Alberta Electric System Operator
System Co-ordination Plan
2023-02-23 to 2023-03-03
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		  
05-Jan-21 08:00 01-Jun-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29PT-69
877.38 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		  
14-Mar-22 14:00 02-Jun-23 18:00 ATCO TE 813s SVC (813s Little Smoky) emergency real time failed relay 445.17 Days
Continuous		  
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 17:00 ATCO TE 813s Little Smoky protection relay work 405.38 Days
Continuous		  
15-May-22 15:10 28-Feb-23 17:00 SUNCOR, ACCIONA Outage 139s C1 (139s Hillridge), 139s 52-C (139s Hillridge) repairs on the charging motor operating mechanism 289.12 Days
Continuous		  
04-Sep-22 16:50 01-Mar-23 18:00 ATCO Outage 848s 401R (848s Ruth Lake) forced outage 178.09 Days
Continuous		  
12-Dec-22 03:10 05-May-23 18:00 ALTALINK Outage 421s C1 (421s Hays) forced outage due to breaker 421s 30 failure 144.58 Days
Continuous		  
21-Dec-22 07:00 01-Mar-23 16:00 EPCOR TE 987s GDS1 (987s Cloverbar) customer request 70.38 Days
Continuous		  
03-Jan-23 07:00 31-Mar-23 17:00 EPCOR TE 330p Genesee, 330p RTU/SCADA (330p Genesee) relay maintenance and updates 87.38 Days
Continuous		  
03-Jan-23 07:00 31-Mar-23 17:00 EPCOR TE 814s Bellamy relay maintenance and updates 87.38 Days
Continuous		  
03-Jan-23 12:00 19-May-23 16:00 ENMAX Outage 14.2C (SS-14) forced outage 136.13 Days
Continuous		  
09-Jan-23 07:00 07-Apr-23 17:00 EPCOR TE Woodcroft P&C- 72 kV protection relay maintenance 88.38 Days
Continuous		  
09-Jan-23 07:00 07-Apr-23 17:00 EPCOR TE Namao P&C- 72 kV protection relay maintenance 88.38 Days
Continuous		  
09-Jan-23 07:00 07-Apr-23 17:00 EPCOR TE 987s Clover Bar P&C- 72 kV protection relay maintenance 88.38 Days
Continuous		  
12-Jan-23 08:00 06-Mar-23 08:30 ATCO IO 730S SVS SVS isolation from 730s. COG for construction 53.02 Days
Continuous		  
23-Jan-23 07:00 27-Feb-23 17:00 ATCO RB 9L66 (847s Muskeg River - 849s Joslyn Creek) bay swap to free up the existing 9L66 bay and connect to free bay at Muskeg River sub for the new line builds for CNRL Horizon 35.42 Days
Daily		  
23-Jan-23 08:00 31-Mar-23 18:00 CNRL, ATCO TE 847s Muskeg River, ATCO TPR Outage transferring teleprotection circuits from 9L66 relay to open bay PLT-260 relays 67.38 Days
Continuous		  
24-Jan-23 08:00 24-Feb-23 17:00 ATCO Outage 740s 701 (740s H.R. Milner) perform work on 701B 31.38 Days
Continuous		  
27-Jan-23 08:00 24-Feb-23 18:00 ATCO RB 9LJH1 (919s Hartley - 920s Jackpine), 9LJH2 (919s Hartley - 920s Jackpine) line work on new 9L66 - close poximity 28.42 Days
Continuous		  
27-Jan-23 15:20 03-Mar-23 16:00 BCH, ALTALINK RB 5L94 (BCH Cranbrook - 102s Langdon), 1201L (520s Bennett - BCH Cranbrook) emergency - BCH disabling recloser 35.03 Days
Continuous		  
02-Feb-23 06:28 24-Feb-23 18:00 ATCO Outage 959s SVC (959s Lanfine), 959s 921 (959s Lanfine) forced outage 22.48 Days
Continuous		  
06-Feb-23 10:00 06-Mar-23 10:00 ATCO Outage 813s 713 (813s Little Smoky), 813s 717 (813s Little Smoky), 813s 714C (813s Little Smoky), 813s 715C (813s Little Smoky), 813s 716C (813s Little Smoky) wiring panels and relay programming 28 Days
Continuous		  
06-Feb-23 11:00 03-Mar-23 16:00 ATCO TE 848s Ruth Lake relay testing 46 Relays, 86 Aux relays PRC005 25.21 Days
Continuous		  
07-Feb-23 13:00 07-Mar-23 09:13 ATCO TE 813s Little Smoky 901T - block 87TB/901T relay for 701CT injection 27.84 Days
Continuous		  
09-Feb-23 07:00 24-Feb-23 17:00 EPCOR Outage T2 (Strathcona), S723 (Strathcona), SAB2 (Strathcona), S722 (Strathcona) protection upgrade cutovers 15.42 Days
Continuous		  
