Alberta Electric System Operator
System Co-ordination Plan
2023-07-20 to 2023-07-28
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		  
14-Mar-22 14:00 31-Dec-23 18:00 ATCO TE 813s SVC (813s Little Smoky) emergency real time failed relay 657.21 Days
Continuous		  
18-Apr-22 08:00 31-Aug-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 500.38 Days
Continuous		  
18-Apr-22 08:00 31-Aug-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 500.38 Days
Continuous		  
04-Sep-22 16:50 30-Sep-24 18:00 ATCO Outage 848s 401R (848s Ruth Lake) forced outage 757.05 Days
Continuous		  
03-Jan-23 12:00 18-Aug-23 16:00 ENMAX Outage 14.2C (SS-14) forced outage 227.13 Days
Continuous		  
24-Feb-23 08:00 31-Aug-23 16:00 ALTALINK Outage 74s C2 (74s Janet) parts unavailability 188.29 Days
Continuous		  
15-Mar-23 18:01 30-Aug-23 18:00 SUNCOR Outage 29EDD-71 752-4651 (29EDD-71) breaker will remain offline for undetermined period of time 168 Days
Continuous		  
03-Apr-23 10:00 21-Jul-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) RTU configuration updates 109.29 Days
Continuous		  
13-Apr-23 10:00 31-Jul-23 18:00 ATCO IO 840S 505 FA3 Forced outage Transfer limit 90MW
investigate/repair breaker 505 due to lockout, waiting for parts		 109.33 Days
Continuous		  
26-Apr-23 08:00 21-Jul-23 17:00 ATCO Outage 769s 704C (769s Stettler) forced outage troubleshooting and repair of breaker 704 86.38 Days
Continuous		  
03-May-23 05:25 01-Aug-23 18:00 ATCO Outage 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap) forced outage due to fire 90.52 Days
Continuous		  
17-May-23 17:01 31-Dec-23 17:00 EPCOR Outage 72RG7 (Garneau - Rossdale) faulted cable 228.04 Days
Continuous		  
29-May-23 08:20 31-Jul-23 23:00 ATCO Outage 840s McNeill Station filter bank forced outage 63.61 Days
Continuous		 AB-SK
05-Jun-23 07:00 28-Jul-23 17:00 EPCOR Outage 805s C1 (805s Jasper), EP 805s J2408 (EP 805s Jasper) Jasper: Emergency Investigation of J2408 Cap Bank Breaker 53.42 Days
Continuous		  
12-Jun-23 00:00 07-Aug-23 23:40 ALTALINK Outage 202L (58s Edson - 178s Cynthia) forced outage due to fire 56.99 Days
Continuous		  
12-Jun-23 00:00 01-Aug-23 00:00 ATCO, AESO-SC Outage 7L64 (747s Bassett - 930s Arcenciel), 7L64 (747s Bassett - 748s Haig River), 7L64 (748s Haig River - 779s Chinchaga River), 7L64 (779s Chinchaga River - 789s Keg River), 7L64-Pseudo (789s Keg River) forced outage due to fire 50 Days
Continuous		  
12-Jun-23 10:00 29-Dec-23 17:00 ATCO TE 766s RTU/SCADA (766s Nevis) nevis upgrade project
200.33 Days
Continuous		  
15-Jun-23 08:00 28-Jul-23 18:00 SUNCOR TE 29EDD-94 RTU/SCADA (29EDD-94 Voyageur) SCADA RTU changes and downloads 43.42 Days
Continuous		  
17-Jun-23 08:00 01-Sep-23 17:00 ATCO, ALTALINK TE ATCO RTU/SCADA, 394s RTU/SCADA (394s Empress) facility commissioning 76.38 Days
Continuous		  
19-Jun-23 07:00 04-Aug-23 17:00 EPCOR Outage 72MG16 (Garneau - Meadowlark), RG725 (Rossdale), G722 (Garneau), G724 (Garneau) RG7 and TX3 Zone, SF6 Gear Disassembly for RG7 Fault Location Testing 46.42 Days
Continuous		  
23-Jun-23 10:00 07-Nov-23 17:00 ATCO Outage 822s 701T (822s Wolf Lake), 822s 704 (822s Wolf Lake) P&C and SCADA upgrade
137.33 Days
Continuous		  
23-Jun-23 17:01 19-Dec-23 17:00 EPCOR Outage T3 (Garneau) TX3 LCR construction 179.04 Days
Continuous		  
29-Jun-23 13:00 10-Nov-23 17:30 ATCO RB 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) Fortis interchange project
HOP on 7L199 to tap up 750s near pole 89		 134.23 Days
Continuous		  
30-Jun-23 17:00 22-Jul-23 17:00 EPCOR RB 1058L (657s Summerside - EP 803s Lambton) steel structure refurbishment 22 Days
Continuous		  
30-Jun-23 17:00 22-Jul-23 17:00 ALTALINK, EPCOR IO 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap) aerial- steel structure refurbishment 22 Days
Continuous		  
