Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2022-10-08

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
ENMAX, ALTALINK 29-Sep-22 17:00 11-Oct-22 17:00 12 Days
Continuous		 37.82L (74s Janet - SS-37), 74s 37.82W (74s Janet), 74s 45 (74s Janet) replacing breaker 74s37.82  
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  
BCH 07-Oct-22 18:00 20-Oct-22 17:00 12.96 Days
Continuous		 1L275 (799s Coleman - BCH Natal) replace 1-1, 1-2, 1-3, 4-4 and 4-5 with taller structures to resolve clearance violations for FAC-008 AB-BC
ENMAX, ALTALINK 08-Oct-22 08:00 08-Oct-22 13:00 5 Hours
Continuous		 21MD138-21.4TR (SS-21), 21MD138-21.1TR (SS-21), 21.80L (42s Sarcee - SS-21). 20.82L (SS-20 - SS-21). 60S100. 21.1TR (SS-21). 21.4TR (SS-21), 21.80L (42s Sarcee - SS-21), 21B138-20.82 (SS-21), 20.82L (SS-20 - SS-21), 21.1TR (SS-21), 21.4TR (SS-21) Fall Substation Washing. Check Reversing Switch 21.1. Altalink required to remove 60S100 sec. fuses  
Syncrude 09-Oct-22 08:00 19-Oct-22 20:00 10.5 Days
Continuous		 Non-Significant Outage: T5 isolatin in Plant 31 to perform maintenance and repairs. The following breakers will be operated: 5235 @ Plant 31 Substation 535 @ Plant 31 Substation The following disconnect switches will be operated: 534 @ Plant 31 Substation, 5235 (Syncrude Mildred Lake), 534 (Syncrude Mildred Lake), 535 (Syncrude Mildred Lake), Mildred T5 (Syncrude Mildred Lake) Non-Significant Outage: T5 isolatin in Plant 31 to perform maintenance and repairs.

The following breakers will be operated:
5235 @ Plant 31 Substation
535 @ Plant 31 Substation

The following disconnect switches will be operated:
534 @ Plant 31 Substation

The following transformers will be isolated:
T5 @ Plant 31 Substation		  
Saskpower 10-Oct-22 08:00 14-Oct-22 19:00 4.46 Days
Continuous		 SASK POWER P2C maintenance AB-SK
SUNCOR 10-Oct-22 08:00 16-Oct-22 18:00 6.42 Days
Continuous		 29EDD-2 29PT-3 (29EDD-2 Tar Island), 29PT-3 / 29PL6-22, 29PL6-22 (29EDD-1 Millennium - 29EDD-2 Tar Island) 29PT-3 HV Bushing Testing / Replacement at 29EDD-2
29PZ-1 ATS Repair or Replace at 29EDD-2
29PL6-22 protection relays- L90 and SEL 411L @ 29 EDD-1 (A and B protection relays one at a time)		  
ATCO 10-Oct-22 08:00 17-Oct-22 17:00 7.38 Days
Continuous		 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 10-Oct-22 11:30 13-Oct-22 14:30 3.13 Days
Continuous		 7L224, 7L224 (650s Hansman Lake - 774s Monitor) GOI Required to continue cross arm replacement project on 7L224.  
ALTALINK 11-Oct-22 07:00 12-Oct-22 18:00 1.46 Days
Daily		 922L (310p-17s) - GOI, 922L (17s Benalto - 310p Sundance) Line strain insulator replacement @ 310P. Repair 310p20B.  
ATCO 11-Oct-22 07:00 14-Oct-22 17:00 3.42 Days
Continuous		 7L224, 774S 701, 7L224 (650s Hansman Lake - 774s Monitor) RAS modifications for the Pattern Lanfine WAGF project (P1898)  
ALTALINK 11-Oct-22 08:00 12-Oct-22 16:30 1.35 Days
Continuous		 649s Portion of 138kV Bus (658L) - GOI, 658L (562s Cypress - 649s Chappice Lake) Disconnecting 472s & MR1 from 649s 138kV Bus  
ALTALINK 11-Oct-22 08:00 12-Oct-22 18:00 1.42 Days
Continuous		 12s T1-C Tx18823 – GOI, 12s T1 (12s Heartland) Repair major oil leaks on the transformer.  
