Alberta Electric System Operator
System Co-ordination Plan
2023-09-07 to 2023-09-15
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 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 29-Sep-23 17:00 EPCOR Outage 805s C1 (805s Jasper), EP 805s J2408 (EP 805s Jasper) Jasper: Emergency Investigation of J2408 Cap Bank Breaker 116.42 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		  
17-Jun-23 08:00 01-Oct-23 17:00 ATCO, ALTALINK TE ATCO RTU/SCADA, 394s RTU/SCADA (394s Empress) facility commissioning 106.38 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		  
25-Jul-23 16:00 26-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		 63.04 Days
Continuous		  
31-Jul-23 14:56 29-Sep-23 16:00 ENMAX Outage 38B138-38.1CAP (SS-38), 38.1C (SS-38) motor run time fail 60.04 Days
Continuous		  
01-Aug-23 08:30 25-Oct-23 17:00 ALTALINK Outage 377s 473C (377s AML Hardisty) replace 3 faulty capacitors 85.35 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		  
10-Aug-23 07:00 01-Oct-23 11:00 ALTALINK Outage 385s T1 (385s Spring Coulee), 385s T2 (385s Spring Coulee) replace T1, T2 52.17 Days
Continuous		  
12-Aug-23 18:00 08-Sep-23 10:00 ALTALINK Outage 29s T2 (29s Cascade) cutover and energize new 177s switchgear 26.67 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		  
28-Aug-23 07:00 26-Sep-23 18:00 ATCO, CNRL TE 859s Protection & Control (859s Primrose), 7L35 (859s Primrose - 7L35 tap) upgrade 21A/B relays as part of ATCO Electric upgrades in 822s and 970s 29.46 Days
Continuous		  
28-Aug-23 08:00 08-Sep-23 17:00 ALTALINK TE 151s RTU/SCADA (151s Strathmore) L11 feeder protection upgrade project - add and test new alarm points 11.38 Days
Continuous		  
28-Aug-23 10:00 06-Oct-23 17:00 ATCO TE 972s Protection & Control (972s Tinchebray), 972s RTU/SCADA (972s Tinchebray) relay replacement, relay settings updates, and RTU updates 39.29 Days
Continuous		  
29-Aug-23 07:00 28-Sep-23 17:00 ALTALINK, EPCOR RB 1045L (EP 805s Jasper - 1045AL tap) 1045L: LRT foundation install 30.42 Days
Continuous		  
29-Aug-23 07:00 28-Sep-23 17:00 ALTALINK, EPCOR RB 1044L (EP 805s Jasper - 816s Petrolia) 1044L - LRT foundation install 30.42 Days
Continuous		  
29-Aug-23 07:00 28-Sep-23 17:00 ALTALINK, EPCOR RB 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap), 1045AL (320p Keephills - 1045L tap) 1045L: late notice from City of Edmonton for LRT foundation install 30.42 Days
Continuous		  
29-Aug-23 08:00 07-Sep-23 17:30 ALTALINK Outage 502s T1 (502s Shell Waterton (#2)), 502s T2 (502s Shell Waterton (#2)) maintenance 9.4 Days
Continuous		  
30-Aug-23 08:00 08-Sep-23 17:00 ALTALINK TE 275s Protection & Control (275s Jenner) trip testing of breaker 9.38 Days
Continuous		  
30-Aug-23 08:00 24-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 55.33 Days
Continuous		  
01-Sep-23 06:00 09-Sep-23 18:00 ALTALINK Outage 792L (150s Clyde - 191s N.W. Cardiff), 150s 792X (150s Clyde), 191s 792N (191s N.W. Cardiff) structure and component replacement structure 203-395 8.5 Days
Continuous		  
01-Sep-23 20:00 15-Sep-23 17:00 ATCO Outage 7L113 (853s Ring Creek - 930s Arcenciel) forced outage 13.88 Days
Continuous		  
02-Sep-23 08:00 15-Oct-23 16:00 ENMAX Outage 13.1TR (SS-13) tapchanger replacement, HV bushing replacement, power factor test transformer, oil sampling 43.33 Days
Continuous		  
02-Sep-23 21:23 08-Sep-23 18:00 ALTALINK, ENEL Outage 205s T1 (205s Castle Rock Ridge), 205s 89T1 (205s Castle Rock Ridge) forced outage 5.86 Days
Continuous		  
03-Sep-23 18:00 14-Oct-23 08:00 ENMAX Outage 1.82L (SS-1 - SS-5) green Line 1.84L civil and electrical tie -in 40.58 Days
Continuous		  
04-Sep-23 07:00 08-Sep-23 18:00 ALTALINK TE 377s RTU/SCADA (377s AML Hardisty) telecom sublan site upgrade 4.46 Days
Daily		  
04-Sep-23 08:00 07-Sep-23 17:00 ALTALINK TE 12s Protection & Control (12s Heartland) P&C settings changes 3.38 Days
Daily		  
04-Sep-23 08:00 07-Sep-23 17:00 ALTALINK TE 89s Protection & Control (89s Ellerslie) P&C settings changes 3.38 Days
Daily		  
04-Sep-23 08:00 07-Sep-23 17:00 ALTALINK TE 320p Protection & Control (320P Keephills) P&C settings changes 3.38 Days
Daily		  
05-Sep-23 07:00 15-Sep-23 18:00 ALTALINK Outage 185L (379s Shell Canada Waterton - 396s Pincher Creek), 379s 185N (379s Shell Canada Waterton), 396s 185 (396s Pincher Creek) Component replacements between Structures #42 - 117 10.46 Days
Continuous		  
05-Sep-23 07:00 12-Sep-23 16:00 EPCOR IO 987s SST2 (987s Clover Bar), 987s CS2 (987s Clover Bar) P&C breaker fail op checks and Mimic panel decommissioning 7.38 Days
