidler - 893AL tap) Maintenance on 893L 72J/73J/74J  
ALTALINK 09-Aug-22 07:30 10-Aug-22 17:30 1.42 Days
Continuous
624L (312s-354s) GOI, 624L (312s Fidler - 354s Summerview) required for Maintenance on 893L 72J/73J/74J  
EPCOR 15-Aug-22 07:00 19-Aug-22 17:00 4.42 Days
Continuous
TX3 @ Cloverbar E987S, 987s T3 (987s Clover Bar) Cloverbar TX3: P&C Cutovers for Cloverbar DFR and UFLS Upgrade Projects  
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  
ENMAX, ALTALINK 15-Aug-22 08:00 15-Aug-22 12:00 4 Hours
Continuous
693L. 10.2TR. 10PT138-Z31, 693L (42s Sarcee - ENMAX 10) Summer Substation Washing  
ATCO 15-Aug-22 08:00 22-Aug-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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.  
ATCO 15-Aug-22 09:30 17-Aug-22 17:30 2.33 Days
Continuous
849s 905 (849s Joslyn Creek) 905 Breaker Maintenance  
ATCO 15-Aug-22 10:00 22-Aug-22 16:00 7.25 Days
Continuous
7L04 (ATC 793s West Peace River - 839s Daishowa) Pole Replacement/Mitigation  
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 15-Aug-22 12:00 15-Aug-22 18:00 6 Hours
Continuous
832L. 10.1TR. 10PT138-Z31, 832L (ENMAX 10 - ENMAX 12) Summer Substation Washing  
BCH 16-Aug-22 09:00 26-Aug-22 17:00 10.33 Days
Continuous
Natal T3 (BCH Natal) Disconnect Inspections and Inspections/Doble Testing AB-BC
BCH 16-Aug-22 09:00 02-Sep-22 17:00 17.33 Days
Continuous
2L293 (BCH Nelway - BCH Selkirk) Replace structures and Timbers, BC maintenance does not affect the Alberta ATC AB-BC
ENMAX, ALTALINK 17-Aug-22 08:00 17-Aug-22 10:00 2 Hours
Continuous
5sT1, 5s T1 (5s East Calgary) 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  
ENMAX, ALTALINK 17-Aug-22 10:00 17-Aug-22 12:00 2 Hours
Continuous
5sT2, 5s T2 (5s East Calgary) Summer Substation Washing  
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  
ALTALINK 20-Aug-22 08:15 20-Aug-22 14:45 6.5 Hours
Daily
955L (59s - 103s) GOI, 955L (59s Peigan - 103s Goose Lake) Maintenace; Str 91  
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
 
EPCOR 22-Aug-22 07:00 26-Aug-22 17:00 4.42 Days
Continuous
TX4 @ Cloverbar E987S, 987s T4 (987s Clover Bar) Cloverbar TX4: P&C Cutovers for Cloverbar DFR, UFLS, RTU Upgrade Projects  
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, 244s 138kV 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 - EP 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 Little Smoky), 813s 904 (813s Little Smoky), 813s 908 (813s Little Smoky) 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
 
