Alberta Electric System Operator
System Co-ordination Plan
2022-05-26 to 2022-06-03
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 31-Dec-23 16:00 EPCOR IO C2 (Rossdale) forced outage 1,913.38 Days
Continuous
 
24-Oct-18 01:13 31-Dec-23 16:00 EPCOR IO C1 (Rossdale) forced outage 1,894.66 Days
Continuous
 
01-Jan-21 08:00 04-Jan-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 30EDD-200 733.42 Days
Continuous
 
02-Jan-21 08:00 05-Jan-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-181
733.42 Days
Continuous
 
05-Jan-21 08:00 01-Jun-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29PT-69
877.38 Days
Continuous
 
24-Jan-21 08:00 07-Jan-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-161
713.42 Days
Continuous
 
02-Feb-21 08:00 10-Jan-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-221
707.42 Days
Continuous
 
24-Feb-21 08:00 11-Jan-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-211; substation ground test; PM 5y - 34.5kV 686.42 Days
Continuous
 
01-Mar-21 08:00 03-Feb-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-221 ;29PT-605 system 704.42 Days
Continuous
 
01-Mar-21 08:00 04-Feb-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-161; 29PT-582 system 705.42 Days
Daily
 
01-Mar-21 08:00 05-Feb-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-171; 29PT-600 system 706.42 Days
Daily
 
03-Dec-21 08:00 30-Jun-22 17:00 ATCO TE 7L84 (722s Crystal Lake - 749s Flyingshot Lake) emergency - relay settings changes at 722s and 749s 209.33 Days
Continuous
 
09-Dec-21 13:00 31-Aug-22 17:00 ATCO Outage 863s 902T (863s Paintearth) forced outage and troubleshooting 265.13 Days
Continuous
 
01-Jan-22 08:00 06-Mar-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 30EDD-200 429.42 Days
Daily
 
01-Jan-22 08:00 07-Mar-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 30EDD-200 430.42 Days
Daily
 
01-Jan-22 08:00 19-Oct-22 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-9 291.38 Days
Daily
 
01-Jan-22 08:00 09-Nov-22 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD-8 312.42 Days
Daily
 
24-Jan-22 07:00 14-Jun-22 17:00 EPCOR Outage T1 (Garneau) provide clearances for Tx1 replacement 141.38 Days
Continuous
 
25-Jan-22 07:00 01-Jun-22 17:00 EPCOR TE EP 511s Victoria relay blocking required on 'A' and 'B' protections for relay maintenance 127.38 Days
Daily
 
07-Feb-22 12:00 31-May-22 18:00 ATCO TE 951s 240kV 900BS2 (951s Thickwood Hills) wiring and CT changes for the 87BA/900BS2 and 87BB/900BS2 113.21 Days
Continuous
 
07-Feb-22 12:00 31-May-22 18:00 ATCO TE 951s 240kV 900BS1 (951s Thickwood Hills) addition of two new relays for 900BS1 113.21 Days
Continuous
 
05-Mar-22 19:00 21-Jun-22 07:00 ALTALINK Outage 345s T1 (345s Hornbeck) transitioning from a CI to GOI 107.46 Days
Continuous
 
14-Mar-22 14:00 30-Jun-22 18:00 ATCO TE 813s SVC (813s Little Smoky) emergency real time failed relay 108.17 Days
Continuous
 
18-Mar-22 16:30 20-Jun-22 23:59 NWE, BHE Canada, BHE Outage Marias South Series Capacitor, North Series Capacitor (BHE Hay Lake) repair series capacitor bypass breaker 94.31 Days
Continuous
AB-MATL
10-Apr-22 08:00 29-Nov-22 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29PL-3 233.46 Days
Daily
 
12-Apr-22 12:00 20-Jun-22 23:59 NWE, BHE Canada Outage Marias South Series Capacitor urgent- replace the Marias series capacitor bypass breaker 2385 Phase B 69.5 Days
Continuous
AB-MATL
18-Apr-22 08:00 29-May-23 17:00 ATCO TE 813s Little Smoky 144kV Bus 1, 813s Little Smoky 144kV Bus 2, 813s Little Smoky 240kV Bus 1, 813s Little Smoky 240kV Bus 2 813S Little Smoky rebuild: cutover wiring to the new relays as their corresponding apparatus are out of service 406.38 Days
Continuous
 
18-Apr-22 08:00 29-May-23 17:00 ATCO TE 813s Little Smoky 813S Little Smoky rebuild: cutover wiring to the new relays as their corresponding apparatus are out of service 406.38 Days
Continuous
 
19-Apr-22 08:00 29-May-23 16:00 ATCO TE 813s Little Smoky protection relay work 405.33 Days
Continuous
 
20-Apr-22 08:30 04-Jun-22 18:00 ALTALINK Outage 38s C1 (38s East Edmonton), 38s 3052 (38s East Edmonton) breaker maintenance and testing 45.4 Days
Daily
 
25-Apr-22 08:00 03-Jun-22 16:00 ENMAX Outage 2.82L (ENMAX 2 - ENMAX 5) replace circuit breaker 39.33 Days
Continuous
 
25-Apr-22 08:00 03-Jun-22 16:00 ALTALINK IO 2.82L (C2s-C5s) Enmax - Info 5sub TRV Project. Replace circuit breaker 39.33 Days
Continuous
 
27-Apr-22 17:00 27-Jun-22 07:00 ALTALINK Outage 165s T1 (165s Gainford) replacing T1 with a new transformer 60.58 Days
Continuous
 
