Alberta Electric System Operator
System Co-ordination Plan
2020-07-03 to 2020-07-10
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 31-Dec-20 16:00 EPCOR IO Rossdale C2 (Rossdale) forced outage 818.38 Days
Continuous		  
24-Oct-18 01:13 31-Dec-20 16:00 EPCOR IO Rossdale C1 (Rossdale) forced outage 799.66 Days
Continuous		  
19-Sep-19 08:00 31-Oct-20 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency: move reactor from 826s to 732s 408.33 Days
Continuous		  
01-Jan-20 08:00 31-Dec-20 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29L3-167, 29L3-141 , 29PL3-63, 29PL3-183, 29PT-241 & 29PL7-4, 29PP-47 & 29PT-576, 29PP-46 & 29PT-575, 144KV NODE,29PT-246, 144KV NODE,29PT-238, 29PT-257 & 29PL7-4,29PT-260 & 29PL7-4, 29PT-250&29PL7-3,29PT-236 & 29PL7-3,29PL3-153/152/196, 29PT-128 & 29PL7-10 365.42 Days
Daily		  
24-Jan-20 08:00 11-Sep-20 18:00 ATCO Outage 2029s ACF13 (2029s Heathfield) Forced outage repairs 231.38 Days
Continuous		  
31-Mar-20 08:00 18-Aug-20 16:00 ENMAX IO 2.84L (ENMAX 2 - ENMAX 8) P1456 ISD Oct 04,2020 140.33 Days
Continuous		  
01-Apr-20 08:00 30-Jul-20 17:00 EPCOR Outage 987s C72C1 (987s Clover Bar) cutover of new breaker fail protection to C72C1 breaker 120.38 Days
Continuous		  
14-Apr-20 08:00 31-Jul-20 16:00 ALTALINK Outage 5s C3 (5s East Calgary) reconfigure / replace caps 108.33 Days
Continuous		  
15-May-20 07:00 23-Sep-20 17:00 EPCOR Outage T2 (Namao) transformer replacement 131.42 Days
Continuous		  
15-May-20 07:00 21-Oct-20 17:00 EPCOR Outage T3 (Strathcona) transformer replacement 159.42 Days
Continuous		  
26-May-20 07:00 15-Aug-20 17:00 EPCOR TE Hardisty EPCOR BF protection upgrade at Hardisty S/S 81.42 Days
Continuous		  
04-Jun-20 08:00 07-Jul-20 17:00 ATCO TE 730S Rycroft, 829S Boucher Creek, 7L73 (730s Rycroft - 829s Boucher Creek) relay changes for addition of mobile sub at 829s Boucher Creek 33.38 Days
Continuous		  
04-Jun-20 08:00 09-Jul-20 14:00 ALTALINK Outage 895s T2 (895s Suffield) forced outage since Feb 35.25 Days
Continuous		  
08-Jun-20 07:00 31-Jul-20 17:00 EPCOR TE Woodcroft RTU/SCADA station SA system being upgraded and tested to accommodate future upgrade to ADMS system 53.42 Days
Continuous		  
08-Jun-20 08:00 17-Jul-20 16:00 ATCO TE 724s Hines Creek RTU/SCADA new alarms addition, RTU download and test 39.33 Days
Continuous		  
08-Jun-20 08:00 31-Aug-20 16:00 ATCO TE 826s 144kV bus (826s Margueritelake) protection upgrade 84.33 Days
Continuous		  
09-Jun-20 08:00 06-Jul-20 16:00 ATCO Outage 724s 601T (724s Hines Creek), 724s 601 (724s Hines Creek) work includes 72kV breaker replacement, fix bypass switch, new PT, and some other misc. items 27.33 Days
Continuous		  
15-Jun-20 08:00 03-Nov-20 16:00 ENMAX TE ENMAX 13 line protection upgrade for autoswitching and 138 kV bus differential relays 141.38 Days
Continuous		  
15-Jun-20 08:00 03-Jul-20 16:00 ENMAX Outage 13.1TR (ENMAX 13) Arc Flash Mitigation Project: protection outage and MV cable swap 18.33 Days
Continuous		  
15-Jun-20 08:00 03-Jul-20 16:00 ENMAX TE 13B138-3.84 (ENMAX 13) arc flash mitigation project: protection outage and MV cable swap, breaker close, breaker fail, and trip coil monitor 18.33 Days
Daily		  