BCH 11-Oct-22 09:00 27-Oct-22 17:00 16.33 Days
Continuous		 2L293 (BCH Nelway - BCH Selkirk) replace structures and timbers and PT replacement BC maintenance does not affect the Alberta ATC AB-BC
ALTALINK 11-Oct-22 12:00 13-Oct-22 18:00 2.25 Days
Continuous		 310p T36 - GOI, 310p T36 (310p Sundance) 310P T36 bushing replacement  
ALTALINK 12-Oct-22 07:30 12-Oct-22 12:30 5 Hours
Daily		 698s452 - GOI, 698s 452 (698s Jackfish) Investigate trip coil 1 fail  
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 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 (15s Fort MacLeod - 725BL tap), 725L (674s Bowron - 725BL tap), 725LW (674s) 725LW Maintenace  
Lethbridge, ALTALINK 12-Oct-22 07:30 13-Oct-22 16:00 1.35 Days
Continuous		 725LE (674s-111s-618s), 725L (674s Bowron - 725AL tap), 725L (111s Coalbanks - 725AL tap), 725AL (618s Riverbend - 725L tap) 725LE Maintenace  
CNRL 12-Oct-22 07:30 20-Oct-22 18:00 8.44 Days
Continuous		 75-PLH-904 (838s Horizon Mining - 842s Horizon Upgrading) 260 kV 311L Relay Upgrade  
ATCO, ALBIAN 12-Oct-22 08:00 12-Oct-22 18:00 10 Hours
Continuous		 920s 901 (920s Jackpine), 920s 901T (920s Jackpine) 2022 Fall shutdown  
ALTALINK, STROBE 12-Oct-22 09:30 12-Oct-22 17:00 7.5 Hours
Daily		 240s (725BL54) TAU - Advice, 725BL (240s McBride Lake - 725L tap), 300L (240s McBride Lake - 725BL tap) maintenance  
ALTALINK 12-Oct-22 11:00 12-Oct-22 15:00 4 Hours
Daily		 250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 12-Oct-22 12:30 12-Oct-22 17:30 5 Hours
Daily		 698s552 - GOI, 698s 552 (698s Jackfish) Investigate breaker trouble/fail alarm  
SUNCOR 13-Oct-22 06:00 20-Oct-22 18:00 7.5 Days
Continuous		 29PL9-4 (29EDD-1 Millennium - 29EDD-3), 29EDD-1 29EDD1s352 (29EDD-1 Millennium), 29EDD-1 29EDD1s252 (29EDD-1 Millennium), 29EDD-1 29EDD1SPL9-4 (29EDD-1 Millennium) Transformer Line protection upgrade
29PT-5 Replace PRD in GTG-5 Outage
(CBR parallel ASCR scope)		  
EPCOR, ALTALINK 13-Oct-22 07:00 18-Oct-22 17:00 5.42 Days
Continuous		 D2403 and 909LW @ Dome E665S and Sundance310P, 909L (310p Sundance - 665s Dome), 665s D2403 (665s Dome) Dome D2403 Bay Doble and Breaker Maintenance, 909LW CT/Arrestor Doble  
ALTALINK 13-Oct-22 07:15 14-Oct-22 17:45 1.44 Days
Continuous		 610L (83s - 336s) GOI, 610L (83s Taber - 336s Fincastle) Outage to disconnect and remove smart wires power flow controller at 336s (AESO Smart Wire Project)  
ATCO 13-Oct-22 08:00 17-Oct-22 16:00 4.33 Days
Continuous		 7L44 (749s Flyingshot Lake - 845s Big Mountain) Pole Changes  
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 14-Oct-22 18:00 11 Hours
Daily		 63s 138kV South Bus GOI, 63s 138kV South Bus (63s Red Deer), 63s T2 (63s Red Deer) Complete salvage and demo work to remove 63s22, 63s80x, and 63s16. Removing / Disconnecting 63s22 creates open point releasing 63s80x and 63s16 for salvage.  
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)  
ALTALINK 17-Oct-22 06:15 22-Oct-22 17:45 5.48 Days
Continuous		 607L (135s - 607L108) GOI, 607L (135s Conrad - 607AL tap), 135s T1 (135s Conrad), 135s T2 (135s Conrad) Transmission Line Maintenance (Str 182 ~ 223)  
ALTALINK, ENMAX 17-Oct-22 07:00 18-Oct-22 17:00 1.42 Days
Continuous		 74s23.80 (138kV South Bus, 23.80L, 24.83, 74s 138kV South Bus (74s Janet), 24.83L (74s Janet - SS-24), 23.80L (74s Janet - SS-23) Replacing Breaker 74s23.80  
ALTALINK 17-Oct-22 07:30 21-Oct-22 16:30 4.38 Days
Continuous		 511s SVC Plus GOI, AML 511s SVC Plus (AML 511s Crossings) SVC Plus VCS maintenance, fence repair on Reactors and IGBT Inspection..  
ENMAX, ALTALINK 17-Oct-22 08:00 19-Oct-22 18:00 2.42 Days
Continuous		 771L (SS-47 - SS-162). 162sub 138KV Bus. SS-47, 771L (SS-47 - SS-162), 162B138-RB81 (SS-162), 162B138-RB82 (SS-162), 162MD138-771L (SS-162) 162 Sub 138kV DFR Installation  
ALTALINK 17-Oct-22 09:00 27-Oct-22 18:00 10.38 Days
Continuous		 1034L (244s - 324s) - GOI, 1034L (244s Bowmanton - 324s Cassils) Damper replacement between Structures #32-243 & 368-389  
ALTALINK 17-Oct-22 10:30 20-Oct-22 17:30 3.29 Days
Continuous		 74s T1(TX18570) GOI, 74s T1 (74s Janet), 74s 16 (74s Janet) Transformer maintenance, doble, leak repairs  
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 06:30 20-Oct-22 18:00 2.48 Days
Continuous		 72s T1 Tx18404 GOI, 72s T1 (72s Leismer) 25kV bushing replacement, 72sT1 doble, 72sT1 maint, 72sT1 SFRA&LR and 72sT1 manhole leak  
ALTALINK 18-Oct-22 08:00 18-Oct-22 16:30 8.5 Hours