28-Apr-22 17:30 07-Jul-22 17:30 ALTALINK Outage 370s T1 (370s North Lethbridge) Install breaker foundation and breaker between 370s3 and T1 70 Days
Continuous
 
02-May-22 08:00 30-Sep-22 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29PP-901 151.42 Days
Daily
 
02-May-22 09:00 27-May-22 17:00 ATCO TE 709s RTU/SCADA (709s Vegreville) downloading RTU controls 25.33 Days
Continuous
 
04-May-22 07:00 24-Jun-22 15:00 ALTALINK Outage 250p 11 (250p Bighorn Plant) maintenance 51.33 Days
Continuous
 
04-May-22 09:00 31-May-22 15:00 TRANSCANADAP TE 910s RTU/SCADA (910s Excel) test channels 27.25 Days
Continuous
 
12-May-22 18:00 13-Jun-22 06:00 ALTALINK IO 39s NEW 240kV Gear - GOI continued 240 kV breakers installation, continued 1168L/974L/973L construction 31.5 Days
Continuous
 
12-May-22 18:00 30-Oct-22 12:00 ALTALINK IO 1168L NEW (39s-Open Point 'F') - GOI continued construction 170.75 Days
Daily
 
12-May-22 18:00 29-Jun-22 17:00 ALTALINK IO 974L NEW (39s-Open Point 'Q') - GOI continued construction 47.96 Days
Continuous
 
13-May-22 08:00 03-Jun-22 16:00 ENMAX Outage 3.82L (ENMAX 3 - ENMAX 8) upgrading storm lines in the Sunnyside area 21.33 Days
Continuous
 
15-May-22 07:00 27-May-22 17:30 ALTALINK TE 39s RTU/SCADA (39s Bickerdike) Cascade project - update HMI, SLD, RTU 12.44 Days
Daily
 
15-May-22 12:01 12-Jun-22 12:00 ATCO Outage 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 28 Days
Continuous
 
16-May-22 07:00 03-Jun-22 17:00 EPCOR, ALTALINK Outage 240BA2 (629s Argyll Transfer Station - 814s Bellamy), 1056L (89s Ellerslie - 629s Argyll Transfer Station) BA2 oil degassing 18.42 Days
Continuous
 
16-May-22 07:00 03-Jun-22 17:00 ALTALINK IO 1056L (89s-E629s) EPCOR - Advice BA2 Oil degassing 18.42 Days
Continuous
 
16-May-22 07:00 26-May-22 17:00 EPCOR Outage 72CK13 (987s Clover Bar - Kennedale), K722 (Kennedale), T1 (Kennedale), 987s CK726 (987s Clover Bar) line arrestors both ends doble disconnect maintenance and CK726 breaker maintenance 10.42 Days
Continuous
 
16-May-22 08:00 13-Jun-22 16:00 ATCO TE 9L05 (809s Louise Creek - 813s Little Smoky) 908PTX1 will for OOS to wire new circuit and removing existing 902T transducer metering circuit 28.33 Days
Continuous
 
16-May-22 10:00 27-May-22 16:00 ATCO Outage 743s 702T (743s Sarah Lake) testing breaker 706 and 502 status, testing 502VR 11.25 Days
Continuous
 
16-May-22 12:00 09-Jun-22 12:00 ATCO Outage 951s 908 (951s Thickwood Hills) addition of NEW bus on 900BS2, construction, commissioning 24 Days
Continuous
 
19-May-22 07:30 28-May-22 18:00 CNRL Outage 842s 75-TR-7701 (842s Horizon Upgrading), 842s 75-TR-4701 (842s Horizon Upgrading), 75-PLH-903 (838s Horizon Mining - 842s Horizon Upgrading) 5 year PM (breakers, PRC-005) 9.44 Days
Continuous
 
19-May-22 15:37 26-May-22 17:00 BHE Canada Outage MATL (120s Picture Butte - Montana) forced outage 7.06 Days
Continuous
AB-MATL
21-May-22 07:30 30-May-22 18:00 CNRL TE 838s Horizon Mining RTU/SCADA, 842s Horizon Upgrading RTU/SCADA upgrade to new RTU 9.44 Days
Continuous
 
22-May-22 18:00 29-Jun-22 06:00 ALTALINK IO 39s Bickerdike new 1135L (39s-1047s) continued construction 37.5 Days
Continuous
 
23-May-22 08:00 05-Jun-22 16:00 SUNCOR Outage 29EDD-1 29EDD1s1252 (29EDD-1 Millennium) breaker replacement 13.33 Days
Continuous
 
23-May-22 08:00 30-May-22 17:00 ATCO RB 7L82 (788s Hotchkiss - 855s Hamburg), 7L82 (853s Ring Creek - 855s Hamburg) walk up/climbing inspection 7.38 Days
Daily
 
23-May-22 08:00 02-Jun-22 17:00 SUNCOR Outage 635PT-1038 (635EDD-1001), 635EDD-1001 635-752-613 (635EDD-1001), 635EDD-1001 635-752-612 (635EDD-1001) regulatory maintenance on transformer, associated breakers 10.38 Days
Continuous
 
23-May-22 09:00 03-Jun-22 17:00 ALTALINK IO 5L96 (VAS-SEL) BCH - Info 5L96 replace defective insulators and install markerballs 11.33 Days
Continuous
 