Continuous		  
05-Sep-23 07:00 09-Sep-23 17:00 EPCOR Outage 814s T1 (814s Bellamy), BR721 (Rossdale), VHBB1 (Rossdale), RR723 (Rossdale), RV722 (Rossdale), 72RV6 (EP 511s Victoria - Rossdale) disconnect maintenance and P&C breaker fail op checks 4.42 Days
Continuous		  
05-Sep-23 07:00 08-Sep-23 17:00 ALTALINK, EPCOR Outage 909L (89s Ellerslie - 665s Dome), 665s D2401 (665s Dome), 665s D2404 (665s Dome), 665s T3 (665s Dome), 665s DDS13 (665s Dome) P&C DFR upgrade 3.42 Days
Continuous		  
05-Sep-23 07:00 08-Sep-23 17:00 ALTALINK, EPCOR IO 909L (89s Ellerslie - 665s Dome) EPCOR D2401/D2404/909LE P&C DFR upgrade 3.42 Days
Continuous		  
05-Sep-23 07:30 08-Sep-23 17:30 ALTALINK TE 142s RTU/SCADA (142s Magcan) prepare, upload and test new configuration to RTU 3.42 Days
Daily		  
05-Sep-23 07:30 14-Sep-23 17:30 ALTALINK RB 964L (244s Bowmanton - 964L tap), 964L (251s Whitla - 964L tap), 964AL (1024s Granlea - 964L tap) working near 964L283 & 964L284 to install foundations and anchors for new structures 9.42 Days
Daily		  
05-Sep-23 07:30 14-Sep-23 17:30 ALTALINK RB 983L (244s Bowmanton - 983L tap), 983L (251s Whitla - 983L tap), 983AL (1019s Woolchester - 983L tap) working near 964L283 & 964L284 to install foundations and anchors for new structures 9.42 Days
Daily		  
05-Sep-23 08:00 08-Sep-23 17:00 ALTALINK RB 754L (118s Canmore - 437s Baymag), 754L (437s Baymag - 742L tap), 754L (245s Seebe - 742L tap), 742L (985s Exshaw - 754L tap) woodpeaker repair between 118s-437s section & 245s to Lafarge str 75s, reclamation str 61, 65, 72, 73 3.38 Days
Daily		  
05-Sep-23 08:00 26-Sep-23 18:00 SUNCOR Outage 29EDD-1 260kV North Bus 2 (29EDD-1 Millennium), 29EDD-1 29EDD1s752 (29EDD-1 Millennium), 29EDD-1 29EDD1s952 (29EDD-1 Millennium), 29EDD-1 72kV North Bus (29EDD-1 Millennium), 29EDD-1 29EDD1s1152 (29EDD-1 Millennium), 29EDD-1 29EDD1s1552 (29EDD-1 Millennium), 29EDD-1 T2 (29EDD-1 Millennium) maintenance 21.42 Days
Continuous		  
05-Sep-23 08:00 07-Sep-23 17:30 ALTALINK TE 62s RTU/SCADA (62s Brazeau Plant) perform RTU configuration update to remove unused points from configuration 2.4 Days
Daily		  
05-Sep-23 08:00 08-Sep-23 17:00 ALTALINK TE 510s RTU/SCADA (510s Sunnybrook) update alarm naming at site and finalize Fusion re-wire scope 3.38 Days
Daily		  
05-Sep-23 08:00 08-Sep-23 16:00 REDDEER Outage 194s T1 (194s South Red Deer) transformer testing 3.33 Days
Continuous		  
05-Sep-23 08:00 07-Sep-23 16:00 ENMAX Outage 15.1TR (SS-15) 15.1TR DEV 90 PT replacement, check reversing switch 2.33 Days
Continuous		  
05-Sep-23 08:00 07-Sep-23 16:00 ENMAX Outage 28.2TR (SS-28) power factor test transformer, secondary cable test, relay fault pressure test, oil sampling TC 2.33 Days
Continuous		  
05-Sep-23 08:00 08-Sep-23 16:00 ENMAX Outage 33.2TR (SS-33) tap changer overhaul 33.2 TC. 33.2TR U/O voltage alarm - investigate & repair 3.33 Days
Continuous		  
05-Sep-23 08:30 08-Sep-23 17:00 ALTALINK RB 189L (373s Madden - 418L tap), 418L (20s Ghost - 189L tap), 418L (281s Johnson - 189L tap) component replacements 189L (str's 9-87) 3.35 Days
Daily		  
05-Sep-23 09:00 02-Oct-23 10:00 ATCO Outage 795s 702T (795s Zama) remove and replace bkr 506, leak repairs on 702T & 502VR as well as maintenance 27.04 Days
Continuous		  
05-Sep-23 09:00 13-Sep-23 17:30 ATCO RB 7L45 (798s Bridge Creek - 813s Little Smoky) 7L45D2 switch replacement, installation of temporary openers to create jumper J1 8.35 Days
Continuous		  
05-Sep-23 09:00 07-Sep-23 17:00 BCH Outage 5L98 (BCH Nicola - BCH Vaseux Lake) replace end of life insulators 2.33 Days
Continuous		 AB-BC
05-Sep-23 09:00 11-Sep-23 16:00 ALTALINK, TRANSALTA Outage 33s T1 (33s Spray) maintenance 6.29 Days
Continuous		  
05-Sep-23 09:00 12-Sep-23 17:00 BCH RB 2L294 (BCH A. A. Lambert - BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Nelway) hazard tree removals 23-01 to 38-01
7.33 Days
Daily		 AB-BC
05-Sep-23 09:15 08-Sep-23 16:00 ALTALINK, TRANSALTA Outage 33s T2 (33s Spray) maintenance 3.28 Days
Continuous		  
05-Sep-23 09:30 29-Sep-23 17:00 ATCO TE 2029s Protection & Control (2029s Heathfield) PRC relay testing 24.31 Days
Continuous		  
05-Sep-23 10:00 13-Sep-23 17:30 ATCO Outage 7L45 (798s Bridge Creek - 813s Little Smoky) 7L45D2 switch replacement 8.31 Days
Continuous		  
05-Sep-23 10:00 08-Sep-23 16:00 ATCO TE 815s Protection & Control (815s Goodfare) settings changes on 50BF/ 701, SPS/ 815S and 50-51-51N/ 701T 3.25 Days
Continuous		  
