Alberta Electric System Operator
System Co-ordination Plan
2023-10-12 to 2023-10-20
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		  
04-Sep-22 16:50 30-Sep-24 18:00 ATCO Outage 848s 401R (848s Ruth Lake) forced outage 757.05 Days
Continuous		  
15-Mar-23 18:01 01-Mar-24 18:00 SUNCOR Outage 29EDD-71 752-4651 (29EDD-71) breaker will remain offline for undetermined period of time 352.04 Days
Continuous		  
03-May-23 05:25 02-Jan-24 18:00 ATCO Outage 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap) forced outage due to fire 244.57 Days
Continuous		  
17-May-23 17:01 30-Nov-23 17:00 EPCOR Outage 72RG7 (Garneau - Rossdale) faulted cable 197.04 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 22-Dec-23 17:00 EPCOR Outage 805s C1 (805s Jasper), EP 805s J2408 (EP 805s Jasper) Jasper: Emergency Investigation of J2408 Cap Bank Breaker 200.46 Days
Continuous		  
12-Jun-23 00:00 03-Jan-24 00:00 ATCO Outage 7L64 (747s Bassett - 930s Arcenciel) forced outage due to fire 205.04 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		  
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		  
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		  
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		  
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		  
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		  
25-Jul-23 11:01 04-Dec-23 17:00 ATCO Outage 766s 901T (766s Nevis), 766s 701 (766s Nevis) 766S Nevis Rebuild Project 132.29 Days
Continuous		  
31-Jul-23 14:56 14-Dec-23 16:00 ENMAX Outage 38B138-38.1CAP (SS-38), 38.1C (SS-38) motor run time fail 136.09 Days
Continuous		  
09-Aug-23 08:00 03-Nov-23 17:00 ALTALINK TE 385s RTU/SCADA (385s Spring Coulee) updating RTU configuration for station refurbishment 86.38 Days
Daily		  
12-Aug-23 18:00 27-Oct-23 10:00 ALTALINK Outage 29s T2 (29s Cascade) cutover and energize new 177s switchgear 75.67 Days
Continuous		  
21-Aug-23 17:01 04-Dec-23 17:00 ATCO IO 766s 144kV Bus (766s Nevis) connect new 704A to the 144 kV bus, work still required to install new 903T and 704 to connect to 704A 105.04 Days
Continuous		  
22-Aug-23 09:30 29-Nov-23 17:30 ATCO TE 848s RTU/SCADA (848s Ruth Lake), 848s Protection & Control (848s Ruth Lake) Suncor capacity increase project -
RTU upgrades		 99.38 Days
Continuous		  
30-Aug-23 08:00 26-Oct-23 16:00 ENMAX Outage 1.84L (SS-1 - SS-5), 5B138-1.84 (SS-5) green line 1.84L civil and electrical tie-in 57.33 Days
Continuous		  
01-Sep-23 20:00 31-Oct-23 17:00 ATCO Outage 7L113 (853s Ring Creek - 930s Arcenciel) forced outage 59.88 Days
Continuous		  
02-Sep-23 08:00 03-Nov-23 16:00 ENMAX Outage 13.1TR (SS-13) tapchanger replacement, HV bushing replacement, power factor test transformer, oil sampling 62.33 Days
Continuous		  
03-Sep-23 18:00 26-Oct-23 16:00 ENMAX Outage 1.82L (SS-1 - SS-5) green Line 1.84L civil and electrical tie -in 52.92 Days
Continuous		  
05-Sep-23 09:00 16-Oct-23 10:00 ATCO Outage 795s 702T (795s Zama) remove and replace bkr 506, leak repairs on 702T & 502VR as well as maintenance 41.04 Days
Continuous		  
06-Sep-23 07:00 18-Oct-23 17:00 ALTALINK, EPCOR Outage 921L (71s Lamoureux - 987s Clover Bar), 987s CDS31 (987s Clover Bar), 987s T2 (987s Clover Bar), 987s C2404 (987s Clover Bar), 987s C2405 (987s Clover Bar), 987s C2406 (987s Clover Bar), 987s C2408 (987s Clover Bar), 987s CC721 (987s Clover Bar), 987s T4 (987s Clover Bar) initial stage of 240 kV ring re-configuration for new 1191L construction 42.42 Days
Continuous		  
06-Sep-23 07:00 18-Oct-23 17:00 ALTALINK, EPCOR Outage 71s 921X (71s Lamoureux), 921L (71s Lamoureux - 987s Clover Bar) initial stage of 240 kV ring re-configuration for new 1191L construction. 42.42 Days
Continuous		  
08-Sep-23 09:30 29-Nov-23 17:30 ATCO, SUNCOR Outage 29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake), 848s 903 (848s Ruth Lake), 848s 906 (848s Ruth Lake) reconductor 29PL9-1 (Suncor Capacity Increase project) 82.38 Days
Continuous		  
08-Sep-23 09:30 20-Oct-23 18:00 ATCO, SUNCOR Outage 29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake), 848s 901 (848s Ruth Lake), 848s 902 (848s Ruth Lake) reconductor 29PL9-1 (Suncor Capacity Increase project) 42.35 Days
Continuous		  
11-Sep-23 07:00 17-Nov-23 17:00 EPCOR TE Protection & Control (Namao) protection blocking for breaker fail and SA upgrade cutovers and commissioning 67.46 Days
Continuous		  
11-Sep-23 08:00 19-Oct-23 18:00 SUNCOR TE 29EDD-1 RTU/SCADA (29EDD-1 Millennium) SCADA modification, testing and generating numerous false alarms 38.42 Days
Continuous		  
12-Sep-23 09:00 12-Oct-23 08:30 ALTALINK Outage 358s T1 (358s Amoco Brazeau) breaker install, PT replacement, T1 and switch maintenance 29.98 Days
Continuous		  
13-Sep-23 07:00 10-Nov-23 17:00 EPCOR TE N721 (Namao), N722 (Namao), N723 (Namao), N724 (Namao), N725 (Namao), N726 (Namao) Namao: breaker fail relays out-of-service 58.46 Days
Continuous		  
18-Sep-23 08:00 13-Oct-23 17:00 ATCO Outage 7L08 (830s Carmon - 834s Wesley Creek), 830s 701T (830s Carmon), 830s 701TCS (830s Carmon) transformer 701T protection upgrade. 25.38 Days
Continuous		  
18-Sep-23 09:00 17-Nov-23 17:00 ATCO TE 739s RTU/SCADA (739s Edith Lake) SCADA upgrades 60.38 Days
Continuous		  