23-May-22 09:00 03-Jun-22 17:00 BCH Outage 5L96 (Selkirk - Vaseux Lake) replace defective insulators and install markerballs, BC maintenance does not affect the Alberta ATC 11.33 Days
Continuous
AB-BC
24-May-22 07:00 23-Jun-22 18:00 ALTALINK Outage 133s 1 (133s Stelco Edmonton), 133s 2 (133s Stelco Edmonton) customer transformer work 30.46 Days
Continuous
 
24-May-22 07:30 03-Jun-22 17:00 ALTALINK TE 121s RTU/SCADA (121s Brooks) update the RTU and Substation HMI to add new ACC alarms 10.4 Days
Continuous
 
24-May-22 07:30 27-May-22 17:30 ALTALINK TE 99s RTU/SCADA (99s North St. Albert) update the RTU/HMI configuration to remove old GE D20 3.42 Days
Daily
 
24-May-22 08:00 26-May-22 17:00 ALTALINK Outage 1325L (510s Sunnybrook - AML 511s Crossings) correct bus pipe connections 2.38 Days
Continuous
 
24-May-22 08:00 26-May-22 17:00 ATCO, ALTALINK RB 12L41 (510s Sunnybrook - 939s Livock) AltaLink requires reclose blocked at 939S Livock for their outage at 510s A & B 500kV buses & 1325L 2.38 Days
Continuous
 
24-May-22 08:00 27-May-22 16:00 ENMAX Outage 11.4TR (ENMAX 11) transformer maintenance and testing 3.33 Days
Continuous
 
24-May-22 08:00 26-May-22 14:00 ALTALINK IO 250p Bighorn Plant Yearly site inspections and battery maintenance 2.25 Days
Daily
 
24-May-22 08:00 03-Jun-22 16:00 ENMAX Outage 24.2TR (ENMAX 24) 24 sub cable trench replacement, remove and re-install control cables 10.33 Days
Continuous
 
24-May-22 09:00 03-Jun-22 17:00 BCH Outage 5L96 (Selkirk - Vaseux Lake) flashed insulator replacement, BC maintenance does not affect the Alberta ATC 10.33 Days
Continuous
AB-BC
24-May-22 09:00 27-May-22 17:00 ATCO Outage 2082s 701T (2082s Dog Rib) 701T maintenance 3.33 Days
Continuous
 
24-May-22 09:00 30-May-22 16:00 ATCO Outage 834s 901T (834s Wesley Creek) installation of oil containment around 901T 6.29 Days
Continuous
 
24-May-22 09:01 30-May-22 17:30 ATCO Outage 846s Grand Centre, 7L24 (846s Grand Centre - 7LA24 tap) switching of 2000s into service 6.35 Days
Continuous
 
24-May-22 09:30 27-May-22 16:45 ATCO Outage 883s 701T (883s Gregoire) 701T leak mitigation, RTXP switch replacements 3.3 Days
Continuous
 
24-May-22 09:30 26-May-22 17:30 ATCO RB 7L794 (157s Lac La Biche - 819s Whitby Lake) AltaLink will be performing the below work on 794L 2.33 Days
Continuous
 
24-May-22 09:30 26-May-22 17:30 ALTALINK RB 794L (157s Lac La Biche - 819s Whitby Lake) replace burning arms/Insulation on 794L (structures 35, 75, 92) 2.33 Days
Continuous
 
24-May-22 10:00 26-May-22 18:00 ALTALINK, ATCO Outage 69s T5 (69s North Barrhead), 723L (69s North Barrhead - 724L tap), 7L230 (69s North Barrhead - 7L230 tap) maintenance 2.33 Days
Continuous
 
24-May-22 10:00 26-May-22 18:00 ATCO IO 7L230 this is required for the following Altalink work at 69s, maintenance on 69s50 & 69s20. 69s T5 25kV LAs addition and doble. salvage 69s11 2.33 Days
Continuous
 
24-May-22 10:00 26-May-22 17:30 ATCO Outage 755s 905 (755s Cordel) breaker testing 2.31 Days
Continuous
 
24-May-22 10:00 26-May-22 17:30 ALTALINK IO 953L/9L953 (A755s) 905 Breaker-Atco Info Atco will be maintaining 755s905 breaker 2.31 Days
Continuous
 
24-May-22 10:00 27-May-22 14:00 ATCO TE 743s RTU/SCADA (743s Sarah Lake) update/check new RTU configuration 3.17 Days
Continuous
 
24-May-22 10:00 26-May-22 18:00 ALTALINK TE 69s North Barrhead maintenance 2.33 Days
Continuous
 
24-May-22 10:30 27-May-22 17:00 ATCO TE 7L42 (716s Lloydminster - 751s Hill), 880s 701T (880s Briker), 880s Briker RTU/SCADA dial up network migrations and upgrade to station controller 3.27 Days
Continuous
 
24-May-22 11:00 27-May-22 17:00 ATCO TE 804s RTU/SCADA (804s Wintering Hills) addition of new station controller into 3Z panel, upgrade to new HMI, update configuration in the RTU 3.25 Days
Continuous
 
24-May-22 11:00 27-May-22 17:00 ATCO, OWF2 TE 7L153 (609s Wheatland - 804s Wintering Hills), 7L171 (802s Michichi Creek - 804s Wintering Hills), 7L85 (803s Bullpound - 804s Wintering Hills), 609s Wintering Hill DTT RAS, 804s Wintering Hills addition of new station controller into 3Z panel, upgrade to new HMI, retest alarms from the relays and 701T 3.25 Days
Continuous
 