ALTALINK 29-Aug-22 07:00 30-Aug-22 17:00 1.42 Days
Continuous
275s 240kV BUS 2 & T2(Tx18458) GOI, 275s 8 (275s Jenner), 275s 1952 (275s Jenner), 275s T2 (275s Jenner), 275s 240kV Bus 2 (275s Jenner) Close Open Point "A", Install 949L slack span from transmission structure to A-frame, install wire bus drops to switch. Install bus pipe to close Open point "B" on 240kV Bus 2. This will energize the new Joss 240kV Bay.  
ALTALINK 29-Aug-22 07:00 30-Aug-22 17:00 1.42 Days
Continuous
850L(678s - 525s) GOI, 850L (525s Carseland - 678s Okotoks), 525s 850N (525s Carseland), 678s 850 (678s Okotoks) Strain Glass replacement on 850L, CT cable replacement on 525s850N  
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.  
ATCO 29-Aug-22 08:00 04-Sep-22 17:00 6.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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), 244s 138kV 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 29-Aug-22 10:00 05-Sep-22 16:00 7.25 Days
Continuous
7L04 (ATC 793s West Peace River - 839s Daishowa) Pole Replacement/Mitigation  
ALTALINK 30-Aug-22 08:30 30-Aug-22 16:30 8 Hours
Continuous
368s879 (879L) - GOI, 368s 879 (368s Burdett), 879L (368s Burdett - 879L Tap) Install new RAS relay at 368s Burdett, outage required to cut in CT circuit for new relay.  
BCH 30-Aug-22 09:00 01-Sep-22 17:00 2.33 Days
Continuous
1L274 (B1s BCH Natal - 1D1L274), 1L275 (799s Coleman - BCH Natal), T2 (BCH Cranbrook), T6 (BCH Cranbrook) disconnect inspection, and hotspot repair AB-BC
ALTALINK 31-Aug-22 08:00 01-Sep-22 17:00 1.38 Days
Continuous
851L(253s - 525s) GOI, 851L (253s Blackie - 525s Carseland) Strain Glass replacement on 851L, CT cable replacement on 525s851X  
ENMAX, ALTALINK 03-Sep-22 08:00 03-Sep-22 18:00 10 Hours
Continuous
21.80L. 20.82L. 60S100. 21.1TR. 21.4TR, 21.80L (42s Sarcee - ENMAX 21), 20.82L (ENMAX 20 - ENMAX 21), 21.1TR (ENMAX 21), 21.4TR (ENMAX 21) Fall Substation Washing  
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  
ALTALINK, TRANSCANADA 04-Sep-22 07:00 06-Sep-22 17:00 2.42 Days
Continuous
525s 138kV BUS 2 & 13.8kV BUS GOI, 782L (269s Wyndham - 525s Carseland), 851L (253s Blackie - 525s Carseland), 525s 851X (525s Carseland), 525s 48 (525s Carseland) Expanded GOI on T1 scope to include 525s48 breaker maintenance (AltaLink), T1 protection trips and close blocks to 552 breaker, 525s7 commissioning  
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 - BCH Natal) BC Hydro has advised of tentative plan for 1L275/786L outage. AB-BC
ALTALINK 07-Sep-22 07:30 07-Sep-22 17:30 10 Hours
Daily
786L (799s-NTL) OOS, 786L (799s Coleman - BCH Natal) Open 786L breakers for testing of RAS equipment at 799s-103s. 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
 
ENMAX, ALTALINK 07-Sep-22 08:00 07-Sep-22 18:00 10 Hours
Continuous
50L. 21.2TR. 44s75 PT@ Bearspaw. 21 CAP. 21PT138-Z31, 50L (44s Bearspaw Plant - ENMAX 21), 21.2TR (ENMAX 21), 21.1C (ENMAX 21) Fall Substation Washing  
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  
ENMAX, ALTALINK 08-Sep-22 08:00 08-Sep-22 18:00 10 Hours
Continuous
7.84L. 36.81L. 36.1TR. 36.3TR. 36PT138-Z31. 7PT138-7.84, 36.81L (44s Bearspaw - ENMAX 36), 7.84L (ENMAX 7 - ENMAX 36), 36.1TR (ENMAX 36), 36.3TR (ENMAX 36), 7B138-7.84 (ENMAX 7), 44s 36.81E (44s Bearspaw Plant), 36B138-36BT3 (ENMAX 36) Fall Substation Washing  
ATCO 09-Sep-22 08:00 09-Sep-22 17:00 9 Hours
Continuous
7L07, 7L07 (790s Poplar Hill - 815s Goodfare) 731S Elmworth Project  
ENMAX, ALTALINK 10-Sep-22 08:00 11-Sep-22 16:00 1.33 Days
Continuous
936L, 936L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ENMAX, ALTALINK 10-Sep-22 08:00 11-Sep-22 16:00 1.33 Days
Continuous
937L, 937L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
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
 