19-Sep-23 07:00 21-Oct-23 07:00 EPCOR Outage 330P 12TC2 (330p Genesee), 330p 809 (330p Genesee) screw piles installation on west end of existing 500kv bus 2 32 Days
Continuous		  
20-Sep-23 10:00 04-Dec-23 17:00 ATCO Outage 766S 240KV Bus, 766s 901T (766s Nevis), 766s 701 (766s Nevis), 766s 901 (766s Nevis), 766s 902 (766s Nevis) replace and commission equipment as part of Nevis rebuild project 75.33 Days
Continuous		  
23-Sep-23 17:00 02-Nov-23 11:00 ALTALINK Outage 659s T1 (659s Pegasus Lake), 659s 289 (659s Pegasus Lake) switch replacements, protections 39.75 Days
Continuous		  
25-Sep-23 07:00 29-Feb-24 17:00 EPCOR TE 330p RTU/SCADA (330p Genesee) Genesee re-powering project work 157.46 Days
Continuous		  
25-Sep-23 09:00 27-Oct-23 17:00 BCH Outage T4 (BCH Natal), 2CB2 (BCH Natal) replace NTL 2CT2 BC maintenance does not affect the Alberta ATC 32.33 Days
Continuous		 AB-BC
29-Sep-23 20:00 13-Oct-23 18:00 SUNCOR Outage 29PL6-5 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29PT-0084 (29EDD-22), 29PS-44 (29EDD-22) iIsolation and PM and corrective on 29PP-17 Bus 13.92 Days
Continuous		  
30-Sep-23 08:00 19-Oct-23 18:00 ATCO, SUNCOR Outage 29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake), 29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake) reconductoring for 29PL9-2
29PL9-2 B protection retrofit and associated pre-commissioning / commissioning		 19.42 Days
Continuous		  
01-Oct-23 15:01 29-Oct-23 09:00 ALTALINK Outage 385s 69kV Bus (385s Spring Coulee), 385s T1 (385s Spring Coulee), 385s T2 (385s Spring Coulee), 385s T3 (385s Spring Coulee), 385s 225 (385s Spring Coulee), 385s 67 (385s Spring Coulee) station refurbishment 27.75 Days
Continuous		  
02-Oct-23 08:00 12-Oct-23 15:00 SUNCOR Outage 29EDD-85 29PS-320 (29EDD-85) STR 1-24 lightning damage (MIDLITE) 10.29 Days
Continuous		  
02-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE 358s RTU/SCADA (358s Amoco Brazeau) update and test config for SCADA equipment replacement 10.38 Days
Daily		  
02-Oct-23 08:00 31-Oct-23 17:00 ATCO TE 766s Protection & Control (766s Nevis), APS# 139 901T-766S Nevis Overload Mitigation Scheme work on RAS Hub at Nevis 29.38 Days
Continuous		  
02-Oct-23 09:00 20-Oct-23 17:00 ATCO TE 830s RTU/SCADA (830s Carmon) SCADA upgrades, new station controller, replacing PLC, mobile sub in place 18.33 Days
Continuous		  
02-Oct-23 10:00 23-Oct-23 16:00 ATCO Outage 739s 701T (739s Edith Lake), 6L11 (739s Edith Lake - 854s Swan Dive), 6L97 (735s Swan River - 739s Edith Lake), 739s 601 (739s Edith Lake), 739s 602 (739s Edith Lake), 739s 603 (739s Edith Lake), 735s 603 (735s Swan River) protection and control upgrades 21.25 Days
Continuous		  
02-Oct-23 11:00 23-Oct-23 17:00 ATCO TE 739s Protection & Control (739s Edith Lake) wiring changes in 700PT1Y1 for 739S 701T overcurrent relay 21.25 Days
Continuous		  
02-Oct-23 18:01 30-Oct-23 18:00 ENMAX Outage 11.82L (SS-11 - SS-14), 11B138-11.82 (SS-11), 14B138-11.82 (SS-14) forced outage: inoperable until replaced 28 Days
Continuous		  
05-Oct-23 11:30 13-Oct-23 18:00 ATCO Outage 6L12 (774s Monitor - 6L25 tap), 774s 601 (774s Monitor), 774s 701T (774s Monitor), 774s 707 (774s Monitor) forced out 8.27 Days
Continuous		  
06-Oct-23 08:00 15-Oct-23 18:00 SUNCOR Outage 29EDD-1 T1 (29EDD-1 Millennium), 29EDD-1 72kV South Bus (29EDD-1 Millennium), 29EDD-1 260kV South Bus 1 (29EDD-1 Millennium), 29EDD-1 260kV South Bus 2 (29EDD-1 Millennium), 29EDD-1 29EDD1S1452 (29EDD-1 Millennium), 29EDD-1 29EDD1s1852 (29EDD-1 Millennium), 29EDD-1 29EDD1s352 (29EDD-1 Millennium), 29EDD-1 29EDD1s652 (29EDD-1 Millennium), 29EDD-1 952-103 (29EDD-1 Millennium), 29EDD-1 952-106 (29EDD-1 Millennium), 29EDD-1 29EDD1s952 (29EDD-1 Millennium) perform 260kV bus jumper replacement and bus differential CT ratio change 9.42 Days
Continuous		  
08-Oct-23 07:00 21-Oct-23 17:00 ALTALINK TE 244s Protection & Control (244s Bowmanton) firmware and reconfiguration of protections for new 264s substation A&B 983L protection, associated TPR's and 164 RAS 13.42 Days
Continuous		  
08-Oct-23 07:00 21-Oct-23 17:00 ALTALINK TE 251s Protection & Control (251s Whitla) firmware and reconfiguration of protections for new 264s substation A&B 983L protection, associated TPR's and 164 RAS 13.42 Days
Continuous		  
08-Oct-23 07:00 21-Oct-23 17:00 ALTALINK TE 244s RTU/SCADA (244s Bowmanton) update SCADA configuration for new RAS164 relays and 1074L changes 13.42 Days
Continuous		  
08-Oct-23 07:00 21-Oct-23 17:00 ALTALINK TE 251s RTU/SCADA (251s Whitla) update SCADA configuration for new RAS164 relays and 1074L changes 13.42 Days
Continuous		  
09-Oct-23 07:00 08-Dec-23 16:00 ALTALINK TE 368s Protection & Control (368s Burdett) upgrade the A87/138B relay 60.42 Days
Continuous		  
09-Oct-23 07:00 25-Oct-23 18:00 ALTALINK TE 65s RTU/SCADA (65s High River) configuration updates for the Saddlebrook project 16.46 Days
Daily		  
09-Oct-23 07:00 25-Oct-23 18:00 ALTALINK TE 678s RTU/SCADA (678s Okotoks) configuration updates for the Saddlebrook project 16.46 Days
Daily		  
09-Oct-23 07:00 13-Oct-23 17:00 ALTALINK, EPCOR Outage 909L (310p Sundance - 665s Dome), 665s D2402 (665s Dome), 665s D2403 (665s Dome), 665s T2 (665s Dome), 665s DAB2 (665s Dome), 665s DDS14 (665s Dome) Dome: TX2 Zone, P&C- DFR Upgrade and Apparatus- D2403 Breaker Maintenance 4.42 Days
