Alberta Electric System Operator
System Co-ordination Plan
2023-07-22 to 2023-07-30
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		  
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 18-Aug-23 17:00 ATCO Outage 769s 704C (769s Stettler) forced outage troubleshooting and repair of breaker 704 114.38 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-Oct-23 23:00 ATCO Outage 840s McNeill Station filter bank forced outage 155.61 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 24-Jul-23 16:00 ENMAX Outage 3.82L (SS-3 - SS-8), 3B138-3.82 (SS-3) water main upgrades, road construction 19.33 Days
Continuous		  
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		  
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 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 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 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		  
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 27-Jul-23 16:00 ENMAX Outage 43.2TR (SS-43) transformer maintenance and testing 8.33 Days
Continuous		  
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		  
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 635PL7-1003 (635EDD-1000 - 635EDD-1004) urgent perform 6year testing and maintenance of transformer; 635PT-1029 1.54 Days
Continuous		  
24-Jul-23 04:00 25-Jul-23 17:00 SUNCOR Outage 635PL7-1002 (635EDD-1000 - 635EDD-1004) urgent perform 6 year testing and maintenance of transformer 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 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 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 and power factor test
 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 Battle River), 6L08 (756s Bigfoot - 757s Battle River), 756s Bigfoot 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 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 09:30 24-Jul-23 17:00 ATCO TE 720s 902T (720s Wabasca), 720s Protection & Control (720s Wabasca) 902T LTC settings update 7.5 Hours
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 701 (822s Wolf Lake), 826s 7L587D1 (826s Marguerite Lake), 826s 710 (826s Marguerite Lake), 826s 707 (826s Marguerite Lake) 822S Wolf lake P&C and SCADA upgrade and breaker work
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 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 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 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) 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, 723s RTU/SCADA (723s Christina Lake) 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, 8 Hours
Continuous		  
25-Jul-23 08:00 31-Jul-23 12:00 ATCO TE 813s RTU/SCADA (813s Little Smoky) SCADA commissioning 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 9.83L (SS-9 - SS-43), 43B138-9.83 (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 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
4 Hours
Continuous		  
25-Jul-23 10:00 26-Jul-23 17:00 ATCO TE 939s 1214R (939s Livock), 939s Protection & Control (939s Livock), 939s 1216R (939s Livock), 939s 1213R (939s Livock) GE will perform inspection and maintenance on DGA unit 31 Hours
Continuous		  
25-Jul-23 10:00 25-Jul-23 16:00 ATCO, CNRL TE ATCO TPR Outage, ATCO RTU/SCADA, 859s RTU/SCADA (859s Primrose) adding new RS232 cards to the hot standby Aprisa 900 Mhz radio carrier 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 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 60 Mins
Continuous		  
25-Jul-23 11:01 21-Aug-23 17:00 ATCO Outage 7L143 (766s Nevis - 769s Stettler), 7L16 (766s Nevis - 948s Heatburg) 766S Nevis Rebuild Project - P&C wiring and commissioning 27.25 Days
Continuous		  
25-Jul-23 11:01 04-Dec-23 17:00 ATCO Outage 766s 901T (766s Nevis) 766S Nevis Rebuild Project 132.29 Days
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) breaker maintenance planned on 356s252 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 3 Hours
Continuous		  
25-Jul-23 13:30 31-Jul-23 14:00 ATCO Outage 7L760 (767s Oyen - 7LA760 tap) pole change from test 6.02 Days
Continuous		  
25-Jul-23 16:00 25-Sep-23 17:00 ATCO Outage 822s 144kV Bus (822s Wolf Lake), 7L574 (822s Wolf Lake - 7L574 tap), 822s 701T (822s Wolf Lake), 822s 702 (822s Wolf Lake), 822s 704 (822s Wolf Lake) 822S Wolf lake P&C and SCADA upgrade
and breaker replacements		 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 18:00 Syncrude Outage ML2 (Syncrude Mildred Lake - UE-1 Syncrude Plant 30-2), 72kV A Bus (D05), UE-1 (D05 - UE-1 Syncrude Plant 30-2), D05 71 (D05), D05 73 (D05), D05 75 (D05), D05 75A (D05), D05 79 (D05), D05 80 (D05), LCF (D05), ML4 (D05) change the bus differential relay setting 10 Hours
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 08:00 26-Jul-23 17:00 ALTALINK TE 320p RTU/SCADA (320P Keephills) control IED troubleshoot and correct 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 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 18:00 Syncrude Outage 72kV B Bus (D05), ML1 (D05 - Syncrude Mildred Lake), ML3 (D05 - N11 Syncrude), D05 78 (D05), D05 77 (D05), D05 76 (D05) change differential relays settings 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), 31B138-31.84 (SS-31) HV breaker SF6 gas sample 4 Hours
Continuous		  
27-Jul-23 09:00 27-Jul-23 16:00 ATCO TE 950s RTU/SCADA (950s Germain) replace sar mux 7 Hours
Continuous		  
27-Jul-23 09:30 27-Jul-23 12:00 ALTALINK, AIRLIQUIDE TE 409s RTU/SCADA (409s Shell Scotford), 408s RTU/SCADA (408s Air Liquide 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 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 03-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 6.5 Days
Continuous		  
28-Jul-23 07:00 05-Aug-23 18:00 ALTALINK Outage 199L (268s Whitecourt - 199AL tap), 268s 199N (268s Whitecourt) 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 30-Jul-23 17:00 ATCO Outage 710s 703T (710s Vermilion), 710s 705 (710s Vermilion) 710S 25kv bus repair 2.29 Days
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:   2023-07-21   4:26:06 PM

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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