30-Jun-23 17:01 22-Jul-23 17:00 EPCOR, ALTALINK Outage 1059AL (52s East Industrial - 1059L tap), 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap), 52s T1 (52s East Industrial), 52s E2401 (52s East Industrial), EP 803s L2404 (EP 803s Lambton), EP 803s L2401 (EP 803s Lambton) aerial- steel structure refurbishment 22 Days
Continuous		  
04-Jul-23 08:00 29-Jul-23 09:00 ALTALINK Outage 869L (163s Amoco Empress - 204s Sandy Point), 204s T1 (204s Sandypoint), 163s 869W (163s Amoco Empress), 204s 869E (204s Sandy Point) project work 25.04 Days
Continuous		  
04-Jul-23 13:00 31-Oct-23 17:30 ATCO IO 840s McNeill Station PQM at 840s McNeill to investigate voltage transients and harmonics 119.19 Days
Continuous		  
05-Jul-23 08:00 30-Jul-23 16:00 ENMAX Outage 3.82L (SS-3 - SS-8), 3B138-3.82 (SS-3) water main upgrades, road construction 25.33 Days
Continuous		  
10-Jul-23 07:00 21-Jul-23 18:00 ALTALINK TE 520s RTU/SCADA (520s Bennett) complete SCADA failover to install JBSEC(s), SEL-2440 alarm board(s) and complete the rewiring of physical security sensors 11.46 Days
Daily		  
10-Jul-23 08:00 11-Aug-23 17:00 ALTALINK TE 799s RTU/SCADA (799s Coleman) supervisory outages required to add and test new alarm points for 25kV breaker replacements and 170L metering upgrade 32.38 Days
Continuous		  
10-Jul-23 10:00 04-Dec-23 17:00 ATCO TE 766S 144kV Bus Protection, 766S 240kV Bus Protection 766S Nevis Rebuild Project - 144kV and 240kV Bus protections OOS for duration of project 147.33 Days
Continuous		  
10-Jul-23 10:00 04-Dec-23 17:00 ATCO TE 766s Protection & Control (766s Nevis) 766S Nevis Rebuild Project 147.33 Days
Continuous		  
10-Jul-23 13:00 24-Jul-23 17:00 ATCO Outage 7L143 (766s Nevis - 769s Stettler), 766s 703 (766s Nevis) 766S Nevis Rebuild Project - Upgrade bus to bundled 477, connect new 704A, 703/703CT P&C wiring and commissioning, 14.17 Days
Continuous		  
11-Jul-23 09:00 21-Jul-23 17:00 BCH RB 5L92 (BCH Cranbrook - BCH Selkirk) replace flashed insulators using BAREHAND methods 10.33 Days
Continuous		 AB-BC
14-Jul-23 06:00 27-Jul-23 18:00 SUNCOR Outage 29EDD-34 29-952-143 (29EDD-34), 29EDD-34 29-952-133 (29EDD-34), 29EDD-34 29-952-113 (29EDD-34), 29EDD-34 29-952-123 (29EDD-34) 29EDD34;29PP-45 system and 29PT-224 SSVT 13.5 Days
Continuous		  
14-Jul-23 07:30 21-Jul-23 17:30 ALTALINK RB 808L (13s Deerland - 808AL tap), 808L (171s Redwater - 808AL tap) install new foundations beside existing structures 7.42 Days
Daily		  
17-Jul-23 06:30 23-Jul-23 17:30 ENMAX, ALTALINK RB 771L (SS-47 - SS-162) Altalink outage - working on 918L in proximity to 771L 6.46 Days
Daily		  
17-Jul-23 06:30 23-Jul-23 17:30 ENMAX, ALTALINK RB 771L (SS-47 - SS-162) work in proximity to 771L 6.46 Days
Daily		  
17-Jul-23 07:00 20-Jul-23 17:00 EPCOR Outage 657s SU2402 (657s Summerside) SU2402 breaker maintenance and CT doble 3.42 Days
Continuous		  
17-Jul-23 07:00 21-Jul-23 17:00 EPCOR Outage T3 (Woodcroft), W724 (Woodcroft), W722 (Woodcroft) TX3 zone/W724 P&C maintenance 4.42 Days
Continuous		  
17-Jul-23 07:00 28-Jul-23 17:00 EPCOR Outage 987s T2 (987s Clover Bar), 987s CC721 (987s Clover Bar) TX2 DGA install 11.42 Days
Continuous		  
17-Jul-23 07:00 21-Jul-23 17:00 EPCOR Outage PM2405 (Poundmaker) Poundmaker S/S PM2405 bay 4.42 Days
Continuous		  
17-Jul-23 07:00 20-Jul-23 17:00 ALTALINK TE 213s RTU/SCADA (213s Hughenden) upgrade the current D400 HMI to an SMP HMI, test all alarms and controls, confirm all analog changes 3.42 Days
Daily		  
17-Jul-23 07:00 28-Jul-23 17:00 EPCOR Outage T3 (Meadowlark) S/S Tx3 bay isolation 11.42 Days
Continuous		  
17-Jul-23 08:00 23-Jul-23 18:00 ENMAX, ALTALINK Outage 918L (281s Johnson - SS-162) component repair and replacement structures 737-840 6.42 Days
Continuous		  
17-Jul-23 08:00 27-Jul-23 16:00 ATCO RB 12L41 (510s Sunnybrook - 939s Livock) aerial patrol 10.33 Days
Continuous		  
