Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2022-01-15

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

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Owner From To Duration Element Scheduled Activity Affected Intertie
ATCO 09-Dec-21 13:00 28-Jan-22 17:00 50.17 Days
Continuous		 863s 902T (863s Paintearth) forced outage and troubleshooting  
ATCO 10-Jan-22 08:00 30-Jan-22 17:00 20.38 Days
Continuous		 9L05 (809s Louise Creek - 813s Little Smoky) Louise Creek rebuild project
wiring for 904/905BF relays, CT ratio changes, relay programming and functionality, commission control, alarms and status, blocking procedures for BF and bus protections		  
EPCOR 17-Jan-22 07:00 04-Mar-22 17:00 46.42 Days
Continuous		 Summerside S/S Tx1 bay outage, 657s T1 (657s Summerside) Continuation of 240 kV ring re-configuration for South East Expansion Project.

Tx1 bay to be isolated for 240 kV bus re-configuration and installation of SU2405, SUDS11 and CVT's.

Upon restoration Tx1 to be energized from SU2404 and a new isolation point of SUDS11 disconnect to remain open.		  
ATCO 17-Jan-22 09:00 24-Jan-22 12:00 7.13 Days
Continuous		 7L46, 7L46 (813s Little Smoky - 845s Big Mountain) Changing Poles under Mitigation and Test and Treat  
ATCO 17-Jan-22 09:00 24-Jan-22 16:00 7.29 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) Changing Arms and Pole Repairs  
ATCO 17-Jan-22 10:00 21-Jan-22 17:30 4.31 Days
Continuous		 951S SVC, 951s SVC (951s Thickwood) Warranty Repairs, annual inspections  
BCH 18-Jan-22 09:00 25-Jan-22 17:00 7.33 Days
Continuous		 1L274 (48s Pocaterra - Britt Creek) transmission refurbishment AB-BC
ALTALINK 19-Jan-22 08:00 23-Jan-22 18:00 4.42 Days
Continuous		 924L(102s - 356s) GOI, 924L (102s Langdon - 356s Milo) Component replacements for 924L (Str' 1-299). D/C 927L.  
ALTALINK 20-Jan-22 08:00 22-Jan-22 17:00 2.38 Days
Continuous		 973L (39s-310p) - GOI, 973L (39s Bickerdike - 310p Sundance) Install new 973L Str 2 in the existing line. Install new 1135L3 in the existing 973L line. Install conductor between new Str 2 and 1C to connect 973L in the new alignment. Remove conductor between new 973L2 and 1135L3. (P2032)  
ALTALINK, EPCOR 22-Jan-22 07:00 22-Jan-22 18:00 11 Hours
Daily		 920L (71s - E557s) - GOI, 920L (71s Lamoureux - 557s Castle Downs) Maintenance on structure 48  
ALTALINK 23-Jan-22 08:00 25-Jan-22 17:00 2.38 Days
Continuous		 974L (39s-310p) - GOI, 974L (39s Bickerdike - 310p Sundance) Install new 974L Str 2 in the existing line. Install new 1084L Str 3 in the existing 974L line. Install conductor between new 974L Str 2 and 1C to connect 974L in the new alignment. Remove conductor between new 974L2 and 1084L3. (P2032)  
EPCOR 24-Jan-22 07:00 28-Jan-22 17:00 4.42 Days
Continuous		 LDS5 @ Lambton E806S, EP 803s L2403 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton), EP 803s T3 (EP 803s Lambton) Lambton LDS5 LCR  
ATCO, ALTALINK 24-Jan-22 08:00 27-Jan-22 17:00 3.38 Days
Continuous		 7L129, 7L129 (526s Buffalo Creek - 7LA129 tap) GOI 7L129D3 to 526S Buffalo Creek Reroute Transmission Line around water  
ALTALINK 25-Jan-22 07:00 26-Jan-22 18:00 1.46 Days
Continuous		 789L (898s Heart Lake - 1034s Margie), 789L (789L192A-A898s-602L1) - GOI Scope of work includes maintenance on structure 78  
ATCO 25-Jan-22 08:00 26-Jan-22 14:00 30 Hours
Continuous		 930S 700 BUS 5, 930S SVC, 930s SVC (930s Arcenciel) Replace recalled RXTP Test Switches on 700BS5 Protection Circuits - 930S SVC unavailable  
ALTALINK 26-Jan-22 07:00 29-Jan-22 18:00 3.46 Days
Continuous		 39s29 - GOI, 39s 29 (39s Bickerdike) Install A frame for future 974L and 1168L  
ALTALINK 27-Jan-22 07:45 27-Jan-22 16:15 8.5 Hours
Daily		 777L (48s-245s) OOS, 777L (48s Pocaterra - 245s Seebe) de-energize 777L due to the PLC being out of service AB-BC
ALTALINK 29-Jan-22 07:15 30-Jan-22 17:45 1.44 Days
Daily		 33s 2 (33s Spray) Scope of work includes stringing new conductor on 113L from 33s Spray to Structure 2. GOI required due to limits of approach violation & cannot be done under reclosing.  
EPCOR 31-Jan-22 07:00 31-Jan-22 17:00 10 Hours
Continuous		 J2401 @ Jasper Terminal E805S, 805s J2401 (805s Jasper) Jasper: P&C RAS Scheme Cut Over and Op-Checks  
EPCOR 31-Jan-22 07:00 04-Feb-22 17:00 4.42 Days
Continuous		 TX1 Zone @ Bellamy E814S, 814s T1 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
EPCOR 31-Jan-22 07:00 04-Feb-22 17:00 4.42 Days
Continuous		 TX3 @ Jasper Terminal E805S, 805s T3 (805s Jasper) Jasper protection upgrade cutovers  
EPCOR 31-Jan-22 07:00 18-Feb-22 17:00 18.42 Days
Continuous		 Poundmaker S/S Tx4 bay outage Continuation of 240 kV ring re-configuration for WETUP project. (P1649)

Outage will provide isolation for tie in of new Tx4.		  
ATCO 31-Jan-22 09:00 04-Feb-22 17:30 4.35 Days
Continuous		 2029S 500SST2, 2029s 1200SST2 (2029s Heathfield) Breaker 10NA02-Q03 Investigate & Repair in LV2.

Low voltage isolations will occur in the 480 V rooms (in addition to using 502VRA).

Alarms will occur when switching out the LV room, as the circuits change over from 1 source to the other.

500 kV breakers on transformer primary will be opened for a few moments while opening 502VRA.		  