15-Jun-20 08:00 03-Jul-20 16:00 ENMAX TE 138 KV PT (ENMAX 13), ENMAX 13 arc flash mitigation project: protection outage and MV cable swap for 2.83L, 3.84L, 13.82L 18.33 Days
Daily		  
15-Jun-20 08:00 03-Jul-20 14:00 ATCO TE 757s Battle River RTU/SCADA update RTU program, test points, modify HMI, for 59N protection addition 18.25 Days
Continuous		  
15-Jun-20 16:30 15-Jul-20 16:30 ATCO Outage 829s 701T (829s Boucher Creek) substation outage 30 Days
Continuous		  
15-Jun-20 16:30 06-Jul-20 16:30 ATCO TE 829s Boucher Creek RTU/SCADA install new configurations to the RTU 21 Days
Continuous		  
22-Jun-20 08:00 05-Jul-20 16:00 ATCO Outage 7L587 (822s Wolf Lake - 826s Marguerite Lake) P&C upgrade 13.33 Days
Continuous		  
22-Jun-20 08:00 03-Jul-20 16:00 ATCO TE 770s Threehills RTU/SCADA SCADA system modification and PLC removal 11.33 Days
Continuous		  
22-Jun-20 08:00 08-Jul-20 16:00 ENMAX Outage 16.2TR (ENMAX 16) arc flash mitigation project 16.33 Days
Continuous		  
22-Jun-20 08:00 24-Jul-20 16:00 ENMAX TE ENMAX 16 arc flash mitigation project 32.33 Days
Daily		  
22-Jun-20 08:00 24-Jul-20 16:00 ENMAX TE ENMAX 16 arc flash mitigation project 32.33 Days
Continuous		  
22-Jun-20 08:00 06-Jul-20 16:00 ATCO TE 826s 144kV bus (826s Margueritelake) protection upgrade on 7L587 14.33 Days
Continuous		  
22-Jun-20 08:00 06-Jul-20 19:00 Syncrude Outage Mildred T5 (Syncrude Mildred Lake) maintenance 14.46 Days
Continuous		  
22-Jun-20 09:00 24-Jul-20 18:00 ALTALINK Outage 180L (255s Vulcan - 928s East Stavely) OPGW install 32.38 Days
Continuous		  
22-Jun-20 10:00 17-Jul-20 17:00 ALTALINK RB 161L (255s Vulcan - 504s Queenstown) prep for OPGW install for the Claresholm project (P1879) 25.29 Days
Daily		  
22-Jun-20 18:30 29-Oct-20 15:00 ALTALINK IO 285s T2 (285s East Camrose) install new replacement T2 transformer & new switchgear building - info only 128.85 Days
Continuous		  
26-Jun-20 07:00 06-Jul-20 17:00 ALTALINK, EPCOR Outage 1059L (38s East Edmonton - 1059AL), 1059L (803s Lambton - 1059AL) line maintenance 10.42 Days
Continuous		  
26-Jun-20 07:00 06-Jul-20 17:00 ALTALINK IO 1059L (38s-E52s-E803s) EPCOR - Advice line maintenance and upgrades 10.42 Days
Continuous		  
26-Jun-20 08:00 04-Jul-20 16:00 ENMAX Outage 7.84L (ENMAX 7 - ENMAX 36) west Calgary ring road project -relocate a portion of 7.84L 8.33 Days
Continuous		  
29-Jun-20 07:00 10-Jul-20 17:00 EPCOR Outage 72RW3 (Rossdale - Woodcroft), W724 (Woodcroft), W725 (Woodcroft) disconnect replacement 11.42 Days
Continuous		  
29-Jun-20 08:00 03-Jul-20 16:00 ENMAX Outage 28.1TR (ENMAX 28) Reinhausen tapchanger maintenance, oil sampling 4.33 Days
Continuous		  
29-Jun-20 08:00 03-Jul-20 16:00 ENMAX, ALTALINK TE 693L (42s Sarcee - ENMAX 10) relays, protection testing 4.33 Days
Continuous		  
29-Jun-20 08:00 03-Jul-20 16:00 ALTALINK IO 693L (42s-C101s) Enmax - Relay ENMAX: Relays, Protection Testing - 10RLY138-693L - GE. B Protection remains in service, line will be protected at all times 4.33 Days
Continuous		  
29-Jun-20 08:00 07-Jul-20 16:00 ALTALINK IO 693L (42s-C10s) Enmax - Relay ENMAX: 832L – Relays, Protection Testing - 10RLY138-693L - GE. B Protection remains in service, line will be protected at all times 8.33 Days