Daily		 324s1152 GOI, 324s 1152 (324s Cassils) Gas gauge reading incorrectly and needs repair  
ATCO 18-Oct-22 08:00 19-Oct-22 17:00 1.38 Days
Daily		 7L32, 7L32 (811s Clairmont Lake - 862s South Bezanson) 862S S. Bezanson Substation Rebuild Project, Disconnect and remove 7L32PT3, tap up mobile 902s  
ALTALINK, ENMAX 18-Oct-22 17:00 27-Oct-22 17:00 9 Days
Continuous		 74s23.80 (23.80L) - GOI, 23.80L (74s Janet - SS-23) Replacing Breaker 74s23.80  
ALTALINK 19-Oct-22 08:00 19-Oct-22 16:30 8.5 Hours
Daily		 349s10 GOI, 349s 10 (349s Stavely) Install single phase PT with wildlife cover up, add a new junction box and PT distribution module. Install new line protection relay  
ALTALINK 19-Oct-22 08:00 19-Oct-22 17:00 9 Hours
Daily		 786L (799s-NTL) OOS, 786L (799s Coleman - BCH Natal) Open 786L breakers for testing of RAS equipment at 799s-103s. Work is coordinated with BC Hydro 786/1L275 outage. AB-BC
ATCO 19-Oct-22 08:00 22-Oct-22 17:00 3.38 Days
Continuous		 939S 900BS2, 939S 900BS3, 9L10, 939S 903T, 9L10 (876s Brintnell - 939s Livock), 939s 903T (939s Livock), 939s 240kV Bus 900BS2 (939s Livock), 939s 240kV Bus 900BS3 (939s Livock) Livock Pile Heaving Project -
Connect bypass to 900BS3 and 900BS2
Create open jumper J1 between 900BS3 and 900D1
Update relay settings too		  
ALTALINK 19-Oct-22 10:00 19-Oct-22 16:00 6 Hours
Daily		 65s753E GOI, 753L (65s High River - 253s Blackie) Install, wire and commission a maintenance switch for breaker 852  
ALTALINK, ATCO 20-Oct-22 06:15 20-Oct-22 17:45 11.5 Hours
Daily		 923L (356s - 2075s) GOI, 923L (356s Milo - 2075s Newell) Emergency Repair; repair the Interphase spacer between structure 99-100  
ALTALINK, Lethbridge 20-Oct-22 08:00 20-Oct-22 10:00 2 Hours
Daily		 370s175 (172L) GOI, 172L (181s Chinook - 370s North Lethbridge) Trip test 552 breaker from new C60 module. Move trips from 552 C60 to new breaker  
ALTALINK, Lethbridge 20-Oct-22 10:00 20-Oct-22 12:00 2 Hours
Daily		 370s207X (207L) GOI, 207L (111s Coalbanks - 370s North Lethbridge) Trip test 652 breaker from new C60 module. Move trips from 652 C60 to new breaker  
ALTALINK 20-Oct-22 12:00 20-Oct-22 14:00 2 Hours
Daily		 370s2152 GOI, 370s 2152 (370s North Lethbridge), 370s T3 (370s North Lethbridge) Trip test 2152 breaker from new C60 module. Move trips from 2152 C60 to new breaker  
ALTALINK 21-Oct-22 06:15 21-Oct-22 17:45 11.5 Hours
Daily		 765L (151s - 419s) GOI, 765L (151s Strathmore - 419s Chestermere) Emergency repair; repair for conductor on the top right phase at structure 296  
ALTALINK 22-Oct-22 07:00 22-Oct-22 19:00 12 Hours
Continuous		 38s T1, 138kV Bus 1, & 736L (293s) - GOI, 38s T1 (38s East Edmonton), 736L (38s East Edmonton - 293s Bernese), 38s 138kV Bus 1 (38s East Edmonton) Replace insulators on 138kV Bus 1, replace switches 38s93 & 38s94, replace CTs @ 38s736E.  
ALTALINK 23-Oct-22 06:15 23-Oct-22 17:45 11.5 Hours
Daily		 607L (336s - 134s - 135s) GOI, 607AL (134s Taber Wind Farm - 607L tap), 607L (135s Conrad - 607AL tap), 607L (336s Fincastle - 607AL tap) Transmission Line Maintenance (Str 99)  
EPCOR 24-Oct-22 07:00 29-Oct-22 17:00 5.42 Days
Continuous		 1058L @ Lambton E803S and Summerside E657S, 1058L (657s Summerside - EP 803s Lambton) Aerial: 1058L Steel Structure Refurbishment  
ENMAX, ALTALINK 24-Oct-22 08:00 25-Oct-22 16:00 1.33 Days
Continuous		 832L. 12.1TR, 832L (SS-10 - SS-12) Install repaired radiator on 12.1TR  
ATCO 24-Oct-22 08:00 31-Oct-22 17:00 7.38 Days
Continuous		 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ALTALINK 24-Oct-22 08:00 04-Nov-22 13:00 11.21 Days
Continuous		 63s652 GOI, 63s 652 (63s Red Deer) 652 GOI Request for the 652 Breaker Failure and Control P&C Upgrade.  
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  
ATCO 24-Oct-22 10:30 27-Oct-22 17:00 3.27 Days
Continuous		 856S 902T, 856s 902T (856s Kinosis) 902T Maintenance  
ATCO 24-Oct-22 12:00 20-Dec-22 17:00 57.25 Days
Continuous		 720s 901T (720s Wabasca), 720s 502R (720s Wabasca), 720s 504R (720s Wabasca), 720S 720-501 720S Wabasca 901T Replacement, Load transferred to 902T  
ATCO 24-Oct-22 16:00 19-Dec-22 17:00 56.08 Days
Continuous		 939s 901T (939s Livock), 939S 900BS1, 939S 700BS1, 939s 240kV Bus 900BS1 (939s Livock), 939s 144kV Bus 700BS1 (939s Livock), 7L125 (939s Livock - 950s Germain) Livock Pile Heaving Project - Outage on 901T, 900BS1, and 700BS1  
ALTALINK 25-Oct-22 08:30 25-Oct-22 16:30 8 Hours
Daily		 310p1652 GOI, 310p 1652 (310p Sundance) 1st trip PRC 5 maintenance.  