17-Jul-23 08:00 23-Jul-23 18:00 ENMAX, ALTALINK Outage 918L (281s Johnson - SS-162) Altalink outage component repair and replacement structures 737-840 6.42 Days
Continuous		  
17-Jul-23 08:00 27-Jul-23 16:00 ATCO, ALTALINK RB 1241L (510s Sunnybrook - 939s Livock) ATCO Aerial Patrol 10.33 Days
Daily		  
17-Jul-23 08:00 26-Jul-23 17:00 ALTALINK TE 895s RTU/SCADA (895s Suffield) RTU/HMI configuration changes to clean up deficiencies leftover from the project 9.38 Days
Daily		  
17-Jul-23 08:00 27-Jul-23 16:00 REDDEER Outage 247s T2 (247s Piper Creek) sub 17 T2-OLTC overhaul 10.33 Days
Continuous		  
17-Jul-23 08:00 22-Jul-23 17:00 ALTALINK Outage 574s T3 (574s Nilrem), 574s 1752 (574s Nilrem) add B Ph load side PT to 2035L (574s2035) and 2309L (574s2309) inside the SWGR 5.38 Days
Continuous		  
17-Jul-23 08:00 27-Jul-23 16:00 ATCO RB 12L44 (939s Livock - 951s Thickwood Hills) aerial patrol 10.33 Days
Continuous		  
17-Jul-23 08:30 21-Jul-23 17:30 ALTALINK RB 835L (384s Keystone - 835AL tap), 283s 835E (283s Violet Grove), 454s 835A (454s Buck Lake) urgent - prep work river is washing away str. 835L33 - proximity R/B 4.38 Days
Continuous		  
17-Jul-23 09:00 20-Jul-23 16:00 ATCO RB 7L09 (823s Wapiti - 7L03 tap) Changing rotten X Arms 3.29 Days
Continuous		  
17-Jul-23 09:00 22-Jul-23 16:00 ALTALINK TE 574s RTU/SCADA (574s Nilrem) update RTU configuration 5.29 Days
Daily		  
17-Jul-23 09:00 22-Jul-23 16:00 ALTALINK TE 574s Protection & Control (574s Nilrem) settings updates and input/output updates on A87/50/51/T3 & B87/50/51/51NN/T3 protections 5.29 Days
Daily		  
17-Jul-23 10:00 21-Jul-23 16:00 ATCO Outage 787s 702T (787s High Prairie), 787s 702 (787s High Prairie) transformer maintenance 4.25 Days
Continuous		  
17-Jul-23 10:00 21-Jul-23 16:00 ATCO TE 787s 702T (787s High Prairie) transformer maintenance 4.25 Days
Continuous		  
17-Jul-23 13:00 20-Jul-23 15:00 ATCO Outage 7L85 (801s Anderson - ATC 803s Bullpound), 801s 705 (801s Anderson) cross arm & insulator replacement 3.08 Days
Continuous		  
17-Jul-23 13:30 20-Jul-23 14:30 ALTALINK Outage 263s T1 (263s Strachan) T1 leaks, H2 turret leak, high side bushing low oil, doble, CT wiring test 3.04 Days
Continuous		  
18-Jul-23 08:00 20-Jul-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PT-1057 2.38 Days
Continuous		  
18-Jul-23 09:30 20-Jul-23 08:30 ATCO Outage 2075s 902T (2075s Newell), 2075s ACF21 (2075s Newell), 2075s ACF22 (2075s Newell), 2075s ACF23 (2075s Newell), 2075s ACF24 (2075s Newell) fire system testing in SVC2 1.96 Days
Continuous		  
19-Jul-23 07:00 28-Jul-23 15:00 ALTALINK Outage 283s 835E (283s Violet Grove), 835L (283s Violet Grove - 835AL tap) URGENT River is washing away 835L33. Site set up. Notification has been upgraded to *P6 9.33 Days
Continuous		  
19-Jul-23 08:00 23-Jul-23 18:00 SUNCOR TE 29PL9-6 (29EDD-1 Millennium - 29EDD-34) tie in CT circuit for new DFR 4.42 Days
Continuous		  
19-Jul-23 08:00 20-Jul-23 17:00 ATCO Outage 6L09 (767s Oyen - 6L21 tap), 767s 601 (767s Oyen) pole/arm change on 6L09B-586 to 6L09B-591(6 structures) 1.38 Days
Continuous		  
19-Jul-23 08:00 20-Jul-23 16:00 ENMAX TE Protection & Control (SS-39) 39sub 138 kV bus differential protection Outage, CT terminal block replacement 39B138-38.83 1.33 Days
Daily		  
19-Jul-23 08:00 20-Jul-23 16:00 ENMAX Outage 15.60L (SS-15 - SS-21), 15B69-15.60 (SS-15), 21B69-15.60 (SS-21) HV breaker maintenance 15B69-15.60 1.33 Days
Continuous		  
19-Jul-23 08:00 27-Jul-23 16:00 ENMAX Outage 43.2TR (SS-43) transformer maintenance and testing 8.33 Days
Continuous		  
20-Jul-23 07:30 20-Jul-23 17:30 ALTALINK Outage 434L (65s High River - 237s Foothills), 65s 434 (65s High River), 237s 434 (237s Foothills) urgent - change settings on 65s T1 and test operate 65s434 10 Hours
Daily		  
20-Jul-23 08:00 07-Nov-23 15:30 REDDEER Outage 217s T2 (217s North Red Deer) 217s 14T2 containment upgrade and transformer replacement 110.35 Days
