Alberta Electric System Operator
System Co-ordination Plan
2019-04-18 to 2019-04-26
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
18-Sep-18 18:00 01-May-19 14:00 ALTALINK Outage 221s T3 (221s Sunken Lake) transformer removal 224.83 Days
Continuous		  
24-Sep-18 08:00 30-Apr-19 15:00 ATCO TE 709s Vegreville RTU/SCADA new RTU download and test 218.29 Days
Continuous		  
04-Oct-18 09:00 15-Jan-20 20:00 Syncrude Outage Mildred T3 (Syncrude Mildred Lake) damaged transformer repairs 468.5 Days
Continuous		  
05-Oct-18 08:00 30-Jun-19 16:00 EPCOR Outage Rossdale C2 (Rossdale) forced outage 268.33 Days
Continuous		  
24-Oct-18 01:13 30-Jun-19 16:00 EPCOR Outage Rossdale C1 (Rossdale) forced outage 249.62 Days
Continuous		  
27-Nov-18 07:00 30-May-19 17:00 EPCOR TE 72CN10 (987s Clover Bar - Namao) protection upgrade 184.38 Days
Continuous		  
01-Feb-19 08:00 10-May-19 16:00 ENMAX TE ENMAX 22 construction for 138kV BT 98.29 Days
Continuous		  
19-Feb-19 07:30 31-Jul-19 17:00 EPCOR TE 816S Petrolia DC battery bank split and blocking of 240 kV protection 162.35 Days
Daily		  
19-Feb-19 07:30 31-Jul-19 17:00 EPCOR TE 816s Petrolia RTU/SCADA DC battery bank split 162.35 Days
Daily		  
19-Feb-19 07:30 31-Jul-19 17:00 EPCOR TE 814S Bellamy DC battery bank split and blocking to 1055L protection 162.35 Days
Daily		  
19-Feb-19 07:30 31-Jul-19 17:00 ALTALINK, EPCOR TE 1044L (805s Jasper - 816s Petrolia) DC battery bank split and blocking to 1044L protection 162.35 Days
Daily		  
01-Mar-19 07:00 19-Jul-19 17:00 ATCO Outage 796s 702T (796s Nipisi) switching to isolate 702T and 25kV switch gear bus 2 140.38 Days
Continuous		  
11-Mar-19 08:00 30-Aug-19 16:00 ATCO TE 796s Nipisi RTU/SCADA PLC and RTU download and testing 172.33 Days
Continuous		  
12-Mar-19 14:53 06-Jun-19 12:00 ENMAX, ALTALINK Outage 1080L (ENMAX 65 - ENMAX 25) forced outage 85.88 Days
Continuous		  
18-Mar-19 08:00 09-Aug-19 17:00 EPCOR Outage Hardisty T3 (Hardisty) transformer replacement 144.38 Days
Continuous		  
25-Mar-19 10:00 30-Apr-19 17:00 EPCOR Outage Namao T3 (Namao) emergency repair. 36.29 Days
Continuous		  
26-Mar-19 07:00 30-Jun-19 17:00 EPCOR TE 511s Victoria RTU/SCADA IP address update and cutover of RTU to new network 96.42 Days
Daily		  
26-Mar-19 07:00 30-Jun-19 17:00 EPCOR TE 511S Victoria relay protection settings update for system automation 96.42 Days
Daily		  
01-Apr-19 08:00 18-Apr-19 16:00 ENMAX Outage 15.2TR (ENMAX 15) HV CT addition, maintenance and repair 17.33 Days
Continuous		  
01-Apr-19 10:00 18-Apr-19 08:00 ALTALINK, Lethbridge Outage 725L (674s Lethbridge Bowron - 725BL54) replace 674S725W switch 16.92 Days
Continuous		  
01-Apr-19 10:00 18-Apr-19 08:00 ALTALINK IO 725L (L674s-15s) Open End - LETHBRIDGE I replace 674S725W switch 16.92 Days
Continuous		  
01-Apr-19 10:00 15-Jul-19 17:00 ALTALINK Outage 251s SR1 (251s Whitla),251s 252 (251s Whitla),251s 552 (251s Whitla),251s Whitla 240kV Bus 1 construct new equipment 105.29 Days
Continuous		  