ALTALINK 25-Oct-22 08:30 25-Oct-22 17:30 9 Hours
Daily		 320P2152 – GOI, 320p 2152 (320p Keephills) Fix SF6 gas leak  
BCH 25-Oct-22 09:00 10-Nov-22 17:00 16.38 Days
Continuous		 1L274 (48s Pocaterra - 978s BCH Britt Creek) replace end of life structures and set poles BC maintenance does not affect the Alberta ATC AB-BC
EPCOR 26-Oct-22 07:00 26-Oct-22 17:00 10 Hours
Continuous		 CD2401 @ Castledowns E557S, 557s CD2401 (557s Castle Downs) CD2401: NAIT Tour Switching Demonstration  
ALTALINK 26-Oct-22 07:00 27-Oct-22 17:00 1.42 Days
Continuous		 275s T2(Tx18458)& 240kV BUS 2 GOI, 275s T2 (275s Jenner), 275s 240kV Bus 2 (275s Jenner) Close Open Point "C", Install 949L slack span from transmission structure to A-frame, install wire bus drops to switch. This will energize the new Joss 240kV Bay. 2nd scope: repair hot switch 275s45  
ALTALINK 26-Oct-22 08:30 26-Oct-22 16:30 8 Hours
Daily		 310p2352 GOI, 310p 2352 (310p Sundance) 1st trip PRC 5 maintenance.  
ALTALINK 27-Oct-22 08:00 28-Oct-22 17:30 1.4 Days
Continuous		 1135L NEW (39s-Open Point 'H') - GOI Complete functional testing for new 1135L protections,  
ALTALINK 27-Oct-22 10:00 27-Oct-22 15:00 5 Hours
Continuous		 180L(255s - 928s) GOI, 180L (255s Vulcan - 928s East Stavely) PRC 1st trip and maintenance if required. 2nd Scope: Hardware tighten structure 180L161.  
ALTALINK 28-Oct-22 07:00 30-Oct-22 18:30 2.48 Days
Continuous		 658L (562s - I_662s - 649s) - GOI, 658L (562s Cypress - 649s Chappice Lake) RAS207 and RAS208 implementation and testing from 562s to 662s  
ALTALINK 28-Oct-22 14:45 30-Oct-22 17:45 2.13 Days
Continuous		 349s Station & 197L(928s-349s) GOI, 197L (349s Stavely - 928s East Stavely), 349s T1 (349s Stavely) 1.two single phase CVT to be installed with existing CVT2 to provide voltage input for undervoltage protection. 2.Add a junction box and connect to a new CVT distribution module. 3.Implement undervoltage protection A&B  
ALTALINK 28-Oct-22 14:45 30-Oct-22 17:45 2.13 Days
Continuous		 180L(180L296A-928s-255s) GOI, 180L (255s Vulcan - 928s East Stavely), 197L (349s Stavely - 928s East Stavely) Rebuild of autorestoration equipment at 928s 2nd Scope: Hardware tighten at 180L161 & repair structures 180L24 & 25  
ALTALINK 28-Oct-22 17:30 15-Nov-22 15:00 17.94 Days
Continuous		 1135L NEW (39s-Open Point 'H') - GOI Complete 1135L construction  
ALTALINK 29-Oct-22 08:00 30-Oct-22 17:30 1.4 Days
Continuous		 1084L NEW (39s-Open Point 'O') - GOI Complete functional testing for new 1084L protections  
ALTALINK 29-Oct-22 08:15 30-Oct-22 16:00 31.75 Hours
Continuous		 180L(15s-180L297) GOI, 180L (15s Fort Macleod - 180AL tap), 15s 180N (15s Fort Macleod) Line outage required for installation of screw piles underneath 180L  
ALTALINK 30-Oct-22 17:30 15-Nov-22 15:00 15.94 Days
Daily		 1084L NEW (39s-Open Point 'O') - GOI Complete 1084L construction  
Lethbridge, ALTALINK 31-Oct-22 08:00 31-Oct-22 12:00 4 Hours
Continuous		 667L and 813L ( 146s), 667L (146s MacDonald - 370s North Lethbridge), 813L (146s MacDonald - 241s Uplands) OPEN END OUTAGE TO ENERGIZE 146S T1 NEW TRANSFORMER  
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 - SS-21), 36.81L (44s Bearspaw Plant - SS-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  
ALTALINK 31-Oct-22 09:00 09-Nov-22 18:00 9.42 Days
Continuous		 1034L (244s - 324s) - GOI, 1034L (244s Bowmanton - 324s Cassils) Damper replacement between Structures #32-243 & 368-389  
ALTALINK, EPCOR 31-Oct-22 11:00 04-Nov-22 17:00 4.25 Days
Continuous		 1045L (310p-320p-E805s) - GOI, 1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) Customer line injection testing to verify grounding  
ALTALINK 31-Oct-22 11:30 03-Nov-22 17:30 3.25 Days
Continuous		 89s652 - GOI, 89s 652 (89s Ellerslie) 1st trip & PRC5 maintenance & change leaking capacitors  
ALTALINK 01-Nov-22 08:00 01-Nov-22 13:00 5 Hours
Daily		 63s552 GOI, 63s 552 (63s Red Deer) 552 GOI Request for the 652 Breaker Failure and Control P&C Upgrade.  
ALTALINK 01-Nov-22 08:00 02-Nov-22 17:30 1.4 Days
Continuous		 1168L NEW (39s-Open Point 'F') - GOI Complete functional testing for new 1168L protections.  
SUNCOR 01-Nov-22 08:00 02-Nov-22 20:00 1.5 Days
Continuous		 635-952-635PT-1000, 635EDD-1000 PT-1000 (635EDD-1000) Replace the leadking opening dashpot on the 260kV breaker  
ATCO 01-Nov-22 08:00 08-Nov-22 17:00 7.42 Days
Continuous		 7L01 (813s Little Smoky - 881s Sturgeon 2) 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		  
ALTALINK 01-Nov-22 09:00 01-Nov-22 16:00 7 Hours
Daily		 887L (48s) OOS, 887L (48s Pocaterra - 978s BCH Britt Creek) Open 887L at 48s for 9074R to 9273R Radio repair - This outage is coordinated with BC Hydro 887L outage.  