24-May-22 12:00 31-May-22 16:00 ATCO Outage 951s 240kV 900BS2 (951s Thickwood Hills) addition of new bus on 900BS2, construction, commissioning 7.17 Days
Continuous
 
24-May-22 12:00 03-Jun-22 17:30 ATCO Outage 959S SVC (959s Lanfine) valve hall inspection, transformer testing 10.23 Days
Continuous
 
24-May-22 12:00 03-Jun-22 17:30 ALTALINK IO A959s SVC - Atco Info valve hall Inspection, transformer testing 10.23 Days
Continuous
 
24-May-22 12:30 02-Jun-22 18:00 ALTALINK Outage 163s 6352 (163s Amoco Empress), 163s C1 (163s Amoco Empress) replacing cap. bank protections 9.23 Days
Continuous
 
24-May-22 13:00 02-Jun-22 17:00 ALTALINK TE 163s C1 (163s Amoco Empress) protection upgrade on C1 9.17 Days
Continuous
 
25-May-22 07:00 26-May-22 19:30 ALTALINK TE 871L (163s Amoco Empress - 341s Sand Hills) prove alarming for SCADA changes as part of the 163s C1 protection upgrade 1.52 Days
Daily
 
25-May-22 07:00 27-May-22 17:00 ALTALINK TE 244s RTU/SCADA (244s Bowmanton) physical move of the emergency replaced RTU and testing RAS scheme controls 2.42 Days
Daily
 
25-May-22 07:00 27-May-22 17:00 ALTALINK TE 244s Bowmanton removing RAS relays from service one at a time to test SCADA controls and alarm changes 2.42 Days
Daily
 
25-May-22 07:00 02-Jun-22 17:00 ALTALINK TE 163s RTU/SCADA (163s Amoco Empress) configuration update due to 163s C1 protection upgrade 8.42 Days
Daily
 
25-May-22 07:30 26-May-22 17:30 ALTALINK, EPCOR IO 809L (320p Keephills - 510s Sunnybrook) Epcor line maintenance 1.42 Days
Continuous
 
25-May-22 08:00 26-May-22 18:00 ALTALINK Outage 216s T1 (216s Knightsbridge) transformer maintenance 1.42 Days
Continuous
 
25-May-22 08:00 26-May-22 17:00 ALTALINK, EPCOR RB 809L (320p Keephills - 510s Sunnybrook) aerial maintenance washing program 1.38 Days
Continuous
 
25-May-22 08:00 26-May-22 17:00 ALTALINK RB 863L (225s Magrath - 618s Riverbend) ground rod replacements 1.38 Days
Daily
 
25-May-22 08:00 26-May-22 16:00 ENMAX IO ENMAX 24 cable trench replacement 1.33 Days
Continuous
 
25-May-22 08:00 27-May-22 17:00 ATCO TE 853s Ring Creek RTU/SCADA updating firmware and settings on the station controller 2.38 Days
Continuous
 
25-May-22 10:31 26-May-22 17:30 ALTALINK Outage 63s T4 (63s Red Deer) maintenance, doble 30.98 Hours
Continuous
 
26-May-22 07:00 26-May-22 17:00 ENMAX RB 16.63L (ENMAX 16 - ENMAX 36) tree trimming 10 Hours
Daily
 
26-May-22 08:00 26-May-22 17:00 ALTALINK Outage 968L (138s Windy Flats - 370s North Lethbridge) urgent repair on structure 21 9 Hours
Daily
 
26-May-22 08:00 31-May-22 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29EDD86;29PT-297 SYSTEM;PM 5y,10y turnaround 5.42 Days
Continuous
 
26-May-22 08:00 26-May-22 14:00 ALTALINK Outage 634s T1 (634s Shell Raven River), 719L (378s Shell Caroline - 719BL tap), 719BL (634s Shell Raven River - 719L tap), 719L (719L259A - 719L216) urgent repair-adjust airbrake 719L216 6 Hours
Daily
 
26-May-22 08:00 26-May-22 12:00 ENMAX Outage 11B138-BT5 (ENMAX 11) breaker SF6 Gas Sample - 11B138-BT5 4 Hours
Continuous
 
26-May-22 08:00 26-May-22 14:00 ATCO RB 7L121 (833s Mariana - 860s Crow), 7L121 (833s Mariana - 917s Horse River), 7L02 (860s Crow - 885s McMillan) climbing inspection. 6 Hours
Continuous
 
26-May-22 08:00 26-May-22 17:00 ALTALINK RB 967L (138s Windy Flats - 370s North Lethbridge) urgent repair on 968L shared double circuit tower 9 Hours
Continuous
 
26-May-22 09:00 27-May-22 17:00 ALTALINK IO CBK 2CB10 - BCH Info BC Hydro CBK 2CB10 BFPN testing 1.33 Days
Continuous
 
26-May-22 09:00 27-May-22 17:00 BCH Outage 2CB10 (BCH Cranbrook) CBK 2CB10 BFPN testing, BC maintenance does not affect the Alberta ATC 1.33 Days
Continuous
AB-BC
26-May-22 09:00 29-May-22 17:00 ATCO TE 948s Heatburg update 700PT1 for new 7S1 panel 3.33 Days
Continuous
 
26-May-22 09:00 29-May-22 17:00 ATCO TE 948s RTU/SCADA (948s Heatburg) update RTU for new alarms for the 7S1 panel 3.33 Days
Continuous
 