05-Sep-23 10:00 08-Sep-23 16:00 ATCO TE 823s Protection & Control (823s Wapiti) settings changes to 50BF/ 701 to receive anti-islanding trip 3.25 Days
Continuous		  
05-Sep-23 11:00 07-Sep-23 15:00 ALTALINK TE 62s Protection & Control (62s Brazeau Plant) upgrade all cards in T3 A87/50/51/T3 2.17 Days
Daily		  
05-Sep-23 12:00 07-Sep-23 18:00 ALTALINK Outage 808L (171s Redwater - 808AL tap), 171s 808E (171s Redwater) maintenance (str. 76-152) 2.25 Days
Continuous		  
05-Sep-23 13:00 08-Sep-23 17:30 ATCO Outage 959s SVC (959s Lanfine), 959s 921 (959s Lanfine) converter inspection, fire system inspection 3.19 Days
Continuous		  
06-Sep-23 07:00 18-Oct-23 17:00 EPCOR, ALTALINK Outage 987s CDS31 (987s Clover Bar), 921L (71s Lamoureux - 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		  
06-Sep-23 08:00 19-Sep-23 15:00 ALTALINK Outage 253s Blackie, 753L (65s High River - 253s Blackie), 851L (253s Blackie - 525s Carseland), 876L (179s Gleichen - 253s Blackie), 253s 753W (253s Blackie), 253s 851W (253s Blackie), 253s 876 (253s Blackie) replace multiple 138kV switches, wooden support beams to steel for switches and 138kV strain insulators 13.29 Days
Continuous		  
06-Sep-23 08:00 07-Sep-23 19:00 ATCO TE ATCO Telecom Equipment, 907s RTU/SCADA (907s Waddell) upgrading IRU radios 1.46 Days
Continuous		  
06-Sep-23 08:00 07-Sep-23 16:00 ENMAX TE Protection & Control (SS-32) 32sub 138 kV bus differential Zone 32 - relay protection test - 32RLY138-32.Z32 1.33 Days
Continuous		  
06-Sep-23 09:30 07-Sep-23 17:30 ALTALINK Outage 37s 82 (37s North Calder) 1st trip PRC5 maintenance minor 1.33 Days
Continuous		  
06-Sep-23 09:30 07-Sep-23 17:30 ALTALINK, EPCOR RB 920L (37s North Calder - 557s Castle Downs) ALTALINK - 37s82 1st trip PRC5 maintenance minor 1.33 Days
Continuous		  
06-Sep-23 11:00 07-Sep-23 18:00 ENMAX Outage 11.1TR (SS-11) EMERGENCY TAP CHANGER MTCE. 31 Hours
Continuous		  
06-Sep-23 12:00 07-Sep-23 16:00 ALTALINK Outage 275s 35 (275s Jenner), 275s T1 (275s Jenner) 275s 35 switch failure 28 Hours
Continuous		  
07-Sep-23 02:00 09-Sep-23 16:00 EPCOR Outage 987s GT2 (987s Clover Bar) p&c maintenance and mimic panel decomm 2.58 Days
Continuous		  
07-Sep-23 07:00 07-Sep-23 17:00 ALTALINK, EPCOR RB 909L (89s Ellerslie - 665s Dome) 909LE: aerial washing program 10 Hours
Continuous		  
07-Sep-23 07:00 07-Sep-23 17:00 ALTALINK, EPCOR RB 909L (89s Ellerslie - 665s Dome) aerial maintenance - washing program 10 Hours
Continuous		  
07-Sep-23 07:30 07-Sep-23 12:30 ALTALINK Outage 254s 413E (254s Coaldale) breaker maintenance 5 Hours
Daily		  
07-Sep-23 07:30 07-Sep-23 16:00 ALTALINK TE 510s Protection & Control (510s Sunnybrook) apply temp settings 8.5 Hours
Daily		  
07-Sep-23 08:00 08-Sep-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PP-9801 1.38 Days
Continuous		  
07-Sep-23 08:00 07-Sep-23 16:00 ATCO TE ATCO Telecom Equipment, 876s RTU/SCADA (876s Brintnell) brintnell sar mux net 1 chassis replacement 8 Hours
Continuous		  
07-Sep-23 08:00 27-Sep-23 18:00 SUNCOR Outage 30EDD-1 623T (30EDD-1), 30EDD-1 623 (30EDD-1), 30EDD-1 624 (30EDD-1), 30EDD-1 623TD (30EDD-1) BP - Isolation and PM and corrective on 623T, PL2-48 20.42 Days
Continuous		  
07-Sep-23 08:00 07-Sep-23 17:00 ALTALINK TE AltaLink Telecom Equipment complete microwave software upgrade to enhance the capacity of MW radio hop 9 Hours
Daily		  
07-Sep-23 08:00 07-Sep-23 17:00 ALTALINK TE 123s Protection & Control (123s Banff) relay setting changes 9 Hours
Daily		  
07-Sep-23 08:00 07-Sep-23 18:00 ENMAX Outage 2.81L (SS-2 - SS-9), 9.83L (SS-9 - SS-43), 9.3TR (SS-9), 9.2TR (SS-9), 9B138-9.83 (SS-9), 9B138-2.81 (SS-9), 43B138-9.83 (SS-43), 9MD138-9.2TR (SS-9), 9MD138-9.3TR (SS-9), SW83 (SS-9), SW84 (SS-9), 2MD138-2.81 (SS-2) fall substation wWashing, SW 88 retrieve nameplate info, SW84 at 9 sub - east jaw hot spot 10 Hours
Continuous		  
07-Sep-23 08:30 07-Sep-23 17:30 ALTALINK Outage 834L (320p Keephills - 384s Keystone), 320p 834X (320p Keephills), 384s 834 (384s Keystone) maintenance on 320p834X including 1st trips 9 Hours
Continuous		  
07-Sep-23 09:00 07-Sep-23 11:00 Saskpower Outage Sask Power SW 918, Sask Power SW 919 maintenance 2 Hours
Continuous		 AB-SK
07-Sep-23 09:30 07-Sep-23 17:30 ATCO Outage 2029s ACF12 (2029s Heathfield), 2029s 1219 (2029s Heathfield) filter bank inspections 8 Hours
Continuous		  
07-Sep-23 12:30 07-Sep-23 16:00 ALTALINK Outage 254s 414W (254s Coaldale) repairing hotspot on 254s11 3.5 Hours
Daily		  