09-Feb-23 12:01 06-Mar-23 07:59 ATCO Outage 7L121 (2043s Freer - 7LA121 tap) jumper 2 open until 7L121D3 is installed 24.83 Days
Continuous		  
11-Feb-23 07:00 10-Mar-23 18:00 ALTALINK TE 895s RTU/SCADA (895s Suffield) supervisory visibility outages required to download new configurations 27.46 Days
Daily		  
12-Feb-23 13:00 28-Feb-23 13:00 ENMAX IO 1080L (SS-25 - SS-65) AltaLink expansion of GOI zone for urgent work to replace 1080L cables into C25s for scaffolding for cable terminations 16 Days
Continuous		  
12-Feb-23 13:00 02-Mar-23 13:00 ALTALINK, ENMAX Outage 1080L (SS-25 - SS-65), 240kV West Bus (SS-25), 25B240-D139 (SS-25), 25B240-D142 (SS-25), 25B240-D133 (SS-25), 25B240-D136 (SS-25), 25B240-D138 (SS-25), 25MD240-1080 (SS-25) expansion of GOI zone for urgent work to replace 1080L cables into C25s for scaffolding for cable terminations 18 Days
Continuous		  
13-Feb-23 07:00 31-Mar-23 17:00 EPCOR Outage T2 (Garneau), G725 (Garneau), G726 (Garneau), GAB2 (Garneau), GT2-O (GARNEAU) transformer replacement 46.38 Days
Continuous		  
13-Feb-23 08:00 24-Feb-23 15:00 ALTALINK TE 1325L (510s Sunnybrook - AML 511s Crossings) fiber repair @ 1325L structures 519, 752 11.29 Days
Daily		  
13-Feb-23 08:00 24-Feb-23 15:00 ALTALINK RB 1325L (510s Sunnybrook - AML 511s Crossings) fiber repair @ 1325L structures 519, 752 11.29 Days
Daily		  
13-Feb-23 09:30 24-Feb-23 17:25 ATCO TE 865s RTU/SCADA (865s Saddlehills) battery program updates - add new breakers with aux contacts to DC system 11.33 Days
Continuous		  
13-Feb-23 10:00 23-Feb-23 10:00 ATCO Outage 7L80 (733s Simonette - 857s Kakwa Ridge), 7L80 (740s H.R. Milner - 857s Kakwa Ridge) line mitigation, cross arm replacement 10 Days
Continuous		  
13-Feb-23 13:00 24-Feb-23 13:20 ATCO TE 813s 902T (813s Little Smoky) test GOOSE messages from new protection 50BF/713 relay 11.01 Days
Continuous		  
13-Feb-23 13:00 07-Mar-23 09:13 ATCO TE 813s 901T (813s Little Smoky) block 87TB/901T relay for 701CT injection 21.84 Days
Continuous		  
14-Feb-23 09:30 31-Mar-23 17:30 ATCO TE 772s RTU/SCADA (772s Youngstown) RTU updates 45.29 Days
Continuous		  
14-Feb-23 10:00 24-Feb-23 16:00 ATCO TE 780s Lubicon 707C protection relay circuit work and testing 10.25 Days
Continuous		  
14-Feb-23 11:00 24-Feb-23 16:00 ATCO Outage 780s 707C (780s Lubicon) PRC-005 - trip coil testing- breaker 707 10.21 Days
Continuous		  
20-Feb-23 07:00 24-Feb-23 17:00 ALTALINK TE 662s RTU/SCADA (662s Hilda) RTU configuration updates 4.42 Days
Daily		  
20-Feb-23 07:00 24-Feb-23 17:00 ALTALINK TE 562s RTU/SCADA (562s Cypress) RTU configuration updates 4.42 Days
Daily		  
20-Feb-23 07:00 24-Feb-23 18:00 ALTALINK TE 674L (244s Bowmanton - 649s Chappice Lake) relay setting changes 4.46 Days
Daily		  
20-Feb-23 07:00 24-Feb-23 17:00 ALTALINK TE 562s Cypress 138 kV bus 2 - troubleshoot remote access issue and possible setting change to rectify issue 4.42 Days
Daily		  
20-Feb-23 07:00 24-Feb-23 18:00 ALTALINK TE 658L (562s Cypress - 658AL tap), 658L (649s Chappice Lake - 658AL tap), 658AL (662s Hilda - 658AL tap) relay setting change 4.46 Days
Daily		  
20-Feb-23 07:00 24-Feb-23 17:00 ALTALINK TE 244s Bowmanton 138 kV bus 2, 3 and 4 - troubleshoot remote access issue and possible setting change 4.42 Days
Daily		  
20-Feb-23 08:00 24-Feb-23 16:00 ALTALINK Outage 648L (63s Red Deer - 580s Sylvan Lake), 63s 648 (63s Red Deer), 580s 648 (580s Sylvan Lake) re-locate and resplice understrung OPGW between 648L96 and 648L97 to top of structures, and salvage old 80L crossing above 4.33 Days
Continuous		  
21-Feb-23 07:15 23-Feb-23 17:45 ALTALINK Outage 752L (64s East Crossfield - 752AL tap), 752L (653s Summit - 752AL tap), 752AL (316s West Crossfield - 752L tap) FRM component replacement (str 11-12) 2.44 Days