26-May-22 12:00 26-May-22 16:00 ENMAX Outage 13B138-11.81 (ENMAX 13), 11.81L (ENMAX 11 - ENMAX 13) breaker SF6 Gas Sample - 13B138-11.81 4 Hours
Continuous
 
26-May-22 12:00 26-May-22 16:00 ALTALINK IO 11.81L (C11s-C13s) Enmax - Info breaker SF6 gas sample - 13B138-11.81 4 Hours
Daily
 
27-May-22 07:00 28-May-22 19:00 EPCOR TE EPCOR ICCP Outage communication outage - EPCOR system wide for EMS upgrade 1.5 Days
Continuous
 
27-May-22 08:00 28-May-22 12:00 ATCO Outage 948s 704 (948s Heatburg), 7L159 (948s Heatburg - 7LA159 tap) install new 7S1 panel 28 Hours
Continuous
 
27-May-22 08:00 31-May-22 18:00 SUNCOR Outage 29EDD-85, 29PL7-7 (29EDD-85 - 29EDD-160) turnaround 4.42 Days
Continuous
 
27-May-22 09:00 27-May-22 16:00 ALTALINK TE 526s RTU/SCADA (526s Buffalo Creek) update RTU and HMI to add new alarms/inputs from new protection and equipment 7 Hours
Daily
 
28-May-22 07:00 28-May-22 19:00 ALTALINK Outage 826L (77s Sagitawah - 701s Blue Ridge Lumber), 701s T1 (701s Blue Ridge Lumber) replace X2 bushing, repair leaks, miscellaneous tasks 12 Hours
Daily
 
28-May-22 13:00 28-May-22 17:00 ATCO Outage 948s 703 (948s Heatburg), 7L16 (766s Nevis - 948s Heatburg) install new 7S1 panel 4 Hours
Continuous
 
29-May-22 07:30 07-Jun-22 18:00 ATCO IO 75-PLH-901 CNRL COG request for 260kV Line Maintenance 9.44 Days
Continuous
 
29-May-22 07:30 07-Jun-22 18:00 CNRL Outage 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) 9.44 Days
Continuous
 
29-May-22 08:00 08-Jun-22 18:00 SUNCOR Outage 29EDD-160, Unmodeled Transmission Facility (Suncor) 29EDD160;29PP-110 SYSTEM;PM 5y,10y
-Turnaround-
10.42 Days
Continuous
 
30-May-22 06:30 30-May-22 12:30 ALTALINK TE 602s Cold Creek enable temporary under voltage protection to trip 1252 for 745L outage 6 Hours
Daily
 
30-May-22 07:00 30-May-22 17:00 EPCOR Outage 805s T4 (805s Jasper) temporary arc flash protection removal 10 Hours
Continuous
 
30-May-22 07:00 03-Jun-22 17:00 EPCOR Outage K724 (Kennedale), 72CK12 (987s Clover Bar - Kennedale) K724 bay doble and breaker maintenance 4.42 Days
Continuous
 
30-May-22 07:00 01-Jul-22 17:00 EPCOR TE 816s Petrolia relay blocking 32.42 Days
Continuous
 
30-May-22 07:00 03-Jun-22 17:00 EPCOR Outage EP 511s V722 (EP 511s Victoria), EP 511s V723 (EP 511s Victoria), EP 511s Victoria T2 (EP 511s Victoria) arrestor doble and disconnect switch maintenance 4.42 Days
Continuous
 
30-May-22 07:00 07-Jun-22 18:30 ALTALINK Outage 602s 745N (602s Cold Creek), 745L (602s Cold Creek - 745AL tap) replace the 745L line protections and install a new breaker fail protection for 745L 8.48 Days
Continuous
 
30-May-22 07:00 07-Jun-22 18:00 ALTALINK TE 345s RTU - Supervisory SCADA station upgrades 8.46 Days
Daily
 
30-May-22 07:30 01-Jun-22 16:30 ALTALINK Outage 510s ACF11 (510s Sunnybrook) filter maintenance. 2.38 Days
Continuous
 
30-May-22 07:30 05-Jun-22 18:00 CNRL TE 842s Horizon Upgrading RTU/SCADA upgrade to new RTU 6.44 Days
Continuous
 
30-May-22 07:30 01-Jun-22 09:00 CMH Outage MHS-3 MH69-T33 (MHS-3 South Ridge) transformer tapchanger maintenance and ARS PRC-005 testing 2.06 Days
Continuous
 
30-May-22 08:00 03-Jun-22 16:00 ENMAX, ALTALINK Outage 832L (ENMAX 10 - ENMAX 12) 12B138-832L CT replacement 4.33 Days
Continuous
 
30-May-22 08:00 03-Jun-22 14:08 ATCO Outage 2075s 902T (2075s Newell), 2075s ACF21 (2075s Newell) valve cooling inspection 4.26 Days
Continuous
 
30-May-22 08:00 31-May-22 16:00 ENMAX Outage 41B138-33.83 (ENMAX 41), 33.83L (ENMAX 33 - ENMAX 41) breaker maintenance 41B138-33.83 1.33 Days
Continuous
 
30-May-22 08:00 03-Jun-22 16:00 ALTALINK IO 832L (C10s-C12s) Enmax - Info 12B138-832L CT replacement 4.33 Days
Continuous
 