Continuous		  
20-Jul-23 08:00 20-Jul-23 17:00 ALTALINK TE 65s Protection & Control (65s High River) changing settings on T1 A87/50/51/T1 9 Hours
Daily		  
20-Jul-23 08:00 20-Jul-23 12:30 ALTALINK Outage 37s 138kV Bus (37s North Calder), 37s T6 (37s North Calder), 37s T5 (37s North Calder), 37s 4 (37s North Calder) replace risers from 37s T5 to 37s1 for urgent 37s T5 replacement work 4.5 Hours
Continuous		  
20-Jul-23 08:00 20-Jul-23 16:00 ENMAX Outage 6.82L (SS-6 - SS-41), 41B138-6.82 (SS-41), 6B138-6.82 (SS-6) HV breaker power factor test 41B138-6.82 8 Hours
Continuous		  
20-Jul-23 10:30 20-Jul-23 11:30 Lethbridge TE Lethbridge ICCP Outage performing diagnostics tests on HA failover on FG-PCC1 and FG-PCC2 60 Mins
Continuous		  
21-Jul-23 08:00 21-Jul-23 16:00 ENMAX Outage 14.83L (SS-14 - SS-36), 16.63L (SS-16 - SS-36), 36.2TR (SS-36), 36B138-36BT3 (SS-36), 36B69-16.63/36.5TR (SS-36), 36B138-14.83 (SS-36), SW84 (SS-36), 14B138-14.83 (SS-14), 16B69-16.63 (SS-16) power factor test 36PT138-Z32 8 Hours
Continuous		  
21-Jul-23 10:00 21-Jul-23 17:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) 766S Nevis Rebuild Project - hot line crew connect 902S Mobile Sub to 7L16 7 Hours
Continuous		  
22-Jul-23 08:00 24-Jul-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PT-1062 2.38 Days
Continuous		  
22-Jul-23 08:00 23-Jul-23 18:00 ENMAX, ALTALINK Outage 1109L (SS-25 - SS-65), 65B240-D134 (SS-65), 65B240-D135 (SS-65) summer substation washing 1.42 Days
Continuous		  
22-Jul-23 09:30 22-Jul-23 17:30 ATCO TE 822s Protection & Control (822s Wolf Lake) settings changes to 21B/7L587, 21B/7L86 8 Hours
Continuous		  
24-Jul-23 04:00 25-Jul-23 17:00 SUNCOR Outage 635EDD-1000 635-752-162 (635EDD-1000), 635EDD-1000 635-752-163 (635EDD-1000) FH-Breaker will be operated to open and close 635PS-1063 for performing 6Y testing and maintenance of Transformer; 635PT-1029 during Turnaround. Breaker outage is intermittent and will be back in service after operating the disconnected switch 1.54 Days
Continuous		  
24-Jul-23 04:00 25-Jul-23 17:00 SUNCOR Outage 635EDD-1000 635-752-152 (635EDD-1000), 635EDD-1000 635-752-153 (635EDD-1000) FH-Breaker will be operated to open and close 635PS-1062 for performing 6Y testing and maintenance of Transformer; 635PT-1028 during Turnaround. Breaker outage is intermittent and will be back in service after operating the disconnected switch 1.54 Days
Continuous		  
24-Jul-23 07:00 26-Jul-23 17:00 EPCOR Outage 657s SU2401 (657s Summerside) SU2401 breaker maintenance and CT doble 2.42 Days
Continuous		  
24-Jul-23 07:00 03-Aug-23 17:00 EPCOR Outage T2 (Rossdale), R721 (Rossdale), R723 (Rossdale), RAB2 (Rossdale) Rossdale TX2 LCR demo 10.42 Days
Continuous		  
24-Jul-23 07:00 02-Aug-23 19:00 ATCO RB 6L03 (757s Battle River - 6L17 tap), 6L03 (775s Sullivan Lake - 6L17 tap) HOP to install rider poles and string over 6L03 with the new 9LA93 circuit 9.5 Days
Continuous		  
24-Jul-23 07:00 01-Aug-23 17:00 EPCOR Outage T3 (Namao), 72CN10 (987s Clover Bar - Namao), N723 (Namao), N724 (Namao), NDS11 (Namao), NDS3 (Namao), 987s CN723 (987s Clover Bar) TX3 zone P&C maintenance and breaker fail upgrade cutovers 8.42 Days
Continuous		  
24-Jul-23 08:00 24-Jul-23 16:00 ALTALINK TE 215L (38s East Edmonton - 215AL tap), 215L (286s Yasa - 215AL tap), 215AL (309s Anthony Henday - 215AL tap) investigate and correct GPS fail alarm 8 Hours
Daily		  
24-Jul-23 08:00 27-Jul-23 17:00 ALTALINK TE 38s RTU/SCADA (38s East Edmonton) finalizing SSAC installation at site 3.38 Days
Daily		  
24-Jul-23 08:00 27-Jul-23 17:00 ALTALINK TE 370s RTU/SCADA (370s North Lethbridge) finalize JB SEC installation in building #2 at 370s 3.38 Days
Daily		  
24-Jul-23 08:00 24-Jul-23 17:00 ATCO TE 720s 902T (720s Wabasca), 720s Protection & Control (720s Wabasca) 902T LTC settings require an update in the voltage setpoint 9 Hours