Continuous		  
21-Feb-23 07:15 24-Feb-23 17:45 ALTALINK Outage 50L (44s Bearspaw Plant - SS-21) insulator and structure repair 3.44 Days
Continuous		  
21-Feb-23 07:15 24-Feb-23 17:00 ENMAX IO 50L(44s- C21s) Altalink 50L FRM (STR 115-125) - insulator and structure repair 3.41 Days
Continuous		  
21-Feb-23 08:00 24-Feb-23 17:00 ALTALINK RB 860L (44s Bearspaw Plant - 291s Cochrane) proximity to 50L FRM (str 115-125) work 3.38 Days
Daily		  
21-Feb-23 08:00 24-Feb-23 16:00 ENMAX Outage 24.2TR (SS-24) relay, protection testing 24RLY138-24.2TR A GE, SEL-351S, 24BB25-24.2TR 3.33 Days
Continuous		  
21-Feb-23 09:30 24-Feb-23 17:30 ATCO TE 2029s RTU/SCADA (2029s Heathfield), ATCO PMU 2029s PMU channel calibration and test new computer and archive storage device that will be replaced for interfacing with the PMU and running open PDC program 3.33 Days
Continuous		  
21-Feb-23 10:00 31-Mar-23 17:00 ATCO, CNRL TE 847s RTU/SCADA (847s Muskeg River) download RTU program changes for 9L66 line relocation in 847S Muskeg Rive 38.25 Days
Continuous		  
21-Feb-23 10:00 28-Feb-23 17:00 CNRL, ATCO TE 847s Muskeg River, 849s Joslyn Creek, ATCO TPR Outage transferring teleprotection circuits from 9L66 relay to open bay PLT-260 relays
7.29 Days
Continuous		  
21-Feb-23 11:00 24-Feb-23 16:00 ATCO TE 930s RTU/SCADA (930s Arcenciel) RTU alarm configuration updates 3.21 Days
Continuous		  
21-Feb-23 12:00 16-Mar-23 18:00 ALTALINK Outage 174L (197s Bardo - 395s North Holden), 395s 174W (395s North Holden) rebuild 174L from existing structure 174L692 to 174L742 23.21 Days
Continuous		  
22-Feb-23 08:00 01-Mar-23 17:30 ATCO TE 730s RTU/SCADA (730s Rycroft) update a few alarm descriptions 7.4 Days
Continuous		  
22-Feb-23 08:00 23-Feb-23 12:00 ALTALINK TE 447s RTU/SCADA (447s Enchant) to ensure the new 3.3 EMS connects to sites in the field 28 Hours
Daily		  
22-Feb-23 08:00 25-Feb-23 16:00 ENMAX TE SS-25 240 kV bus differential zone 45 A and B - relay, lockout testing. 25-Z45A-86, 25-Z45B-86
3.33 Days
Daily		  
22-Feb-23 08:30 23-Feb-23 16:30 ALTALINK Outage 100L (498s Tilley - 895s Suffield), 895s 100 (895s Suffield), 498s 100X (498s Tilley) migrate and commission at 895s Suffield 1.33 Days
Continuous		  
22-Feb-23 09:30 24-Feb-23 17:30 ATCO TE 2075s Newell PRC-005 - aux trip relay testing 2.33 Days
Continuous		  
22-Feb-23 10:00 27-Feb-23 12:00 ATCO Outage 7L12 (834s Wesley Creek - 7LA12 tap) changing arms and pole repairs 5.08 Days
Continuous		  
22-Feb-23 15:00 24-Feb-23 18:00 ATCO Outage 7L50 (757s Battle River - 491L tap), 757s 709 (757s Battle River) emergency real time outage to repair shield wire broken on several structures 2.13 Days
Continuous		  
22-Feb-23 23:00 23-Feb-23 03:00 ALTALINK Outage 62s 12 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
23-Feb-23 03:00 23-Feb-23 07:00 ALTALINK Outage 62s 11 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
23-Feb-23 07:00 27-Feb-23 17:00 CNRL IO 847s 9L66D2 (847s Muskeg River) transfer load back to existing 9L66 bay from PTL-260 Bay @ 847s 4.42 Days
Continuous		  
23-Feb-23 07:00 24-Feb-23 17:00 EPCOR TE 816s Petrolia T2 - B protection blocking for protection upgrade cut over 1.42 Days
Continuous		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 63s Red Deer perform relay maintenance on 901L B21/L2 & 901L A21/L2 9 Hours
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 64s East Crossfield perform relay maintenance on 901L A21/L1 & 901L B21/L1 9 Hours
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 422s Westwood relay setting change on T1 B87/50/51/51NN/T1 9 Hours