Continuous		  
29-Jun-20 09:00 04-Jul-20 18:00 ALTALINK Outage 928L (17s Benalto - 42s Sarcee), 906L (17s Benalto - 42s Sarcee) maintenance on structures 5.38 Days
Continuous		  
29-Jun-20 10:00 07-Aug-20 14:00 ATCO TE 826s Marguerite Lake RTU/SCADA support commissioning during project execution 39.17 Days
Continuous		  
29-Jun-20 11:00 03-Jul-20 12:00 ALTALINK TE 396s Pincher Creek RTU/SCADA investigate communication issues for 613L, 412L, 185L, & 514L 4.04 Days
Daily		  
29-Jun-20 11:00 03-Jul-20 12:00 ALTALINK TE 396S Pincher Creek investigate and test communications for 613L, 412L, 185L, & 514L relays 4.04 Days
Daily		  
30-Jun-20 08:00 03-Jul-20 17:00 ATCO Outage 848s 704T (848s Ruth Lake), 7L71 (848s Ruth Lake - 2082s Dog Rib) maintenance, major testing and bird proofing 3.38 Days
Continuous		  
30-Jun-20 17:00 04-Jul-20 16:00 ALTALINK RB 50L (44s Bearspaw Plant - ENMAX 21) Calgary ring road project - relocate a portion of 7.84L line 3.96 Days
Continuous		  
30-Jun-20 17:00 04-Jul-20 18:00 ALTALINK IO 50L (44s-C21s) R/B Advice to ENMAX ENMAX work on 7.84L taking place under 50L 4.04 Days
Continuous		  
01-Jul-20 07:00 06-Jul-20 19:00 ALTALINK TE 899s Edgerton RTU/SCADA update configuration for new alarms 5.5 Days
Daily		  
02-Jul-20 07:00 03-Jul-20 17:00 ALTALINK TE 235s Entwistle RTU/SCADA update config to add alarms & supervisory will be in local control. 1.42 Days
Daily		  
02-Jul-20 08:00 06-Jul-20 16:00 ATCO TE 826s 704 (826s Marguerite Lake), 826s 701 (826s Marguerite Lake), 826s 240kV bus (826s Margueritelake), 826S Marguerite Lake to test trips and block closes to breaker 710 coming from the existing lockout relays in the equipment listed 4.33 Days
Continuous		  
03-Jul-20 07:00 03-Jul-20 17:00 ENMAX RB 2.83L (ENMAX 2 - ENMAX 5 - ENMAX 13) tree trimming 10 Hours
Daily		  
03-Jul-20 07:00 03-Jul-20 17:00 ENMAX RB 3.84L (ENMAX 3 - ENMAX 13) tree trimming 10 Hours
Daily		  
03-Jul-20 07:00 17-Jul-20 18:30 ALTALINK RB 551L (123s Banff - 953s Lake Louise) salvage of road accesses to ROW, excavation with track hoes 14.48 Days
Daily		  
03-Jul-20 07:30 04-Jul-20 17:30 ENMAX IO Altalink outage. 50L safety requirement; 906L/928L GOI 1.42 Days
Daily		  
03-Jul-20 07:30 04-Jul-20 17:30 ALTALINK RB 50L (44s Bearspaw Plant - ENMAX 21) safety requirement for 906L/928L work 1.42 Days
Daily		  
03-Jul-20 09:00 03-Jul-20 15:00 ALTALINK IO ATCO-System Operations Centre - Info ATCO will be operating off of the new ECC equipment from the SOC for a couple of hours, this should look like failover (loss of visibility for a couple minutes each way) 6 Hours
Daily		  
04-Jul-20 07:00 13-Jul-20 17:00 SUNCOR Outage 635EDD-1001 635-752-621 (635EDD-1001), 635EDD-1001 635-752-622 (635EDD-1001), 635PL7-1000 (635EDD-1000 - 635EDD-1001), 635EDD-1000 635-752-111 (635EDD-1000), 635EDD-1000 635-752-112 (635EDD-1000) maintenance of 144kV breakers, disconnects and CVTs 9.42 Days
Continuous		  
04-Jul-20 07:30 04-Jul-20 18:30 ATCO Outage 7L15 (841s Long Lake - 856s Kinosis) CNOOC will be completing a PM on the main disconnect switch (7L15D2) to our site, this job will require an isolation from Atco and a guarantee of isolation to be in place.