01-Apr-19 17:30 18-Apr-19 07:30 ALTALINK, Lethbridge Outage 725L (674s Lethbridge Bowron - 725BL54) component replacements 16.58 Days
Continuous		  
02-Apr-19 07:00 06-May-19 17:00 ATCO Outage 754s 701T (754s Ksituan River),754s 701TCS (754s Ksituan River) new protection for 701T AND 701TCS 34.42 Days
Continuous		  
03-Apr-19 07:30 03-May-19 17:00 EPCOR Outage 72KN23 (Namao - Kennedale) pothead repair 30.4 Days
Continuous		  
08-Apr-19 08:00 25-Apr-19 20:00 Syncrude Outage AURORA Aurora G40 Substation (72kV / 4.16kV) PM
AN Tailings Distributor Equipment		 17.5 Days
Continuous		  
08-Apr-19 13:00 02-May-19 17:00 ATCO Outage 745s 601T (745s Slave Lake),745s Slave Lake RTU/SCADA transformer swap, construction & commissioning 24.17 Days
Continuous		  
13-Apr-19 07:00 07-May-19 16:00 Medicine Hat Outage MH69s1 MH69_13 (MH69s1 Power P Switchyard),MH69s1 MH69_17 (MH69s1 Power P Switchyard) replacement of breakers 24.38 Days
Continuous		  
15-Apr-19 07:00 19-Apr-19 19:00 ENMAX Outage 1.81L (ENMAX 20 - ENMAX 1) 1.80L/1.81L cable replacement project 4.5 Days
Continuous		  
15-Apr-19 07:00 19-Apr-19 19:00 ALTALINK IO 1.81L Enmax - Info HV breaker maintenance and cable replacement project 4.5 Days
Continuous		  
15-Apr-19 07:00 18-Apr-19 17:00 ALTALINK Outage 104s T1 (104s Watson Creek),615L (602s Cold Creek - 104s Watson Creek),104s Watson Creek 138kV Bus 104s substation expansion project, install & connect SS2, install 138kV rigid bus, add motor mech to 104s2 3.42 Days
Continuous		  
15-Apr-19 07:00 18-Apr-19 17:00 EPCOR Outage 557s T1 (557s Castle Downs) doble / SFRA 3.42 Days
Continuous		  
15-Apr-19 07:30 23-Apr-19 07:45 ALTALINK Outage 104s T2 (104s Watson Creek),104s T3 (104s Watson Creek),104s Watson Creek 69kV Bus,530L (2085s Sheridan - 104s Watson Creek) complete scope on 530L, close Open Point 'A' on 530L at fenceline of 104s 8.01 Days
Continuous		  
15-Apr-19 08:00 18-Apr-19 17:00 ALTALINK TE 38s East Edmonton RTU/SCADA ethernet switch firmware and configuration update 3.38 Days
Daily		  
15-Apr-19 08:00 18-Apr-19 17:00 ALTALINK TE 919L (310p Sundance - 77s Sagitawah),310P Sundance RTU/SCADA update RTU configuration 3.38 Days
Daily		  
15-Apr-19 08:00 28-Apr-19 18:00 SUNCOR Outage 29EDD-1 Millennium,29EDD-1 29EDD1s952 (29EDD-1 Millennium),29EDD-1 29EDD1s1052 (29EDD-1 Millennium),29EDD-1 Millennium 260kV West Bus 1 5 years maintenance 13.42 Days
Continuous		  
15-Apr-19 08:00 03-May-19 16:00 ENMAX Outage 31.2TR (ENMAX 31) test transformer 18.33 Days
Continuous		  
15-Apr-19 08:00 18-Apr-19 17:00 EPCOR Outage 987s C2403 (987s Clover Bar) breaker maintenance 3.38 Days
Continuous		  
15-Apr-19 08:00 18-Apr-19 16:00 ENMAX Outage 16.1TR (ENMAX 16) corrective maintenance 3.33 Days
Continuous		  
15-Apr-19 09:00 30-Apr-19 17:00 BCH Outage 5L72 (Mica Creek - Nicola) urgent repair work 15.33 Days
Continuous		 AB-BC
16-Apr-19 07:00 05-May-19 18:00 ALTALINK Outage 1206L (89s Ellerslie - 12s Heartland) spacer and damper replacement on structures #4 - 191 19.46 Days