08-Sep-23 06:00 29-Sep-23 18:00 ATCO, SUNCOR Outage 29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake), 29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake), 29EDD-1 260kV North Bus 1 (29EDD-1 Millennium), 29EDD-1 29EDD1s752 (29EDD-1 Millennium), 29EDD-1 29EDD1s152 (29EDD-1 Millennium), 29EDD-1 29EDD1s252 (29EDD-1 Millennium), 29EDD-1 29EDD1s452 (29EDD-1 Millennium), 29EDD-1 29EDD1s552 (29EDD-1 Millennium), 29EDD-1 952-101 (29EDD-1 Millennium), 29EDD-1 952-104 (29EDD-1 Millennium), 29EDD-1 29EDD1SPL9-1 (29EDD-1 Millennium), 29EDD-1 29EDD1SPL9-2 (29EDD-1 Millennium) perform 29PL9-2 OHSW replacement to OPGW,
29PL9-1/2 restringing from A frame to S1,
29PL9-1/2 crossarm replacement
, 260KV bus jumper replacement and N260B1 relays		 21.5 Days
Continuous		  
08-Sep-23 07:00 08-Sep-23 17:00 ALTALINK, EPCOR RB 909L (310p Sundance - 665s Dome) reclose block for aerial washing program 10 Hours
Continuous		  
08-Sep-23 07:00 08-Sep-23 17:00 ALTALINK, EPCOR RB 909L (310p Sundance - 665s Dome) aerial maintenance: washing program 10 Hours
Continuous		  
08-Sep-23 08:00 22-Oct-23 18:00 SUNCOR Outage 30EDD-1 626T (30EDD-1) 30EDD-1 626T Oil Gauge Discrepancies 44.42 Days
Continuous		  
08-Sep-23 08:00 08-Sep-23 18:00 ENMAX Outage 14.83L (SS-14 - SS-36), 14.2TR (SS-14), 14.4TR (SS-14), 14.1C (SS-14), 14.2C (SS-14), 14B138-14.83 (SS-14), 14MD138-14.2TR (SS-14), 14MD138-14.4TR (SS-14), SW84 (SS-14), SW87 (SS-14) fall substation washing 10 Hours
Continuous		  
08-Sep-23 08:30 08-Sep-23 12:00 ATCO RB 7L63 (780s Lubicon - 812s Norcen), 7L63 (788s Hotchkiss - 7LA63 tap) lift bottom phase of 144 kV for high load move 3.5 Hours
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		  
08-Sep-23 09:30 08-Sep-23 17:30 ATCO Outage 2029s ACF13 (2029s Heathfield), 2029s 1220 (2029s Heathfield) filter bank inspections and PRC 005 testing 8 Hours
Continuous		  
08-Sep-23 11:00 08-Sep-23 17:00 ATCO RB 7L23 (796s Nipisi - 7L23 tap), 7L23 (858s Narrows Creek - 7L23 tap) lift bottom phase of 144 kV for high load move 6 Hours
Continuous		  
09-Sep-23 08:00 10-Sep-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PP-9900 1.38 Days
Continuous		  
09-Sep-23 08:00 16-Sep-23 18:00 SUNCOR Outage 29EDD-85 29PS-320 (29EDD-85) maintenance 7.42 Days
Continuous		  
09-Sep-23 08:00 09-Sep-23 18:00 ENMAX, ALTALINK Outage 7.84L (SS-7 - SS-36), 36.81L (44s Bearspaw Plant - SS-36), 36.3TR (SS-36), 36.1TR (SS-36), 36B138-36.81 (SS-36), 36B138-36BT3 (SS-36) fall substation washing 10 Hours
Continuous		  
09-Sep-23 08:00 12-Sep-23 17:00 ALTALINK Outage 610L (83s Taber - 336s Fincastle), 336s 610 (336s Fincastle), 83s 610 (83s Taber) replace crossarms, re-string bottom phase between structure 9 & 10 3.38 Days
Continuous		  
09-Sep-23 08:00 09-Sep-23 18:00 ENMAX, ALTALINK IO 36.81L (44s Bearspaw Plant - SS-36) fall substation washing 10 Hours
Daily		  
10-Sep-23 06:30 11-Sep-23 18:00 ALTALINK Outage 673L (131s Moon Lake - 283s Violet Grove), 283s 673 (283s Violet Grove) replace damaged CT cabling, wiring CT JB 1.48 Days
Continuous		  
10-Sep-23 08:00 28-Sep-23 18:00 SUNCOR Outage 29EDD-63 30-252-11301 (29EDD-63) breaker shutter repair 18.42 Days
Continuous		  
10-Sep-23 08:00 10-Sep-23 12:00 ENMAX Outage 38.83L (SS-38 - SS-39), 38.1TR (SS-38), 38.3TR (SS-38), 38.1C (SS-38), 38B138-38.1CAP (SS-38), 38B138-38.83 (SS-38) fall substation washing 4 Hours
Continuous		  
10-Sep-23 12:00 10-Sep-23 18:00 ENMAX Outage 37.81L (SS-37 - SS-38), 38.2TR (SS-38), 38.3TR (SS-38), 38.1C (SS-38), 38B138-38.1CAP (SS-38), 38B138-37.81 (SS-38) fall substation washing 6 Hours
Continuous		  
11-Sep-23 07:00 21-Sep-23 17:00 ALTALINK Outage 1325L (510s Sunnybrook - AML 511s Crossings), AML 511s 4952 (AML 511s Crossings), AML 511s 4852 (AML 511s Crossings), 510s 2652 (510s Sunnybrook), 510s 2752 (510s Sunnybrook) station miscellaneous work and inspections 10.42 Days
Continuous		  
11-Sep-23 07:00 13-Sep-23 17:00 EPCOR Outage PM2403 (Poundmaker), PM2404 (Poundmaker) Poundmaker: 930L Zone, P&C- DFR Upgrade 2.42 Days
Continuous		  
11-Sep-23 07:00 14-Sep-23 17:00 EPCOR Outage 665s D2401 (665s Dome), 665s D2402 (665s Dome), 665s T1 (665s Dome) Dome: TX1 Zone, P&C- DFR Upgrade 3.42 Days
Continuous		  
11-Sep-23 07:00 15-Sep-23 17:00 EPCOR Outage EP 803s L2401 (EP 803s Lambton), EP 803s L2402 (EP 803s Lambton), EP 803s T1 (EP 803s Lambton) Lambton: LDS3 Repair and TX1 Leak Repair 4.42 Days
Continuous		  
11-Sep-23 07:00 11-Sep-23 16:00 EPCOR Outage 987s CC13 (987s Clover Bar) Cloverbar: CC13- P&C Breaker Fail Op Checks 9 Hours