As well we’ll like to complete a quick Islanding trip test.		 11 Hours
Continuous		  
04-Jul-20 07:30 04-Jul-20 16:30 ALTALINK RB 715L (545s Provost - 650s Hansman Lake) install deep support pole on 715L121 for excavation near the structure as part of a 545S upgrade project 9 Hours
Daily		  
05-Jul-20 08:00 05-Jul-20 12:00 ATCO Outage 826S 903 add new breaker trip and block close coming from new 50BF/710 to trip breaker 903 4 Hours
Continuous		  
05-Jul-20 08:00 05-Jul-20 12:00 ENMAX Outage 14.83L (ENMAX 14 - ENMAX 36) stand a street light pole 4 Hours
Continuous		  
05-Jul-20 12:30 05-Jul-20 17:00 ATCO Outage 826S 907 add new breaker trip and block close coming from new 50BF/710 to trip breaker 907 4.5 Hours
Continuous		  
06-Jul-20 07:00 31-Jul-20 17:00 EPCOR Outage 987s CC24 (987s Clover Bar) breaker replacement 25.42 Days
Continuous		  
06-Jul-20 07:00 17-Jul-20 17:30 ATCO Outage 13L50 (2029s Heathfield - 2075s Newell) T11 testing 11.44 Days
Continuous		  
06-Jul-20 07:00 10-Jul-20 17:00 EPCOR Outage H723 (Hardisty Epcor) breaker fail cutover 4.42 Days
Continuous		  
06-Jul-20 07:00 17-Jul-20 17:30 ALTALINK IO 13L50 (A2029s - A2075s) ATCO - Info ATCO: T11 Testing ,Inspections ,IR Camera Installs, nLFL Testing and Expansion Tank Sensor Replacement. 11.44 Days
Continuous		  
06-Jul-20 07:00 31-Aug-20 17:00 EPCOR TE Poundmaker RTU/SCADA, Poundmaker station SA system being upgraded and tested to accommodate future upgrade to ADMS system 56.42 Days
Continuous		  
06-Jul-20 07:00 31-Aug-20 17:00 EPCOR TE 987S Cloverbar, 987s Cloverbar RTU/SCADA station SA system being upgraded and tested to accommodate future upgrade to ADMS system 56.42 Days
Daily		  
06-Jul-20 07:00 09-Jul-20 17:30 ALTALINK TE 108s Amelia RTU/SCADA add transformer intruder alarms. 3.44 Days
Daily		  
06-Jul-20 07:00 09-Jul-20 17:00 ALTALINK TE 325s Leduc RTU/SCADA configuration change to add alarms 3.42 Days
Daily		  
06-Jul-20 07:00 09-Jul-20 17:00 ENMAX RB 2.83L (ENMAX 2 - ENMAX 5 - ENMAX 13) tree trimming 3.42 Days
Daily		  
06-Jul-20 07:30 10-Jul-20 16:30 ALTALINK Outage 511s 1352 (511s Crossings), 511s ACF12 (511s Crossings) filter bank outage, maintenance, inspection 4.38 Days
Continuous		  
06-Jul-20 08:00 30-Aug-20 16:00 ATCO Outage 826s 902T (826s Marguerite Lake) breaker fail protection upgrade 55.33 Days
Continuous		  
06-Jul-20 08:00 17-Jul-20 16:00 ATCO TE 770s Threehills RTU/SCADA 770S Three Hills protection upgrade and 25kV breaker replacement project: SCADA system modification and PLC removal, modify RTU program, install new RTAC, remove PLC 11.33 Days
Continuous		  
06-Jul-20 08:00 19-Jul-20 18:00 SUNCOR Outage 29PT-341 (29EDD-34), 29EDD-34 952-142 (29EDD-34), 29EDD-34 952-143 (29EDD-34) line outage to perform 5/10yr PM 13.42 Days
Continuous		  
06-Jul-20 08:00 31-Jul-20 16:00 ENMAX Outage 13.2TR (ENMAX 13) Arc Flash Mitigation Project: protection outage and MV cable swap 25.33 Days
Continuous		  
06-Jul-20 08:00 21-Jul-20 18:00 ENMAX, ALTALINK Outage 36.81L (44s Bearspaw - ENMAX 36) Haskayne line raise project 15.42 Days
Continuous		  
06-Jul-20 08:00 21-Jul-20 18:00 ALTALINK IO 36.81L Enmax - Advice Haskayne line raise project 15.42 Days
Continuous		  
06-Jul-20 08:00 10-Jul-20 16:00 ENMAX Outage 162.3TR (162s Beddington), 162s 138-RB86 (162s Beddington), 162s 138-RB85 (162s Beddington) transformer tests and maintenance 4.33 Days
Continuous		  
06-Jul-20 08:00 06-Jul-20 12:00 ATCO TE 6L37 (724s Hines Creek - 800s Friedenstal) relay setting changes 4 Hours
Continuous		  