Continuous		  
24-Jul-23 08:00 24-Jul-23 12:00 ENMAX Outage 2.82L (SS-2 - SS-5) transitioning from JMUX to JPAX in fiber ring 1 4 Hours
Continuous		  
24-Jul-23 08:00 24-Jul-23 16:00 ENMAX TE Protection & Control (SS-7) relay protection test
 8 Hours
Continuous		  
24-Jul-23 08:00 26-Jul-23 16:00 ENMAX Outage 16.60L (SS-16 - SS-34), 16B69-16.60 (SS-16), 34B69-16.60 (SS-34) HV breaker maintenance 34B69-16.60. HV breaker maintenance 16B69-16.60. HV Breaker Power Factor Test - 16B69-16.60
 2.33 Days
Continuous		  
24-Jul-23 08:30 24-Jul-23 17:00 ALTALINK TE 309s RTU/SCADA (309s Anthony Henday) RTU firmware reload to attempt to stop HMI crashing issues 8.5 Hours
Daily		  
24-Jul-23 09:00 24-Jul-23 18:00 ALTALINK Outage 309s T2 (309s Anthony Henday), 309s 252 (309s Anthony Henday) repair oil leak on 309s T2 9 Hours
Continuous		  
24-Jul-23 09:00 15-Dec-23 17:30 ATCO TE 766s Protection & Control (766s Nevis) modify protections for 901T replacement project 144.4 Days
Continuous		  
24-Jul-23 09:00 28-Jul-23 16:00 BCH Outage 2L293 (BCH Nelway - BCH Selkirk) maintenance 4.29 Days
Continuous		 AB-BC
24-Jul-23 09:00 24-Jul-23 17:30 ATCO TE 9L46 (932s Pemukan - 959s Lanfine) isolate 9L46 A & B protection at 363s Sedalia to facilitate the customer work 8.5 Hours
Continuous		  
24-Jul-23 09:30 25-Jul-23 17:30 ATCO Outage 757S 605, 757s 605 (757s Battle River), 6L08 (756s Bigfoot - 757s Battle River) breaker 605 vacuum HSV partial / complete testing 1.33 Days
Continuous		  
24-Jul-23 09:30 25-Jul-23 19:00 ATCO Outage 931s 701T (931s Bohn), 931s 701 (931s Bohn) Transformer Class 2 Major Testing 701T 1.4 Days
Continuous		  
24-Jul-23 09:30 26-Jul-23 17:30 ATCO TE 970s Protection & Control (970s Bourque) turn 7L574 into a 2-terminal network 970s to 859s, both A and B protection 2.33 Days
Continuous		  
24-Jul-23 10:00 24-Jul-23 17:00 ATCO Outage 710s 702T (710s Vermilion) load transfer 5L05 to 5L576, connect temp CT's 500CT to 500D1 7 Hours
Continuous		  
24-Jul-23 10:00 04-Aug-23 10:00 ATCO Outage 813s SVC (813s Little Smoky), 813s 706 (813s Little Smoky), 813s 712 (813s Little Smoky), 813s 719 (813s Little Smoky) protection cutover for 5&7 harmonic relays for SVC, wiring in 703T CT circuit 11 Days
Continuous		  
24-Jul-23 10:00 25-Jul-23 17:00 ATCO Outage 7L587 (822s Wolf Lake - 826s Marguerite Lake) 822S Wolf lake P&C and SCADA Upgrade
31 Hours
Continuous		  
24-Jul-23 10:00 03-Aug-23 18:00 ALTALINK Outage 901L (63s Red Deer - 901AL tap), 901L (74s Janet - 901AL tap), 901AL (64s East Crossfield - 901L tap), 64s 240kV Bus (64s East Crossfield), 64s T2 (64s East Crossfield), 64s 901 (64s East Crossfield), 64s 30 (64s East Crossfield) Replace 64s29, 64s28 and CVT1 (64s32) 10.33 Days
Continuous		  
24-Jul-23 10:00 25-Jul-23 16:00 ATCO Outage 813s 715 (813s Little Smoky), 813s 715C (813s Little Smoky) breaker maintenance 30 Hours
Continuous		  
24-Jul-23 10:00 28-Jul-23 16:00 ATCO Outage 7L46 (813s Little Smoky - 845s Big Mountain), 845s 708 (845s Big Mountain), 845s 709 (845s Big Mountain), 845S 7L46D2 (845s Big Mountain) breaker maintenance and switch inspections 4.25 Days
Continuous		  
24-Jul-23 10:00 03-Aug-23 18:00 ALTALINK TE 64s Protection & Control (64s East Crossfield) P&C Assessment for 64s 240kV BUS outage 10.33 Days
Continuous		  
24-Jul-23 10:00 24-Jul-23 17:00 ATCO RB 7L39 (722s Crystal Lake - 7LA39 tap), 7LA39 (728s Mercer Hill - 7L39 tap), 7L39 (811s Clairmont Lake - 7LA39 tap) attach mobile sub at Mercer Hill due to real time outage 7 Hours
Continuous		  
24-Jul-23 11:00 11-Aug-23 17:00 BCH Outage 2L293 (BCH Nelway - BCH Selkirk) replace timbers BC maintenance does not affect the Alberta ATC 18.25 Days
Continuous		 AB-BC
24-Jul-23 11:00 11-Aug-23 17:00 ALTALINK IO 2L293(NLY-SEL) OOS for BCH (info) BCH work. 18.25 Days