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 07:00 11-Sep-23 17:00 ALTALINK TE 42s Protection & Control (42s Sarcee) remote settings change on 35.81L B protection 10 Hours
Daily		  
11-Sep-23 07:30 11-Sep-23 16:30 ALTALINK, CascadeP RB 1084L (39s Bickerdike - 1047s Whisky Jack) 1084L Reclose Block to re-tension OHSW downhaul guy and replace attachment hardware at the anchor on 1084L Str 5. The the anchor had broke due to faulty material and was replaced and the guy re-attached by Altalink. The guy needs to be re- tensioned. 9 Hours
Daily		  
11-Sep-23 08:00 12-Sep-23 17:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 635PP-9901 35kV GIS bus major maintenance 1.38 Days
Continuous		  
11-Sep-23 08:00 21-Sep-23 18:00 Syncrude Outage Mildred T14 (Syncrude Mildred Lake) 5 year maintenance and repairs
 10.42 Days
Continuous		  
11-Sep-23 08:00 22-Sep-23 17:00 ALTALINK TE 275s RTU/SCADA (275s Jenner) supervisory outages 11.38 Days
Continuous		  
11-Sep-23 08:00 22-Sep-23 17:00 ALTALINK TE 275s Protection & Control (275s Jenner) protection trip testing 11.38 Days
Continuous		  
11-Sep-23 08:00 25-Sep-23 10:30 ALTALINK, Lethbridge Outage 667L (146s MacDonald - 370s North Lethbridge), 146s 667 (146s Macdonald) Replace Protections on 146s667L 14.1 Days
Continuous		  
11-Sep-23 08:00 25-Sep-23 10:30 ALTALINK, Lethbridge Outage 667L (146s MacDonald - 370s North Lethbridge), 370s 667 (370s North Lethbridge) replace 146s667L Protections 14.1 Days
Continuous		  
11-Sep-23 08:00 28-Sep-23 18:00 SUNCOR TE 29EDD-1 RTU/SCADA (29EDD-1 Millennium) SCADA modification, testing and generating numerous false alarms 17.42 Days
Continuous		  
11-Sep-23 08:00 11-Sep-23 17:00 ATCO TE ATCO Telecom Equipment, ATCO TPR Outage, 7L75 (ATC 793s West Peace River - 800s Friedenstal) telecom work 9 Hours
Continuous		  
11-Sep-23 08:00 15-Sep-23 19:00 ATCO TE ATCO Telecom Equipment Full Outage to Link, Carrier replacement - Louise creek to Virginia hills
TPRNN118 / 6L126 A
TPRNT006 / 9L38 B
TPRNT008 / 9L938 B		 4.46 Days
Continuous		  
11-Sep-23 08:00 20-Sep-23 15:00 ALTALINK Outage 746s T2 (746s Sherwood Park) replace strain insulators 9.29 Days
Continuous		  
11-Sep-23 08:00 14-Sep-23 16:00 REDDEER Outage 194s T2 (194s South Red Deer) transformer testing 3.33 Days
Continuous		  
11-Sep-23 08:00 27-Sep-23 10:30 ALTALINK, Lethbridge Outage 667L (146s MacDonald - 370s North Lethbridge) Replace Protections on 146s667L. 16.1 Days
Continuous		  
11-Sep-23 08:00 11-Sep-23 18:00 ENMAX Outage 15.60L (SS-15 - SS-21), 21.61L (SS-21 - SS-34), 21.4TR (SS-21), 21B69-21.4TR (SS-21), 21B69-21.61 (SS-21), 21B69-15.60 (SS-21) fall substation washing, oil sampling 10 Hours
Continuous		  
11-Sep-23 08:00 12-Sep-23 16:00 ENMAX Outage 65B138-D81 (SS-65) relay protection test - 65RLY138-D81 (BM1) 1.33 Days
Continuous		  
11-Sep-23 08:00 14-Sep-23 16:00 ENMAX Outage 15.1TR (SS-15) transformer maintenance and testing 3.33 Days
Continuous		  
11-Sep-23 08:00 12-Sep-23 16:00 ENMAX TE Protection & Control (SS-32) relay protection test - 32RLY138-32.Z31 1.33 Days
Continuous		  
11-Sep-23 08:30 14-Sep-23 17:00 ALTALINK RB 189L (373s Madden - 418L tap), 418L (281s Johnson - 189L tap), 418L (20s Ghost - 189L tap) Component Replacements 189L (Str's 9-87) 3.35 Days
Daily		  
11-Sep-23 09:00 11-Sep-23 17:30 ATCO Outage 730s STATCOM (730s Rycroft), 730s 705 (730s Rycroft) Hitachi to complete outstanding warranty points 8.5 Hours
Continuous		  
11-Sep-23 09:30 11-Sep-23 18:00 ALTALINK Outage 808L (13s Deerland - 808AL tap) Maint. work (str. 75A switch) See also SAP: 286212 808L RB required for live line work near STR 75A to be issue same time as this GOI 8.5 Hours
Daily		  
11-Sep-23 09:30 11-Sep-23 18:00 ALTALINK RB 808L (13s Deerland - 808AL tap), 808L (171s Redwater - 808AL tap) Pile Install & boot replacement Str. 75A between (75A - 13s) Required for SAP: 286211 (13s-808L75A) GOI 8.5 Hours
Daily		  
11-Sep-23 10:00 14-Sep-23 14:00 ALTALINK TE 286s RTU/SCADA (286s Yasa) upgrading communications 3.17 Days
Daily		  
11-Sep-23 10:00 13-Sep-23 17:30 ATCO Outage 720s 901T (720s Wabasca), 720s 502R (720s Wabasca), 720s 504R (720s Wabasca) Repair 502RD & 901T deficiencies 2.31 Days
Continuous		  
11-Sep-23 10:00 15-Sep-23 17:00 ALTALINK TE 379s RTU/SCADA (379s Shell Canada Waterton) RTU configuration update 4.29 Days
Daily		  
11-Sep-23 10:00 12-Sep-23 16:00 ATCO TE 815s Protection & Control (815s Goodfare) settings changes, testing new logic to SPS/ 815S 30 Hours
Continuous		  