06-Jul-20 08:00 06-Jul-20 16:00 ENMAX Outage 39.3TR (ENMAX 39) investigate, replace rotten flex cables running to the LTC gas relays and LTC low temp lockout sensors 8 Hours
Continuous		  
06-Jul-20 08:00 09-Jul-20 16:00 ENMAX Outage 43.2TR (ENMAX 43) tapchanger inspection X-TC, Y-TC. check reversing switch(X), (Y). Oil sampling MT, X-TC, Y-TC. 3.33 Days
Continuous		  
06-Jul-20 08:00 07-Jul-20 17:00 ALTALINK TE AltaLink Radio Tower 9261R: upgrade radio between 120s Picture Butte and 9261R Chin Coulee 1.38 Days
Daily		  
06-Jul-20 08:00 09-Jul-20 14:00 ALTALINK Outage 895s T2 (895s Suffield) re-install new VR1 C phase regulator. 3.25 Days
Continuous		  
06-Jul-20 08:00 09-Jul-20 16:00 ALTALINK TE AltaLink Radio Tower 9018R: replace old MPLS node 3.33 Days
Continuous		  
06-Jul-20 08:00 09-Jul-20 16:00 ENMAX, ALTALINK IO 693L (42s Sarcee - ENMAX 10) 42s: block 693L "A" line protection for Enmax 3.33 Days
Continuous		  
06-Jul-20 08:00 07-Jul-20 16:00 ENMAX IO ENMAX 28 arc flash mitigation project - make wiring changes and test the ATS 1.33 Days
Daily		  
06-Jul-20 08:00 09-Jul-20 16:00 ENMAX, ALTALINK TE 693L (42s Sarcee - ENMAX 10) A protection relays & protection testing - 10RLY138-693L - SEL. 3.33 Days
Continuous		  
06-Jul-20 08:00 06-Jul-20 16:00 ENMAX TE 11.83L (162s Beddington - ENMAX 11) 162s: remove GE L90 from service to replace battery 8 Hours
Continuous		  
06-Jul-20 08:00 06-Jul-20 16:00 ENMAX TE 162s Beddington Z32A bus differential protection: remove GE B30 from service to replace battery 8 Hours
Continuous		  
06-Jul-20 09:00 09-Jul-20 18:00 ALTALINK Outage 178s T1 (178s Cynthia) leak repairs, SFRA test and doble test 3.38 Days
Continuous		  
06-Jul-20 09:00 13-Jul-20 15:30 REDDEER Outage 209s T1 (209s Timberlands) routine maintenance 7.27 Days
Continuous		  
06-Jul-20 09:00 13-Jul-20 15:30 ALTALINK IO 209s T1 OOS -Info City of Red Deer: Power transformer 209T1 routine maintenance. 7.27 Days
Continuous		  
06-Jul-20 09:00 10-Jul-20 17:00 BCH Outage 1L274 (48s Pocaterra - Britt Creek) LLP for hazard tree removals 4.33 Days
Continuous		 AB-BC
06-Jul-20 09:00 06-Jul-20 17:00 BCH Outage 5L52 (Custer - Ingledow) disconnect maintenance 8 Hours
Continuous		 AB-BC
06-Jul-20 10:00 13-Jul-20 15:00 ATCO Outage 7L40 (733s Simonette - 813s Little Smoky) XARM change out 7.21 Days
Continuous		  
06-Jul-20 10:00 06-Jul-20 16:00 ATCO Outage 6L56 (763s Hanna - 802s Michichi Creek), 802s 606 (802s Michichi Creek) breaker maintenance, testing 6 Hours
Continuous		  
06-Jul-20 10:00 17-Jul-20 16:00 ATCO TE 778s Big Valley RTU/SCADA 778S Big Valley gateway modifications for protection upgrade project 11.25 Days
Continuous		  
06-Jul-20 10:00 06-Jul-20 16:00 ATCO TE 7L73 (730s Rycroft - 829s Boucher Creek) 730S 7L73 21B relay setting change 6 Hours
Continuous		  
06-Jul-20 10:00 06-Jul-20 16:00 ATCO Outage 741s 705 (741s Fox Creek), 741s 705C (741s Fox Creek) PRC-005 trip coil, aux relay testing 6 Hours
Continuous		  
06-Jul-20 11:00 11-Jul-20 16:00 ALTALINK IO A898s902T Heart Lake - ATCO Info transformer test 5.21 Days
Continuous		  
06-Jul-20 11:00 11-Jul-20 16:00 ALTALINK IO 788L/789L (157s - 140s - A898s - 818s) A transformer test 5.21 Days
Continuous		  
06-Jul-20 11:00 11-Jul-20 16:00 ATCO, ALTALINK Outage 898s 501R (898s Heart Lake), 898s 902T (898s Heart Lake), 788L (898s Heart Lake - 788AL), 789L (898s Heart Lake - 1034s Margie) transformer test 5.21 Days
Continuous		  
06-Jul-20 11:00 11-Jul-20 16:00 ALTALINK IO A898s902T (Tx) ATCO Outage - Info transformer maintenace 5.21 Days
Continuous		  