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 223s Strome PRC maintenance, 701LX B21/L1 LFZP111, 701LN B21/L2 LFZP111 9 Hours
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 310p RTU/SCADA (310p Sundance) RTU configuration changes 9 Hours
Daily		  
23-Feb-23 08:00 24-Feb-23 17:00 ALTALINK TE 618s Riverbend perform relay maintenance 1.38 Days
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE AltaLink Radio Tower, AltaLink TPR Outage, AltaLink RTU/SCADA (AltaLink) 9071R - software upgrade 9 Hours
Daily		  
23-Feb-23 08:00 24-Feb-23 16:00 ENMAX TE RTU/SCADA (SS-54) RTU maintenance, alarm test - RTU-54 ANN, peripheral board testing and wiring 1.33 Days
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK TE 388s RTU/SCADA (388s Riverside) card replacement 9 Hours
Daily		  
23-Feb-23 08:00 23-Feb-23 17:00 ALTALINK Outage 234L (310p Sundance - 505L tap), 234L (133L tap - 505L tap), 505L (234L tap - 505L tap), 310P 234N (310p Sundance) urgent repair 310p234N DC ground 9 Hours
Daily		  
23-Feb-23 08:00 24-Feb-23 20:00 Syncrude Outage 14 (Aurora) replace CT 14 1.5 Days
Continuous		  
23-Feb-23 08:30 23-Feb-23 17:00 ATCO TE 820s RTU/SCADA (820s Hangingstone), 2014s RTU/SCADA (2014s Halfway), 820s Hangingstone migrate half of protection channels along with SCADA channels 8.5 Hours
Continuous		  
23-Feb-23 10:00 24-Feb-23 10:00 ATCO, ALTALINK Outage 1241L (510s Sunnybrook - 939s Livock) urgent change out a lightning arrestor that has a 100 degree hotspot 24 Hours
Continuous		  
24-Feb-23 08:00 24-Feb-23 17:00 SUNCOR TE 29EDD-71 updates to D20MX at the 29EDD-71 point description and inverted status update 9 Hours
Continuous		  
24-Feb-23 08:00 01-Mar-23 13:00 ATCO RB 7L65 (709s Vegreville - 710s Vermilion) stringing OPGW for new phase 2 build of 7L65, setting rider poles between structures 35 and 34 5.21 Days
Daily		  
25-Feb-23 09:00 25-Feb-23 11:00 ATCO Outage 7L94 (827s Cranberry Lake - 878s Kidney Lake) insulator replacement on several poles 2 Hours
Continuous		  
25-Feb-23 09:00 25-Feb-23 15:00 ATCO RB 7L20 (810s Dome Cutbank - 7L228 tap), 7L228 (845s Big Mountain - 7L20 tap) high load move 6 Hours
Continuous		  
25-Feb-23 11:00 25-Feb-23 12:00 ALTALINK IO 887L/1L274(1D2L274-EFT 1D22)BCH Outage BC Hydro Work 60 Mins
Daily		  
25-Feb-23 11:00 25-Feb-23 12:00 BCH Outage 1L274 (BCH Elkford tap - BCH Line Creek tap) de-energize and re-energize EFD substation remotely, does not affect the Alberta ATC 60 Mins
Continuous		 AB-BC
25-Feb-23 13:00 25-Feb-23 16:00 ATCO RB 7L60 (780s Lubicon - 827s Cranberry Lake), 7L94 (827s Cranberry Lake - 878s Kidney Lake) pole change 3 Hours
Continuous		  
26-Feb-23 08:00 26-Feb-23 11:00 ENMAX Outage 21.1TR (SS-21) LV breaker maintenance 3 Hours
Continuous		  
26-Feb-23 10:00 27-Feb-23 16:00 ATCO RB 7L60 (780s Lubicon - 827s Cranberry Lake), 7L94 (827s Cranberry Lake - 878s Kidney Lake) pole change 30 Hours
Daily		  
27-Feb-23 07:00 17-Mar-23 17:00 EPCOR Outage T3 (Strathcona), S723 (Strathcona), SAB3 (Strathcona) Strathcona: protection upgrade cut overs 18.38 Days
Continuous		  
27-Feb-23 07:00 17-Mar-23 17:00 EPCOR Outage 72LS24 (EP 803s Lambton - Strathcona), 72LH8 (EP 803s Lambton - EP Hardisty), S724 (Strathcona), EP 803s L721 (EP 803s Lambton), SDS10 (Strathcona), EP 803s LDS14 (EP 803s Lambton) Strathcona/Lambton: Strathcona protection upgrade cut overs 18.38 Days
Continuous		  
27-Feb-23 07:00 28-Feb-23 17:30 ALTALINK RB 700L (422s Westwood - 746L tap), 700L (746s Sherwood Park - 746L tap), 746L (700L tap - 746AL tap) complete portion of 700L line relocation between structures 23 and 40 - live line work 1.44 Days
Daily		  