Continuous		  
16-Apr-19 07:15 23-Apr-19 17:45 ALTALINK Outage 739L (14s Devon - 305s Acheson) replace Str # 523 On 739L 7.44 Days
Continuous		  
16-Apr-19 07:30 05-May-19 17:30 ALTALINK RB 1212L (89s Ellerslie - 12s Heartland) spacer and damper replacement 19.42 Days
Daily		  
16-Apr-19 08:00 18-Apr-19 16:00 ENMAX Outage 15.60L (ENMAX 21 - ENMAX 15) HV breaker maintenance 15B69-15.60 2.33 Days
Continuous		  
16-Apr-19 08:00 18-Apr-19 17:00 ALTALINK TE 72s Leismer RTU/SCADA update RTU configurations 2.38 Days
Continuous		  
16-Apr-19 09:00 18-Apr-19 17:00 ALTALINK Outage 887L (48s Pocaterra - BCH Britt Creek) BCH urgent work 2.33 Days
Continuous		 AB-BC
17-Apr-19 07:00 18-Apr-19 18:00 ALTALINK Outage 700L (422s Westwood - 746s Sherwood Park) ICMP on structures #28,29,60,61,62,63,64,65,80 1.46 Days
Continuous		  
17-Apr-19 07:00 18-Apr-19 17:00 EPCOR IO ALTALINK - 700L (746s-746DL19-422s) – GOI ICMP on structures #28,29,60,61,62,63,64,65,80 1.42 Days
Continuous		  
17-Apr-19 08:00 25-Apr-19 20:00 Syncrude Outage Aurora T3 (Aurora) maintenance 8.5 Days
Continuous		  
17-Apr-19 08:00 23-Apr-19 17:00 SUNCOR TE 635EDD-1001 protection A and B 6.38 Days
Continuous		  
17-Apr-19 08:00 18-Apr-19 16:00 ENMAX Outage 5.1TR (ENMAX 5) tapchanger inspection 1.33 Days
Continuous		  
17-Apr-19 08:00 22-Apr-19 17:00 ALTALINK Outage 706L (54s Fort Saskatchewan - 706L72B) line move from structure 54A to 59 & ICMP on structures # 33,60,63,66,67,68 5.38 Days
Continuous		  
17-Apr-19 23:00 18-Apr-19 03:00 ALTALINK Outage 62s11 (62s Brazeau) maintenance 4 Hours
Continuous		  
17-Apr-19 23:00 18-Apr-19 06:00 PANC, CALPINE TE CAVALIER Cavalier RTU/SCADA,CEC Calpine Energy Center RTU/SCADA Telus replacing card 7 Hours
Continuous		  
18-Apr-19 03:00 18-Apr-19 07:00 ALTALINK Outage 62s12 (62s Brazeau) maintenance 4 Hours
Daily		  
18-Apr-19 07:00 18-Apr-19 18:00 Medicine Hat, CMH Outage MH69s3 MH69_302 (MH69s3 South Ridge),20L (MH69S-6 Riverview - MH69S-3 South Ridge),MH69s3 MH138_317 (MH69s3 South Ridge) breaker maintenance 11 Hours
Continuous		  
18-Apr-19 07:30 18-Apr-19 15:30 ALTALINK, Lethbridge Outage 725BL (725BL54 - 240s McBride Lake),725L (674s Lethbridge Bowron - 15s Fort MacLeod) closing Open Point 'A' @ structure #103 and perform maintenance on 725BL54 8 Hours
Daily		  
18-Apr-19 07:30 18-Apr-19 15:30 ALTALINK IO 725L (L674s-15s-I_240s) Advice to COL install conductor between 674S1 and 674S3 and energize new 674S725W 8 Hours
Daily		  
18-Apr-19 08:00 18-Apr-19 14:00 ALTALINK, Lethbridge Outage 725L (674s Lethbridge Bowron - 15s Fort MacLeod) replace 674S725W switch 6 Hours
Continuous		  
18-Apr-19 08:00 18-Apr-19 18:00 ENMAX Outage 31.84L (ENMAX 31 - ENMAX 32),32.3TR (ENMAX 32),32PT138-Z32 (ENMAX 32) spring substation washing 10 Hours
Continuous		  
18-Apr-19 08:00 18-Apr-19 16:00 ENMAX Outage 36.5TR (ENMAX 36),16.63L (ENMAX 16 - ENMAX 36) HV breaker maintenance 8 Hours
Continuous		  
18-Apr-19 08:30 18-Apr-19 13:00 ALTALINK IO 7L760 (A767s - 163s) ATCO Info 767S 700PT1 PCB oil sample 4.5 Hours