ATCO 01-Nov-22 10:00 01-Nov-22 11:00 60 Mins
Continuous		 7L22 (790s Poplar Hill - 7L88 tap), 790s 702 (790s Poplar Hill) 731S Elmworth Project
Protection upgrades		  
ATCO 01-Nov-22 13:00 01-Nov-22 14:00 60 Mins
Continuous		 7L07 (790s Poplar Hill - 815s Goodfare), 790s 703 (790s Poplar Hill) 731S Elmworth Project
Protection upgrades		  
ALTALINK 02-Nov-22 07:00 03-Nov-22 18:00 1.46 Days
Continuous		 836L (61s-283s) - GOI, 836L (61s Lodgepole - 283s Violet Grove) Install Bird Diverters on Crossarms at Structures 836L144, 145, 146, 147, 148, 149 & 150.  
ALTALINK 02-Nov-22 07:15 22-Nov-22 17:45 20.48 Days
Continuous		 924L (102s - 356s) GOI, 924L (102s Langdon - 356s Milo) Phase 3 of 924L project between Structures 13A-299, (work include M-tower bracket change outs, replacing insulation, replacing cold end hardware, replacing OHSW assemblies, and replacing spacer assemblies)  
ALTALINK 02-Nov-22 07:30 02-Nov-22 17:00 9.5 Hours
Daily		 63s 240kV South BUS GOI, 63s T2 (63s Red Deer), 63s 240kV South Bus (63s Red Deer) 63s 240BN GOI request for the 652 Breaker Failure and Control P&C upgrade.  
ENMAX 02-Nov-22 08:00 03-Nov-22 16:00 1.33 Days
Continuous		 65.1TR (SS-65) 65.1TR MT PRD Junction Box Investigate & Repair, Calisto cylinder exchange  
ALTALINK 02-Nov-22 17:30 15-Nov-22 15:00 12.94 Days
Continuous		 1168L NEW (39s-Open Point 'F') - GOI Complete 1084L construction  
ENMAX 03-Nov-22 08:00 04-Nov-22 18:00 1.42 Days
Continuous		 162.81L (391s Balzac - SS-162). 162sub 138KV Bus, 162.81L (391s Balzac - SS-162), 162B138-RB80 (SS-162), 162B138-RB81 (SS-162), 162MD138-162.81 (SS-162) 162 Sub 138kV DFR Installation  
ALTALINK 07-Nov-22 07:00 10-Nov-22 13:00 3.25 Days
Continuous		 74s T1 (Tx 18570) - GOI, 74s T1 (74s Janet) Replace T1 ‘A’ and ‘B’ protections  
ATCO 07-Nov-22 08:00 13-Nov-22 17:00 6.38 Days
Continuous		 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 07-Nov-22 10:00 07-Nov-22 14:00 4 Hours
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) 862S S. Bezanson Substation Rebuild Project,
Reconnect Jumper J3		  
ATCO 07-Nov-22 10:00 10-Nov-22 16:00 3.25 Days
Continuous		 7L224, 774S 701, 7L224 (650s Hansman Lake - 774s Monitor) Install 2 relays for line protections RAS A&B  
ATCO 07-Nov-22 12:00 13-Nov-22 16:00 6.17 Days
Continuous		 7L93 (828s Sulphur Point - 930s Arcenciel) Line Mitigation  
ALTALINK 08-Nov-22 07:30 09-Nov-22 18:00 1.44 Days
Continuous		 1065L (74s - 102s) - GOI, 1065L (74s Janet - 102s Langdon) Repairing 74s122  
ALTALINK 08-Nov-22 08:00 08-Nov-22 16:30 8.5 Hours
Daily		 338s552 GOI, 338s 552 (338s Cherhill) doble 3 CT's and take oil samples on 338s552 CT's (CT5).  
ATCO 08-Nov-22 11:00 08-Nov-22 17:00 6 Hours
Continuous		 7L32, 7L32 (811s Clairmont Lake - 862s South Bezanson) 862S S. Bezanson Substation Rebuild Project, Tap down mobile 902s from 7L32  
ALTALINK 09-Nov-22 06:00 09-Nov-22 18:00 12 Hours
Daily		 39s 240kV B2 & T2 - GOI, 39s T2 (39s Bickerdike), 39s 240kV Bus 2 (39s Bickerdike), 39s 1152 (39s Bickerdike), 39s 29 (39s Bickerdike), 39s 1752 (39s Bickerdike) Fix corona issue found on 240B2 and DC ground fault found on 1152 breaker  
ALTALINK 09-Nov-22 13:00 10-Nov-22 16:00 27 Hours
Continuous		 701L (223s - 7L701D1) - GOI, 701L (223s Strome - 7LA701 tap) Change arms and insulation on structures 421 and 424  
ALTALINK 10-Nov-22 13:00 10-Nov-22 18:00 5 Hours
Daily		 74s T1 & 240kV Bus B1 (1065L) - GOI, 74s T1 (74s Janet), 74s 240kV Bus 1 (74s Janet), 1065L (74s Janet - 102s Langdon) Test tripping of T1 high and low side breakers for new ‘A’ and ‘B’ protections  
EPCOR 14-Nov-22 07:00 25-Nov-22 17:00 11.42 Days
Continuous		 TX2 Zone @ Bellamy E814S, 814s T2 (814s Bellamy), 814s B2402 (814s Bellamy), 814s B2406 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
ALTALINK, ATCO 14-Nov-22 07:00 25-Nov-22 18:00 11.46 Days
Continuous		 1035L (244s - A2075s) - GOI, 1035L (244s Bowmanton - 2075s Newell) Damper replacement between Structures #32-243 & 368-389  
ATCO 14-Nov-22 08:00 16-Nov-22 17:00 2.38 Days
Continuous		 9L46 (932s Pemukan - 959s Lanfine) Sharp Hills Wind Farm Project
Outage for structure foundations work directly under 9L46		  
ALTALINK 14-Nov-22 09:00 15-Nov-22 18:00 1.38 Days
Continuous		 122s Tx18554 (T3) – GOI, 122s T3 (122s Alberta Newsprint) Fix leaks, maintain & test T3. Replace cracked CT on 13.8kV bus.  