ATCO 31-Jan-22 09:00 07-Feb-22 12:00 7.13 Days
Continuous		 7L46, 7L46 (813s Little Smoky - 845s Big Mountain) Changing Poles under Mitigation and Test and treat  
ATCO 31-Jan-22 09:00 07-Feb-22 16:00 7.29 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) hanging Arms and Pole Repairs  
ATCO 31-Jan-22 09:00 20-Feb-22 17:00 20.33 Days
Continuous		 9L939 (77s Sagitawah - 809s Louise Creek) Louise Creek Rebuild project

Wiring for 905/906BF relays.
CT ratio changes.
Relay programming.
Commission control, alarms and status.
Blocking procedures for BF and Bus protections.		  
ATCO 31-Jan-22 12:00 31-Jan-22 17:00 5 Hours
Continuous		 7L66, 7L66 (715s Leming Lake - 717s Ethel Lake) Tie in structure 32 on 7L66. HOP on 7L91  
ALTALINK 31-Jan-22 12:30 31-Jan-22 15:30 3 Hours
Continuous		 1201L (520s Bennett - BCH Cranbrook), 520s 552 (520s Benett) urgent 520s552 gas sampling AB-BC
BHE Canada 31-Jan-22 12:30 31-Jan-22 15:30 3 Hours
Continuous		 MATL (120s Picture Butte - Montana) align with 1201L urgent outage AB-MATL
EPCOR 01-Feb-22 07:00 01-Feb-22 17:00 10 Hours
Continuous		 J2407 @ Jasper Terminal E805S, 805s J2407 (805s Jasper) Jasper: P&C RAS Scheme Cut Over and Op-Checks  
ALTALINK 02-Feb-22 07:00 06-Feb-22 18:00 4.46 Days
Continuous		 39s 240kV Bus 2 - GOI, 39s 240kV Bus 2 (39s Bickerdike) Install new 973L, 974L and 1168L into A-frames at 39S as part of Cascade Project. New spans to 973L, 974L and 1168L A-frames to cross over 39S 240 kV bus 2.  
ENMAX, ALTALINK 02-Feb-22 08:00 04-Feb-22 16:00 2.33 Days
Continuous		 23.80L. 23.4TR, 23.80L (74s Janet - ENMAX 23) 23 Sub 138kV DFR Equipment Upgrade  
EPCOR 07-Feb-22 07:00 11-Feb-22 17:00 4.42 Days
Continuous		 TX4 @ Jasper Terminal E805S, 805s T4 (805s Jasper) Jasper protection upgrade cutovers  
EPCOR 07-Feb-22 07:00 11-Feb-22 17:00 4.42 Days
Continuous		 240BA Zone @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy) Bellamy 240kV SF6 Maintenance  
ENMAX, ALTALINK 07-Feb-22 08:00 08-Feb-22 18:00 1.42 Days
Continuous		 832L. 10.1TR., 832L (ENMAX 10 - ENMAX 12) HV SW Maint. SW81, SW82, SW83, MD-10.1TR  
ALTALINK 07-Feb-22 08:30 07-Feb-22 13:30 5 Hours
Daily		 320p400 (SSTA & SSTB) - GOI, 400L (320p Keephills - 320p Keephills) 1st trip and PRC5 maintenance; New C60 breaker fail trip testing on breaker 1552 (320p400)  
ALTALINK, ENMAX 08-Feb-22 07:15 09-Feb-22 17:45 1.44 Days
Continuous		 918L (281s - 162s) GOI, 918L (281s Johnson - ENMAX 162) Fire Mitigation (Str 797, 810, 813, 818, 825, 835)  
ALTALINK 08-Feb-22 11:45 08-Feb-22 18:15 6.5 Hours
Daily		 887L (48s) OOS, 887L (48s Pocaterra - BCH Britt Creek) Open 887L for 266s MPLS upgrade (coincides with 278560). Work is coordinated with BC 887L outage. AB-BC
ENMAX, ALTALINK 09-Feb-22 08:00 10-Feb-22 18:00 1.42 Days
Continuous		 693L. 10.2TR., 693L (42s Sarcee - ENMAX 10) HV SW Maint. SW84, SW85, SW86, MD-10.2TR  
ALTALINK 09-Feb-22 09:00 16-Feb-22 18:00 7.38 Days
Continuous		 927L(102s - 356) GOI, 927L (102s Langdon - 356s Milo) Component replacements for 927L (Str' 1A-302). D/C 924L.  
ALTALINK, TRANSALTA 10-Feb-22 07:30 10-Feb-22 16:30 9 Hours
Continuous		 59s 138kV Bus (T1 & 616L) - GOI, 59s T1 (59s Peigan), 616L (59s Peigan - 616AL tap) repair PT oil level glass  
EPCOR 14-Feb-22 07:00 18-Feb-22 17:00 4.42 Days
Continuous		 805s T3 (805s Jasper), TX3 @ Jasper Terminal E805S 15kV BUS PT Replacement  
EPCOR 14-Feb-22 07:00 18-Feb-22 17:00 4.42 Days
Continuous		 TX2 Zone @ Bellamy E814S, 814s T2 (814s Bellamy) Bellamy 240kV SF6 Maintenance  
ALTALINK 14-Feb-22 08:00 23-Feb-22 18:30 9.44 Days
Continuous		 39s 138kV B2, T2, 240B2, & 973L - GOI, 39s T2 (39s Bickerdike), 973L (39s Bickerdike - 310p Sundance) Complete relocation of 973L, Complete connection of 1135L Close open point ‘K’,Complete breaker fail, T2 trip testing from/to 39s452, 39s852, 39s1152, 39s29, 39s1752 (P2032)  
ATCO 14-Feb-22 09:00 21-Feb-22 12:00 7.13 Days
Continuous		 7L46, 7L46 (813s Little Smoky - 845s Big Mountain) Changing Poles under Mitigation and Test N treat  
ATCO 14-Feb-22 09:00 21-Feb-22 14:30 7.23 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) hanging Arms and Pole Repairs  
ALTALINK 22-Feb-22 12:00 22-Feb-22 18:00 6 Hours
Daily		 702L (A757s - 137s) - GOI, 702L (137s Sedgewick - 757s Battle River) Fire mitigation on Structures #113, 116 & 117  
ALTALINK 24-Feb-22 07:00 24-Feb-22 18:00 11 Hours
Continuous		 310p 240kV B Bus - GOI, 310p 240kV Bus B (310p Sundance) Scope of work includes replacing insulators on structures 310P and 1 on 1046L, we require a GOI on the B bus in order to safely handle the conductor running over the bus work as well as safely set up the equipment inside the 310p Sundance Substation. Required due to proximity for 1046L GOI See also SAP: 277114  
ALTALINK 24-Feb-22 07:00 27-Feb-22 18:00 3.46 Days
Continuous		 1046L (310p-338s) - GOI, 1046L (310p Sundance - 338s Cherhill) Scope of work includes maintenance on structures 310p, 1 ,21, 22, 23, 24, 25, 26, 55, 57, 74, 75, 80, 89, 90, 91, 102, 110, 111, 120 and 121. See also 310p 240kV Bus SAP: 277113 Required due to proximity to 1046L and also SAP: 277115 902L R/B required due to proximity to 1046L  
EPCOR 28-Feb-22 07:00 04-Mar-22 17:00 4.42 Days
Continuous		 805s T1 (805s Jasper), TX1 @ Jasper Terminal E805S Surge Arrestor Replacement  