Continuous		  
09-Oct-23 07:13 10-Nov-23 17:00 ALTALINK Outage 71s 152 (71s Lamoureux) forced outage 32.45 Days
Continuous		  
09-Oct-23 08:00 14-Oct-23 20:00 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap), 7L50 (757s Battle River - 491L tap), 491L (252s Jarrow - 7L50 tap) ATCO 7L50 pole and arm replacement - live line work 5.5 Days
Daily		  
09-Oct-23 08:00 14-Oct-23 20:00 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap), 7L50 (757s Battle River - 491L tap) 7L50 pole and arm replacement - live line work 5.5 Days
Daily		  
09-Oct-23 08:00 17-Oct-23 17:00 ALTALINK TE 158s RTU/SCADA (158s Vauxhall) RTU configuration updates for new line protections installation 8.38 Days
Continuous		  
09-Oct-23 08:00 17-Oct-23 17:00 ALTALINK TE 447s RTU/SCADA (447s Enchant) RTU configuration updates for new line protections installation 8.38 Days
Continuous		  
09-Oct-23 08:00 13-Oct-23 16:00 ENMAX Outage 16.63L (SS-16 - SS-36), 36.5TR (SS-36), 36B69-16.63/36.5TR (SS-36), 16B69-16.63 (SS-16) 36PT69-1 replacement 4.33 Days
Continuous		  
10-Oct-23 07:00 14-Oct-23 18:00 ALTALINK Outage 1034L (244s Bowmanton - 324s Cassils) comp. replacement (Str. 186-380) 4.46 Days
Continuous		  
10-Oct-23 07:00 19-Oct-23 11:00 ALTALINK RB 185L (379s Shell Canada Waterton - 415s Drywood) component replacements between structures #140 - 215 9.17 Days
Continuous		  
10-Oct-23 07:00 14-Oct-23 17:00 EPCOR Outage 557s CD2405 (557s Castle Downs) breaker maintenance 4.42 Days
Continuous		  
10-Oct-23 07:00 13-Oct-23 17:00 EPCOR Outage N724 (Namao), 72CN10 (987s Clover Bar - Namao) breaker fail cutovers 3.42 Days
Continuous		  
10-Oct-23 07:30 14-Oct-23 17:30 ATCO, ALTALINK RB 1035L (244s Bowmanton - 2075s Newell) crews working on adjacent 1034L 4.42 Days
Daily		  
10-Oct-23 07:30 14-Oct-23 17:30 ATCO RB 9L1035 (244s Bowmanton - 2075s Newell) AltaLink request - maintenance on 1034L, requires daily RB advices on 1035L at A2075s 4.42 Days
Continuous		  
10-Oct-23 07:30 21-Oct-23 17:30 ALTALINK RB 964AL (1024s Granlea - 964L tap), 964L (244s Bowmanton - 964L tap), 964L (251s Whitla - 964L tap) Crews working within close proximity on 983L tying in the new 264s Elkwater Sub. 11.42 Days
Continuous		  
10-Oct-23 08:00 12-Oct-23 16:00 ATCO RB 7L27 (ATC 793s West Peace River - 834s Wesley Creek) walk up and climbing inspection 2.33 Days
Continuous		  
10-Oct-23 08:00 19-Oct-23 16:00 ATCO, ALTALINK RB 1241L (510s Sunnybrook - 939s Livock) ATCO aerial patrol 9.33 Days
Daily		  
10-Oct-23 08:00 20-Oct-23 17:00 ALTALINK TE 659s RTU/SCADA (659s Pegasus Lake) configure new alarms for T1 and T1 protection replacement 10.38 Days
Daily		  
10-Oct-23 08:00 13-Oct-23 16:00 ENMAX Outage 8.6TR (SS-8) relay, protection test and settings changes 3.33 Days
Continuous		  
10-Oct-23 08:00 13-Oct-23 17:00 BCH RB 2L294 (BCH A. A. Lambert - BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Nelway) hazard tree removals 2-01 to 38-04 3.38 Days
Continuous		 AB-BC
10-Oct-23 09:00 20-Oct-23 17:00 ALTALINK Outage 189L (373s Madden - 418L tap), 373s T1 (373s Madden), 373s 752 (373s Madden), 373s 25 (373s Madden) component replacements 189L 10.33 Days
Continuous		  
10-Oct-23 09:00 27-Oct-23 17:00 ATCO TE 802s Protection & Control (802s Michichi Creek) relay settings updates and commissioning 17.33 Days
Continuous		  
10-Oct-23 10:00 13-Oct-23 17:30 ATCO Outage 951s SVC (951s Thickwood) crane annual recertifications 3.31 Days
Continuous		  
10-Oct-23 10:00 17-Oct-23 17:00 ATCO Outage 786s 702T (786s High Level) install secondary oil containment around 702T. 7.29 Days
Continuous		  
10-Oct-23 11:00 13-Oct-23 17:30 ATCO TE 898s Protection & Control (898s Heart Lake) port disable and firmware upgrade 3.27 Days
Continuous		  
10-Oct-23 12:00 13-Oct-23 16:00 ATCO Outage 9L15 (834s Wesley Creek - 876s Brintnell), 876s 904 (876s Brintnell), 876s 906 (876s Brintnell), 834s 909D1 (834s Wesley Creek) 21B/ 9L15 RTXP test switch replacement 3.17 Days
Continuous		  
10-Oct-23 12:00 13-Oct-23 16:00 ATCO TE 876s Protection & Control (876s Brintnell) 21B/ 9L15 RTXP Test Switch Replacement, PRC-005 Relay Testing 21A&B / 9L15 an 50BF/ Bkr 904&906, PRC-005 Trip Coil Testing Breaker 904 & 906 3.17 Days
Continuous		  
10-Oct-23 12:00 12-Oct-23 15:05 ALTALINK Outage 808L (171s Redwater - 808AL tap), 171s 808E (171s Redwater) maintenance (str. 76-152) 2.13 Days
Continuous		  
10-Oct-23 12:00 12-Oct-23 17:30 ALTALINK Outage 419s T1 (419s Chestermere) fix leaks, major maintenance on t/c, doble, monitor fail alarm 2.23 Days
Continuous		  
10-Oct-23 13:01 21-Oct-23 08:00 ALTALINK Outage 983L (251s Whitla - 983L tap) close 983L open points "A&B" @ 264s to tie in new substation. 10.79 Days
Continuous		  
10-Oct-23 23:00 25-Nov-23 17:00 ALTALINK Outage 62s 12 (62s Brazeau Plant) maintenance 45.79 Days
Continuous		  
11-Oct-23 07:00 12-Oct-23 17:00 ALTALINK TE 264s RTU/SCADA (264s Elkwater) update SCADA configuration for new RAS164 relays and 1074L changes 1.42 Days
Continuous		  
11-Oct-23 08:00 13-Oct-23 18:00 ATCO TE ATCO Telecom Equipment, 903s RTU/SCADA (903s Loyalist) cutting out microwave link to new fiber optic carrier link 2.42 Days