Daily		  
18-Apr-19 09:00 18-Apr-19 12:00 Syncrude Outage Syncrude Mildred Lake substation transformer (1-PTR72-179) 72kV/72kV outage to fix issues of protection relay 3 Hours
Continuous		  
18-Apr-19 09:00 18-Apr-19 17:00 ATCO Outage 767s 701T (767s Oyen),7L132 (767s Oyen - 959s Lanfine),7L760 (7L760D2 - 767s Oyen) 767s Oyen 700PT1 PCB oil sample required,
701 breaker & hot spot repairs		 8 Hours
Continuous		  
19-Apr-19 08:00 19-Apr-19 18:00 ENMAX Outage 7.1TR (ENMAX 7),7.84L (ENMAX 36 - ENMAX 7),ENMAX 36 B138-7.84 (ENMAX 36),ENMAX 7 B138-7BT3 (ENMAX 7) substation washing 10 Hours
Continuous		  
19-Apr-19 08:00 19-Apr-19 18:00 ALTALINK IO 7.84L Enmax - Info substation washing 10 Hours
Daily		  
20-Apr-19 07:00 24-Apr-19 19:00 ENMAX Outage 1.80L (ENMAX 28 - ENMAX 1) 1.80L/1.81L Cable replacement project - complete the installation of our ground wells at the tower site 4.5 Days
Continuous		  
20-Apr-19 07:00 10-May-19 16:00 Medicine Hat Outage MH69s1 MH69_21 (MH69s1 Power P Switchyard) replacement of breakers 20.38 Days
Continuous		  
20-Apr-19 09:00 20-Apr-19 18:00 ENMAX Outage 28.1TR (ENMAX 28),1.80L (ENMAX 28 - ENMAX 1) spring substation washing 9 Hours
Continuous		  
22-Apr-19 07:00 22-Apr-19 18:00 Medicine Hat, CMH Outage MH69s6 MH69_611 (MH69s6 Riverview),20L (MH69S-6 Riverview - MH69S-3 South Ridge),MH69s6 MH138_620 (MH69s6 Riverview) breaker maintenance 11 Hours
Continuous		  
22-Apr-19 07:30 26-Apr-19 16:00 SHELL Outage 402s T1 (402s Shell Expansion 1) transformer testing 4.35 Days
Continuous		  
22-Apr-19 08:00 23-Apr-19 17:00 ALTALINK TE 478s Tucuman RTU/SCADA update RTU 1.38 Days
Continuous		  
22-Apr-19 08:00 23-Apr-19 17:00 ALTALINK TE 648s Metiskow RTU/SCADA updating RTU 1.38 Days
Continuous		  
22-Apr-19 08:00 28-Apr-19 20:00 Syncrude Outage AURORA Aurora G34 Substation (72kV / 4.16kV) PM,
AN tailings distributor equipment		 6.5 Days
Continuous		  
22-Apr-19 08:00 23-Apr-19 17:00 ALTALINK TE 38s East Edmonton RTU/SCADA maintenance 1.38 Days
Daily		  
22-Apr-19 08:00 06-May-19 16:30 ATCO TE 754s Ksituan River RTU/SCADA update RTU and HMI 14.35 Days
Continuous		  
23-Apr-19 07:00 23-Apr-19 16:00 Medicine Hat, CMH Outage MH69s6 MH69_614 (MH69s6 Riverview),8L (MH69S-6 Riverview - MH69S-1 Power Plant) breaker maintenance 9 Hours
Continuous		  
23-Apr-19 07:00 23-Apr-19 17:00 EPCOR Outage Woodcroft T2 (Woodcroft),TX2 @ Woodcroft ITM measurement 10 Hours
Continuous		  
23-Apr-19 07:00 15-May-19 08:00 ALTALINK Outage 530L (2085s Sheridan - 104s Watson Creek) continue work on 530L 22.04 Days
Continuous		  
23-Apr-19 07:00 03-May-19 17:00 EPCOR Outage 524s T1 (524s Owen Corning) regasketing transformer 10.42 Days
Continuous		  
23-Apr-19 07:00 23-Apr-19 17:00 ALTALINK Outage 508S Lakesend customer work on their equipment 10 Hours
Daily		  
23-Apr-19 07:00 30-Nov-19 17:00 EPCOR TE EPCOR Network Riverview S/S addition will affect the redundant path on SONET Network 221.46 Days
Continuous		  