06-Jul-20 11:15 07-Jul-20 17:45 ALTALINK Outage 285s T1 (285s East Camrose) maintenance 30.5 Hours
Continuous		  
06-Jul-20 11:30 06-Jul-20 16:30 ALTALINK TE 38s East Edmonton RTU/SCADA update alarms 5 Hours
Daily		  
06-Jul-20 11:30 06-Jul-20 17:00 ALTALINK TE 55S Olds relay settings changes 5.5 Hours
Daily		  
06-Jul-20 11:30 06-Jul-20 17:30 ALTALINK TE 5S East Calgary relay maintenance 6 Hours
Daily		  
06-Jul-20 11:45 08-Jul-20 16:30 ALTALINK TE 39S Bickerdike relay maintenance 2.2 Days
Daily		  
06-Jul-20 12:00 09-Jul-20 16:00 ALTALINK TE 650s Hansman Lake RTU/SCADA add alarms 3.17 Days
Daily		  
06-Jul-20 12:15 12-Jul-20 17:45 ALTALINK Outage 163s T5 (163s Amoco Empress) bushing replacement, maintenance, doble testing 6.23 Days
Continuous		  
06-Jul-20 12:15 09-Jul-20 16:45 ALTALINK Outage 799s T3 (799s Coleman) fix leaks 3.19 Days
Continuous		  
06-Jul-20 12:30 09-Jul-20 17:30 ALTALINK RB 743L/740L (39s-414s-426s-527s-101s) -R/B line clearance mitigation on 743L strs 1-67 3.21 Days
Continuous		  
06-Jul-20 12:30 06-Jul-20 17:00 ALTALINK TE 304s T2 (304s Shell Limestone) T2 relay maintenance work on S50, 51N & A87 relays 4.5 Hours
Daily		  
06-Jul-20 12:45 09-Jul-20 16:30 ALTALINK TE 178S Cynthia standard relay maintenance 3.16 Days
Daily		  
06-Jul-20 13:00 09-Jul-20 17:00 ALTALINK RB 730L (197s Bardo - 732L), 730L (285s East Camrose - 732L) component replacements on structures Range 1-61, North Section of 730L 3.17 Days
Continuous		  
07-Jul-20 07:00 16-Jul-20 17:00 EPCOR Outage 1058L (657s Summerside - 803s Lambton) line maintenance 9.42 Days
Continuous		  
07-Jul-20 07:00 16-Jul-20 17:00 ALTALINK IO 1058L Epcor - Info Epcor: line maintenance 9.42 Days
Continuous		  
07-Jul-20 07:00 07-Jul-20 18:00 ALTALINK Outage 747L (99s North St. Albert - 711L) fire mitigation to repair structure #63 11 Hours
Daily		  
07-Jul-20 07:00 07-Jul-20 17:00 EPCOR Outage T2 (Rossdale) isolation of reactors for UGD 10 Hours
Continuous		  
07-Jul-20 08:00 07-Jul-20 16:00 ENMAX Outage 162s 162B240-RB132 (162s Beddington) breaker maintenance, dashpot checks and SF6 sample 8 Hours
Continuous		  
07-Jul-20 08:00 07-Jul-20 17:00 ATCO Outage 898s 901 (898s Heart Lake), 898s 902 (898s Heart Lake), 9L22 (825s Whitefish Lake - 898s Heart Lake) test breakers 9 Hours
Continuous		  
07-Jul-20 08:00 08-Jul-20 17:00 ATCO Outage 7L59 (786s High Level - 7L59 tap) FAC-008 intolerable span violation mitigation, STR 5A require GOI to be changed 1.38 Days
Continuous		  
07-Jul-20 08:00 07-Jul-20 17:00 ALTALINK IO 9L22(A898s) Atco outage (info only) Atco work:901 & 902 @ 898S Heart Lake, 9L22 Open @ 898S Heart Lake. 9 Hours
Daily		  
07-Jul-20 08:00 07-Jul-20 18:00 ALTALINK Outage 156L (19s Wabamun - 156BL) remove 156L Str 1 – 2 OHSW and remove downhaul guy on 156L Str 1 to mitigate clearance violation to 896L 10 Hours
Daily		  
07-Jul-20 08:00 09-Jul-20 16:00 ATCO Outage 951s SVC (951s Thickwood) emergency outage to repair failed equipuipment to prevent trip
2.33 Days
Continuous		  
07-Jul-20 08:00 07-Jul-20 17:00 ALTALINK Outage 535s 5452 (535s Joffre) implement/function sync check changes on M388/389 relay 9 Hours
Daily		  
07-Jul-20 08:00 09-Jul-20 16:00 ENMAX Outage 31.1C (ENMAX 31), 31B138-31CAP (ENMAX 31) HV cap bank maintenance 2.33 Days
Continuous		  
07-Jul-20 08:00 08-Jul-20 17:00 ALTALINK Outage 336s T2 (336s Fincastle) replace temporary SS2 Tx.like for like to permanent one, complete bird cover on SS2 TX and 25kV UG bus structure 1.38 Days
Continuous		  
07-Jul-20 08:00 07-Jul-20 16:00 ENMAX Outage 12.2TR (ENMAX 12) replace liquid temperature gauge 8 Hours