Continuous		  
11-Oct-23 08:00 15-Oct-23 15:30 ATCO TE 795s Protection & Control (795s Zama) block 87TB/701T protection for logic testing 4.31 Days
Continuous		  
11-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE 535s Protection & Control (535s Joffre) perform PRC maintenance 1.38 Days
Daily		  
11-Oct-23 08:30 12-Oct-23 17:30 ALTALINK Outage 868s T1 (868s Keephills Make-Up) test, DGA, IR scan and investigate level gauge on 868s T1 1.38 Days
Continuous		  
11-Oct-23 09:00 13-Oct-23 18:00 ALTALINK Outage 89s T2 (89s Ellerslie) bushing monitor replacement 2.38 Days
Continuous		  
12-Oct-23 03:00 12-Oct-23 07:00 ALTALINK Outage 62s 11 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
12-Oct-23 06:00 13-Oct-23 18:00 ALTALINK Outage 337s 138kV Bus (337s Canada Liquidair), 337s T1 (337s Canada Liquidair), 337s T2 (337s Canada Liquidair), 337s 746BW (337s Canadian Liquid Air) replace LA’s on T1, repair leak on 337s746BW, T1 NGR maintenance, 1.5 Days
Continuous		  
12-Oct-23 07:00 16-Oct-23 18:00 ATCO, ALTALINK Outage 1036L (356s Milo - 554s Travers) installing new 1036L structure 1 4.46 Days
Continuous		  
12-Oct-23 07:00 12-Oct-23 18:00 ALTALINK Outage 749L (648s Metiskow - 749AL tap) urgent outage to replace failing crossarms and insulators at 749L structure 48 11 Hours
Daily		  
12-Oct-23 07:30 12-Oct-23 17:30 ALTALINK Outage 358s Amoco Brazeau, 358s 138kV Bus (358s Amoco Brazeau), 844L (358s Amoco Brazeau - 477s Amoco West Pembina), 358s T1 (358s Amoco Brazeau), 358s C1 (358s Amoco Brazeau), 477s 844X (477s Amoco West Pembina), 358s 844W (358s Amoco Brazeau) 472s mobile and MR1 to take load at 358s, repair 358s844w hot spot & salvage 358s1, RSLD 3 to be implemented at the end of the outage 10 Hours
Daily		  
12-Oct-23 07:30 16-Oct-23 17:30 ALTALINK RB 1005L (120s Picture Butte - 1005AL tap), 1005L (356s Milo - 1005AL tap) close proximity on 1036L 4.42 Days
Daily		  
12-Oct-23 08:00 12-Oct-23 17:00 ALTALINK IO 42s C2 (42s Sarcee), 42s C3 (42s Sarcee) load readings from in service cap banks is required as per PRC maintenance being performed on C2 and C3 protections 9 Hours
Daily		  
12-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE 252s RTU/SCADA (252s Jarrow), 252s Protection & Control (252s Jarrow) upgrade 252s MPLS node 9 Hours
Daily		  
12-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment radio repairs 9 Hours
Daily		  
12-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE 370s Protection & Control (370s North Lethbridge) relay maintenance 9 Hours
Daily		  
12-Oct-23 08:00 12-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 477s RTU/SCADA (477s Amoco West Pembina), 445s RTU/SCADA (445s Elk River), 358s RTU/SCADA (358s Amoco Brazeau), 489s RTU/SCADA (489s Petro Canada Brazeau River) upgrade MPLS node 9 Hours
Daily		  
12-Oct-23 09:00 12-Oct-23 16:00 ATCO TE ATCO Telecom Equipment replace Livock net 1 SAR chassis 7 Hours
Continuous		  
12-Oct-23 09:00 13-Oct-23 17:00 ATCO RB 7L63 (780s Lubicon - 812s Norcen), 7L63 (788s Hotchkiss - 7LA63 tap), 7L63 (812s Norcen - 7LA63 tap) high load move - lift bottom phase of Wishbone at location 7L63-922 1.33 Days
Continuous		  
12-Oct-23 10:00 12-Oct-23 12:00 ALTALINK Outage 251s 252 (251s Whitla) test RAS164 trip to breaker 2 Hours
Daily		  
12-Oct-23 12:00 13-Oct-23 17:00 ATCO RB 7L23 (796s Nipisi - 7L23 tap), 7L23 (858s Narrows Creek - 7L23 tap), 7L23 (732s Mitsue - 7L23 tap) high load move - lift bottom phase at location 5L23-212 29 Hours
Continuous		  
12-Oct-23 13:00 12-Oct-23 15:00 ALTALINK Outage 251s 352 (251s Whitla) test RAS164 trip to breaker 2 Hours
Daily		  
13-Oct-23 07:00 13-Oct-23 17:00 ALTALINK Outage 251s 552 (251s Whitla), 251s 652 (251s Whitla) test RAS164 trip to breaker 10 Hours
Daily		  
13-Oct-23 07:00 16-Oct-23 18:00 ALTALINK Outage 56L (20s Ghost - 245s Seebe) urgent completion of P5 notification, structure tracking and burning and replace structure 56L5. 3.46 Days
Continuous		  
13-Oct-23 07:00 18-Oct-23 17:00 ALTALINK TE 199s RTU/SCADA (199s East Airdrie) update SCADA configuration for new 1055s Sollaire 5.42 Days
Daily		  
13-Oct-23 07:15 13-Oct-23 17:45 ALTALINK Outage 702L (137s Sedgewick - 377s AML Hardisty) Urgent repair; Replace crossarm and insulators at structure 388, 389 10.5 Hours
Daily		  
13-Oct-23 08:00 13-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 367s RTU/SCADA (367s Harry Smith), 367s Protection & Control (367s Harry Smith) upgrade MPLS node 9 Hours
Daily		  
13-Oct-23 09:00 13-Oct-23 17:00 ATCO RB 7L08 (830s Carmon - 834s Wesley Creek) disconnect 902S mobile substation from 7L08 8 Hours
Continuous		  
14-Oct-23 08:00 22-Oct-23 17:00 ATCO, CONS Outage 7L101 (790s Poplar Hill - 944s Lowe Lake), 790s 705 (790s Poplar Hill), 944s 7L101 (944s Lowe Lake) customer maintenance 8.38 Days
Continuous		  
14-Oct-23 08:00 15-Oct-23 16:00 ENMAX Outage 37.81L (SS-37 - SS-38), 37B138-37.81 (SS-37), 38B138-37.81 (SS-38) HV breaker maintenance and testing 1.33 Days
Continuous		  
14-Oct-23 08:00 14-Oct-23 17:00 SUNCOR TE 635EDD-1000 635PT-1000 (635EDD-1000) FH-635PT-1000 winding temperature trip output isolation 9 Hours
Continuous		  