23-Apr-19 07:00 25-Apr-19 17:00 ALTALINK Outage 615L (602s Cold Creek - 104s Watson Creek) 104s substation expansion project 2.42 Days
Continuous		  
23-Apr-19 07:00 27-Apr-19 17:00 EPCOR Outage Namao T3 (Namao),72CN10 (987s Clover Bar - Namao) extended zone to decom protection (72CN10 NIS) 4.42 Days
Continuous		  
23-Apr-19 07:30 01-Sep-19 17:00 EPCOR TE Garneau blocking of 72 kV BF protection for relay maintenance 131.4 Days
Continuous		  
23-Apr-19 07:30 01-May-19 16:30 ALTALINK RB 180L (15s Fort Macleod - 928s East Stavely),197L (349s Stavely - 928s East Stavely) working within proximity building temporary bypass line 8.38 Days
Daily		  
23-Apr-19 08:00 25-Apr-19 17:00 ALTALINK TE 650s Hansman Lake RTU/SCADA update RTU 2.38 Days
Continuous		  
23-Apr-19 08:00 02-May-19 17:00 ALTALINK TE 310P Sundance RTU/SCADA update RTU 9.38 Days
Daily		  
23-Apr-19 08:00 23-Apr-19 17:00 ALTALINK, EPCOR Outage 947L (89s Ellerslie - 987s Clover Bar),987s C2402 (987s Clover Bar),987s C2404 (987s Clover Bar) Repair on CDS28 9 Hours
Continuous		  
23-Apr-19 08:00 26-Apr-19 17:00 EPCOR Outage 987s C2404 (987s Clover Bar) breaker maintenance 3.38 Days
Continuous		  
23-Apr-19 08:00 30-Apr-19 18:00 ALTALINK Outage 804L (86s Bigstone - 40s Wetaskiwin) replacing structures 7.42 Days
Continuous		  
23-Apr-19 08:00 23-Apr-19 16:00 ENMAX Outage 25B240-D142 (ENMAX 25),25B240-D139 (ENMAX 25),ENMAX 25 B240-D136 (ENMAX 25),ENMAX 25 B240-D133 (ENMAX 25),ENMAX 25 240kV North Bus 240kV Bus outage to assist repairs to the faulted cable on 1080 8 Hours
Continuous		  
23-Apr-19 08:00 26-Apr-19 17:00 ATCO TE ATCO Radio Tower move communication rack on 709s Vegreville radio 3.38 Days
Continuous		  
23-Apr-19 08:00 03-May-19 18:00 ALTALINK, Lethbridge RB 725AL (618s Riverbend - 725L tap),725L (111s Coalbanks - 674s Lethbridge Bowron) breaker replacement @ L674s725E 10.42 Days
Daily		  
23-Apr-19 09:00 26-Apr-19 18:00 ALTALINK Outage 100L (895s Suffield - 498s Tilley) moving 100L356B & 666L3 3.38 Days
Continuous		  
23-Apr-19 09:00 25-Apr-19 18:00 ALTALINK Outage 89s 752 (89s Ellerslie) 240kV breaker maintenance 2.38 Days
Continuous		  
23-Apr-19 09:00 26-Apr-19 18:00 ATCO, ALTALINK Outage 807AL (402s Shell Expansion I - 807L tap),807L (233s Beamer - 807L tap),807L (410s Josephburg - 402s Scotford Expansion) clearance mitigation structure #75 3.38 Days
Continuous		  
23-Apr-19 09:00 26-Apr-19 17:00 ALTALINK Outage 887L (48s Pocaterra - BCH Britt Creek) BCH urgent work 3.33 Days
Continuous		 AB-BC
23-Apr-19 09:30 26-Apr-19 17:30 ALTALINK RB 666L (498s Tilley - 28s West Brooks) moving 100L356B & 666L3 3.33 Days
Continuous		  
23-Apr-19 10:00 09-May-19 18:00 ALTALINK, Lethbridge Outage 725AL (618s Riverbend - 725L tap),725L (111s Coalbanks - 674s Lethbridge Bowron) replace 674S725E switch and component replacement 16.33 Days
Continuous		  
23-Apr-19 10:00 23-Apr-19 18:00 ALTALINK Outage 726L (37s North Calder - 71s Lamoureux),71s 252 (71s Lamoureux),71s 352 (71s Lamoureux) hotspot repair 8 Hours