27-Feb-23 07:15 02-Mar-23 17:00 ENMAX IO 50L(44s- C21s) Altalink outage - 50L FRM str 115-125) - insulator and structure repair 3.41 Days
Continuous		  
27-Feb-23 07:15 03-Mar-23 17:45 ALTALINK Outage 50L (44s Bearspaw Plant - SS-21) insulator and structure repair - (str 115-125) 4.44 Days
Continuous		  
27-Feb-23 08:00 03-Mar-23 16:00 BCH Outage 5CB21 (BCH Cranbrook) BC protection work 4.33 Days
Daily		 AB-BC
27-Feb-23 08:00 03-Mar-23 16:00 BCH RB 5L94 (BCH Cranbrook - 102s Langdon) BC protection work 4.33 Days
Continuous		  
27-Feb-23 08:00 09-Mar-23 17:00 ALTALINK IO 511s Info Only configuration changes to equipment 10.38 Days
Continuous		  
27-Feb-23 08:00 28-Feb-23 16:00 ALTALINK Outage 763AL (447s Enchant - 763L tap), 447s 763A (447s Enchant) install structure 98 and T-tap for future new 763CL 1.33 Days
Continuous		  
27-Feb-23 08:00 03-Mar-23 17:00 ALTALINK TE 275s RTU/SCADA (275s Jenner) to add and test new alarm points for DC splitting/battery bank expansion project 4.38 Days
Continuous		  
27-Feb-23 08:00 28-Feb-23 16:00 ENMAX TE 162.2TR (SS-162) relay, protection testing - 162RLY240-162.2TR A GE 1.33 Days
Continuous		  
27-Feb-23 08:00 01-Mar-23 17:00 ALTALINK TE 410s Josephburg PRC relay maintenance 2.38 Days
Daily		  
27-Feb-23 08:00 03-Mar-23 17:00 ALTALINK RB 150L (20s Ghost - 150AL tap), 150L (42s Sarcee - 150AL tap), 150AL (271s Shell Jumping Pound - 150A1L tap), 150A1L (180s Cope Creek - 150AL tap) 150AL line clearance (STR 10-19) - live line work 4.38 Days
Daily		  
27-Feb-23 08:00 28-Feb-23 18:00 ENMAX Outage 54.81L (SS-54 - SS-65), SW91 (SS-65), 65B138-D83 (SS-65), 65B138-D84 (SS-65), 54B138-54.81 (SS-54), 65MD138-54.81 (SS-65) switch maintenence. 1.42 Days
Continuous		  
27-Feb-23 08:00 28-Feb-23 16:00 ENMAX TE SS-47 138 kV bus differential protection Z31 - relay, protection testing, GE UR | replace battery on 47RLY138-Z31 1.33 Days
Continuous		  
27-Feb-23 08:00 03-Mar-23 16:00 ALTALINK IO 5L94/1201L protection BCH - Info BCH work. CBK 5L94 / 1201L PYPN PN/TC, and reclosing OOS. 1201L primary and secondary protection will be out of service one at a time 4.33 Days
Daily		  
27-Feb-23 08:00 03-Mar-23 17:00 ATCO TE 780s RTU/SCADA (780s Lubicon) RTU configuration update with additions for BMS alarming 4.38 Days
Continuous		  
27-Feb-23 08:00 03-Mar-23 17:00 ALTALINK RB 860L (44s Bearspaw Plant - 291s Cochrane) required for 50L (str 115 -125) work 4.38 Days
Continuous		  
27-Feb-23 09:00 27-Feb-23 15:00 ATCO RB 7L20 (810s Dome Cutbank - 7L228 tap), 7L228 (845s Big Mountain - 7L20 tap) high load move 6 Hours
Continuous		  
27-Feb-23 09:00 01-Mar-23 17:00 BCH Outage 5L91 (BCH Ashton Creek - BCH Selkirk) Need to inspect three DS's within this zone 2.33 Days
Continuous		 AB-BC
27-Feb-23 09:00 01-Mar-23 17:00 ALTALINK IO 5L91 (SEL - ACK) BCH - Info Need to inspect three DS's within this zone. 2.33 Days
Continuous		  
27-Feb-23 09:00 31-Mar-23 17:00 ATCO RB 9L23 (848s Ruth Lake - 977s Salt Creek), 7L71 (848s Ruth Lake - 2082s Dog Rib), 7L71 (718s Parsons Creek - 2082s Dog Rib), 7L47 (718s Parsons Creek - 848s Ruth Lake) stringing new 9L193/9L162 over top of existing lines 7L71, 7L47, 9L23 32.29 Days
Continuous		  
27-Feb-23 09:30 01-Mar-23 12:00 ATCO Outage 2075s 900SST1 (2075s Newell), 2075s 920 (2075s Newell), 2075s 921 (2075s Newell), 2075s 900SST1D1 (2075s Newell), 2075s 920B (2075s Newell), 2075s 921A (2075s Newell) 900SST1 PRD trip removal. 2.1 Days
Continuous		  
27-Feb-23 10:00 08-Mar-23 15:00 ATCO Outage 7L80 (733s Simonette - 857s Kakwa Ridge), 7L80 (740s H.R. Milner - 857s Kakwa Ridge) line mitigation, cross arm replacement 9.21 Days
Continuous		  