15-Oct-23 07:00 19-Oct-23 18:00 ATCO, ALTALINK Outage 1035L (244s Bowmanton - 2075s Newell) component replacement (Str. 100 - 242) 4.46 Days
Continuous		  
15-Oct-23 07:00 19-Oct-23 18:00 ATCO IO 9L1035 (244s Bowmanton - 2075s Newell) isolation for AltaLink work 4.46 Days
Continuous		  
15-Oct-23 07:00 15-Oct-23 18:00 ALTALINK Outage 801L (294s Brazeau Outlet Works - 801AL tap) urgent - replace damaged crossarms and insulators on structures 229 & 284 11 Hours
Daily		  
15-Oct-23 07:30 19-Oct-23 17:30 ALTALINK RB 1034L (244s Bowmanton - 324s Cassils) crews working on adjacent 1035L 4.42 Days
Daily		  
15-Oct-23 13:00 15-Oct-23 17:30 ALTALINK RB 199L (347s AML Fox Creek - 741s ATC Fox Creek) ATCO mobile remove on 7L199 4.5 Hours
Daily		  
16-Oct-23 07:00 20-Oct-23 17:00 EPCOR Outage N725 (Namao), 72VN21 (EP 511s Victoria - Namao) breaker fail upgrade cutovers 4.42 Days
Continuous		  
16-Oct-23 07:00 20-Oct-23 17:00 EPCOR Outage 557s CD2401 (557s Castle Downs) breaker maintenance 4.42 Days
Continuous		  
16-Oct-23 07:00 25-Oct-23 16:00 ALTALINK Outage 727L (65s High River - 727AL tap), 727L (678s Okotoks - 727AL tap), 727AL (142s Magcan - 727L tap), 65s 727N (65s High River), 678s 727 (678s Okotoks), 142s 138kV Bus (142s Magcan), 142s C1 (142s Magcan) Replace existing line protections and installations of breaker protection and control 9.38 Days
Continuous		  
16-Oct-23 07:00 25-Oct-23 18:00 ALTALINK TE 419s Protection & Control (419s Chestermere) RAS194 'A' & 'B' 9.46 Days
Daily		  
16-Oct-23 07:00 25-Oct-23 18:00 ALTALINK TE 419s RTU/SCADA (419s Chestermere) configuration updates for new RAS194 relays 9.46 Days
Daily		  
16-Oct-23 07:00 25-Oct-23 18:00 ALTALINK TE 142s RTU/SCADA (142s Magcan) configuration updates required for the saddlebrook project 9.46 Days
Daily		  
16-Oct-23 07:00 27-Oct-23 17:00 ALTALINK TE 275s Protection & Control (275s Jenner) protection outages required 11.42 Days
Continuous		  
16-Oct-23 07:00 27-Oct-23 17:00 ALTALINK TE 275s RTU/SCADA (275s Jenner) supervisory outages required for protection upgrades functional testing. 11.42 Days
Continuous		  
16-Oct-23 07:00 27-Oct-23 17:00 EPCOR Outage T2 (Rossdale), R721 (Rossdale), R723 (Rossdale), RAB2 (Rossdale) Rossdale: TX2 LCR TX Demo 11.42 Days
Continuous		  
16-Oct-23 07:15 16-Oct-23 17:45 ALTALINK Outage 710L (56s Boyle - 159s Colinton) Urgent repair; Replace crossarm and insulators at structure 86 10.5 Hours
Daily		  
16-Oct-23 07:30 20-Oct-23 15:30 ALTALINK Outage 510s ACF21 (510s Sunnybrook), 510s ACF22 (510s Sunnybrook), 510s 1952 (510s Sunnybrook), 510s 2052 (510s Sunnybrook) Urgent outage to replace ACF21 C12 capacitor and investigate ACF22 C1 for possible capacitor replacement. 4.33 Days
Continuous		  
16-Oct-23 08:00 21-Oct-23 20:00 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap), 7L50 (757s Battle River - 491L tap) 7L50 Pole and arm replacement using live line techniques. 5.5 Days
Continuous		  
16-Oct-23 08:00 18-Oct-23 17:00 ATCO Outage 7LA128 (572s Highland - 7L128 tap) customer maintenance 2.38 Days
Continuous		  
16-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE 234s RTU/SCADA (234s Fort Assiniboine) subLAN upgrade 3.38 Days
Daily		  
16-Oct-23 08:00 19-Oct-23 16:00 ATCO RB 6L16 (724s Hines Creek - 861s Eureka River) walk up and climbing inspection 3.33 Days
Continuous		  
16-Oct-23 08:00 22-Oct-23 16:00 ENMAX Outage 38.83L (SS-38 - SS-39), 38B138-38.83 (SS-38), 39B138-38.83 (SS-39) HPL breaker refurbishments 6.33 Days
Continuous		  
16-Oct-23 08:00 22-Oct-23 08:00 ENMAX Outage 16.61L (SS-16 - SS-27), 16B69-16.61 (SS-16), 27B69-16.61 (SS-27) line rebuild 6 Days
Continuous		  
16-Oct-23 08:00 26-Oct-23 18:00 Syncrude Outage 6245 (Syncrude Mildred Lake), 6335 (Syncrude Mildred Lake), 635 (Syncrude Mildred Lake), Mildred T6 (Syncrude Mildred Lake) plant 31 substation bus 6 13.8kV 6-year bus PM 10.42 Days
Continuous		  
16-Oct-23 08:00 22-Oct-23 16:00 ENMAX Outage 38.1TR (SS-38) HPL breaker refurbishments on 38B138-38.83 6.33 Days
Continuous		  
16-Oct-23 08:00 16-Oct-23 16:00 ATCO RB 7L76 (786s High Level - 832s Blumenort) high load move 8 Hours
Continuous		  
16-Oct-23 08:00 16-Oct-23 16:00 ATCO RB 7L93 (828s Sulphur Point - 930s Arcenciel) high load move 8 Hours
Continuous		  
16-Oct-23 08:30 25-Oct-23 14:59 ALTALINK Outage 310p 2752 (310p Sundance) breaker replacement 310p DWG 4 of 4 RSLD 1 to be implemented at the end of the outage 9.27 Days
Continuous		  
16-Oct-23 09:00 19-Oct-23 16:30 ALTALINK, ATCO Outage 491L (252s Jarrow - 7L50 tap), 7L50 (526s Buffalo Creek - 491L tap), 7L50 (757s Battle River - 491L tap), 757s 709 (757s Battle River) pole and arm replacement 3.31 Days
Continuous		  
16-Oct-23 09:00 28-Nov-23 17:00 ALTALINK TE 368s RTU/SCADA (368s Burdett), AltaLink Distribution Switch supervisory visibility outages may be required to download new configurations 43.38 Days
Continuous		  
16-Oct-23 09:00 27-Oct-23 17:00 BCH Outage 2L112 (BPA Boundary - BCH Nelway) T2 inspection, doble and tap changer inspection 11.33 Days
Continuous		 AB-BC
16-Oct-23 09:00 20-Oct-23 17:00 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap), 491L (252s Jarrow - 7L50 tap) ATCO 7L50 Pole and arm replacement using live line techniques 4.33 Days
Daily		  