Continuous		  
07-Jul-20 08:00 09-Jul-20 16:00 ENMAX TE 25B240-D134 (ENMAX 25) BMR-5 relay: protection testing 2.33 Days
Daily		  
07-Jul-20 08:30 09-Jul-20 14:30 ATCO Outage 7L55 (743s Sarah Lake - 809s Louise Creek), 743s 701 (743s Sarah Lake) breaker maintenance and PRC testing 2.25 Days
Continuous		  
07-Jul-20 08:30 07-Jul-20 16:30 ALTALINK RB 896L (19s Wabamun - 432s Carvel) remove 156L Str 1 – 2 OHSW and remove downhaul guy on 156L Str 1 to mitigate clearance violation to 896L 8 Hours
Daily		  
07-Jul-20 08:30 07-Jul-20 16:00 ATCO TE 768S Rowley PRC-005 - aux trip relay testing 7.5 Hours
Continuous		  
07-Jul-20 08:30 07-Jul-20 16:00 ATCO TE 768S Rowley PRC-005 - aux trip relay testing 7.5 Hours
Continuous		  
07-Jul-20 08:30 07-Jul-20 16:00 ALTALINK TE 42S Sarcee perform relay maintenance 7.5 Hours
Daily		  
07-Jul-20 08:30 07-Jul-20 16:30 ALTALINK TE 245S Seebe perform relay maintenance 8 Hours
Daily		  
07-Jul-20 08:30 08-Jul-20 16:30 ALTALINK TE 132S Ware Junction perform firmware upgrades 1.33 Days
Continuous		  
07-Jul-20 09:00 08-Jul-20 17:00 BCH Outage 5L51 (Custer - Ingledow) disconnect maintenance 1.33 Days
Continuous		 AB-BC
07-Jul-20 09:00 08-Jul-20 18:00 ALTALINK Outage 735L (171s Redwater - 233s Beamer) urgent repair/replace 735L Str 30 and Str 33 to mitigate line clearance violations 1.38 Days
Continuous		  
07-Jul-20 09:00 08-Jul-20 18:00 ATCO IO Weasel Creek AltaLink Notice: 947S Weasel Creek On Radial feed due to AltaLink outage on 735L 1.38 Days
Continuous		  
07-Jul-20 09:00 08-Jul-20 17:00 ATCO RB 7L155 (883s Gregoire - 2009s Willow Lake) straightening poles 1.33 Days
Continuous		  
07-Jul-20 10:00 07-Jul-20 14:00 ATCO TE 743s Sarah Lake RTU/SCADA swap out controller port switch 4 Hours
Continuous		  
07-Jul-20 10:00 07-Jul-20 17:00 MONTANA TE 120s Picture Butte RTU/SCADA update configuration 7 Hours
Daily		  
07-Jul-20 10:00 07-Jul-20 12:00 SUNCOR TE 29EDD-1 Millennium RTU/SCADA download RTU configuration 2 Hours
Continuous		  
07-Jul-20 11:00 07-Jul-20 16:00 ATCO RB 7L73 (730s Rycroft - 829s Boucher Creek) 829S Boucher Creek protection and SCADA upgrade 5 Hours
Continuous		  
07-Jul-20 13:30 07-Jul-20 15:30 ENMAX TE 653s Summit RTU/SCADA update operating system on network switches at 2 Hours
Continuous		  
08-Jul-20 08:00 08-Jul-20 18:00 ALTALINK Outage 452s T1 (452s B.F. Goodrich Fort Saskatchewan) investigate low gas indication on 452s10 & replace 1 head, 452s10 1st trip testing, 452s10 T1 testing 10 Hours
Daily		  
08-Jul-20 08:00 08-Jul-20 18:00 ATCO Outage 7L71 (718s Parsons Creek - 2082s Dog Rib) ground resistivity and line impendence testing at 718s Parsons Creek 10 Hours
Continuous		  
08-Jul-20 08:00 08-Jul-20 18:00 ALTALINK Outage 896L (19s Wabamun - 432s Carvel) raise cross arm on str 15 10 Hours
Daily		  
08-Jul-20 08:00 08-Jul-20 17:00 ALTALINK Outage 535s 5752 (535s Joffre) implement/function sync check changes on M388/389 relay 9 Hours
Daily		  
08-Jul-20 08:00 08-Jul-20 16:00 ENMAX Outage 162s 240-RB135 (162s Beddington) breaker maintenance 8 Hours
Continuous		  
08-Jul-20 08:00 08-Jul-20 16:00 ATCO IO 9L933 (132s Ware Junction - 801s Anderson) firmware upgrades to the following relay: 933L B21/79/L1 SEL421 8 Hours
Continuous		  
08-Jul-20 08:00 08-Jul-20 16:00 ALTALINK TE AltaLink Radio Tower, 535s Joffre RTU/SCADA, 755L (247s Piper Creek - 535s Joffre) 535s: upgrade MPLS node 8 Hours
Daily		  
08-Jul-20 08:00 08-Jul-20 16:00 ALTALINK TE 63s Red Deer RTU/SCADA, AltaLink Radio Tower 63s upgrade MPLS node 8 Hours
Daily		  