27-Feb-23 10:00 12-Mar-23 12:00 ATCO Outage 7L30 (732s Mitsue - 844s AEC Mill), 732s 704 (732s Mitsue), 732s 707 (732s Mitsue), 844s 703 (844s AEC Mill), 732s 7L30D1 (732s Mitsue) 7L30 protection upgrade 13.04 Days
Continuous		  
27-Feb-23 10:00 01-Mar-23 17:00 ALTALINK TE 65s RTU/SCADA (65s High River) update RTU for fault reporting 2.29 Days
Continuous		  
27-Feb-23 10:00 27-Feb-23 17:00 ALTALINK TE 65s High River 434L - DNP setting changes and testing for implementation of fault reporting to SCADA 7 Hours
Daily		  
27-Feb-23 10:00 02-Mar-23 16:00 ATCO TE 730s Rycroft PRC-005 microprocessor relay testing - 7L10, 7L68, 7L73, 144 kV breakers 3.25 Days
Continuous		  
27-Feb-23 11:00 27-Feb-23 17:00 ALTALINK TE 83s Taber standard relay maintenance 6 Hours
Daily		  
27-Feb-23 11:00 27-Feb-23 17:00 ALTALINK TE 254s Coaldale standard relay maintenance 6 Hours
Daily		  
27-Feb-23 11:00 27-Feb-23 17:00 ALTALINK, DOW TE 166s Dow Chemical Fort Saskatchewan PRC relay maintenance 6 Hours
Daily		  
27-Feb-23 11:00 27-Mar-23 10:00 ATCO TE 732s RTU/SCADA (732s Mitsue) 7L30, 7L31 protection upgrade, RTU upgrade - 7L23, 7L49, 7L162, 144 kV bus and breakers 27.92 Days
Continuous		  
27-Feb-23 11:00 27-Mar-23 10:00 ATCO TE 844s RTU/SCADA (844s AEC Mill) 7L30, 7L31 protection upgrade, RTU upgrade - 144 kV bus
27.92 Days
Continuous		  
27-Feb-23 11:00 27-Feb-23 17:00 ALTALINK TE 595s Spruce Grove relay maintenance 6 Hours
Daily		  
27-Feb-23 11:00 28-Feb-23 17:00 ALTALINK TE 520s RTU/SCADA (520s Bennett) T1-2 monitor installation 30 Hours
Daily		  
27-Feb-23 12:00 01-Mar-23 16:00 ATCO TE 969s Lindbergh 701T - relay testing 2.17 Days
Continuous		  
27-Feb-23 12:30 27-Feb-23 17:00 ALTALINK TE 258s Dow Hydrocarbons relay maintenance 4.5 Hours
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 ALTALINK TE 254s Coaldale standard relay maintenance 9 Hours
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 ALTALINK TE 14s Devon PRC maintenance 9 Hours
Daily		  
28-Feb-23 08:00 01-Mar-23 17:00 ALTALINK TE 370s North Lethbridge standard relay maintenance 1.38 Days
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 ALTALINK TE 14s RTU/SCADA (14s Devon) trouble shooting DC system 9 Hours
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 ALTALINK TE 233s Beamer relay maintenance 9 Hours
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 ALTALINK TE 899s Edgerton PRC relay maintenance and settings change 9 Hours
Daily		  
28-Feb-23 08:00 01-Mar-23 17:00 ALTALINK TE 409s Shell Scotford relay maintenance 1.38 Days
Daily		  
28-Feb-23 08:00 28-Feb-23 17:00 SUNCOR TE SUNCOR ICCP Outage updates to D20MX at the 29EDD-71, point description and inverted status update 9 Hours
Continuous		  
28-Feb-23 08:00 28-Feb-23 18:00 ALTALINK TE 421s RTU/SCADA (421s Hays), 421s Hays MPLS upgrade at 421s Hays and RTU outage at 421s 10 Hours
Daily		  
28-Feb-23 08:00 28-Feb-23 12:00 ALTALINK TE 140s RTU/SCADA (140s Thompson) confirm the new 3.3 EMS connects to sites in the field 4 Hours
Daily		  
28-Feb-23 08:00 02-Mar-23 17:00 ALTALINK TE 308s RTU/SCADA (308s Albchem Beaverhill Creek) reconfigure alarms 2.38 Days
Daily		  
28-Feb-23 08:00 02-Mar-23 17:00 ALTALINK TE 410s RTU/SCADA (410s Josephburg) reconfigure alarms 2.38 Days
Daily		  
28-Feb-23 08:00 02-Mar-23 17:00 ALTALINK TE 308s Albchem Beaverhill Creek, 410s 1 (410s Josephburg) configuration changes - 776L at both 308s and 410s 2.38 Days
Daily		  
28-Feb-23 09:00 28-Feb-23 18:00 ATCO TE 780s RTU/SCADA (780s Lubicon), 869s RTU/SCADA (869s Seal Lake) Telecom tower work 9 Hours
Continuous		  
28-Feb-23 09:00 28-Feb-23 14:00 CMH TE MHS-2 RTU/SCADA (MHS-2 North Industrial) reconfiguration of Communications equipment 5 Hours
Continuous		  