11-Sep-23 10:00 12-Sep-23 16:00 ATCO TE 731s Protection & Control (731s Elmworth) settings changes, testing new logic to SPS/ 731 30 Hours
Continuous		  
11-Sep-23 10:00 12-Sep-23 16:00 ATCO TE 823s Protection & Control (823s Wapiti) settings changes, testing new logic to 50BF/ 701 30 Hours
Continuous		  
11-Sep-23 11:00 12-Sep-23 17:00 ALTALINK TE 895s Protection & Control (895s Suffield) PRC maintenance 30 Hours
Daily		  
11-Sep-23 11:00 12-Sep-23 17:00 ALTALINK TE 310p Protection & Control (310p Sundance) standard breaker fail relay maintenance 30 Hours
Daily		  
11-Sep-23 13:00 12-Sep-23 17:00 ATCO Outage 6L09 (767s Oyen - 6L21 tap), 767s 601 (767s Oyen) Complete remaining cross arm changes on 6L09 between D7 and Oyen 767s 28 Hours
Continuous		  
12-Sep-23 07:00 13-Sep-23 18:00 ALTALINK Outage 808L (171s Redwater - 808AL tap), 171s 808E (171s Redwater) Maintenance (str. 76-152) 1.46 Days
Continuous		  
12-Sep-23 07:00 12-Sep-23 16:00 EPCOR Outage 987s CC24 (987s Clover Bar) Cloverbar: CC24- P&C Breaker Fail Op Checks and Mimic Panel Decomm 9 Hours
Continuous		  
12-Sep-23 07:00 14-Sep-23 17:00 ALTALINK TE 63s Protection & Control (63s Red Deer) Techs to implement temporary settings changes for relay 63s912L A21/L4. 2.42 Days
Daily		  
12-Sep-23 07:00 13-Sep-23 17:00 ENMAX, ALTALINK RB 1064L (74s Janet - 102s Langdon) Enmax request recloser blocking for fall line washing. 1.42 Days
Daily		  
12-Sep-23 07:00 13-Sep-23 17:00 ENMAX, ALTALINK RB 1065L (74s Janet - 102s Langdon) Enmax request recloser blocking for fall line washing. 1.42 Days
Daily		  
12-Sep-23 07:00 12-Sep-23 17:00 ALTALINK TE 447s Protection & Control (447s Enchant) Techs to complete and settings change on T1 Beckwith. 10 Hours
Daily		  
12-Sep-23 07:00 13-Sep-23 17:00 EPCOR Outage T1 (Rossdale) Rossdale: Emergency TX1 Tap Changer Leak Repair 1.42 Days
Continuous		  
12-Sep-23 07:30 12-Sep-23 18:30 ALTALINK RB 646L (237s Foothills - 678s Okotoks) Crews working at base of Structure #646L143 splicing fiber for communications to the future I-303s Saddlebrook Sub. 11 Hours
Daily		  
12-Sep-23 08:00 12-Sep-23 18:00 ENMAX, ALTALINK Outage 50L (44s Bearspaw Plant - SS-21), 21.2TR (SS-21), 21.1C (SS-21) Fall Substation Washing 10 Hours
Continuous		  
12-Sep-23 08:00 12-Sep-23 18:00 ENMAX, ALTALINK Outage 50L (44s Bearspaw Plant - SS-21) Fall Substation Washing. 10 Hours
Daily		  
12-Sep-23 08:00 21-Sep-23 17:00 ATCO TE 766s Protection & Control (766s Nevis), 755s Protection & Control (755s Cordel) 9L20 & 9L912 bypass relay work
 9.38 Days
Continuous		  
12-Sep-23 08:00 23-Sep-23 18:00 SUNCOR Outage 29PL6-22 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-2 29PT-3 (29EDD-2 Tar Island) isolation and PM and corrective on 29PP-1/2 buses. for this isolation there will be momentary loss during switching once for PL6-32 once the ring bus is closed this will come back online. 11.42 Days
Continuous		  
12-Sep-23 08:00 12-Sep-23 12:00 ALTALINK TE AltaLink Telecom Equipment MPLS upgrade and Raw socket conversion for 2002S-7705A and 7705B. Loss of visibility to 2002s, B1s, B2s, 1201L fault locator, Fraser Valley and 48s for 2hrs. affect RAS 77 1201L #1 and A21 1201L for 2hrs one channel at a time. All other circuits will be re-routed in 50ms. 4 Hours
Daily		  
12-Sep-23 08:00 12-Sep-23 16:00 ENMAX TE 8.1TR (SS-8) 8.1TR transformer B differential protection. 8 Hours
Continuous		  
12-Sep-23 08:00 12-Sep-23 16:00 ENMAX TE 8.2TR (SS-8) 8.2TR transformer B differential protection. 8 Hours
Continuous		  
12-Sep-23 08:00 12-Sep-23 16:00 ENMAX TE 8.5TR (SS-8) 8.5TR transformer B differential protection. 8 Hours
Continuous		  
12-Sep-23 08:00 12-Sep-23 18:00 ALTALINK IO AltaLink Telecom Equipment Crews working at base of Structure #646L143 splicing fiber for communications to the future I-303s Saddlebrook. The
fibers that are being spliced don't have any traffic on them therefore there isn't any risk of interrupting existing
communications.		 10 Hours
Continuous		  
12-Sep-23 08:30 13-Sep-23 08:30 ALTALINK Outage 163s T2 (163s Amoco Empress) to replace bolted connections to crimp connections on the cables feeding T2. 24 Hours
Continuous		  
12-Sep-23 09:00 12-Sep-23 18:00 ALTALINK Outage 77s 252 (77s Sagitawah) 1st trip & PRC5 maintenance & replace cabinet weather stripping on 77s252 9 Hours
Daily		  
12-Sep-23 09:00 12-Sep-23 10:00 ATCO TE ATCO Telecom Equipment telecom maintenance 60 Mins
Continuous		  