30-May-22 08:00 30-May-22 12:59 ATCO Outage 7L28 (717s Ethel Lake - 846s Grand Centre), 846s Grand Centre tap down 2000s on the line side of 700D1 4.98 Hours
Continuous
 
30-May-22 08:00 10-Jun-22 16:00 ENMAX Outage 8.1TR (ENMAX 8) protection replacement 11.33 Days
Continuous
 
30-May-22 08:00 02-Jun-22 16:00 ENMAX Outage 11.1TR (ENMAX 11) tapchanger maintenance 3.33 Days
Continuous
 
30-May-22 08:00 06-Jun-22 16:00 ATCO RB 7L228 (845s Big Mountain - 2091s Thornton) climbing inspection 7.33 Days
Daily
 
30-May-22 09:00 03-Jun-22 17:30 ALTALINK IO 747L/711L (37s-99s) Epcor - RB aerial maintenance washing program 4.35 Days
Continuous
 
30-May-22 09:00 03-Jun-22 17:00 BCH Outage T1 (BCH Nelway) NLY T1 inspection and doble test, BC maintenance does not affect the Alberta ATC 4.33 Days
Continuous
AB-BC
30-May-22 09:00 31-May-22 15:00 ATCO TE 791s Rainbow Lake protection outage for RAS181 relay settings 30 Hours
Daily
 
30-May-22 09:00 31-May-22 15:00 ALTALINK TE 336s Fincastle protection outage for RAS181 relay settings 30 Hours
Daily
 
30-May-22 09:30 03-Jun-22 17:00 ALTALINK, EPCOR RB 711L (Inland Cement - 747L tap), 747L (37s North Calder - 711L tap), 747L (99s North St. Albert - 711L tap) aerial maintenance washing program 4.31 Days
Continuous
 
30-May-22 09:30 02-Jun-22 16:30 ALTALINK IO 7L224 (A774s-650s) Atco - Advice 7L224 cross arm and insulator replacement. 3.29 Days
Continuous
 
30-May-22 10:00 02-Jun-22 16:00 ATCO Outage 7L224 (650s Hansman Lake - 774s Monitor) crossarm/insulator replacement 3.25 Days
Continuous
 
30-May-22 10:00 01-Jun-22 17:30 ATCO Outage 755s 906 (755s Cordel) breaker testing 2.31 Days
Continuous
 
30-May-22 10:00 01-Jun-22 17:30 ALTALINK IO 953L/9L953 (A755s) 906 Breaker-Atco Info ATCO maintenance on 755s906 breaker 2.31 Days
Continuous
 
30-May-22 10:00 31-May-22 14:00 ATCO Outage 6L97 (735s Swan River - 739s Edith Lake), 735s 603 (735s Swan River) correct deficiency on breaker 603 28 Hours
Continuous
 
30-May-22 10:00 02-Jun-22 17:00 ALTALINK RB 863L (225s Magrath - 618s Riverbend) ground rod replacements 863L structure range 1-164 3.29 Days
Daily
 
30-May-22 10:00 30-May-22 16:00 ATCO Outage 787s 703 (787s High Prairie), 787s 703C (787s High Prairie) PRC-005 trip coil testing 6 Hours
Continuous
 
30-May-22 10:15 02-Jun-22 17:45 ALTALINK Outage 336s T1 (336s Fincastle) replacement of 25kV & 138kV LA's 3.31 Days
Continuous
 
30-May-22 11:00 08-Jun-22 18:00 ALTALINK Outage 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 9.29 Days
Continuous
 
30-May-22 11:00 04-Jun-22 18:00 ALTALINK Outage 410s T1 (410s Josephburg) 410sT1 25kV neutral & 138kV bushing replacement 5.29 Days
Continuous
 
30-May-22 11:00 30-May-22 18:00 ALTALINK Outage 410s 152 (410s Josephburg), 410s 352 (410s Josephburg), 410s 240kV Bus 1 (410s Josephburg) maintenance on 410s5 7 Hours
Daily
 
30-May-22 11:00 02-Jun-22 17:00 ALTALINK Outage 65s 812W (65s High River) 1st trip PRC 5 maintenance 3.25 Days
Continuous
 
30-May-22 11:48 03-Jun-22 11:48 ATCO Outage 2029S GRTS 1301 High Speed switch maintenance on 1301

Redundant Return path unavailable.
IF the DMR has a sustained fault the link will stay off instead of operating in HV2 return mode
4 Days
Continuous
 
30-May-22 12:00 02-Jun-22 18:00 ALTALINK Outage 729L (542s-729L13A) - GOI, 729L (542s Ervick - 729AL tap) Fire Mitigation Components Str's Range (18-199) 3.25 Days
Continuous
 
30-May-22 12:00 01-Jun-22 16:00 ATCO Outage 2049s 901T (2049s Kettle River) 901T maintenance 2.17 Days
Continuous
 
30-May-22 12:00 08-Jun-22 17:00 ALTALINK TE 158s Vauxhall isolate/restore CVT1 contributions to the relays 9.21 Days
Continuous
 
30-May-22 12:00 08-Jun-22 17:00 ALTALINK TE 158s (763LN) - Relays blocking the outputs on 158s 763LN A21/B21/96/79 relays 9.21 Days
Continuous
 
30-May-22 12:00 08-Jun-22 17:00 ALTALINK TE 158s RTU/SCADA (158s Vauxhall) download new configuration 9.21 Days
Daily
 