ATCO 12-Sep-22 08:00 19-Sep-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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 11:00 23-Sep-22 07:00 10.83 Days
Continuous
658L (562s - 649s) - GOI, 658L (562s Cypress - 649s Chappice Lake), 562s 1452 (562s Cypress), 562s 1652 (562s Cypress) Replace 658L ‘A’ and ‘B’ Line protections and implement SCADA config changes at 562s Cypress and 649s Chappice Lake. Install 138kv MOD and CT’s at 649s. Trip test and commissioning 3 terminal line protections between 662s, 649s and 562s.  
ALTALINK 12-Sep-22 11:30 13-Sep-22 17:00 29.5 Hours
Continuous
256s 138kV Bus (719L & T1) - GOI, 256s T1 (256s Harmattan), 256s C1 (256s Harmattan), 719L (256s Harmattan - 719CL tap) Repairing leaks on the transformer radiator  
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  
ALTALINK 13-Sep-22 17:00 23-Sep-22 17:30 10.02 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  
ENMAX, ALTALINK 14-Sep-22 08:00 14-Sep-22 12:00 4 Hours
Continuous
28.80L. 28.2TR. 28PT138-Z31, 28.80L (42s Sarcee - ENMAX 28), 28.2TR (ENMAX 28), 28B138-28.80 (ENMAX 28) Fall Substation Washing  
ENMAX, ALTALINK 15-Sep-22 12:00 15-Sep-22 18:00 6 Hours
Continuous
23.80L. 23.4TR, 23.80L (74s Janet - ENMAX 23), 23.4TR (ENMAX 23), 23B138-23.80 (ENMAX 23) Fall Substation Washing  
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
 
ENMAX, ALTALINK 17-Sep-22 08:00 18-Sep-22 16:00 1.33 Days
Continuous
936L, 936L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ENMAX, ALTALINK 17-Sep-22 08:00 18-Sep-22 16:00 1.33 Days
Continuous
937L, 937L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
EPCOR 19-Sep-22 07:00 23-Sep-22 17:00 4.42 Days
Continuous
987s 72kV Bus 3 (987s Clover Bar), 72CK12 (987s Clover Bar - Kennedale) CDS9/CDS14/CDS17CGDS2/GDS2 Disconnect Maintenance

P&C Crew: CK12 Line Prot. Maintenance and Op Checks
 
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 (EP 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
 
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, ATCO 20-Sep-22 06:00 29-Sep-22 18:00 9.5 Days
Continuous
SK2 PL2-2, 836s 622T (836s Steep Bank) 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.  
ATCO 24-Sep-22 08:00 24-Sep-22 17:00 9 Hours
Continuous
939S 900BS2, 939S 900BS3, 9L10 (876s Brintnell - 939s Livock), 939s 903T (939s Livock), 939s 910 (939s Livock), 939s 911 (939s Livock), 939s 912 (939s Livock) Livock Pile Heaving Project -
Connect bypass to 900BS3 and 900BS2
Create open jumper J1 between 900BS3 and 900D1
Update relay settings too
 
ATCO 24-Sep-22 16:00 23-Nov-22 17:00 60.08 Days
Continuous
939s 901T (939s Livock), 939S 900BS1, 939S 700BS1, 939s 701 (939s Livock), 7L125 (939s Livock - 950s Germain), 939s 901 (939s Livock), 939s 904 (939s Livock) Livock Pile Heaving Project - Outage on 901T, 900BS1, and 700BS1  
ALTALINK 25-Sep-22 11:30 28-Sep-22 08:30 2.88 Days
Continuous
121s 138kV South Bus & T2(Tx18408) GOI, 121s T2 (121s Brooks), 121s 827W (121s Brooks), 121s 795X (121s Brooks), 827L (28s West Brooks - 121s Brooks), 795L (121s Brooks - 421s Hays) T2 138 kV bushings replacement  
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  
ATCO 26-Sep-22 08:00 03-Oct-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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  
EPCOR 03-Oct-22 07:00 08-Oct-22 17:00 5.42 Days
Continuous
330p 1207 (330p Genesee), 330p 1208 (330p Genesee) Genesee 1207 bay CVT doble, TX arrestor doble, 1207B/1208A/12GT3D maintenance  
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 - EP Riverview) Petrolia PDS6 and PDS7 and 1164L CVT LCR's and PDS12 Disconnect Maintenance  
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 09:00 07-Oct-22 18:00 3.38 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  
ATCO 10-Oct-22 08:00 17-Oct-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
ALTALINK, Lethbridge 12-Oct-22 07:30 12-Oct-22 17:30 10 Hours
Continuous
725L (15s-240s-L674s) - GOI, 725L (15s Fort MacLeod - 725BL tap), 725L (674s Lethbridge Bowron - 725BL tap), 725BL (240s McBride Lake - 725L tap), 674s 725W (674s Bowron) 725L fire mitigation on str 725L229.  
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  
ALTALINK 14-Oct-22 07:00 17-Oct-22 18:00 3.46 Days
Continuous
820L (254s - I-315s - 67s) - GOI, 820L (254s Coaldale - 820AL tap), 820L (67s Stirling - 820AL tap), 820AL (315s Chin Chute - 820L tap) Installing inline switches and T-tap structures for completion of newly built 820BL (Structures #451 & 452)  
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..  
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 17-Oct-22 10:00 19-Oct-22 17:30 2.31 Days
Continuous
807s 901 (807s Sheerness), 807s 901T (807s Sheerness) 807S Sheerness 901 BREAKER MIN OIL HLR COMPLETE TESTING  
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 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
 