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		  
ATCO 14-Nov-22 10:00 21-Nov-22 17:30 7.31 Days
Continuous		 9L59 (801s Anderson - 972s Tinchebray) Energize 1045s Garden Plain Substation.

Update settings at 801s and 972s on 9L59 relays to 3 terminal line differential.		  
ALTALINK 14-Nov-22 10:30 17-Nov-22 16:00 3.23 Days
Continuous		 39s26 - GOI, 39s 26 (39s Bickerdike) Replacement of 39s26 CTs  
ALTALINK 15-Nov-22 08:00 16-Nov-22 18:00 1.42 Days
Daily		 887L (48s) OOS, 887L (48s Pocaterra - 978s BCH Britt Creek) Open 887L at 48s for MPLS upgrades.  
EPCOR 21-Nov-22 07:00 24-Nov-22 17:00 3.42 Days
Continuous		 TX1 @ Castledowns E557S, 557s T1 (557s Castle Downs) Castledowns: Meter Upgrade P&C Cut-Overs  
EPCOR, ALTALINK 21-Nov-22 07:00 02-Dec-22 17:00 11.42 Days
Continuous		 PDS4, PDS5, PDS11, (1055L) @ Petrolia E816S and Argyll Transfer Station E629S, 1055L (629s Argyll Transfer Station - 816s Petrolia), 816s P2402 (816s Petrolia), 816s P2403 (816s Petrolia), 816s PDS4 (816s Petrolia), 816s PDS5 (816s Petrolia), 816s PDS11 (816s Petrolia), 240BA3 (629s Argyll Transfer Station - 814s Bellamy) Petrolia PDS4, PDS5, PDS11 LCR  
ALTALINK 21-Nov-22 07:30 24-Nov-22 16:30 3.38 Days
Continuous		 74s2052 - GOI, 74s 2052 (74s Janet) Replace 74s2052 breaker protection module  
ATCO 21-Nov-22 08:00 28-Nov-22 17:00 7.38 Days
Continuous		 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 21-Nov-22 10:00 23-Nov-22 17:30 2.31 Days
Continuous		 848s 902T (848s Ruth Lake), 848s 602TD (848s Ruth Lake) 72KV Rigid bus repair work.  
ATCO 21-Nov-22 12:00 28-Nov-22 16:00 7.17 Days
Continuous		 7L93, 7L93 (828s Sulphur Point - 930s Arcenciel) Line Mitigation  
EPCOR 22-Nov-22 07:00 22-Nov-22 17:00 10 Hours
Continuous		 TX1 @ Summerside E657S, 657s T1 (657s Summerside) Summerside TX1 Tap Changer Maintenance  
ALTALINK 22-Nov-22 07:30 22-Nov-22 18:30 11 Hours
Daily		 86s 240kV Bus & T1 - GOI, 914L (86s Bigstone - 87s Gaetz), 914L (86s Bigstone - 289s Saunders Lake), 86s 240kV Bus (86s Bigstone), 86s T1 (86s Bigstone) Replace risers on 86s1752 & 86s1252. Replace 240kV JB DC1.  
EPCOR 23-Nov-22 07:00 23-Nov-22 17:00 10 Hours
Continuous		 1098L Jasper Zone @ Jasper Terminal E805S and Poundmaker, 1098L (EP 805s Jasper - Poundmaker), EP 805s J2401 (EP 805s Jasper), EP 805s J2407 (EP 805s Jasper) Jasper: JDS1 Disconnect Maintenance  
ALTALINK 23-Nov-22 12:00 23-Nov-22 16:00 4 Hours
Daily		 275s2 GOI, 275s 2 (275s Jenner) Outage on breaker 275s2 (1452) for circuit cutovers to new L5 ‘B’ protection  
ALTALINK 23-Nov-22 23:00 24-Nov-22 03:00 4 Hours
Continuous		 62s 11 (62s Brazeau Plant Plant) maintenance  
ALTALINK 24-Nov-22 03:00 24-Nov-22 07:00 4 Hours
Daily		 62s 12 (62s Brazeau Plant 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  
ALTALINK 28-Nov-22 07:30 01-Dec-22 16:30 3.38 Days
Continuous		 74s2152 - GOI, 74s 2152 (74s Janet) Replace 74s2152 breaker protection module  
ALTALINK 28-Nov-22 08:00 01-Dec-22 17:30 3.4 Days
Continuous		 370s 240kV Bus 1 (370s North Lethbridge), 370s T3 (370s North Lethbridge), 370s 240kV BUS 1 & T3(Tx 18307) GOI Replacement of the 370s25 post insulators adjustment of switch  
ATCO 28-Nov-22 08:00 05-Dec-22 17:00 7.38 Days
Continuous		 7L46, 7L46 (813s Little Smoky - 845s Big Mountain) 813S Little Smoky Rebuild
Complete 7L46 wiring panel 7P2, 705, 706 CT/PT/P&C
wiring. Demo existing wiring/cabling, remove old
panel 7G, replace 705CT and 706CT junction boxes.