16-Oct-23 09:00 20-Oct-23 17:00 ATCO TE 862s RTU/SCADA (862s South Bezanson) download program changes to the RTU 4.33 Days
Continuous		  
16-Oct-23 09:00 24-Oct-23 17:00 ALTALINK TE 395s RTU/SCADA (395s North Holden) update config for 395s44W equipment replacement 8.33 Days
Daily		  
16-Oct-23 10:00 24-Oct-23 17:00 ATCO Outage 9L16, 9L16 (755s Cordel - 972s Tinchebray) Upgrade 21A/B-9L16 protection relay wiring/programming and commission LTO/DTT 8.29 Days
Continuous		  
16-Oct-23 10:00 23-Oct-23 17:00 ATCO TE 972s Protection & Control (972s Tinchebray), 972s RTU/SCADA (972s Tinchebray) relay settings updates at 972s 7.29 Days
Continuous		  
16-Oct-23 10:00 23-Oct-23 17:00 ATCO TE 755s Protection & Control (755s Cordel), 755s RTU/SCADA (755s Cordel) 9L16 21A and 21B relay settings updates at 755S 7.29 Days
Continuous		  
16-Oct-23 10:00 23-Oct-23 12:00 ATCO Outage 7L40 (733s Simonette - 813s Little Smoky) Pole Replacement ( Mitigation ) 7.08 Days
Continuous		  
16-Oct-23 10:00 16-Oct-23 11:00 ATCO TE ATCO Telecom Equipment wesley creek sar net 11 os upgrade
 60 Mins
Continuous		  
16-Oct-23 10:00 16-Oct-23 17:00 ALTALINK TE 149s Protection & Control (149s Nisku) standard relay maintenance 7 Hours
Daily		  
16-Oct-23 11:00 19-Oct-23 18:00 ALTALINK Outage 89s T1 (89s Ellerslie) bushing monitor replacement on all 3 phases and replace DGA monitor replacing PD monitor on T1-2 phase only 3.29 Days
Continuous		  
16-Oct-23 11:00 26-Oct-23 18:00 ALTALINK Outage 523s T1 (523s Bullshead) replace 25kV PTs (SS1 & s14) and install bird cover-ups, salvage 25kV switch (523s3) 10.29 Days
Continuous		  
16-Oct-23 11:00 17-Oct-23 17:00 ALTALINK TE 391s Protection & Control (391s Balzac) techs to upgrade all cards 30 Hours
Continuous		  
16-Oct-23 11:00 17-Oct-23 17:00 ALTALINK TE 391s RTU/SCADA (391s Balzac) RTU outage to update settings 30 Hours
Daily		  
16-Oct-23 11:00 17-Oct-23 17:00 ALTALINK TE 247s Protection & Control (247s Piper Creek) PRC maintenance 30 Hours
Daily		  
16-Oct-23 12:00 19-Oct-23 18:00 ALTALINK Outage 808L (171s Redwater - 808AL tap), 171s 808E (171s Redwater) maintenance (str. 76-152) 3.25 Days
Continuous		  
16-Oct-23 12:00 24-Oct-23 13:00 ALTALINK Outage 395s T1 (395s North Holden) replace and add equipment 8.04 Days
Continuous		  
16-Oct-23 13:00 16-Oct-23 16:00 ALTALINK Outage 368s T2 (368s Burdett) demo A87/138B trip to 368sT2 (Tx18500). B87/138B to remain intact to maintain protections 3 Hours
Daily		  
16-Oct-23 13:00 20-Oct-23 14:00 ALTALINK TE 321s RTU/SCADA (321s Al Rothbauer) salvaging D400 and commissioningg new S.M.P. HMI. 4.04 Days
Daily		  
16-Oct-23 13:30 19-Oct-23 17:30 ALTALINK Outage 1012s T1 (1012s Deer Hill) install gas monitor & pressure sensor, maintain T1, doble 3.17 Days
Continuous		  
17-Oct-23 02:00 20-Oct-23 19:00 EPCOR Outage 987s GT2 (987s Clover Bar), 987s CGB2 (987s Clover Bar) Cloverbar: G2 CPC Outage 3.71 Days
Continuous		  
17-Oct-23 08:00 25-Oct-23 18:00 SUNCOR Outage 29EDD-34 29PT-341 (29EDD-34), 29EDD-34 29-952-143 (29EDD-34), 29EDD-34 29-952-142 (29EDD-34), 29EDD-34 29-652-10301 (29EDD-34), 29EDD-34 29PS-0375 (29EDD-34) BP-29PT-341 sensing / ground resistor clean, repair and sealing, 29EDD-34 DFR completion 8.42 Days
Continuous		  
17-Oct-23 08:00 17-Oct-23 11:00 ALTALINK Outage 368s T1 (368s Burdett) demo A87/138B trip to 368sT1 3 Hours
Daily		  
17-Oct-23 08:00 17-Oct-23 15:00 ALTALINK TE AltaLink Telecom Equipment to complete MPLS upgrade and LAN switch install. 7 Hours
Daily		  
17-Oct-23 08:00 17-Oct-23 16:00 ALTALINK Outage 336s T1 (336s Fincastle), 336s 752 (336s Fincastle) 336s2 replace fuse holders and close Open Point 'A' 8 Hours
Daily		  
17-Oct-23 08:00 18-Oct-23 17:00 ALTALINK TE 170s T1 (170s Pike), 170s Protection & Control (170s Pike) replace T1 90/LTC1 M2001C tap changer controller 1.38 Days
Daily		  
17-Oct-23 08:00 18-Oct-23 17:00 ALTALINK TE 170s RTU/SCADA (170s Pike) update config for T1 90/LTC1 M2001C tap changer controller replacement 1.38 Days
Daily		  
17-Oct-23 08:00 17-Oct-23 17:00 ALTALINK TE 194s Protection & Control (194s South Red Deer) PRC maintenance 9 Hours
Daily		  
17-Oct-23 08:00 20-Oct-23 16:00 ENMAX Outage 8.3TR (SS-8) com fail. relay, protection test, tap changer, reversing switch check 3.33 Days
Continuous		  
17-Oct-23 08:00 17-Oct-23 12:00 ENMAX TE RTU/SCADA (SS-33) transfer all IP data in Ring 1 4 Hours
Continuous		  
17-Oct-23 08:00 17-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 69s Protection & Control (69s North Barrhead), 69s RTU/SCADA (69s North Barrhead) upgrade MPLS node 9 Hours
Daily		  
17-Oct-23 08:30 17-Oct-23 11:00 ALTALINK Outage 723L (69s North Barrhead - 724L tap) Create 723L Open Point 'A' (Str 723L132) to facilitate 723L133 airbreak adjustment. 2.5 Hours
Daily		  
17-Oct-23 08:30 17-Oct-23 11:00 ALTALINK RB 723L (69s North Barrhead - 724L tap), 723L (438s Westlock - 724L tap), 723L (150s Clyde - 438s Westlock) live line recloser block to create 723L open point 'A' (Str 723L132) facilitating the 723L133 air-break adjustment 2.5 Hours
Daily		  
17-Oct-23 09:00 17-Oct-23 10:00 ATCO TE ATCO Telecom Equipment upgrade Bonnyville SAR OS 60 Mins
Continuous		  
17-Oct-23 09:00 17-Oct-23 16:00 ATCO TE ATCO Telecom Equipment replace Livock net 11 SAR chassis 7 Hours