Continuous		  
24-Jul-23 11:00 27-Jul-23 17:00 ALTALINK TE 138s RTU/SCADA (138s Windy Flats) replace failing RTU/HMI with an upgraded version of the device to stop the CPU overload causing power cycling 3.25 Days
Daily		  
24-Jul-23 12:00 27-Jul-23 17:30 ATCO RB 9L912 (63s Red Deer - 766s Nevis) AltaLink is conducting maintenance on 63s852 3.23 Days
Continuous		  
24-Jul-23 12:01 24-Jul-23 16:00 ENMAX Outage 2.84L (SS-2 - SS-8) transitioning from JMUX to JPAX in fiber ring 1
 3.98 Hours
Continuous		  
24-Jul-23 12:30 27-Jul-23 17:30 ALTALINK Outage 63s 852 (63s Red Deer) 1st trip PRC 5 maintenance 3.21 Days
Continuous		  
24-Jul-23 12:30 27-Jul-23 17:30 ALTALINK Outage 127s T2 (127s Bruderheim) fix leaks, maintain, doble, tap changer oil leaks 3.21 Days
Continuous		  
24-Jul-23 13:00 04-Aug-23 17:00 ATCO Outage 939s 903T (939s Livock), 939s 910 (939s Livock), 939s 911 (939s Livock) 903T Maintenance 11.17 Days
Continuous		  
24-Jul-23 13:00 28-Jul-23 17:30 ATCO TE 939s RTU/SCADA (939s Livock) upgrade SMP firmware
4.19 Days
Continuous		  
24-Jul-23 13:00 25-Jul-23 17:00 ALTALINK TE 37s RTU/SCADA (37s North Calder) update configuration for urgent 37s T5 replacement. 28 Hours
Daily		  
24-Jul-23 14:00 24-Jul-23 17:00 ALTALINK TE AltaLink Radio Station, 1047L (574s Nilrem - 650s Hansman Lake) Card replacement. Affects 1047L A prot, 3 Hours
Daily		  
25-Jul-23 08:00 25-Jul-23 12:00 ATCO Outage ATC 793s 707C (ATC 793s West Peace River) prc-005 trip coil testing 4 Hours
Continuous		  
25-Jul-23 08:00 26-Jul-23 17:00 ALTALINK Outage 1036L (356s Milo - 554s Travers), 691L (74s Janet - 419s Chestermere) install new concrete caisson foundation for new structure 1 on 1036L 1.38 Days
Continuous		  
25-Jul-23 08:00 26-Jul-23 17:00 ATCO TE 804s Protection & Control (804s Wintering Hills) 87L-21A/7L153 requires commissioning as per customer request. 1.38 Days
Continuous		  
25-Jul-23 08:00 25-Jul-23 17:00 ALTALINK TE AltaLink Telecom Equipment Upgrade 723s MPLS node. 9 Hours
Daily		  
25-Jul-23 08:00 25-Jul-23 16:00 ATCO TE 882s RTU/SCADA (882s Triangle), ATCO Telecom Equipment Will replace SAR MUX at 882s Triangle sub, The SCADA RTU will be affected for duration 8 Hours
Continuous		  
25-Jul-23 08:00 31-Jul-23 12:00 ATCO TE 813s RTU/SCADA (813s Little Smoky) SCADA Commissioning for building alarms and DFR1/DFR2. SMP controller may need configuration updates. 6.17 Days
Continuous		  
25-Jul-23 08:00 25-Jul-23 12:00 ENMAX Outage 26.81L (SS-26 - SS-32) Transitioning from JMUX to JPAX in Fiber Ring 1
 4 Hours
Continuous		  
25-Jul-23 08:00 25-Jul-23 16:00 ENMAX Outage 43B138-9.83 (SS-43), 9.83L (SS-9 - SS-43) Power factor test 43B138-9.83
 8 Hours
Continuous		  
25-Jul-23 08:00 27-Jul-23 16:00 ENMAX Outage 33.1TR (SS-33) relay protection test - 33RLY138-33.1TR A GE, 33RLY138-33.1TR S SEL_F/W upgrade required
 2.33 Days
Continuous		  
25-Jul-23 08:00 27-Jul-23 18:00 SUNCOR TE 29PL6-5 (29EDD-1 Millennium - 29EDD-2 Tar Island) BP - Transfer trip alarm 311L protection outage for alarm contact change 2.42 Days
Continuous		  
25-Jul-23 09:00 28-Jul-23 17:00 BCH Outage 2L293 (BCH Nelway - BCH Selkirk) inspections BC maintenance does not affect the Alberta ATC 3.33 Days
Continuous		 AB-BC
25-Jul-23 09:00 26-Jul-23 17:00 ALTALINK IO 2L293(SEL2MB2-SEL2D25) OOS for BCH (info BCH work. 1.33 Days
Continuous		  
25-Jul-23 09:00 25-Jul-23 18:00 SUNCOR TE 29EDD-2 RTU/SCADA (29EDD-2 Tar Island) BP - Replace 29EDD-2 GPS clock unit, 29EDD-2 GPS signal will be lost during unit replacement 9 Hours
Continuous		  
25-Jul-23 10:00 25-Jul-23 14:00 ATCO RB 822S 144kv Breaker Relays 822S Wolf lake P&C and SCADA Upgrade
Live line work to connect 7L86/7L574 bypass		 4 Hours
Continuous		  