EPCOR 28-Feb-22 07:00 04-Mar-22 17:00 4.42 Days
Continuous		 240BA2 Zone @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy) Bellamy 240kV SF6 Maintenance  
ALTALINK 28-Feb-22 07:30 01-Mar-22 17:30 1.42 Days
Continuous		 902L (310p-19s) - GOI, 902L (19s Wabamun - 310p Sundance) Scope of work includes installing bird divertors on the OHSW on structures 36, 37, 38, 39, 40 and 41. See also 1046L Recloser block SAP: 277117 required due to proximity to 902L  
ATCO 28-Feb-22 09:00 07-Mar-22 16:00 7.29 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) Changing Arms and Pole Repairs  
ALTALINK, ENMAX 28-Feb-22 12:30 28-Feb-22 17:30 5 Hours
Daily		 42s693 (693L) - GOI, 693L (42s Sarcee - ENMAX 10) Techs require a breaker outage on 42s693 Breaker to add in wiring for trip coil monitoring on the following relay: 96/1452 (s693)  
ALTALINK 01-Mar-22 07:00 11-Mar-22 18:00 10.46 Days
Continuous		 927L(102s - 356) GOI, 927L (102s Langdon - 356s Milo) Component replacements for 927L (Str' 1A-302). D/C 924L.  
ALTALINK 01-Mar-22 07:00 14-Mar-22 18:00 13.42 Days
Continuous		 39s 240B1, 974L, 1084L, 1168L - GOI Complete relocation of 974L (P2032)  
ATCO, ALTALINK 01-Mar-22 08:00 03-Mar-22 18:00 2.42 Days
Continuous		 7L65, 7L77, 7L65 (709s Vegreville - 710s Vermilion), 7L77 (395s North Holden - 709s Vegreville) String over 7L65 and 7L77  
ENMAX, ALTALINK 02-Mar-22 08:00 04-Mar-22 18:00 2.42 Days
Continuous		 23.80L. 23.4TR, 23.80L (74s Janet - ENMAX 23) HV SW Maint. SW84, SW88, SW87, MD-23.4TR  
ATCO 03-Mar-22 08:00 04-Mar-22 17:00 1.38 Days
Continuous		 7L03, 7L03 (749s Flyingshot Lake - 7L09 tap) Relay work for the Northstone Project  
EPCOR, ALTALINK 07-Mar-22 07:00 01-Apr-22 17:00 25.38 Days
Continuous		 Summerside S/S Tx2 bay outage, 1057L bay outage and SU2405 bay outage, 657s T2 (657s Summerside), 1057L (89s Ellerslie - 657s Summerside) Continuation of 240 kV ring re-configuration for South East Expansion Project.

Outage will provide isolation for HV bus re work and SUDS12 installation.		  
ATCO 07-Mar-22 08:00 07-Mar-22 17:00 9 Hours
Continuous		 7L69, 7L69 (731s Elmworth - 815s Goodfare) 731s Elmworth project  
ALTALINK 07-Mar-22 09:30 10-Mar-22 18:00 3.35 Days
Continuous		 410s T1, 240kV Bus 1, 138kV Bus 1 – GOI, 410s 138kV Bus 1 (410s Josephburg), 410s 240kV Bus 1 (410s Josephburg), 410s T1 (410s Josephburg) Migration of control and status of MODs 410s12 and 410s15. Functioning of these devices will be required. Migration of alarms, metering and controls to protections T1/A87/50/51, T1/B87/50/51, 240B1/A87, 240B1/B87, 138B1/A87, and 138B1/B87. Migration and function testing of CVT3 and VT5 Alarms  
ATCO 08-Mar-22 08:00 08-Mar-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-Mar-22 08:00 08-Mar-22 18:00 10 Hours
Continuous		 24.81L. 24.83L. 24.1TR, 24.81L (ENMAX 24 - ENMAX 31), 24.83L (74s Janet - ENMAX 24) HV SW Maint. MD-24.1TR  
ALTALINK, Lethbridge 08-Mar-22 09:30 08-Mar-22 13:30 4 Hours
Daily		 370s667 (667L) - GOI, 667L (146s Lethbridge MacDonald - 370s North Lethbridge) 1st trip and PRC5 maintenance  
ALTALINK 08-Mar-22 13:30 08-Mar-22 17:00 3.5 Hours
Daily		 370s2252 (T5) - GOI, 370s T5 (370s North Lethbridge) 1st trip and PRC5 maintenance  
ATCO, ALTALINK 09-Mar-22 07:00 10-Mar-22 17:00 1.42 Days
Continuous		 7L77, 7L77 (395s North Holden - 709s Vegreville) 7L65 Rebuild Project  
ATCO 09-Mar-22 08:00 09-Mar-22 17:00 9 Hours
Continuous		 7L07, 7L07 (790s Poplar Hill - 815s Goodfare) 731s Elmworth project  
ALTALINK 12-Mar-22 07:00 12-Mar-22 18:00 11 Hours
Daily		 463L (15s - 463L46) - GOI, 463L (15s Fort Macleod - 463L46) Fire mitigation on Structure #224  
ATCO 14-Mar-22 08:00 15-Mar-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, ALTALINK 14-Mar-22 08:00 17-Mar-22 17:00 3.38 Days
Continuous		 7L129, 7L129 (526s Buffalo Creek - 7LA129 tap) GOI 7L129D3 to 526S Buffalo Creek Reroute Transmission Line around water  
ATCO 14-Mar-22 08:00 03-Apr-22 16:00 20.33 Days
Continuous		 951S 900BS2, 951S 908, 951S 903, 951S 906, 951S 907 951S construction for 9L162 & 9L193 addition
AESO should be notified of any changes to below workplan:

Isolation pts: 908B,909A
Impact: BKR 908 OOS
Scope of work: Demo bus & install 909A & 909B
March 31, 2022 – April 01, 2022
Expand to isolation pts:903B, 906B,908B
Impact: BKR 903,BKR 906, 900BS2 OOS
Scope of work: Make connections to 909A & 912A		  
ATCO 14-Mar-22 09:00 21-Mar-22 16:00 7.29 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) Changing Arms and Pole Repairs  
ALTALINK 14-Mar-22 09:30 17-Mar-22 18:00 3.35 Days
Continuous		 410s T2, 240kV Bus 2, 138kV Bus 2 – GOI, 410s 138kV Bus 2 (410s Josephburg), 410s 240kV Bus 2 (410s Josephburg), 410s T2 (410s Josephburg) Migration of control and status of MODs 410s14 and 410s16. Functioning of these devices will be required. Migration of alarms, metering and controls to protections T2/A87/50/51, T2/B87/50/51, 240B2/A87, 240B2/B87, 138B2/A87, and 138B2/B87. Migration and function testing of CVT4 and VT6 Alarms  
ALTALINK 14-Mar-22 12:00 15-Mar-22 18:00 30 Hours
Continuous		 28s 138kV Bus 2 (827L/853L & T2) - GOI, 28s T2 (28s West Brooks), 827L (28s West Brooks - 121s Brooks), 853L (28s West Brooks - 853AL tap) 28s27 hot switch, 28s827L line polymer dead end damage, 28s827E motor mech.  