ALTALINK 24-Oct-22 08:00 27-Oct-22 17:30 3.4 Days
Continuous
370s 240kV BUS 1 & T3(Tx 18307) GOI, 370s 852 (370s North Lethbridge), 370s 1252 (370s North Lethbridge), 370s T3 (370s North Lethbridge), 370s 240kV Bus 1 (370s North Lethbridge) Replacement of the 370s25 post insulators adjustment of switch  
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
 
ATCO 24-Oct-22 08:00 31-Oct-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
ALTALINK 24-Oct-22 09:00 27-Oct-22 18:00 3.38 Days
Continuous
44s 138kV Bus (T1, T2 & 860L), 44s T1 (44s Bearspaw Plant), 44s T2 (44s Bearspaw Plant), 44s 860W (44s Bearspaw Plant), 860L (44s Bearspaw Plant - 291s Cochrane), 291s 860 (291s Cochrane) 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  
ALTALINK, ENMAX 31-Oct-22 09:00 04-Nov-22 18:00 4.38 Days
Continuous
44s 138kV Bus (50L & 36.81L) - GOI, 50L (44s Bearspaw Plant - ENMAX 21), 36.81L (44s Bearspaw - ENMAX 36), 44s 50X (44s Bearspaw Plant), 44s 36.81E (44s Bearspaw Plant) 44s38 switch replace, 36.18L PT addition, 36.18L strain insulator replace, 36.18L VSR salvage  
ATCO 07-Nov-22 08:00 13-Nov-22 17:00 6.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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  
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
 
ATCO 21-Nov-22 08:00 28-Nov-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
ATCO 23-Nov-22 08:00 23-Nov-22 17:00 9 Hours
Continuous
939S 900BS2, 939S 900BS3, 9L10 (876s Brintnell - 939s Livock), 939s 903T (939s Livock), 939s 910 (939s Livock), 939s 911 (939s Livock), 939s 912 (939s Livock) Livock Pile Heaving Project
Close jumper and Disconnect Bypass
 
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 05-Dec-22 08:00 12-Dec-22 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 740s H.R.Milner) Line mitigation, Cross arm replacement  
ATCO 09-Jan-23 08:00 16-Jan-23 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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 23-Jan-23 08:00 30-Jan-23 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
ATCO 30-Jan-23 08:00 08-Feb-23 17:00 9.38 Days
Continuous
75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing 75-PLH-901 from Horizon substation 75
Connect new bus Horizon substation 75 (former 75-PLH-901 bay) to new 838S-900BS2
Reroute and connect 9L155 (former 75-PLH-901) to new 838S and energize
Commission 87L/900BS1 protection, end-to-end testing
Upgrade 21B/9L155 line protection @ 849S Joslyn
Commission line protection, SCADA and end-to-end testing, BF/DTT to 838S
 
ATCO 06-Feb-23 08:00 13-Feb-23 17:00 7.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
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
 