25-Jul-23 10:00 21-Aug-23 17:00 ATCO Outage 7L143 (766s Nevis - 769s Stettler), 7L16 (766s Nevis - 948s Heatburg), 766s 901T (766s Nevis), 766s 701T (766s Nevis) 766S Nevis Rebuild Project - P&C wiring and commissioning 7L16 and 701T protection upgrade, refurbish 701T tapchanger, replace 500D1/D2, and Bkr 502 27.29 Days
Continuous		  
25-Jul-23 10:00 25-Jul-23 17:00 ATCO TE 939S 1213R, 939S 1214R, 939S 1216R GE will perform inspection and maintenance on DGA unit 7 Hours
Continuous		  
25-Jul-23 10:00 25-Jul-23 16:00 ATCO TE ATCO TPR Outage, ATCO RTU/SCADA ADDING NEW RS232 cards to the Hot standby Aprisa 900 Mhz radio carrier between Wolf Lake sub and Primrose sub. 6 Hours
Continuous		  
25-Jul-23 10:00 25-Jul-23 17:00 ALTALINK TE AltaLink Telecom Equipment Satellite has failed and needs to be repaired. No outage - currently on PLC communication. 7 Hours
Daily		  
25-Jul-23 10:00 25-Jul-23 11:00 ATCO, ALTALINK Outage 9L912 (63s Red Deer - 766s Nevis), 9L20 (755s Cordel - 766s Nevis), 7L16 (766s Nevis - 948s Heatburg), 7L143 (766s Nevis - 769s Stettler), 766s 901T (766s Nevis), 766s 701T (766s Nevis), 63s 912E (63s Red Deer), 755s 9L20D1 (755s Cordel), 766s 902 (766s Nevis), 766s 901 (766s Nevis) 766S Nevis Rebuild Project - P&C wiring and commissioning 7L16 and 701T protection upgrade, refurbish 701T tapchanger, replace 500D1/D2, and Bkr 502 60 Mins
Continuous		  
25-Jul-23 12:00 25-Jul-23 16:00 ENMAX Outage 41.84L (SS-41 - SS-54) Transitioning from JMUX to JPAX in Fiber Ring 1
 4 Hours
Continuous		  
25-Jul-23 12:30 25-Jul-23 14:30 ALTALINK Outage 356s 252 (356s Milo) 1st trip and PRC5 maintenance 2 Hours
Daily		  
25-Jul-23 12:30 25-Jul-23 14:30 ATCO, ALTALINK RB 923L (356s Milo - 2075s Newell) AltaLink advice- breaker maintenance planned on 356s252 and will need recloser blocked on 9L923 at 2075s 2 Hours
Continuous		  
25-Jul-23 13:00 25-Jul-23 16:00 ATCO RB 7L587 (822s Wolf Lake - 826s Marguerite Lake), 7L86 (822s Wolf Lake - 1200s Foster Creek) 822S Wolf lake P&C and SCADA Upgrade
Live line work to connect 144kV bypass 7L86 to 7L587		 3 Hours
Continuous		  
25-Jul-23 13:30 31-Jul-23 14:00 ATCO Outage 7L760 (767s Oyen - 7LA760 tap) Pole change from test and treat 7L760 structures 406, 408, 409, 450, 455, 460, 461, 468, 471, 479, 494.
Pole change for clearance mitigation 7L760 structures 480, 492, 493		 6.02 Days
Continuous		  
25-Jul-23 16:00 25-Sep-23 17:00 ATCO Outage 7L574 (822s Wolf Lake - 7L574 tap), 7L587 (822s Wolf Lake - 826s Marguerite Lake), 7L86 (822s Wolf Lake - 1200s Foster Creek), 822s 701 (822s Wolf Lake), 822s 702 (822s Wolf Lake), 822s 703 (822s Wolf Lake), 822s 704 (822s Wolf Lake), 822s 701A (822s Wolf Lake), 822s 702A (822s Wolf Lake), 822s 703A (822s Wolf Lake) 822S Wolf lake P&C and SCADA Upgrade
Replace breakers 701, 702, and associated CT's, rewire 703, upgrade line protections
(Primrose fed from 970S Borque, Foster Creek fed from 826S Marguerite Lake via bypass)		 62.04 Days
Continuous		  
26-Jul-23 07:00 28-Jul-23 18:00 ALTALINK Outage 838L (14s Devon - 325s Leduc), 325s 838 (325s Leduc), 14s 838X (14s Devon) install 2 new structures 119 & 119A, and salvage old structure 119 2.46 Days
Continuous		  
26-Jul-23 08:00 26-Jul-23 16:00 ATCO TE 787s RTU/SCADA (787s High Prairie), 882s RTU/SCADA (882s Triangle) replace sar mux at High Prairie sub 8 Hours
Continuous		  
26-Jul-23 08:00 26-Jul-23 17:00 ALTALINK TE 180s RTU/SCADA (180s Cope Creek) removing T1, and T2 metering equipment from site 9 Hours
Daily		  
26-Jul-23 08:00 26-Jul-23 16:00 ENMAX Outage 13.2TR (SS-13) damaged plexiglass under the secondary cabinet, secondary cable replacement job prep
8 Hours
Continuous		  
26-Jul-23 08:00 27-Jul-23 16:00 ENMAX IO SS-65 power factor test - SSTR65-1C, - SSTR65-1E, - SSTR65-1W 1.33 Days
Continuous		  
26-Jul-23 08:00 26-Jul-23 17:00 ALTALINK, EPCOR TE AltaLink Telecom Equipment, EP 803s Protection & Control (EP 803s Lambton) MDA replacement on MPLS node 9 Hours