Relay programming and functionality
Commission control, alarms and status		  
ATCO 28-Nov-22 08:00 13-Dec-22 17:00 15.38 Days
Continuous		 9L46 (932s Pemukan - 959s Lanfine) Sharp Hills Wind Farm Project
Outage for Line termination to 363S Sedalia on 9L46		  
BCH 28-Nov-22 09:00 02-Dec-22 17:00 4.33 Days
Continuous		 T2 (BCH Natal) transformer inspection/ doble and non-electrical testing BC maintenance does not affect the Alberta ATC AB-BC
ALTALINK, ATCO 28-Nov-22 09:00 05-Dec-22 18:00 7.38 Days
Continuous		 1035L (244s - A2075s) - GOI, 1035L (244s Bowmanton - 2075s Newell) Damper replacement between Structures #32-243 & 368-389  
ALTALINK 28-Nov-22 12:00 02-Dec-22 18:00 4.25 Days
Continuous		 997L (430s-71s) - GOI, 997L (71s Lamoureux - 430s Ursus) Component Replacements on 997L ( Str's Range 9-22)  
ALTALINK 30-Nov-22 06:15 30-Nov-22 18:45 12.5 Hours
Daily		 924L (102s - 356s) GOI, 924L (102s Langdon - 356s Milo) Phase 3 of 924L project between Structures 90, 92, (work include changing out dead-end insulators on structures)  
ALTALINK 30-Nov-22 11:00 30-Nov-22 15:00 4 Hours
Daily		 250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 30-Nov-22 12:00 30-Nov-22 16:00 4 Hours
Continuous		 275s8 GOI, 275s 8 (275s Jenner) Outage on breaker 275s8 (1652) for circuit cutovers to new L4 ‘A’ protection  
ALTALINK 01-Dec-22 07:15 15-Dec-22 17:45 14.44 Days
Continuous		 927L (102s - 356s) GOI, 927L (102s Langdon - 356s Milo) Phase 3 of 927L project between Structures 33-301, (work include replacing insulation, replacing cold end hardware, replacing OHSW assemblies, replacing spacer assemblies, find, fix and splice the wire core between 33-44)  
ALTALINK 01-Dec-22 09:00 01-Dec-22 13:00 4 Hours
Daily		 250p 22 (250p Bighorn Plant) maintenance  
ALTALINK 05-Dec-22 09:30 05-Dec-22 12:30 3 Hours
Daily		 74s16 (T1) - Advice, 74s T1 (74s Janet) Trip test 74s16 from new 2052 breaker fail relay  
ATCO 05-Dec-22 12:00 12-Dec-22 16:00 7.17 Days
Continuous		 7L93, 7L93 (828s Sulphur Point - 930s Arcenciel) Line Mitigation  
ALTALINK 05-Dec-22 12:30 05-Dec-22 15:30 3 Hours
Daily		 74s2152 - Advice, 74s 2152 (74s Janet) Trip test 74s2152 from new 2052 breaker fail relay  
ALTALINK 05-Dec-22 15:30 05-Dec-22 18:30 3 Hours
Daily		 74s2552 - Advice, 74s 2552 (74s Janet) Trip test 74s2552 from new 2052 breaker fail relay  
ALTALINK 06-Dec-22 09:30 06-Dec-22 12:30 3 Hours
Daily		 74s2752 - Advice, 74s 2752 (74s Janet) Trip test 74s2752 from new 2052 breaker fail relay  
ALTALINK 06-Dec-22 12:30 06-Dec-22 15:30 3 Hours
Daily		 74s3752 - Advice, 74s 3752 (74s Janet) Trip test 74s3752 from new 2052 breaker fail relay  
ALTALINK 06-Dec-22 15:30 06-Dec-22 18:30 3 Hours
Daily		 74s552 - Advice, 74s 552 (74s Janet) Trip test 74s552 from new 2052 breaker fail relay  
ALTALINK 07-Dec-22 09:30 07-Dec-22 12:30 3 Hours
Daily		 74s2052 - Advice, 74s 2052 (74s Janet) Trip test 74s2052 from new 2152 breaker fail relay  
ALTALINK 07-Dec-22 12:00 07-Dec-22 16:00 4 Hours
Continuous		 275s8 GOI, 275s 8 (275s Jenner) Outage on breaker 275s8 (1652) for circuit cutovers to new L4 ‘A’ protection  
ALTALINK 07-Dec-22 12:30 07-Dec-22 15:30 3 Hours
Daily		 74s2252 - Advice, 74s 2252 (74s Janet) Trip test 74s2252 from new 2152 breaker fail relay  
ENMAX, ALTALINK 10-Dec-22 08:00 11-Dec-22 16:00 1.33 Days
Continuous		 936L, 936L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ENMAX, ALTALINK 10-Dec-22 08:00 11-Dec-22 16:00 1.33 Days
Continuous		 937L, 937L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ATCO 12-Dec-22 08:00 15-Dec-22 17:00 3.38 Days
Continuous		 7L80, 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
EPCOR 12-Dec-22 09:30 22-Dec-22 17:00 10.31 Days
Continuous		 240BA2 Zone @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy), 814s B2401 (814s Bellamy), 814s B2402 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
ENMAX, ALTALINK 16-Dec-22 08:00 18-Dec-22 16:00 2.33 Days
Continuous		 936L, 936L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ENMAX, ALTALINK 16-Dec-22 08:00 18-Dec-22 16:00 2.33 Days
Continuous		 937L, 937L (5s East Calgary - 102s Langdon) Line Clearance Mitigation  
ATCO 20-Dec-22 08:00 20-Dec-22 17:00 9 Hours
Continuous		 939S 900BS2, 939S 900BS3, 9L10 (876s Brintnell - 939s Livock), 939s 903T (939s Livock), 939s 240kV Bus 900BS2 (939s Livock), 939s 240kV Bus 900BS3 (939s Livock) Livock Pile Heaving Project
Close jumper and Disconnect Bypass		  
ATCO 03-Jan-23 08:00 09-Jan-23 17:00 6.38 Days
Continuous		 7L80, 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ALTALINK 04-Jan-23 08:30 05-Jan-23 16:30 1.33 Days
Continuous		 895s100 (100L) - Advice, 100L (498s Tilley - 895s Suffield) Migrate and commission all 895s100 (752) & L2-100L at 895s Suffield associated line protections, recloser, synch check, breakers, breaker fail alarms, status, controls, metering and remote access to new RTU and LAN. Implement fault reporting on 100L.  