ALTALINK 14-Mar-22 12:00 17-Mar-22 18:00 3.25 Days
Continuous		 1206L (89s - 12s) - GOI, 1206L (12s Heartland - 89s Ellerslie) Component Replacements on 1206L ( Structure Range 2-193)  
ALTALINK, ATCO 14-Mar-22 12:00 17-Mar-22 18:00 3.25 Days
Continuous		 7L230(A743s-234s-69s) and 234s888 GOI, 7L230 (69s North Barrhead - 7L230 tap), 7L230 (743s Sarah Lake - 7L230 tap), 888AL (234s Fort Assiniboine - 7L230 tap) 1st trip & full maintenance, adjust 234s1.  
ALTALINK 15-Mar-22 07:00 20-Mar-22 18:30 5.48 Days
Continuous		 602s745N (745L) - GOI, 745L (602s Cold Creek - 745AL tap) Breaker outage to replace the 745L line protections, and install a new breaker fail protection for 745L.  
ATCO 16-Mar-22 09:00 17-Mar-22 16:00 31 Hours
Continuous		 766S 901T, 766s 901T (766s Nevis) Install new 9S4 Nevis RAS panel. Outage required on 901T for new CT input wiring.  
ALTALINK 21-Mar-22 09:30 22-Mar-22 18:00 1.35 Days
Continuous		 1027L (410s-430s) – GOI, 1027L (410s Josephburg - 430s Ursus) Migration of alarms, status and control of breakers 410s152 and 410s252. Migration of control and status of MOD 410s1027. Functioning of these devices will be required. Migration of alarms, metering and controls to protections L1/A21/79 and L1/B21. Migration and function testing of CVT1 Alarms  
ALTALINK 21-Mar-22 12:00 21-Mar-22 15:30 3.5 Hours
Daily		 61s202X (202L) – GOI, 202L (61s Lodgepole - 62s Brazeau) Breaker maintenance including 1st trip testing.  
ALTALINK 21-Mar-22 12:00 24-Mar-22 18:00 3.25 Days
Continuous		 1206L (89s - 12s) - GOI, 1206L (12s Heartland - 89s Ellerslie) Component Replacements on 1206L ( Structure Range 2-193)  
ALTALINK 21-Mar-22 12:15 25-Mar-22 17:45 4.23 Days
Continuous		 225s15 (CHD-1) GOI, 225s 15 (225s Magrath) Replacing A&B line protection during outage  
ALTALINK 21-Mar-22 14:00 21-Mar-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 22-Mar-22 08:30 22-Mar-22 11:30 3 Hours
Daily		 62s201 (801L) – GOI, 801L (62s Brazeau - 294s Brazeau Outlet Works) Breaker maintenance including 1st trip testing. Replace tank heater  
ALTALINK 22-Mar-22 08:30 22-Mar-22 13:00 4.5 Hours
Daily		 17s10 - GOI, 17s 10 (17s Benalto) 1st trip and PRC5 maintenance  
ALTALINK 22-Mar-22 08:30 22-Mar-22 17:30 9 Hours
Daily		 103s21 (613L) GOI, 613L (103s Goose Lake - 396s Pincher Creek) 138kV Switch Maintenance AB-BC
ALTALINK 22-Mar-22 12:30 22-Mar-22 15:30 3 Hours
Daily		 62s202 (202L) – GOI, 202L (61s Lodgepole - 62s Brazeau) Breaker maintenance including 1st trip testing.  