30-May-22 12:00 08-Jun-22 17:00 ALTALINK TE 821L (158s Vauxhall - 421s Hays) blocking the 158s 821L A21/B21/96/79 relays 9.21 Days
Continuous
 
30-May-22 12:00 08-Jun-22 17:00 ALTALINK TE 158s Vauxhall blocking the outputs on 158s 763LX A21/B21/96/79 relays 9.21 Days
Continuous
 
30-May-22 12:30 02-Jun-22 17:30 ALTALINK Outage 58s 202X (58s Edson), 178s 202N (178s Cynthia), 202L (58s Edson - 178s Cynthia) breaker maintenance including 1st trips on 58s202X and replace the 138kV CTs at 178s202N. 3.21 Days
Continuous
 
30-May-22 12:30 30-May-22 17:30 ALTALINK RB 729L (40s Wetaskiwin - 729AL tap), 729L (285s East Camrose - 542s Ervick), 729L (542s Ervick - 729AL tap) fire mitigation install ground copper 729L10 5 Hours
Daily
 
30-May-22 13:00 30-May-22 17:00 ALTALINK TE 178s RTU/SCADA (178s Cynthia) disable current contributions from CT1 4 Hours
Daily
 
30-May-22 13:00 30-May-22 17:00 ALTALINK TE 178s Cynthia isolate CT1 138kV 202N line contributions 4 Hours
Daily
 
30-May-22 13:00 02-Jun-22 16:00 ALTALINK TE 58s Edson replacing the 138kV CT at 58s202X 3.13 Days
Daily
 
31-May-22 07:00 04-Jun-22 18:00 ALTALINK Outage 896L (19s Wabamun - 432s Carvel) urgent repair notifications on 896L2 and 779L3 4.46 Days
Continuous
 
31-May-22 07:30 31-May-22 17:30 ALTALINK Outage 426L (63s Red Deer - 194s South Red Deer), 194s 426 (194s South Red deer) grading cap replacement 10 Hours
Daily
 
31-May-22 07:30 31-May-22 19:00 ALTALINK TE 394s Empress change IP address on all protections 11.5 Hours
Daily
 
31-May-22 08:00 31-May-22 15:00 ALTALINK TE 39s RTU/SCADA (39s Bickerdike), 348S RTU/SCADA (348s Marlboro) cutover to new overbuilt radio 7 Hours
Daily
 
31-May-22 08:00 31-May-22 17:00 ALTALINK TE AltaLink Radio Tower 9422R to 9018R - radio repair and software upgrade 9 Hours
Daily
 
31-May-22 08:00 03-Jun-22 16:00 ENMAX Outage 2.2TR (ENMAX 2) testing and maintenance 3.33 Days
Continuous
 
31-May-22 08:00 31-May-22 17:00 ALTALINK TE 419s RTU/SCADA (419s Chestermere) correct configuration alarm errors for the new RAS relays 9 Hours
Daily
 
31-May-22 09:00 31-May-22 14:00 ATCO TE ATCO Radio Tower SCADA maintenance 5 Hours
Continuous
 
31-May-22 09:00 31-May-22 12:00 ATCO Outage 7L48 (787s High Prairie - 7L48 Tap), 787s 704 (787s High Prairie) PRC-005 trip coil testing 3 Hours
Continuous
 
31-May-22 09:00 31-May-22 12:00 ALTALINK TE 691L (74s Janet - 419s Chestermere), 765L (151s Strathmore - 419s Chestermere) remove L1/L2 overload RAS logic from the 691L & 765L protection relay 3 Hours
Daily
 
31-May-22 12:01 31-May-22 16:00 ATCO Outage 7L06 (784s Donnelly - 787s High Prairie), 787s 705 (787s High Prairie) PRC-005 trip coil testing 3.98 Hours
Continuous
 
01-Jun-22 07:30 02-Jun-22 17:00 ALTALINK Outage 425L (194s South Red Deer - 217s North Red Deer), 194s 425 (194s South Red deer) grading cap replacement 1.4 Days
Continuous
 
01-Jun-22 08:00 01-Jun-22 18:00 Syncrude TE Syncrude ICCP Outage SCADA - server update 10 Hours
Daily
 
01-Jun-22 08:00 02-Jun-22 16:00 ENMAX Outage 41.84L (ENMAX 41 - ENMAX 54) HV breaker maintenance 41B138-41.84 1.33 Days
Continuous
 
01-Jun-22 08:00 01-Jun-22 18:00 ALTALINK TE AltaLink MPLS, AltaLink TPR Outage, 244s RTU/SCADA (244s Bowmanton) upgrade MPLS node 10 Hours
Daily
 
01-Jun-22 08:00 01-Jun-22 16:00 ATCO IO AltaLink_Telecom AltaLink is upgrading MPLS equipment at 244s 8 Hours
Continuous
 
01-Jun-22 08:00 01-Jun-22 16:00 ALTALINK TE AltaLink Radio Tower 9074R-9520R radio- repair and upgrade software 8 Hours
Daily
 
01-Jun-22 08:00 02-Jun-22 18:00 ALTALINK TE 102s Langdon test relay DNP alarms and final acceptance (924L RAS175) 1.42 Days
Daily
 
01-Jun-22 08:00 02-Jun-22 18:00 ALTALINK TE 102s RTU/SCADA (102s Langdon) DNP alarms and testing 1.42 Days
Daily
 