Continuous		  
17-Oct-23 09:00 17-Oct-23 17:00 ATCO TE ATCO Telecom Equipment replace SOC telecom chassis of 7705 SAR 0.11. 8 Hours
Continuous		  
17-Oct-23 09:00 18-Oct-23 17:00 ATCO IO 2075s 920 (2075s Newell), 2075s 921 (2075s Newell) top up oil on 501VR @ 2075S. 1.33 Days
Continuous		  
17-Oct-23 10:00 20-Oct-23 17:00 ATCO TE 766s Protection & Control (766s Nevis), 766s RTU/SCADA (766s Nevis) modification of RAS134 at 766S Nevis 3.29 Days
Continuous		  
17-Oct-23 10:00 17-Oct-23 17:00 ATCO TE ATCO Telecom Equipment replace Youngstown_S SAR chassis 7 Hours
Continuous		  
17-Oct-23 10:30 17-Oct-23 15:30 ALTALINK Outage 723L (69s North Barrhead - 724L tap) 723L133 airbreak adjustment 5 Hours
Daily		  
17-Oct-23 12:00 17-Oct-23 16:00 ENMAX TE RTU/SCADA (SS-43) transfer all IP data in Ring 1 4 Hours
Continuous		  
17-Oct-23 15:00 17-Oct-23 17:30 ALTALINK RB 723L (69s North Barrhead - 724L tap), 723L (438s Westlock - 724L tap), 723L (150s Clyde - 438s Westlock) Live Line recloser block to close 723L Open Point 'A' (Str 723L132) facilitating the 723L133 airbreak adjustment. Coincides with WAP1s IPP maintenance. 2.5 Hours
Daily		  
17-Oct-23 15:00 17-Oct-23 17:30 ALTALINK Outage 723L (69s North Barrhead - 724L tap) Close 723L Open Point 'A' (Str 723L132) that facilitated 723L133 airbreak adjustment. 2.5 Hours
Daily		  
17-Oct-23 17:00 19-Oct-23 07:00 ALTALINK Outage 106s T1 (106s Paddle River), 106s 744 (106s Paddle River) maintenance 1.58 Days
Continuous		  
18-Oct-23 06:00 11-Nov-23 18:00 SUNCOR IO 30EDD-2 Protection & Control (30EDD-2) PM 5y
 24.54 Days
Continuous		  
18-Oct-23 07:00 01-Feb-24 17:00 EPCOR Outage 987s CDS33 (987s Cloverbar) continued re-configuration of 240 kV ring for new 1191L bay construction will leave the ring open from newly energized CDS41 and CDS44 disconnects. 106.46 Days
Continuous		  
18-Oct-23 07:00 25-Oct-23 18:00 ALTALINK, TRANSCANADA TE 303s RTU/SCADA (303s Saddlebrook) Configuration updates required for the Saddlebrook Project. Temp. loss of visibility for approx. 10 min. during updates 7.46 Days
Daily		  
18-Oct-23 07:00 29-Mar-24 17:00 ATCO TE 885s Protection & Control (885s McMillan) 885S Protection upgrade. 900BS1&2 protection will be blocked throughout project. Bus protection will be covered by remote ends during the project. 163.42 Days
Continuous		  
18-Oct-23 07:15 18-Oct-23 17:45 ALTALINK Outage 788L (898s Heart Lake - 788AL tap) urgent repair; replace crossarms and insulators at structure 281 10.5 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 15:00 ALTALINK Outage 368s C1 (368s Burdett), 368s C2 (368s Burdett) demo A87/138B trip to 368s C1 & C2. B87/138B to remain intact to maintain protections 7 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 15:00 ALTALINK Outage 719L (378s Shell Caroline - 575s Sundre) complete 575s MPLS upgrade and LAN switch install 7 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 15:00 ALTALINK TE 575s Protection & Control (575s Sundre) to complete MPLS upgrade and LAN switch install. Affects 719L channel A & B for 2hrs, RAS 1201L. 719L must be opened. 7 Hours
Daily		  
18-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE 186s Protection & Control (186s Dry Creek) Techs to upgrade all cards in T2 B87/50/51/51NN/T2 URT60 relay. Redundant protection will remain in service throughout 1.38 Days
Continuous		  
18-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE 186s RTU/SCADA (186s Dry Creek) RTU outage to update settings related to T2 B prot card replacement. A few 10 minutes visibility/supervisory outages each day during configuration changes. RTU restored overnight. 1.38 Days
Daily		  
18-Oct-23 08:00 19-Oct-23 16:00 ENMAX Outage 65B240-D134 (SS-65) relay protection test - 65RLY240-D134 (BMR25) 1.33 Days
Continuous		  
18-Oct-23 08:00 20-Oct-23 16:00 ENMAX Outage 11.81L (SS-11 - SS-13), 11B138-11.81 (SS-11), 13B138-11.81 (SS-13) surge arrestor replacement 11B138-11.81 2.33 Days
Continuous		  
18-Oct-23 08:00 18-Oct-23 17:00 ALTALINK TE 28s RTU/SCADA (28s West Brooks) SCADA outages to expand database for upcoming Fault reporting upgrade.A few RTU supervisory/visibility outages for 10 minutes at a time. Qualified switchman on site. 9 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 420s Protection & Control (420s Broadmoor), 746s RTU/SCADA (746s Sherwood Park) Repair MPLS node @ 420s. Affects 636L, 700L TPR one channel at a time with redundant protection in service at all times. Affects 746s RTU for 50 mSec as transferred to different path. 9 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 12:00 ALTALINK, TRANSALTA Outage 33s T1 (33s Spray) maintenance 4 Hours
Daily		  
18-Oct-23 08:00 18-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment 9069R - 9374R Radio repairs. All circuits re-routed with mSec outage. 9 Hours
Daily		  
18-Oct-23 10:00 18-Oct-23 17:00 ATCO TE ATCO Telecom Equipment replace Youngstown_T SAR chassis 7 Hours
Continuous		  
18-Oct-23 13:00 18-Oct-23 17:00 ALTALINK Outage 33s 4 (33s Spray) maintenance 4 Hours
Daily		  
19-Oct-23 07:30 19-Oct-23 12:00 ALTALINK TE 65s Protection & Control (65s High River) 'A' & 'S' Protections will be removed from service one at a time to tie in trip to the new 752 Breaker Fail Protection. Redundant protection to remain in service at all times. 4.5 Hours