Daily		  
23-Apr-19 10:00 26-Apr-19 17:00 ATCO TE 729s Otauwau RTU/SCADA update RTU and HMI 3.29 Days
Continuous		  
23-Apr-19 11:00 02-May-19 16:00 ALTALINK Outage 310P 3352 (310p Sundance),310P 69 (310p Sundance),310P 234N (310p Sundance),310P 512N (310p Sundance),310p T30 (310p Sundance),310P Sundance 69kV Bus,310P T33 (310P Sundance) migrate and commission controls and protection to new RTU and LAN 9.21 Days
Continuous		  
23-Apr-19 11:00 24-Apr-19 17:00 ENMAX IO Altalink outage. 2s 138kV CAP maintain circuit switcher 5s71 and 5s7 138kV SF6 gas breaker 30 Hours
Continuous		  
23-Apr-19 11:15 25-Apr-19 15:45 ALTALINK Outage 87s T1 (87s Gaetz) transformer maintenance 2.19 Days
Continuous		  
23-Apr-19 11:15 24-Apr-19 16:45 ALTALINK Outage 5s 7 (5s East Calgary),5s C4 (5s East Calgary),5s C3 (5s East Calgary) maintain circuit switcher 5s71 and 5s7 breaker 29.5 Hours
Continuous		  
23-Apr-19 11:30 24-Apr-19 16:30 ALTALINK TE 138s Windy Flats RTU/SCADA update RTU and devices 29 Hours
Daily		  
23-Apr-19 12:00 25-Apr-19 17:00 ALTALINK TE 310P Sundance RTU/SCADA update devices 2.21 Days
Daily		  
24-Apr-19 07:00 24-Apr-19 16:00 Medicine Hat Outage MH69s6 MH69_607 (MH69s6 Riverview) breaker maintenance 9 Hours
Continuous		  
24-Apr-19 07:00 24-Apr-19 17:00 EPCOR Outage Woodcroft T3 (Woodcroft) ITM measurement 10 Hours
Continuous		  
24-Apr-19 07:00 24-Apr-19 18:00 ALTALINK Outage 54L (118s Canmore - 54L172) urgent outage to modify underbuild 11 Hours
Continuous		  
24-Apr-19 07:45 25-Apr-19 16:30 ALTALINK Outage 447s T1 (447s Enchant) doble 1.36 Days
Continuous		  
24-Apr-19 08:00 25-Apr-19 17:00 ALTALINK TE 89s Ellerslie RTU/SCADA update RTU 1.38 Days
Daily		  
24-Apr-19 08:00 25-Apr-19 17:00 ALTALINK TE 221s Sunken Lake RTU/SCADA update RTU 1.38 Days
Daily		  
24-Apr-19 08:00 26-Apr-19 17:00 ALTALINK RB 748L (267s Killarney Lake - 277s Hayter) component replacements - structure range (15-178) Live Line Work 2.38 Days
Daily		  
24-Apr-19 08:00 01-May-19 16:30 ATCO TE 777s Vilna RTU/SCADA update RTU and HMI 7.35 Days
Continuous		  
24-Apr-19 08:00 25-Apr-19 16:00 ENMAX Outage 37.2TR (ENMAX 37) tap changer heater replacement 1.33 Days
Continuous		  
24-Apr-19 08:00 24-Apr-19 18:00 ALTALINK TE 847L (39s Bickerdike - 406s Fickle Lake) settings change and testing 10 Hours
Daily		  
24-Apr-19 08:30 25-Apr-19 15:00 ATCO Outage 840s 503 (840s McNeill) install cables In filter bay 30.5 Hours
Continuous		 AB-SK
24-Apr-19 08:30 24-Apr-19 16:30 ALTALINK TE 916L (42s Sarcee - 5s East Calgary) replace the communication module on 916L A87/21 @ 42s & 5s 8 Hours
Daily		  
24-Apr-19 09:00 24-Apr-19 17:30 ALTALINK TE 349s T1 (349s Stavely) temp monitor replacement. 8.5 Hours
Daily		  
24-Apr-19 09:00 24-Apr-19 16:00 ALTALINK TE 287s Hazelwood RTU/SCADA,214s Innisfail RTU/SCADA,AltaLink Radio Tower 9433R - 214s Radio - TPR/RTU outage 7 Hours
Daily		  
24-Apr-19 09:00 24-Apr-19 15:00 ATCO TE 717S Ethel Lake 144kV Bus bus protection setting changes 6 Hours