ALTALINK 22-Mar-22 13:00 22-Mar-22 17:30 4.5 Hours
Daily		 17s8 - GOI, 17s 8 (17s Benalto) 1st trip and PRC5 maintenance  
ALTALINK 23-Mar-22 07:00 24-Mar-22 18:00 1.46 Days
Continuous		 1120L (410s-108s) – GOI, 1120L (108s Amelia - 410s Josephburg) Migration of alarms, status and control of breakers 410s352 and 410s452. Migration of control and status of MOD 410s1120. Functioning of these devices will be required. Migration of alarms, metering and controls to protections L1/A21 and L1/B21/79. Migration and function testing of CVT2 Alarms  
ALTALINK 23-Mar-22 08:30 23-Mar-22 17:30 9 Hours
Daily		 103s994 (994L) GOI, 994L (103s Goose Lake - 312s Fidler) 240kV Switch Maintenance  
ALTALINK 24-Mar-22 08:30 24-Mar-22 17:30 9 Hours
Daily		 103s14 (955L) GOI, 955L (59s Peigan - 103s Goose Lake) 240kV Switch Maintenance  
EPCOR, ALTALINK 28-Mar-22 07:00 01-Apr-22 17:00 4.42 Days
Continuous		 Castledowns 920LE Bay @ Castledowns E557S, 920L (71s Lamoureux - 557s Castle Downs) Castledowns 920LE Bay Op-Checks, P&C Maintenance  
ATCO 28-Mar-22 09:00 04-Apr-22 16:00 7.29 Days
Continuous		 7L80, 7L80 (733s Simonette - 740s H.R.Milner) Changing Arms and Pole Repairs  
ALTALINK 28-Mar-22 12:00 31-Mar-22 18:00 3.25 Days
Continuous		 1212L (89s - 12s) - GOI, 1212L (12s Heartland - 89s Ellerslie) Component Replacements on 1212L ( Structure Range 20-194)  
EPCOR, ALTALINK 04-Apr-22 07:00 08-Apr-22 17:00 4.42 Days
Continuous		 Castledowns 920LW Bay @ Castlesdowns E557S, 920L (37s North Calder - 557s Castle Downs) Castledowns 920LW Bay Op-Checks, P&C Maintenance  
EPCOR 04-Apr-22 07:00 08-Apr-22 17:00 4.42 Days
Continuous		 TX3 @ Jasper Terminal E805S, 805s T3 (805s Jasper) Jasper protection upgrade cutovers and **15kV BUS 3 PT Replacement**  
EPCOR 04-Apr-22 07:00 09-Apr-22 17:00 5.42 Days
Continuous		 D2403 @ Dome E665S, 665s D2403 (665s Dome) Dome D2403 Bay Doble and Breaker Maintenance  
SUNCOR 04-Apr-22 08:00 07-Apr-22 18:00 3.42 Days
Continuous		 29EDD-65 Edd65Sub 29EDD65 ;29PT-259 SYSTEM;PM 5y line 29PL9-12  
SUNCOR 04-Apr-22 08:00 07-Apr-22 18:00 3.42 Days
Continuous		 29EDD-65 Edd65Sub 29PL9-13; 29PT-249;MTCE & TEST;(A)5Y  
SUNCOR 04-Apr-22 08:00 09-Apr-22 18:00 5.42 Days
Continuous		 29PL9-12, 29PL9-12 (29EDD-34 - 29EDD-65) 29EDD65 ;29PT-259 SYSTEM;PM 5y line 29PL9-12  
ALTALINK 04-Apr-22 11:00 08-Apr-22 19:00 4.33 Days
Continuous		 310P 240kV B&C Bus, T30, T36&974L - GOI, 310p 240kV Bus C (310p Sundance), 310p 240kV Bus B (310p Sundance), 310p T30 (310p Sundance), 310p T36 (310p Sundance), 974L (39s Bickerdike - 310p Sundance) First trip on 310P2552, 310P2252, 310P1952, 310P1352, 310P1052, 310P752, 310P452, 310P152, & 310P2852. Replace 310P1A and 310P1B. Maintain 240kV bus switches. Replace T36 25kV bushing. Replace 310P252 grading caps & maintenance.  
ALTALINK 04-Apr-22 12:00 07-Apr-22 18:00 3.25 Days
Continuous		 1212L (89s - 12s) - GOI, 1212L (12s Heartland - 89s Ellerslie) Component Replacements on 1212L ( Structure Range 20-194)  
ALTALINK, Lethbridge 05-Apr-22 07:30 06-Apr-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 05-Apr-22 07:30 06-Apr-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 09-Apr-22 08:00 15-Apr-22 17:00 6.38 Days
Continuous		 9L46, 9L46 (932s Pemukan - 959s Lanfine) Sharp Hills Project
Outage for Line termination to 363S Sedalia on 9L46		  
EPCOR 11-Apr-22 07:00 11-Apr-22 17:00 10 Hours
Continuous		 CDDS7 @ Castledowns E557S, 557s T2 (557s Castle Downs) Castledows CDDS7 Disconnect Maintenance  
EPCOR 11-Apr-22 07:00 15-Apr-22 17:00 4.42 Days
Continuous		 TX4 @ Jasper Terminal E805S, 805s T4 (805s Jasper) Jasper protection upgrade cutovers  
ATCO 11-Apr-22 08:00 14-Apr-22 16:00 3.33 Days
Continuous		 951S 900BS1 951S construction for 240kv expansion - 9L162 & 9L193 addition
Connect 910A to 900BS1
Impact: 900BS1 OOS, BKR 901 OOS, BKR 904 OOS, BKR 907 OOS, 920C OOS		  
ALTALINK 11-Apr-22 11:00 13-Apr-22 17:00 2.25 Days
Continuous		 67s T1 (Tx18666) GOI, 67s T1 (67s Stirling) Perform maintenance , doble, SFRA, AMP replacement  
ALTALINK 11-Apr-22 12:30 13-Apr-22 17:30 2.21 Days
Daily		 37s82 GOI, 37s 82 (37s North Calder) First trip and PRC5 maintenance, replace AC receptacle in cabinet  
ALTALINK 12-Apr-22 07:00 19-Apr-22 16:00 7.38 Days
Continuous		 39s T1, 138kV B1, 240B1, 974L, 1084L, 1168L, 1, 39s T1 (39s Bickerdike), 974L (39s Bickerdike - 310p Sundance), 39s 138kV Bus 1 (39s Bickerdike), 39s 240kV Bus 1 (39s Bickerdike) Complete relocation of 974L (close open point ‘L’) Terminate 1084L, Terminate 1168L (close open point ‘M’) Complete breaker fail, T1 trip testing from/to 39s1552, 39s26, 39s33, 39s38, 39s152, 39s1052  
ATCO 12-Apr-22 08:00 15-Apr-22 17:00 3.38 Days
Continuous		 801S 901T, 801s 901T (801s Anderson) WHEATLAND PROJECT
801S Anderson Sub Protection Upgrade		  
SUNCOR 13-Apr-22 08:00 19-Apr-22 18:00 6.42 Days
Continuous		 29EDD-71 29EDD71;29PT-430;PM 5y  
EPCOR, ALTALINK 19-Apr-22 09:30 23-Apr-22 17:00 4.31 Days
Continuous		 1059L and TX1 @ East Industrial E52S and East Edmonton 38S, 1059L (38s East Edmonton - EP 803s Lambton) East Industrial 1059L CT/Arrestor/TX1 Doble, EDS1 Disconnect Maintenance  
ALTALINK 19-Apr-22 11:30 21-Apr-22 17:30 2.25 Days
Continuous		 138s1652 (R1) GOI, 138s 1652 (138s Windy Flats) Maintenance, doble (R1). 138kV Breaker Maintenance (138s1652)  
ATCO 20-Apr-22 08:00 22-Apr-22 16:00 2.33 Days
Continuous		 9L74, 888S 905, 888S 906, 9L74 (888s Dover - 960s Birchwood Creek) Cut in new CT and PT circuit extension to the new RAS relays, complete SCADA terminations.  