12-Sep-23 09:00 12-Oct-23 08:30 ALTALINK Outage 358s T1 (358s Amoco Brazeau) Shrink outage zone to 358s only. 358s652 breaker install, 358s12 PT replacement, T1 & VR1 maintenance, 25kV switch maintenance. RSLD 4 to be implemented at the end of the outage. 29.98 Days
Continuous		  
12-Sep-23 10:00 12-Sep-23 11:00 ATCO TE ATCO Telecom Equipment ~30 min impact to:West Peace Sub SCADA
TPRCP022 / 7L75 RAS A Kisituan / West Peace
TPRCP028 / 7L75 RAS B Kisituan / West Peace
TPRCP036 / 7L75A West Peace / Friedenstal
TPRCP037 / 7L75B West Peace / Friedenstal		 60 Mins
Continuous		  
12-Sep-23 10:00 12-Sep-23 16:00 ATCO TE 970s Protection & Control (970s Bourque) end to end testing to support CNRL relay upgrades at 859S Primrose
21A/7L574 		6 Hours
Continuous		  
12-Sep-23 11:00 12-Sep-23 11:30 CMH Outage MHS-2 MH69-221 (MHS-2 North Industrial), MH-50L (MHS-2 North Industrial - MHS-5 NE Crescent Heights) Open 69kV MH-50L line to eliminate current from line CT's to facilitate wiring for modified CT ratio for bus protection relay. MH69-50L will remain energized but open at breaker MH69-221 to interrupt current/power flow for maximum 30 minutes to facilitate wiring modification work. 30 Mins
Continuous		  
12-Sep-23 12:00 12-Sep-23 17:00 ALTALINK TE AltaLink Telecom Equipment MPLS upgrade and Raw socket conversion for 245S-7705A and 7705B. Loss of visibility to 3s, 245s, 32s, T32s, 48s, T48s, 49s, 48s for 2hrs. affect 76L/90L/58L, 56L TPR for 2hrs one channel at a time. All other circuits will be re-routed in 50ms 5 Hours
Daily		  
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		  
13-Sep-23 07:00 13-Sep-23 16:00 EPCOR Outage 987s CK725 (987s Clover Bar) Cloverbar: CK725- P&C Breaker Fail Op Checks and Mimic Panel Decomm 9 Hours
Continuous		  
13-Sep-23 07:00 14-Sep-23 17:00 ALTALINK TE 138s Protection & Control (138s Windy Flats) Techs to complete PRC maintenance on the following protections R1 B87/50/51/R1 URT60, R2 B87/50/51/R2 URT60, T2 A87/50/51/T2 SEL387E, T2 B87/50/51/T2 URT60, T1 A87/50/51/T1 SEL387E, T1 B87/50/51/MET/T1 T60. redundant protections will stay in service while Maintenace is occurring 1.42 Days
Daily		  
13-Sep-23 07:00 13-Sep-23 17:00 ALTALINK, CapitalPower Outage 1148L (251s Whitla - 1018s Shamrock), 1018s Shamrock, 1018s 7290-CB-008 (1018s Shamrock), 1018s 7290-CB-001 (1018s Shamrock) URGENT GOI required for completion of P5 Urgent repair.
New down haul guy wire needs to be installed.
 10 Hours
Continuous		  
13-Sep-23 08:00 13-Sep-23 17:00 ATCO RB 7L53 (706s Irish Creek - 7LA53 tap), 7L53 (700s Bonnyville - 7LA53 tap), 7LA53 (969s Lindbergh - 7L53 tap) Barehand (live line) new armor rod and vibration dampers on structures 501, 510, 511, 517, 526, 528. 9 Hours
Continuous		  
13-Sep-23 08:00 13-Sep-23 17:00 ALTALINK TE AltaLink Telecom Equipment, 405s RTU/SCADA (405s Waupisoo), 405s Protection & Control (405s Waupisoo) Upgrade MPLS node. Loss of visibility of 405s for 4 hours in the timeframe indicated. Loss of 796L TPR 9 Hours
Daily		  
13-Sep-23 08:00 14-Sep-23 17:00 ALTALINK TE 244s Protection & Control (244s Bowmanton) Techs to perform PRC maintenance on the follow redundant line protections one at a time: 892L B21/L15 URD60 892L A21/79/L15 SEL311C, 676L B21/67N/25SC/L9 URD60, 676L A21/67N/79/25SC/MW/MVAR/L9 SEL311C,Relays restored at the end of each day. 1.38 Days
Daily		  
13-Sep-23 08:00 13-Sep-23 12:00 ENMAX Outage 33.83L (SS-33 - SS-41), 33.1TR (SS-33) Fall Substation Washing 4 Hours
Continuous		  
13-Sep-23 08:00 14-Sep-23 16:00 ENMAX Outage 65B138-D82 (SS-65) Relay Protection Test - 65RLY138-D82 (BM3) 1.33 Days
Continuous		  
13-Sep-23 08:00 13-Sep-23 12:00 ALTALINK TE 198s RTU/SCADA (198s Blackfalds) Upgrade MPLS node. Loss of visibility of 198s & 482s for 4 hours in the timeframe indicated. 912L A & B RAS re-routed in 50 mSec. 4 Hours
Daily		  
13-Sep-23 08:30 13-Sep-23 17:00 ALTALINK TE 250p RTU/SCADA (250P Bighorn Plant) Techs to investigate a sub clock trouble and make possible changes to the site RTU supervisory/visibility will be down for approx 15min while RTU is updated - 8.5 Hours
Daily		  
13-Sep-23 09:00 13-Sep-23 16:30 ALTALINK Outage 77s 40 (77s Sagitawah) 1st trip & PRC5 maintenance on 77s40 7.5 Hours
Daily		  
13-Sep-23 09:00 13-Sep-23 17:00 ATCO RB 7L06 (784s Donnelly - ATC 793s West Peace River), 7L06 (784s Donnelly - 787s High Prairie) HOP to connect 902S Mobile substation to 7L08 @ 830S 8 Hours
Continuous		  