Continuous		  
24-Apr-19 09:00 24-Apr-19 15:00 ATCO TE 7L66 (715s Leming Lake - 717s Ethel Lake) 717s 21B_7L66 setting change 6 Hours
Continuous		  
24-Apr-19 09:00 24-Apr-19 16:30 ATCO TE 717s Ethel Lake RTU/SCADA setting change on station controller and associated DPAC 7.5 Hours
Continuous		  
24-Apr-19 11:00 24-Apr-19 15:00 ALTALINK Outage 250p11 (250p Bighorn Plant) maintenance 4 Hours
Daily		  
24-Apr-19 23:00 25-Apr-19 06:30 ALTALINK Outage 235S Entwistle,672L (235s Entwistle - 131s Moon Lake),744L (235s Entwistle - 744L88C),799L (443s South Mayerthorpe - 235s Entwistle),156L (19s Wabamun - 235s Entwistle) transformer and 25kV breaker maintenance 7.5 Hours
Continuous		  
25-Apr-19 07:00 25-Apr-19 16:00 Medicine Hat Outage MH69s6 MH69_604 (MH69s6 Riverview) breaker maintenance 9 Hours
Continuous		  
25-Apr-19 07:00 28-Apr-19 18:30 ALTALINK Outage 20s T1 (20s Ghost),113L (20s Ghost - 33s Spray),150L (20s Ghost - 150L46),859L (20s Ghost - T793s Horse Creek) Replace 20s149, 20s153, T1 CT’s Replace bus conductor and strain Insulators 3.48 Days
Continuous		  
25-Apr-19 07:15 26-Apr-19 17:45 ALTALINK Outage 408L (252s Jarrow - 51s Wainwright) replace Str. 4 on 408L 1.44 Days
Continuous		  
25-Apr-19 07:30 25-Apr-19 17:00 ALTALINK TE 615L (602s Cold Creek - 104s Watson Creek) 602s settings change and testing on 615L A21 and then B21 9.5 Hours
Daily		  
25-Apr-19 08:00 25-Apr-19 18:00 ALTALINK TE AltaLink Radio Tower replace 9516R and 9393R radios 10 Hours
Daily		  
25-Apr-19 08:00 28-Apr-19 16:00 ENMAX Outage 3.82L (ENMAX 3 - ENMAX 8) hydrovaccing near line to replace water valve 3.33 Days
Continuous		  
25-Apr-19 08:00 27-Apr-19 16:00 ENMAX Outage 13.4TR (ENMAX 13),13.60L (ENMAX 27 - ENMAX 13) breaker maintenance and SF6 gas sample 2.33 Days
Continuous		  
25-Apr-19 08:30 25-Apr-19 17:00 ALTALINK TE 20S Ghost working on the breaker control modules 8.5 Hours
Daily		  
25-Apr-19 09:00 25-Apr-19 16:00 ATCO TE 837s 702T (837s Mahihkan) troubleshoot nuisance alarm (station Major) 7 Hours
Continuous		  
25-Apr-19 09:00 25-Apr-19 17:00 ALTALINK TE 356s Milo RTU/SCADA update devices 8 Hours
Daily		  
25-Apr-19 09:00 25-Apr-19 15:00 ALTALINK TE 5s T1 (5s East Calgary) UR card replacement (TX Prot (T1 B)) 6 Hours
Daily		  
25-Apr-19 09:00 25-Apr-19 13:00 ALTALINK Outage 250p22 (250p Bighorn Plant) maintenance 4 Hours
Daily		  
25-Apr-19 17:00 27-Apr-19 09:00 ALTALINK Outage 104s Watson Creek 69kV Bus,530L (2085s Sheridan - 104s Watson Creek) 69kV bus outage for any remaining Iconic scope 1.67 Days
Continuous		  
26-Apr-19 07:00 26-Apr-19 18:00 Medicine Hat Outage MH69s6 MH69_608 (MH69s6 Riverview),MH69s6 MH69_616 (MH69s6 Riverview) breaker maintenance 11 Hours
Continuous		  
26-Apr-19 08:00 26-Apr-19 12:00 ENMAX Outage 54.81L (ENMAX 54 - ENMAX 65) repair required on line 4 Hours
Continuous		  

Prepared On:   2019-04-17   3:30:54 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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