ALTALINK, ENMAX 21-Apr-22 08:00 21-Apr-22 17:30 9.5 Hours
Daily		 74s30 (23.80L) - GOI, 23.80L (74s Janet - ENMAX 23) Repair switch  
ATCO 24-Apr-22 08:00 27-Apr-22 17:00 3.38 Days
Continuous		 766S 901T, 766s 901T (766s Nevis) WHEATLAND PROJECT
766S Nevis Sub Protection Upgrade		  
EPCOR 25-Apr-22 07:00 26-Apr-22 17:00 1.42 Days
Continuous		 BDS18 and Bellamy TX2 @ Bellamy E814S and Rossdale, 814s T2 (814s Bellamy) BDS18 Repair/Maintenance, Doble Bellamy TX2 PT  
EPCOR 25-Apr-22 07:00 29-Apr-22 17:00 4.42 Days
Continuous		 1098L, J2407, PM2401, PM2402 @ Jasper Terminal E805S and Poundmaker, 1098L (805s Jasper - Poundmaker) Jasper 1098L CVT LCR and Poundmaker/Jasper 1098L Zone Doble and PMDS2/PMDS3/PMDS9 Disconnect Maintenance  
ALTALINK 25-Apr-22 11:30 28-Apr-22 17:00 3.23 Days
Continuous		 74s2452 GOI, 74s 2452 (74s Janet) Perform maintenance on s2452 (PRC5)  
ALTALINK 25-Apr-22 12:00 28-Apr-22 18:00 3.25 Days
Continuous		 288s T2 TX18900 - GOI, 288s T2 (288s Wolf Creek) First trip PRC5 maintenance, fix oil leaks, doble  
EPCOR 02-May-22 07:00 06-May-22 17:00 4.42 Days
Continuous		 1203 Bay @ Genesee 330P, 330p 1203 (330p Genesee) Genesee 1203 Bay CT Doble, Breaker Maintenance  
ATCO 02-May-22 08:00 15-May-22 00:17 12.68 Days
Continuous		 7L01, 7L01 (813s Little Smoky - 881s Sturgeon) 813S Little Smoky Rebuild
BKR 711 and 712 P&C wiring, remove old panel 8G, set up new panel 7P2, prep work
Relay programming and functionality
Commission control, alarms and status		  
EPCOR, ALTALINK 02-May-22 09:30 06-May-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) East Industrial 908L CVT/Arrestor/TX2 Doble and EDS2/E2T2 Maintenance  
ALTALINK 03-May-22 09:30 05-May-22 17:30 2.33 Days
Continuous		 138s1752 (R2) GOI, 138s 1752 (138s Windy Flats) Maintenance, doble (R1). 138kV Breaker Maintenance (138s1652)  
SUNCOR 04-May-22 06:00 17-May-22 18:00 13.5 Days
Continuous		 29EDD-5 29Edd-5 29EDD-5 / 29PL6-7 Phase A Repair
Install RFCT for 2PL6-7 at 30EDD-1		  
EPCOR 09-May-22 07:00 13-May-22 17:00 4.42 Days
Continuous		 1206 Bay @ Genesee 330P, 330p 1206 (330p Genesee) Genesee 1206 Bay CT Doble, Breaker Maintenance  
EPCOR 09-May-22 07:00 13-May-22 17:00 4.42 Days
Continuous		 TX1 @ Jasper Terminal E805S, 805s T1 (805s Jasper) Surge Arrestor Replacement  
ATCO 11-May-22 07:00 11-May-22 17:00 10 Hours
Continuous		 7L68, 7L68 (730s Rycroft - 811s Clairmont Lake) SVC addition and 144 kv bus rebuild.
Install new bypass switch 7L68D3		  
EPCOR 16-May-22 07:00 20-May-22 17:00 4.42 Days
Continuous		 1207 Bay @ Genesee 330P, 330p 1207 (330p Genesee) Genesee 1207 Bay CT Doble, Breaker Maintenance  
EPCOR 16-May-22 07:00 03-Jun-22 17:00 18.42 Days
Continuous		 240BA2 @ Bellamy E814S and Argyll Transfer Station E629S, 240BA2 (629s Argyll Transfer Station - 814s Bellamy) BA2 Oil Degassing  
ATCO 16-May-22 08:00 29-May-22 17:00 13.38 Days
Continuous		 7L46, 7L46 (813s Little Smoky - 845s Big Mountain) 813S Little Smoky Rebuild
Replace 705CT and 706CT junction boxes
705, 706 P&C wiring, prep work
Relay programming and functionality
Commission control, alarms and status		  
ATCO 16-May-22 09:00 23-May-22 17:30 7.35 Days
Continuous		 790S 704, 790S 703T Replace 1 phase on 790S 704, 790S 703T maintenance  
SUNCOR 23-May-22 06:00 29-May-22 18:00 6.5 Days
Continuous		 29PL9-12, 29PL9-12 (29EDD-34 - 29EDD-65) 29EDD34;29PL9-12 SYSTEM;PM 5y,10y  
SUNCOR 30-May-22 06:00 05-Jun-22 18:00 6.5 Days
Continuous		 29PL9-13, 29PL9-13 (29EDD-34 - 29EDD-65) 29EDD34;29PL9-13 SYSTEM;PM 5y,10y  
ATCO 30-May-22 08:00 12-Jun-22 17:00 13.38 Days
Continuous		 7L45, 7L45 (813s Little Smoky - 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		  
EPCOR, ALTALINK 30-May-22 09:30 03-Jun-22 17:00 4.31 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  
EPCOR 06-Jun-22 07:00 10-Jun-22 17:00 4.42 Days
Continuous		 12TC1 Zone @ Genesee 330P, 330P 12TC1 (330p Genesee) Genesee 12TC1 Zone Doble  
EPCOR 06-Jun-22 07:00 11-Jun-22 17:00 5.42 Days
Continuous		 J2404 Bay @ Jasper Terminal E805S, 805s J2404 (805s Jasper) Jasper J2404 Bay Doble and Breaker Maintenance  
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  
ATCO 13-Jun-22 08:00 26-Jun-22 17:00 13.38 Days
Continuous		 7L54, 7L54 (794s Valleyview - 813s Little Smoky) 813S Little Smoky Rebuild813S Little Smoky Rebuild
BKR 703 and 704 P&C wiring, remove old panel 7G, set up new panel 7P4, prep work
Relay programming and functionality
Commission control, alarms and status		  
ATCO 15-Jun-22 07:00 28-Jul-22 17:00 43.42 Days
Continuous		 972S 900BS2, 9L16, 9L16 (755s Cordel - 972s Tinchebray), 972s 240kV Bus 900BS2 (972s Tinchebray) Outage on 907B and 908A for the installation and commissioning of 907 and 907CT  
SUNCOR 20-Jun-22 06:00 26-Jun-22 18:00 6.5 Days
Continuous		 30EDD-2 30EDD2;30PK-10 SYSTEM;PM 5y  
EPCOR, ALTALINK 20-Jun-22 07:00 20-Jun-22 17:00 10 Hours