01-Jun-22 08:00 02-Jun-22 18:00 ALTALINK TE 102s Langdon test relay DNP alarms and final acceptance (924L/927L RAS175) 1.42 Days
Daily
 
01-Jun-22 08:00 02-Jun-22 18:00 ALTALINK TE 102s Langdon test relay DNP alarms and final acceptance (927L RAS175) 1.42 Days
Daily
 
01-Jun-22 08:00 02-Jun-22 17:00 ALTALINK TE 876L (179s Gleichen - 253s Blackie) changes to the winter and summer overload settings for RAS_154 L4 (876L) overload protection relays 1.38 Days
Continuous
 
01-Jun-22 08:00 02-Jun-22 17:00 TRANSALTA TE 179s RTU/SCADA (179s Gleichen) correct configuration alarm errors for the new RAS relays 1.38 Days
Continuous
 
01-Jun-22 09:00 01-Jun-22 15:30 ALTALINK Outage 364s T1 (364s Whitecourt Industrial) 364s21 replace 2 - 25kV fused disconnects 6.5 Hours
Daily
 
01-Jun-22 09:00 01-Jun-22 16:00 ATCO Outage 809S 503 (809s Louise Creek), 809s 503R (809s Louise Creek) breaker maintenance 7 Hours
Continuous
 
01-Jun-22 09:00 03-Jun-22 16:00 ATCO Outage 729s 701T (729s Otauwau) maintenance 2.29 Days
Continuous
 
01-Jun-22 09:30 03-Jun-22 16:30 ALTALINK Outage 510s ACF12 (510s Sunnybrook) AC filter maintenance 2.29 Days
Continuous
 
01-Jun-22 10:00 03-Jun-22 13:00 CMH Outage MH-20L (MH69S-3 South Ridge - MH69S-6 Riverview), MHS-3 MH69-T34 (MHS-3 Southridge) transformer tapchanger maintenance and ARS PRC-005 testing 2.13 Days
Continuous
 
01-Jun-22 11:00 01-Jun-22 13:00 ATCO TE 768s RTU/SCADA (768s Rowley) Rowley_S-Telecom -7705 SAR v2 chassis upgrade

2 Hours
Continuous
 
02-Jun-22 07:00 02-Jun-22 18:00 ALTALINK TE 178s Cynthia restore CT1 138kV 202N line contributions and perform load readings 11 Hours
Daily
 
02-Jun-22 07:00 02-Jun-22 18:00 ALTALINK TE 602s RTU/SCADA (602s Cold Creek) SCADA station upgrades, update configuration for new Irig clock installation 11 Hours
Daily
 
02-Jun-22 07:00 02-Jun-22 18:00 ALTALINK TE 178s RTU/SCADA (178s Cynthia) restore current contributions from CT1 11 Hours
Daily
 
02-Jun-22 08:00 06-Jun-22 18:00 ATCO RB 7L65 (709s Vegreville - 710s Vermilion) HOP for installation of bird flight diverters 4.42 Days
Continuous
 
02-Jun-22 09:00 02-Jun-22 16:00 ATCO Outage 732s 501R (732s Mitsue), 732s 501 (732s Mitsue) breaker maintenance 7 Hours
Continuous
 
02-Jun-22 09:00 02-Jun-22 16:00 ALTALINK Outage 33s 6 (33s Spray) maintenance 7 Hours
Daily
 
02-Jun-22 10:00 02-Jun-22 14:00 ATCO TE ATCO Radio Tower, 875s Algar RTU/SCADA upgrade telecom Router to V2 Chassis 4 Hours
Continuous
 
02-Jun-22 10:00 03-Jun-22 15:00 ATCO Outage 7L28 (717s Ethel Lake - 846s Grand Centre) removal of 7L28 temporary bypass, that was in place for maintenance at Grand Centre 29 Hours
Continuous
 
03-Jun-22 04:30 09-Jun-22 22:00 ATCO Outage 859s 701T (859s Primrose), 859s 701 (859s Primrose), 859s 704 (859s Primrose) maintenance 6.73 Days
Continuous
 
03-Jun-22 08:00 16-Jun-22 18:00 SUNCOR Outage 29PL7-8/8A 29EDD-108 29EDD-109 29EDD-571, 29PL7-8 (29EDD-85 - 29EDD-160) 29PL7;29PS-XXX SWITCH MTCE &TEST;PDM 10y
29EDD108;29PT-337 SYSTEM;PM 5y,10y
29EDD109;29PT-338 SYSTEM;PM 10y
29EDD571;29PT-571 SYSTEM;PM 10y
-Turnaround-
13.42 Days
Continuous
 
03-Jun-22 08:00 03-Jun-22 16:00 ENMAX Outage 24.82L. 24.2TR, 24.82L (ENMAX 24 - ENMAX 65), 24.2TR (ENMAX 24), 24B138-24.82 (ENMAX 24) 24 sub cable trench replacement. Re-install control cables and commission. 8 Hours
Continuous
 
03-Jun-22 08:00 03-Jun-22 17:00 ATCO TE 951s Thickwood Hills, 9L01 (848s Ruth Lake - 951s Thickwood) perform new breaker 909 tripping, and adjust some PT circuits 9 Hours
Continuous
 
03-Jun-22 08:00 03-Jun-22 16:00 ALTALINK IO 24.82L (C24s-C65s) Enmax - Info 24 sub cable trench replacement. Re-install control cables and commission. 8 Hours
Daily
 

Prepared On:   2022-05-25   16:09:47

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.

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