28-Feb-23 11:00 01-Mar-23 14:00 ATCO TE 740s RTU/SCADA (740s H.R.Milner), 857s RTU/SCADA (857s Kakwa Ridge) aprisa firmware upgrade and radio maintenance 27 Hours
Continuous		  
28-Feb-23 13:00 28-Feb-23 17:00 MEGEC TE 762s RTU/SCADA (762s Conklin) card replacement on MPLS node 4 Hours
Daily		  
01-Mar-23 06:00 04-Mar-23 18:00 ALTALINK Outage 700L (422s Westwood - 746L tap), 700L (746s Sherwood Park - 746L tap), 746L (700L tap - 746AL tap) 700L line relocation between structures 23 and 41 3.5 Days
Continuous		  
01-Mar-23 07:30 13-Mar-23 18:00 CNRL IO 75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek) ATCO 838S substation expansion tie-in work and protective relay upgrades 12.4 Days
Continuous		  
01-Mar-23 07:30 13-Mar-23 18:00 CNRL, ATCO Outage 75-PLH-901 (838s Horizon Mining - 849s Joslyn Creek), 849s 907 (849s Joslyn Creek) Horizon Project - disconnect existing 75-PLH-901 from former 75-PLH-901 bay to new 838S-900BS2 12.4 Days
Continuous		  
01-Mar-23 08:00 01-Mar-23 18:00 Syncrude TE ICCP Server Outage SCADA - Server Update 10 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 138s Windy Flats standard relay maintenance 9 Hours
Daily		  
01-Mar-23 08:00 07-Mar-23 18:00 SUNCOR Outage 29EDD-71 29PT-336 (29EDD-71), 29EDD-71 752-4651 (29EDD-71), 29EDD-71 752-4652 (29EDD-71), 29EDD-71 752-4654 (29EDD-71), 29EDD-71 29PS-434 (29EDD-71 Edd71Sub), 29EDD-71 29PS-430 (29EDD-71 Edd71Sub), 29EDD-71 30-252-12501 (29EDD-71) maintenance and testing 6.42 Days
Continuous		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 377s RTU/SCADA (377s AML Hardisty) troubleshoot 703L relay communication issue 9 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 377s AML Hardisty maintenance on 702L 25/L1 and 769L B21/L6 relays 9 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 377s AML Hardisty troubleshoot 703L B21 relay communication fail 9 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 37s North Calder PRC relay maintenance -726L 9 Hours
Daily		  
01-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 71s Lamoureux PRC relay maintenance - 726L, 997L 1.38 Days
Daily		  
01-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 102s Langdon standard relay maintenance 1.38 Days
Daily		  
01-Mar-23 08:00 01-Mar-23 16:00 ENMAX Outage 38.83L (SS-38 - SS-39), 38B138-38.83 (SS-38), 39B138-38.83 (SS-39) 138-38.83-3 repair/replace insulator - contact with kite 8 Hours
Continuous		  
01-Mar-23 08:00 01-Mar-23 18:00 ALTALINK TE 415s RTU/SCADA (415s Drywood), 379s RTU/SCADA (379s Shell Canada Waterton) MPLS upgrade 10 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 18:00 ENMAX TE SS-3 138 kV bus differential relay and 86 lockout Z31 outage, relay, lockout testing 86, 3RLY138-3.Z31 10 Hours
Continuous		  
01-Mar-23 08:00 01-Mar-23 16:00 ENMAX Outage 31.3TR (SS-31) auxiliary relay missing mounting base in 31.3TR relay panel 8 Hours
Continuous		  
01-Mar-23 08:00 01-Mar-23 17:00 ALTALINK TE 171s RTU/SCADA (171s Redwater), 171s Redwater replace flash card 9 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 16:00 ALTALINK IO 38.83L (C38s-C39s) Enmax - Info repair/replace insulator 8 Hours
Daily		  
01-Mar-23 08:00 01-Mar-23 12:00 ALTALINK TE 447s RTU/SCADA (447s Enchant) to ensure the new 3.3 EMS connects to sites in the field 4 Hours
Daily		  
01-Mar-23 09:00 01-Mar-23 17:00 ATCO TE ATCO Radio Tower, 878s RTU/SCADA (878s Kidney Lake) radio link cutover 8 Hours
Continuous		  
01-Mar-23 10:00 01-Mar-23 12:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) RigSat comm outage 2 Hours
Daily		  
01-Mar-23 10:00 31-Mar-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) download changes to RTU and HMI 30.25 Days
Continuous		  