Continuous		 1044L @ Jasper Terminal E805S and Petrolia E816S, 1044L (805s Jasper - 816s Petrolia) Jasper 1044L Line Arrestor Doble  
EPCOR 27-Jun-22 07:00 29-Jun-22 17:00 2.42 Days
Continuous		 C2408 Bay @ Cloverbar E987S, 987s C2408 (987s Clover Bar), 987s T2 (987s Clover Bar) Cloverbar C2408 Bay CVT Doble and Breaker Maintenance  
EPCOR 27-Jun-22 07:00 30-Jun-22 17:00 3.42 Days
Continuous		 500kV BUS1 @ Genesee 330P, 330p 500kV Bus 1 (330p Genesee) Genesee 1201A/1204A/1207A/12TC1D/12TC1GS Disconnect Maintenance  
ATCO 29-Jun-22 07:00 01-Jul-22 17:00 2.42 Days
Continuous		 766S 701, 766S 901T, 766s 901T (766s Nevis), 766s 701 (766s Nevis) RAS modifications for the Pattern Lanfine WAGF project  
EPCOR 04-Jul-22 07:00 08-Jul-22 17:00 4.42 Days
Continuous		 C2406 Bay @ Cloverbar E987S, 987s C2406 (987s Clover Bar) Cloverbar C2406 CT/Breaker Doble and Breaker Maintenance  
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  
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) 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  
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)  
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  
ALTALINK 15-Jul-22 07:00 05-Aug-22 18:00 21.46 Days
Continuous		 20sT1 (Tx 18459) GOI, 20s T1 (20s Ghost) Alignment with TAU Outage to replace Transformer  
ATCO 25-Jul-22 08:00 07-Aug-22 17:00 13.38 Days
Continuous		 7L40, 7L40 (733s Simonette - 813s Little Smoky) 813S Little Smoky Rebuild
BKR 709 and 710 P&C wiring, remove old panels 3G and 4G, set up new panel 7P1, prep work
Relay programming and functionality
Commission control, alarms and status		  
ALTALINK 26-Jul-22 07:00 29-Jul-22 18:00 3.46 Days
Continuous		 20s 138kV BUS South GOI, 113L (20s Ghost - 33s Spray), 150L (20s Ghost - 150AL tap), 859L (20s Ghost - AML 793s Horse Creek), 20s 138kV South Bus (20s Ghost) Replace CVT1 and connect to new distribution. Complete T1 CT contributions and trip testing new bus protection, Trip testing Cutover MOD 20s153 to new building and controls  
ATCO 27-Jul-22 07:00 28-Jul-22 17:00 1.42 Days
Continuous		 972S 900BS2, 9L16, 9L16 (755s Cordel - 972s Tinchebray), 972s 240kV Bus 900BS2 (972s Tinchebray) Outage on 9L16 to cut the line over to the new bay  
ATCO 27-Jul-22 07:00 31-Jul-22 17:00 4.42 Days
Continuous		 7L760, 767S 702, 7L760 (767s Oyen - 7L760D2), 767s 702 (767s Oyen) RAS modifications for the Pattern Lanfine WAGF project  
ATCO 29-Jul-22 07:00 03-Aug-22 17:00 5.42 Days
Continuous		 9L177, 9L177 (620s Goldeye - 972s Tinchebray) Installing new 240Kv Bay (connect 907B to BUS 1) for 620S Goldeye substation connection  
ALTALINK 29-Jul-22 08:00 29-Jul-22 16:00 8 Hours
Daily		 20s 138kV BUS & Station GOI, 20S Ghost, 20s 138kV South Bus (20s Ghost), 20s 138kV North Bus (20s Ghost) Complete Cutover of MOD 20s14 and functional testing  
ATCO 02-Aug-22 00:00 13-Aug-22 00:00 11 Days
Continuous		 720S 901T, 720s 901T (720s Wabasca) 720S Wabasca 901T Replacement, Load transferred to 902T  
ATCO 02-Aug-22 08:00 15-Aug-22 16:00 13.33 Days
Continuous		 801S 903, 801S 902, 9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Relay Settings changes		  
ATCO 02-Aug-22 08:00 15-Aug-22 16:00 13.33 Days
Continuous		 972S 901, 972S 902, 9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Relay Settings Changes		  
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  
ATCO 07-Aug-22 08:00 15-Aug-22 16:00 8.33 Days
Continuous		 9L59, 9L59 (801s Anderson - 972s Tinchebray) TransAlta GARDEN PLAIN PROJECT
Line 9LA59 tie-in to Garden Plain Sub		  
SUNCOR 08-Aug-22 06:00 14-Aug-22 18:00 6.5 Days
Continuous		 29EDD-3 29Edd-3 transforme Line protection upgrade and 29PT-5 replace PRD  
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 LTO 908 & 909 52b open status and line
MOD 9L29D2 89b open status @ 946S and LTO 901
open status and line MOD, 9L29D1 open status @ 963S,
end-to-end testing		  
ATCO 08-Aug-22 08:00 21-Aug-22 17:00 13.38 Days
Continuous		 7L32, 7L32 (813s Little Smoky - 862s South Bezanson) 813S Little Smoky Rebuild
BKR 701 and 702 P&C wiring, prep work
Relay programming and functionality
Commission control, alarms and status		  
EPCOR, ALTALINK 08-Aug-22 09:30 13-Aug-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  
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  
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
relays and DTT to 770S Three Hills (option 1) or 1-114S
Ghost Pine (option 2)		  
ATCO 22-Aug-22 08:00 04-Sep-22 17:00 13.38 Days
Continuous		 7L90, 7L90 (741s Fox Creek - 813s Little Smoky) 813S Little Smoky Rebuild
BKR 702 and 703 P&C wiring, remove old panels 1G and 2G, prep work
Relay programming and functionality
Commission control, alarms and status		  
EPCOR, ALTALINK 22-Aug-22 09:30 26-Aug-22 17:00 4.31 Days
Continuous		 1045L Zone and J2407 @ Jasper Terminal E805S and Sundance 310P, 1045L (310p Sundance - 320p Keephills - 805s Jasper) Jasper 1045L Zone Doble and J2407 Doble and Maintenance  