CNRL 13-Feb-23 08:00 22-Feb-23 17:00 9.38 Days
Continuous
75-PLH-902 (838s Horizon Mining - 849s Joslyn) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing 75-PLH-902 from Horizon substation 75
Connect new bus Horizon substation 75 (former 75-PLH-902 bay)to new 838S-900BS1
Reroute and connect 9L137 (former 75-PLH-902) to new 838S and energize
Commission 87L/900BS1 protection, end-to-end testing
Upgrade 21B/9L137 line protection @ 849S Joslyn
Commission line protection, SCADA and end-to-end testing, BF/DTT to 838S
 
ATCO 21-Feb-23 08:00 27-Feb-23 17:00 6.38 Days
Continuous
7L80 (733s Simonette - 857s Kakwaridge) Line mitigation, Cross arm replacement  
ATCO 27-Feb-23 08:00 03-Mar-23 17:00 4.38 Days
Continuous
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 06-Mar-23 08:00 06-Mar-23 17:00 9 Hours
Continuous
7L80 (733s Simonette - 740s H.R.Milner) Remove Temp jumpers to Isolate North/South portions of the line  
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
 
CNRL 17-Mar-23 08:00 22-Mar-23 17:00 5.38 Days
Continuous
75-PLH-902 (838s Horizon Mining - 849s Joslyn) ATCO 9L32-9L66 CNRL- Horizon Project
Protection Work
 
ATCO 23-Mar-23 08:00 28-Mar-23 17:00 5.38 Days
Continuous
75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
Protection Work
 
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, 29EDD-1 260kV North Bus 2 (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 19-Jun-23 08:00 10-Jul-23 17:00 21.38 Days
Continuous
7L587, 7L587 (822s Wolf Lake - 826s Marguerite Lake) 822S Wolf lake P&C and SCADA Upgrade
Work on Breaker 822S 701
Cut over cabling and protection to new panel
Commission new protection including teleprotection DTT to 826S
 
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 17-Jul-23 08:00 07-Aug-23 17:00 21.38 Days
Continuous
7L574, 7L574 (822s Wolf Lake - 7L574 tap) 822S Wolf lake P&C and SCADA Upgrade
Work on Breaker 822S 702
Cut over cabling and protection to new panel
Line crew prep 7L86/7L574 bypass and connect to 7L574
Commission new protection including teleprotection DTT from 970S Bourque to 822S, install temp relay settings for 7L574/7L86 bypass
 
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  
ATCO 07-Aug-23 13:00 07-Aug-23 17:00 4 Hours
Continuous
7L86, 7L86 (822s Wolf Lake - 877s Foster Creek) 822S Wolf lake P&C and SCADA Upgrade
Line crew connect bypass to 7L86
1200S Foster Creek Sub OOS
 
ATCO 14-Aug-23 08:00 04-Sep-23 17:00 21.38 Days
Continuous
822s 703 (822s Wolf Lake), 7L86 (822s Wolf Lake - 877s Foster Creek) 822S Wolf lake P&C and SCADA Upgrade
Work on Breaker 822S 703
Cut over cabling and protection to new panel.
Commission new protection including teleprotection DTT.
7L86/7L574 bypass will be in service
 
ATCO 04-Sep-23 13:00 04-Sep-23 17:00 4 Hours
Continuous
7L86, 7L574, 7L574 (822s Wolf Lake - 7L574 tap) 822S Wolf lake P&C and SCADA Upgrade
Line crew to disconnect 7L574/7L86 bypass
1200S Foster Creek Sub OOS
 
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: 2022-05-25   2:29:24 PM


This document and the information contained herein are based upon information and data which by their nature contain a degree of uncertainty and are subject to change. In addition, this document may contain information and data from public sources and/or third parties, which have been assumed to be accurate and complete and have not been verified. Accordingly, the Independent System Operator, operating as the Alberta Electric System Operator (the "AESO") makes no warranty, representation or guarantee, express or implied, with respect to this document or the information contained herein, including, but not limited to, any warranty, representation or guarantee of accuracy, completeness, timeliness, reliability, availability, absence of computer virus, non- infringement, merchantability or suitability for any purpose. Under no circumstances will the AESO, its members, officers, employees, contractors or agents, or any of their respective affiliates, be liable for any errors or omissions in, or any losses, damages or claims whatsoever, whether in contract, tort or otherwise, arising from use of or reliance upon, this document or any information contained herein.

© 2009 Alberta Electric System Operator. All rights reserved