Daily		  
19-Oct-23 08:00 19-Oct-23 12:00 ALTALINK Outage 368s 612 (368s Burdett) demo A87/138B trip to 368s612. B87/138B to remain intact to maintain protections 4 Hours
Daily		  
19-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE 356s Protection & Control (356s Milo) 356s 1005L A prot fail alarm trouble. Protection outage required. Techs to change the settings in the 87 open CT detection logic from NA to 87RCOT Redundant protection remains in service at all times. 9 Hours
Daily		  
19-Oct-23 08:00 19-Oct-23 12:00 ENMAX TE RTU/SCADA (SS-6) Transfer all IP data (SCADA, Security Camera/Access, Corp. LAN, Revenue Meter) in Ring 1 4 Hours
Continuous		  
19-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 13s Protection & Control (13s Deerland), 171s Protection & Control (171s Redwater) Upgrade MPLS node. Loss of 808L A & B TPR for 4 hours in the timeframe indicated. 9 Hours
Daily		  
19-Oct-23 08:00 19-Oct-23 17:00 ALTALINK TE 89s RTU/SCADA (89s Ellerslie) Update config for DGA monitor replacement associated with 285419 89s Tx18724, Tx18725, Tx18726 (T1) - GOI. Supervisory will be in local control. No ACC visibility for 5 min during update. Restoration time 5 min. RTU restored each day. 9 Hours
Daily		  
19-Oct-23 09:00 19-Oct-23 10:00 ATCO TE ATCO Telecom Equipment upgrade Fairview SAR OS 60 Mins
Continuous		  
19-Oct-23 09:00 20-Oct-23 15:00 ATCO IO 2075s 904 (2075s Newell), 2075s 905 (2075s Newell) Top up oil on 502VR @ 2075S.
Station Service will be changed over to Alternate if required.
Switching to Isolate 500SST2 may require opening 2075S 904 & 2075S 905, depending on what SST is in service at the time. Potentially (15 min) at the beginning of the outage and again at the end.		 30 Hours
Continuous		  
19-Oct-23 09:30 19-Oct-23 12:00 ATCO Outage 825s 907 (825s Whitefish Lake) PRC-005 - Trip Coil Testing 2.5 Hours
Continuous		  
19-Oct-23 10:00 19-Oct-23 11:00 ATCO TE ATCO Telecom Equipment upgrade Rycroft sub net 1 SAR OS 60 Mins
Continuous		  
19-Oct-23 10:00 19-Oct-23 12:00 ALTALINK Outage 251s 252 (251s Whitla) test RAS164 trip to breaker 2 Hours
Daily		  
19-Oct-23 11:00 19-Oct-23 12:00 ATCO TE ATCO Telecom Equipment upgrade Mowat sub net 1 SAR OS 60 Mins
Continuous		  
19-Oct-23 12:00 19-Oct-23 17:30 ALTALINK TE 65s Protection & Control (65s High River) 'A' & 'S' Protections will be removed from service one at a time to tie in trip to the new 752 Breaker Fail Protection. Redundant protection to remain in service at all times. 5.5 Hours
Daily		  
19-Oct-23 12:00 19-Oct-23 16:00 ENMAX TE SS-35 Transfer all IP data (SCADA, Security Camera/Access, Corp. LAN, Revenue Meter) in Ring 1 4 Hours
Continuous		  
19-Oct-23 13:00 19-Oct-23 16:00 ALTALINK Outage 368s 879 (368s Burdett) demo A87/138B trip to 368s879. B87/138B to remain intact to maintain protections 3 Hours
Daily		  
19-Oct-23 13:00 19-Oct-23 15:00 ALTALINK Outage 251s 352 (251s Whitla) test RAS164 trip to breaker 2 Hours
Daily		  
19-Oct-23 13:00 20-Oct-23 17:30 ATCO Outage 825s 905 (825s Whitefish Lake) PRC-005 - Trip Coil Testing & Tests on Nissin CTs 28.5 Hours
Continuous		  
20-Oct-23 07:00 20-Oct-23 17:00 ALTALINK Outage 251s 652 (251s Whitla), 251s 552 (251s Whitla) test RAS164 trip to breaker 10 Hours
Daily		  
20-Oct-23 07:00 20-Oct-23 17:30 ALTALINK TE 65s Protection & Control (65s High River) protection relay testing 10.5 Hours
Daily		  
20-Oct-23 07:00 20-Oct-23 18:00 ALTALINK TE 172s RTU/SCADA (172s Sherritt Gordon) update RTU configuration relating to T4 11 Hours
Daily		  
20-Oct-23 08:00 22-Oct-23 08:00 ATCO Outage 7L65 (709s Vegreville - 7LA65 tap), 709s 703 (709s Vegreville) stringing 7L65 OPGW, salvage 7L65 OHSW str 137 to str 131B
Proceed to permit 2-75368. Expand 7L65 GOI to entire line length		 2 Days
Continuous		  
20-Oct-23 08:00 26-Oct-23 18:00 ATCO, SUNCOR Outage 29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake) 29PL9-2 temporary energization 6.42 Days
Continuous		  
20-Oct-23 08:00 20-Oct-23 16:00 ENMAX Outage 39.2TR (SS-39) view the transformer secondary cabinet 8 Hours
Continuous		  
20-Oct-23 08:00 20-Oct-23 17:00 SUNCOR TE 29EDD-1 RTU/SCADA (29EDD-1 Millennium) updates to D20MX at the 29EDD-1 for Bus protection upgrade 9 Hours
Continuous		  
20-Oct-23 08:00 20-Oct-23 10:00 ENMAX IO SS-9 120/240V AC System outage. Replace the shunt trip for the solar breaker 2 Hours
Continuous		  
20-Oct-23 08:00 20-Oct-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 150s Protection & Control (150s Clyde), 150s RTU/SCADA (150s Clyde) upgrade MPLS node 9 Hours
Daily		  
20-Oct-23 09:00 20-Oct-23 15:00 ATCO RB 7L32 (811s Clairmont Lake - 862s South Bezanson), 7L32 (813s Little Smoky - 862s South Bezanson) high load move between 7L32 str 8 and str9 6 Hours
Continuous		  
20-Oct-23 13:00 20-Oct-23 15:00 ATCO Outage 7L71 (848s Ruth Lake - 2082s Dog Rib), 848s 701 (848s Ruth Lake), 848s 7L71D1 (848s Ruth Lake) PRC-005 - trip coil testing - breaker 701 at 848s 2 Hours
Continuous		  

Prepared On:   2023-10-11   15:36:11

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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