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  
ATCO 05-Sep-22 08:00 24-Sep-22 17:00 19.38 Days
Continuous		 813S 901T, 813s 901T (813s Little Smoky) 813S Little Smoky Rebuild
Remove panels 3K,4K - install new panel 9T1 - BKR 901, 701, 705, 718 P&C wiring, prep work
Replace 500PT disconnect assembly
Relay programming and functionality
Commission control, alarms and status		  
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 12-Sep-22 07:00 18-Sep-22 17:00 6.42 Days
Continuous		 TX5 and 240CV5 Zone @ Victoria E511S and Castledowns E557S, EP 511s Victoria T5 (EP 511s Victoria), CV5 (EP 511s Victoria - 557s Castle Downs) Victoria TX5 and CV5 Zone Op-Checks, P&C Maintenance  
SUNCOR 14-Sep-22 08:00 19-Sep-22 18:00 5.42 Days
Continuous		 29PL9-13, 29PL9-13 (29EDD-34 - 29EDD-65) 29PL9-13; 29PT-249;MTCE & TEST;(A)5Y  
ATCO 26-Sep-22 08:00 19-Oct-22 17:00 23.38 Days
Continuous		 813S 902T, 813s 902T (813s Little Smoky) 813S Little Smoky Rebuild
Remove panels 1K,2K - install new panel 9T2 - BKR 904, 710, 711, 713, 717 P&C wiring, prep work
Replace cap bank protection relays
Replace 501PT disconnect assembly
Relay settings update for capacitor banks 714C, 715C, 716C
Relay programming and functionality
Commission control, alarms and status		  
ATCO 22-Oct-22 07:00 02-Nov-22 17:00 11.42 Days
Continuous		 7L129, 7L129 (710s Vermilion - 918s Bauer) Re stringing conductor  
ATCO 24-Oct-22 08:00 06-Nov-22 17:00 13.42 Days
Continuous		 9L11, 9L11 (813s Little Smoky - 834s Wesley Creek) 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 07-Nov-22 08:00 20-Nov-22 17:00 13.38 Days
Continuous		 9L05, 9L05 (809s Louise Creek - 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 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  
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 7L32PT3  
ALTALINK 16-Nov-22 07:15 16-Nov-22 12:45 5.5 Hours
Daily		 20sT1 (Tx 18459) GOI Trip testing of 20s30, 20s2, 20s3, and 20s4 from relocated A87/138B Bus protection  
ATCO 21-Nov-22 08:00 04-Dec-22 17:00 13.38 Days
Continuous		 9L02, 9L02 (809s Louise Creek - 813s Little Smoky) "Louise Creek Rebuild project - On Oct 24 - Breaker 903 will remain open overnight as this breaker will be part of the following GOI on 9L40 2-50614. Reason: Protection on this breaker is only partially upgraded at this point.
Wiring for 903/910BF relays.
CT ratio changes.
Relay programming and functionality.
Commission control, alarms and status.
Blocking procedures for BF protections."		  
ATCO 05-Dec-22 08:00 18-Dec-22 17:00 13.38 Days
Continuous		 813S SVC, 813s SVC (813s Little Smoky) 813S Little Smoky Rebuild
Cutover new filter bank relays, P&C wiring
Relay programming and functionality
Commission control, alarms and status		  
ATCO 27-Jan-23 08:00 07-Feb-23 17:00 11.38 Days
Continuous		 75-PLH-902, 75-PHL-902 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
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 08-Feb-23 08:00 19-Feb-23 17:00 11.38 Days
Continuous		 75-PLH-901, 849s 907 (849s Joslyn Creek), 75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
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 20-Feb-23 08:00 23-Feb-23 17:00 3.38 Days
Continuous		 9L66, 9L66 (847s Muskeg River - 849s Joslyn Creek) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing line 9L66 at tap point and connect new line segment to 838S Horizon Expansion
Disconnect existing 9L66 from Joslyn 849S
Commissioning upgrade - relay settings @ 847S		  
ATCO 24-Feb-23 08:00 27-Feb-23 17:00 3.38 Days
Continuous		 9L32, 9L32 (849s Joslyn Creek - 2005s Secord) ATCO 9L32-9L66 CNRL- Horizon Project
Disconnect existing line 9L32 at tap point and connect new line segment to 838S Horizon Expansion
Disconnect existing 9L32 from Joslyn 849S
Commissioning upgrade - relay settings @ 2005S		  
ATCO 21-Mar-23 08:00 22-Mar-23 17:00 1.38 Days
Continuous		 7L53, 7LA53, 7L53 (700s Bonnyville - 706s Irish Creek) Cold Lake Area Energy Centre Project
7LA53 (New Line T-Tap)
1064S Garnier Lake Sub (Customer)

Build 6km 7LA53 144kV from T-Tap to 1064S Garnier Lake Substation.
Remote end protection upgrades		  
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		  
SUNCOR 01-May-23 08:00 14-May-23 18:00 13.42 Days
Continuous		 29EDD-1, 29EDD-1 Millennium N260B1 + Relays, 29CVT-11, 29PS-72/76.
29EDD-1S1/1S7/1S13/1S452/1S152 + Relays,
952-101/104 + Controller + Relays
assets		  
SUNCOR 01-May-23 08:00 30-May-23 18:00 29.42 Days
Continuous		 29EDD-94, 29EDD-94 Voyageur 29EDD94; Breaker MTCE & TEST, PM 10y on breakers 29-452-6704, 29-452-6703, 29-452-6702, 29-452-8302, 29-452-8303, 29-452-8304, 29-452-8407, 29-452-8406, 29-452-8405, 29-452-8404, 29-452-8403, 29-452-8402, 29-452-8502, 29-452-8503,29-452-8504, 29-452-8505, 29-452-8506, 29-452-8507  

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: 2022-01-05   2:28:46 PM


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