13-Sep-23 09:00 13-Sep-23 17:00 ALTALINK TE 250p Protection & Control (250P Bighorn Plant) Techs to replace battery for the following non redundant protection B138B 87/138B URB30 duration is 6 hours. Also standard meter replacements 250S SSTN and 250S 235L 8 Hours
Daily		  
13-Sep-23 09:05 13-Sep-23 16:30 ALTALINK Outage 163s T1 (163s Amoco Empress) replace bolted connections to crimp connections on the cables feeding T1 7.42 Hours
Continuous		  
13-Sep-23 10:00 13-Sep-23 10:30 CMH Outage MH69s2 T21 (MH69s2 North Industrial) Deenergize 69kV MH69-T-21 transformer to eliminate current from high side line CT's on MH69-206 breaker to facilitate replacement of damaged line CT terminal block(s). 30 Mins
Continuous		  
13-Sep-23 12:00 13-Sep-23 18:00 ENMAX Outage 33.84L (SS-33 - SS-43), 33.2TR (SS-33) Fall Substation Washing 6 Hours
Continuous		  
14-Sep-23 07:00 16-Sep-23 17:00 EPCOR Outage PM2401 (Poundmaker), PM2402 (Poundmaker) Poundmaker: 1098L Zone, P&C- DFR Upgrade 2.42 Days
Continuous		  
14-Sep-23 07:00 14-Sep-23 16:00 EPCOR Outage 987s CK726 (987s Clover Bar) Cloverbar: CK726- P&C Breaker Fail Op Checks and Mimic Panel Decomm 9 Hours
Continuous		  
14-Sep-23 07:00 14-Sep-23 17:00 ALTALINK TE AltaLink Telecom Equipment permanently moving the MPLS "B" fibre link between 404s & 251s 10 Hours
Continuous		  
14-Sep-23 08:00 14-Sep-23 12:00 ENMAX Outage 23.80L (74s Janet - SS-23), 23.4TR (SS-23) Fall Substation Washing 4 Hours
Continuous		  
14-Sep-23 08:00 14-Sep-23 12:00 ALTALINK Outage 74s 23.80W (74s Janet) fall substation washing. 4 Hours
Daily		  
14-Sep-23 08:00 14-Sep-23 16:00 ATCO Outage 7L53 (706s Irish Creek - 7LA53 tap) Replace 1 pole on Structure 7L53-410 That was damaged in a grass fire. 8 Hours
Continuous		  
14-Sep-23 08:00 15-Sep-23 17:00 ATCO TE 766s Protection & Control (766s Nevis) test new outputs to trip/close new 503 Breaker 1.38 Days
Continuous		  
14-Sep-23 09:00 22-Sep-23 16:00 ATCO, ALTALINK RB 1241L (510s Sunnybrook - 939s Livock) ATCO Aerial Patrol 8.29 Days
Continuous		  
14-Sep-23 09:00 14-Sep-23 13:00 ATCO RB 7L63 (780s Lubicon - 812s Norcen) HOP for Hot Lift at Location 7L63-922-923 4 Hours
Continuous		  
14-Sep-23 09:00 15-Sep-23 17:00 ALTALINK IO AltaLink Telecom Equipment Crews working at base of Structure #964L287 splicing fiber for communications to the future I-326s Murray Lake Sub.
The fibers that are being spliced don't have any traffic on them therefore there isn't any risk of interrupting existing
communications.		 1.33 Days
Continuous		  
14-Sep-23 10:00 14-Sep-23 17:00 ATCO TE 804s RTU/SCADA (804s Wintering Hills), ATCO TPR Outage, APS# 202 7L171-804S Overload Mitigation IRU radio firmware upgrades 7 Hours
Continuous		  
14-Sep-23 11:00 14-Sep-23 17:00 ATCO RB 7L23 (796s Nipisi - 7L23 tap), 7L23 (732s Mitsue - 7L23 tap) Hop for POSSIBLE Hot Lift at location 7L23-212, Measured at 8.85m, Loat is 7.5m = 1.35m clearance - meets minimum clearance for escort but could change with weather and loading. 6 Hours
Continuous		  
14-Sep-23 12:00 14-Sep-23 18:00 ENMAX Outage 2.80L (SS-2 - SS-23), 23.3TR (SS-23) Fall Substation Washing 6 Hours
Continuous		  
15-Sep-23 07:00 15-Sep-23 17:00 EPCOR Outage 72CN10 (987s Clover Bar - Namao), 987s CN723 (987s Clover Bar), N724 (Namao) P&C breaker fail op checks 10 Hours
Continuous		  
15-Sep-23 07:00 16-Sep-23 18:00 ALTALINK Outage 887L (48s Pocaterra - 978s BCH Britt Creek) GOI required for completion of P5 Urgent repair. Jumper cross arms need replacement due to tracking and burning on the Structure #22 1.46 Days
Continuous		 AB-BC
15-Sep-23 08:00 15-Sep-23 18:00 SUNCOR TE 29EDD-2 29PT-2 (29EDD-2 Tar Island) protection outage for settings correction 10 Hours
Continuous		  
15-Sep-23 08:00 20-Sep-23 18:00 ALTALINK RB 964L (244s Bowmanton - 964L tap), 964L (251s Whitla - 964L tap) prep for wildrose 2 project 5.42 Days
Daily		  
15-Sep-23 08:00 20-Sep-23 18:00 ALTALINK RB 983L (244s Bowmanton - 983L tap), 983L (251s Whitla - 983L tap) prep for wildrose 2 project 5.42 Days
Daily		  
15-Sep-23 08:00 15-Sep-23 12:00 ENMAX Outage 16.61L (SS-16 - SS-27), 27.1TR (SS-27), 27B69-16.61 (SS-27) fall substation washing 4 Hours
Continuous		  
15-Sep-23 12:00 15-Sep-23 18:00 ENMAX Outage 13.60L (SS-13 - SS-27), 27.2TR (SS-27), 13.4TR (SS-13), 27B69-13.60 (SS-27) fall substation washing 6 Hours
Continuous		  
15-Sep-23 12:30 15-Sep-23 18:00 ATCO RB 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) ATCO work on 7L199 5.5 Hours
Daily		  

Prepared On:   2023-09-06   15:25:02

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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