08-Jul-20 08:30 08-Jul-20 13:00 ALTALINK TE 933L (132s Ware Junction - 801s Anderson) 132s: perform firmware upgrade 4.5 Hours
Daily		  
08-Jul-20 08:30 08-Jul-20 16:30 ALTALINK TE 759L (87s Gaetz - 276s Prentiss) TPR maintenance 8 Hours
Daily		  
08-Jul-20 08:30 09-Jul-20 16:30 ALTALINK TE 5S East Calgary relay maintenance 1.33 Days
Continuous		  
08-Jul-20 09:00 08-Jul-20 17:00 ALTALINK Outage 58s T2 (58s Edson) strain insulators for the flex bus between 58s3 and 25kV bus require replacement 8 Hours
Daily		  
08-Jul-20 10:00 08-Jul-20 12:00 SUNCOR TE 29EDD-34 RTU/SCADA download RTU configuration 2 Hours
Continuous		  
08-Jul-20 13:15 08-Jul-20 17:45 ALTALINK Outage 172L (83s Taber - 172EL) maintenance on str 839 4.5 Hours
Daily		  
08-Jul-20 23:00 09-Jul-20 03:00 ALTALINK Outage 62s 11 (62s Brazeau) maintenance 4 Hours
Daily		  
09-Jul-20 03:00 09-Jul-20 07:00 ALTALINK Outage 62s 12 (62s Brazeau) maintenance 4 Hours
Daily		  
09-Jul-20 07:00 14-Jul-20 19:00 ALTALINK TE 478s Tucuman RTU/SCADA update configuration for new alarms 5.5 Days
Daily		  
09-Jul-20 07:00 10-Jul-20 17:00 ALTALINK Outage 521AL (867s Sundance Blow-Down - 521L) maintenance on structures 1.42 Days
Continuous		  
09-Jul-20 08:00 28-Jul-20 16:00 ENMAX Outage 16.1TR (ENMAX 16) Arc Flash Mitigation Project. protection outage and MV cable swap 19.33 Days
Continuous		  
09-Jul-20 08:00 09-Jul-20 17:00 ATCO, ALTALINK Outage 1086L/9L47 (852s Round Hill - 898s Heart Lake), 898s 902 (898s Heart Lake), 898s 903 (898s Heart Lake) breaker testing 9 Hours
Continuous		  
09-Jul-20 08:00 09-Jul-20 17:00 ALTALINK IO 9L47(A898s) Atco outage (info only) Atco work:breaker 902 & 903 @ 898S Heart Lake, 9L47 Open @ 898S Heart Lake 9 Hours
Daily		  
09-Jul-20 08:00 09-Jul-20 17:00 ALTALINK Outage 535s 6052 (535s Joffre) implement/function sync check changes on M388/389 relay 9 Hours
Daily		  
09-Jul-20 08:00 09-Jul-20 16:00 ALTALINK TE AltaLink Radio Tower 9063R Red Deer MPLS: upgrade MPLS node 8 Hours
Daily		  
09-Jul-20 08:00 09-Jul-20 16:00 ENMAX IO ENMAX 16 arc flash mitigation project; protection outage and MV cable swap, decommission station service transformer 8 Hours
Continuous		  
09-Jul-20 08:30 09-Jul-20 12:00 ALTALINK TE 694L (54s Fort Saskatchewan - 422s Westwood) 54s: replace failed module on B protection 3.5 Hours
Daily		  
09-Jul-20 08:30 09-Jul-20 16:30 ALTALINK TE 419s Chestermere RTU/SCADA, 419s Chestermere SCADA updates for Qualitrol & Winding temperature trips being removed, correct the HMI,RTU & ACC for the non electrical trip alarm changes 8 Hours
Daily		  
09-Jul-20 08:30 09-Jul-20 16:30 ALTALINK TE 419s Chestermere correct Dev 43 selector switch issues for site's RAS summer/winter scheme 8 Hours
Daily		  
09-Jul-20 10:00 09-Jul-20 12:00 SUNCOR TE 29EDD-2 Tar Island RTU/SCADA download RTU configuration 2 Hours
Continuous		  
09-Jul-20 12:45 09-Jul-20 17:00 ALTALINK TE 233s Beamer standard relay maintenance on S50/51A/T2, S50/51B/T2 S50/51C/T2 4.25 Hours
Daily		  
09-Jul-20 13:00 14-Jul-20 15:00 ALTALINK TE 43s Shell Canada Jumping Pound Jct RTU/SCADA add alarms 5.08 Days
Daily		  
10-Jul-20 06:30 12-Jul-20 17:30 ALTALINK RB 740L (39s-426s-414s-527s-101s), 743L (527s Coal Valley - 740L) line clearance mitigation on 743L strs 1-67 2.46 Days
Continuous		  
10-Jul-20 08:00 10-Jul-20 16:00 ENMAX Outage 26.83L (ENMAX 26 - ENMAX 65) SF6 sample 26B138-26.83. power factor test HV LA 65MD138-26.83 8 Hours
Continuous		  

Prepared On:   2020-07-02   4:54:33 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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