Daily		  
26-Jul-23 09:30 27-Jul-23 17:30 ALTALINK Outage 320p 652 (320p Keephills) 1st trip & PRC5 maintenance, fix leaks 1.33 Days
Continuous		  
26-Jul-23 09:30 26-Jul-23 17:30 ATCO TE 859s Primrose turn 7L574 into a 2-terminal network 970s to 859s, both A and B protection 8 Hours
Continuous		  
26-Jul-23 10:00 28-Jul-23 17:00 ATCO Outage 710s 703T (710s Vermilion), 710s 705 (710s Vermilion) 710S 25kv bus repair 2.29 Days
Continuous		  
26-Jul-23 10:00 26-Jul-23 16:00 ATCO Outage 813s 708 (813s Little Smoky) PRC-005 trip coil testing 6 Hours
Continuous		  
26-Jul-23 10:00 26-Jul-23 11:00 ATCO TE 717s RTU/SCADA (717S Ethel Lake), 846s Grand Centre RTU/SCADA, 940s RTU/SCADA (940s Beartrap) maintenance 60 Mins
Continuous		  
26-Jul-23 10:00 26-Jul-23 18:00 ATCO Outage 6L37 (724s Hines Creek - 800s Friedenstal), 6L16 (724s Hines Creek - 861s Eureka River), 800s 601 (800s Friedenstal), 724s 601 (724s Hines Creek) replace H structure 6L37 at George lake
, outage also affects 6L16 from 724S to 861S		 8 Hours
Continuous		  
27-Jul-23 06:00 27-Jul-23 18:00 ALTALINK Outage 54s T3 (54s Fort Saskatchewan) upgrade arrestor grounding conductor and design for transformer 12 Hours
Continuous		  
27-Jul-23 07:00 27-Jul-23 17:00 EPCOR Outage T2 (Poundmaker), PM2401 (Poundmaker), PM2405 (Poundmaker) Poundmaker: TX2 Zone CVT Doble 10 Hours
Continuous		  
27-Jul-23 08:00 27-Jul-23 17:00 ATCO TE 862s RTU/SCADA (862s South Bezanson), 862s Protection & Control (862s South Bezanson) RTU updates
 9 Hours
Continuous		  
27-Jul-23 08:00 27-Jul-23 16:00 ENMAX Outage 1.82L (SS-1 - SS-5) x-raying in manholes 8 Hours
Continuous		  
27-Jul-23 08:00 27-Jul-23 12:00 ENMAX Outage 31.84L (SS-31 - SS-32), 32B138-31.84 (SS-32) HV breaker SF6 Gas Sample - 32B138-31.84. 32B138-31.84 counter not working on this breaker
4 Hours
Continuous		  
27-Jul-23 09:00 27-Jul-23 16:00 ATCO TE 950s RTU/SCADA (950s Germain) Replace sar mux at 950S Germain SCADA affected 4-8 hours, Techs on site 7 Hours
Continuous		  
27-Jul-23 09:30 27-Jul-23 12:00 ALTALINK TE 409s RTU/SCADA (409s Shell Scotford), AltaLink Telecom Equipment Upgrade MPLS node. 2.5 Hours
Daily		  
27-Jul-23 10:00 27-Jul-23 16:00 ATCO Outage 813S 709, 813s 709 (813s Little Smoky) PRC-005 TRIP COIL TESTING 6 Hours
Continuous		  
27-Jul-23 10:00 28-Jul-23 16:00 ATCO Outage 848s 905 (848s Ruth Lake) investigative testing on Nissin CTs 30 Hours
Continuous		  
27-Jul-23 12:00 27-Jul-23 16:00 ENMAX Outage 32B138-32BT5 (SS-32) HV breaker SF6 gas sample
 4 Hours
Continuous		  
28-Jul-23 07:00 28-Jul-23 17:00 ALTALINK Outage 170L (632s Russell - 799s Coleman) replace strain glass on 170L 10 Hours
Daily		 AB-BC
28-Jul-23 07:00 05-Aug-23 18:00 ALTALINK Outage 199L (268s Whitecourt - 199AL tap) urgent structure replacements 8.46 Days
Continuous		  
28-Jul-23 08:00 30-Jul-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PT-1058 2.38 Days
Continuous		  
28-Jul-23 08:00 28-Jul-23 18:00 ENMAX, ALTALINK Outage 1080L (SS-25 - SS-65), 240kV West Bus (SS-25), 25B240-D142 (SS-25), 25B240-D139 (SS-25), 25B240-D138 (SS-25), 25B240-D136 (SS-25), 25B240-D133 (SS-25) summer substation washing 10 Hours
Continuous		  
28-Jul-23 08:00 28-Jul-23 17:00 ALTALINK TE 71s RTU/SCADA (71s Lamoureux) alarm renaming for ICSS project 9 Hours
Daily		  
28-Jul-23 08:00 28-Jul-23 16:00 ENMAX Outage 1.84L (SS-1 - SS-5) x-raying in manholes 8 Hours
Continuous		  
28-Jul-23 10:00 28-Jul-23 17:30 ATCO TE 809s RTU/SCADA (809s Louise Creek), 809s Protection & Control (809s Louise Creek) update multiple devices at 809s Louise Creek 7.5 Hours
Continuous		  
28-Jul-23 12:00 31-Jul-23 17:00 ALTALINK TE 438s RTU/SCADA (438s Westlock) RTU/HMI installation 3.21 Days
Daily		  

Prepared On:   2023-07-19   15:45:19

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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