01-Mar-23 10:00 01-Mar-23 16:00 ATCO TE 794s 702T (794s Valleyview) 87/702T relay testing 6 Hours
Continuous		  
01-Mar-23 10:00 31-Mar-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) download changes to 849S Joslyn RTU and HMI 30.25 Days
Continuous		  
01-Mar-23 10:00 01-Mar-23 12:00 ALTALINK TE AltaLink Radio Tower 9000R Radio - MDA has failed and needs to be replaced 2 Hours
Daily		  
01-Mar-23 10:30 01-Mar-23 12:30 CMH TE Medicine Hat ICCP Outage testing of a new configuration of the ICCP link to provide more predictable failover in event of comms loss to primary data center. 2 Hours
Daily		  
01-Mar-23 12:00 01-Mar-23 17:00 ALTALINK TE 252s RTU/SCADA (252s Jarrow) confirm the new 3.3 EMS connects to sites in the field 5 Hours
Daily		  
01-Mar-23 13:00 03-Mar-23 17:30 ATCO Outage 2075s 900SST2 (2075s Newell) 900SST2 PRD trip removal 2.19 Days
Continuous		  
02-Mar-23 07:00 02-Mar-23 17:00 EPCOR Outage 557s CD2403 (557s Castle Downs) emergency dashpot repair 10 Hours
Continuous		  
02-Mar-23 08:00 05-Mar-23 16:00 ENMAX TE SS-25 240 kV bus differential zone 43 A and B - lockout testing, 25-Z43A-86, 25-Z43B-86. relay, protection testing 25RLY240-25.Z43 A, 25RLY240-25.Z43 B 3.33 Days
Daily		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 102s Langdon, 102s 240kV East Bus (102s Langdon) relay maintenance 9 Hours
Daily		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 138s 240kV Bus 1 (138s Windy Flats), 138s 240kV Bus 2 (138s Windy Flats) standard relay maintenance 9 Hours
Continuous		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 430s Ursus maintenance on 997L A21/87/L1 and 997L B21/87/L1 protections 9 Hours
Daily		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 410s Josephburg maintenance on 857L A87/L6 and 857L B87/L6 protections 9 Hours
Daily		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE 409s Shell Scotford maintenance on 857L A87/21/79/L3 and 857L B87/21/L3 protections 9 Hours
Daily		  
02-Mar-23 08:00 04-Mar-23 18:00 ENMAX Outage 65.1TR (SS-65), 240kV South Bus (SS-65), 138kV South Bus (SS-65), 65B240-D130 (SS-65), 65B240-D133 (SS-65), 65MD240-65.1TR (SS-65), 65MD138-65.1TR (SS-65), 65B138-D81 (SS-65), 65B138-D83 (SS-65) maintenance on SW130, SW136, SW88, SW80, SW81, SW83, MD138-65.1TR, MD240-65.1TR 2.42 Days
Continuous		  
02-Mar-23 08:00 02-Mar-23 17:00 ALTALINK TE AltaLink Radio Tower, 127s RTU/SCADA (127s Bruderheim), 308s RTU/SCADA (308s Albchem Beaverhill Creek), 365s RTU/SCADA (365s Canadianoxy Astotin Creek) replace flash card 9013R radio 9 Hours
Daily		  
02-Mar-23 08:00 04-Mar-23 18:00 ALTALINK IO 65.1TR (C65s) Enmax - Info ENMAX HV SW maintenance on SW130, SW136, SW88, SW80, SW81, SW83, MD138-65.1TR, MD240-65.1TR 2.42 Days
Continuous		  
02-Mar-23 09:30 02-Mar-23 12:30 ALTALINK Outage 17s C1 (17s Benalto) maintenance on PRC load readings and trip coil checks 3 Hours
Daily		  
02-Mar-23 10:00 02-Mar-23 16:00 ATCO TE 722s Crystal Lake 144 kV breakers - relay testing 6 Hours
Continuous		  
02-Mar-23 13:00 02-Mar-23 17:00 ALTALINK TE 852s RTU/SCADA (852s Round Hill), AltaLink TPR Outage, AltaLink MPLS card replacement 4 Hours
Daily		  
03-Mar-23 08:00 03-Mar-23 12:00 ENMAX Outage 25B240-D140 (SS-25) HV breaker SF6 gas sample 4 Hours
Continuous		  
03-Mar-23 08:00 03-Mar-23 16:00 ALTALINK TE 54s RTU/SCADA (54s Fort Saskatchewan), AltaLink TPR Outage, AltaLink MPLS upgrade MPLS nodes and card replacement 8 Hours
Daily		  
03-Mar-23 12:00 03-Mar-23 16:00 ENMAX Outage 25B240-D141 (SS-25) HV breaker SF6 gas sample 4 Hours
Continuous		  

Prepared On:   2023-02-22   15:45:50

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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