ATCO 09-Jan-23 11:00 23-Jan-23 10:00 13.96 Days
Continuous		 7L32, 7L32 (813s Little Smoky - 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 10-Jan-23 08:30 11-Jan-23 17:30 1.38 Days
Continuous		 895s892 (892L) - Advice, 892L (244s Bowmanton - 895s Suffield) Migrate and commission all 895s892 (652) & L1-892L at 895s Suffield associated line protections, Overload RAS, recloser, synch check, breakers, breaker fail alarms, status, controls, metering and remote access to new RTU and LAN. Implement fault reporting on 892L.  
ALTALINK 12-Jan-23 09:00 19-Jan-23 17:00 7.33 Days
Continuous		 763AL (763AL1 - 447s) - GOI, 763AL (447s Enchant - 763L tap) Outage needed to build line tap structure and connect new 763CL  
ATCO 16-Jan-23 08:00 23-Jan-23 17:00 7.38 Days
Continuous		 7L80, 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
ATCO 17-Jan-23 09:30 17-Jan-23 17:00 7.5 Hours
Continuous		 730S 700 BUS 1, 730s 144kV Bus 1 (730s Rycroft), 7L73 (730s Rycroft - 829s Boucher Creek), 730s 701T (730s Rycroft) SVC addition and 144 kV bus upgrade. 700BS1 will be OOS to create open jumper J2.  
ATCO 18-Jan-23 07:00 29-Jan-23 17:00 11.42 Days
Continuous		 730S 700 BUS 1, 7L68 (730s Rycroft - 811s Clairmont Lake), 7L73 (730s Rycroft - 829s Boucher Creek), 730s 144kV Bus 1 (730s Rycroft) SVC addition and 144 kv bus rebuild.  
ATCO 30-Jan-23 08:00 06-Feb-23 17:00 7.38 Days
Continuous		 7L80, 7L80 (733s Simonette - 857s Kakwa Ridge) 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) disconnect existing 75-PLH-901 from Horizon substation 75 and connect new bus Horizon substation 75 (former 75-PLH-901 bay) to new 838S-900BS2 ATCO 9L32-9L66 CNRL- Horizon Project  
ATCO 30-Jan-23 09:30 30-Jan-23 17:00 7.5 Hours
Continuous		 730S 700 BUS 1, 7L73 (730s Rycroft - 829s Boucher Creek), 730s 144kV Bus 1 (730s Rycroft), 730s 701T (730s Rycroft) SVC addition and 144 kV bus upgrade  
ATCO 13-Feb-23 08:00 20-Feb-23 17:00 7.38 Days
Continuous		 7L80, 7L80 (733s Simonette - 857s Kakwa Ridge) Line mitigation, Cross arm replacement  
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 10:00 28-Feb-23 17:00 7.29 Days
Continuous		 7L45, 7L45 (798s Bridge Creek - 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 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  
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 20-Mar-23 09:00 31-Mar-23 17:30 11.35 Days
Continuous		 13L50 (DC LINK), 13L50 (2029s Heathfield - 2075s Newell) HMI IT Upgrades AT 2075s & 2029s  
ATCO 20-Mar-23 10:00 03-Apr-23 17:00 14.29 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 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 24-Apr-23 11:00 08-May-23 17:00 14.25 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		  
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		  
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 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 26-Jun-23 13:00 03-Jul-23 17:00 7.17 Days
Continuous		 766S 144KV Bus, 766S 240KV Bus 766S Nevis Rebuild Project - Upgrade bus to bundled 477, connect new 704A, P&C wiring and commissioning,  
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 07-Aug-23 13:00 07-Aug-23 17:00 4 Hours
Continuous		 7L86 (822s Wolf Lake - 1200s Foster Creek), 7L86 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 - 1200s 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 21-Aug-23 10:00 21-Aug-23 17:00 7 Hours
Continuous		 9L20 (755s Cordel - 766s Nevis), 9L912 (63s Red Deer - 766s Nevis), 766s 901T (766s Nevis) 766S Nevis Rebuild Project - Hot Line crew connect 9L20/9L912 bypass, cut in open Jumper J1 and J2  
ATCO 21-Aug-23 10:00 06-Nov-23 17:00 77.33 Days
Continuous		 766S 144KV Bus, 766S 240KV Bus 766S Nevis Rebuild Project - Replace and commission 9L912D1, 9L20D2, 901, 902, 901CT, 902CT, 901A, 902A, 900PT1, connect new bus section  
ATCO, IMPERIALOIL 23-Aug-23 08:00 30-Sep-23 18:00 38.42 Days
Continuous		 7L105 (837s Mahihkan - 909s Mahno), 7L161 (909s Mahno - 942s Nabiye), 909s 52A3 (909s MAHNO), 909s TNS-A1 (909s Mahno), 909s TNS-A2 (909s Mahno) maintenance  
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		  
ATCO 07-Nov-23 10:00 07-Nov-23 17:00 7 Hours
Continuous		 9L20 (755s Cordel - 766s Nevis), 9L912 (63s Red Deer - 766s Nevis), 766s 901T (766s Nevis) 766S Nevis Rebuild Project - Hot Line crew disconnect 9L20/9L912 bypass, close open Jumper J1 and J2, Energize 240kV bus including new 903T and to 144kV bus  
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: 2022-09-28   15:01:55


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