Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2016-06-04

The table below contains the significant transmission outages submitted as tentative to the AESO.
These Outages have not yet necessarily been approved, but are listed for awareness and coordination purposes.
An Outage has been considered significant for this table if it meets any one (1) or more of the following criteria:
  1. it affects a transmission facility operating at two hundred and forty (240) kV or greater;
  2. it affects an intertie;
  3. it affects an element connecting facilities owned by two (2) or more different legal owners of transmission facilities;
  4. it affects an element that connects a generating unit or an aggregated generating facility to the interconnected electric system;
  5. it requires the ISO to issue a dispatch or directive for generation in order to facilitate the planned outage;
  6. it affects a cutplane limit;
  7. it limits or reduces the operability of a synchronous condenser, static VAr compensator, static compensator or other similar dynamic device; or
  8. it affects high voltage direct current facilities.
Note: Where a transmission outage requires generation curtailments, the adjustments to generation will typically happen in the hours before the scheduled transmission outage and in the hour after the element is returned to service.

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Owner From To Duration Element Scheduled Activity Affected Intertie
ENBRIDGE 26-Jun-13 08:00 01-Jul-16 17:00 1,101.38 Days
Continuous
Hay Lake North Series Capacitor,Marias South Series Capacitor Series capacitor banks were removed from service due to the Subsynchronous Control Interaction (SSCI) with connected wind farm. AB-MATL
ALTALINK 01-May-16 00:00 30-Aug-16 17:00 121.71 Days
Continuous
755L (63s Red Deer - 247s Piper Creek),1083L (63s Red Deer - 288s Wolf Creek) rebuild 1083L,rebuild 755L  
ATCO 03-May-16 10:25 30-Jun-16 16:00 58.23 Days
Continuous
9L23 (848s Ruth Lake - 977s Salt Creek) forced outage due to Fort MacMurray fire  
ENMAX, ALTALINK 09-May-16 08:00 24-Jun-16 08:00 46 Days
Continuous
1003L (74s Janet - ENMAX 25),ENMAX 25 240kV North Bus L to J: 1003L cable fault - replacement  
ALTALINK, ENMAX 16-May-16 08:00 17-Jun-16 16:00 32.33 Days
Continuous
42s Sarcee 138 kV South Bus,150L (42s Sarcee - 150L47),42s T2 (42s Sarcee),28.80L (42s Sarcee - ENMAX 28),30.81L (42s Sarcee - ENMAX 30),3L (42s Sarcee - 272s Springbank) replace strain insulators, switches and move capbank to north bus  
ALTALINK 25-May-16 06:00 27-Jul-16 06:00 63 Days
Continuous
250p11 (250p Bighorn) maintenance  
ATCO 25-May-16 07:00 05-Jun-16 17:30 11.44 Days
Continuous
845s 702 (845s Big Mountain),845s 701 (845s Big Mountain),7L45 (845s Big Mountain - 798s Bridge Creek) replace line protection and add breaker fail protection  
ALTALINK 27-May-16 08:00 06-Jun-16 18:00 10.42 Days
Daily
396s T1 (396s Pincher Creek),396s T2 (396s Pincher Creek),396s T3 (396s Pincher Creek),412L (396s Pincher Creek - 632s Russell),613L (396s Pincher Creek - 103s Goose Lake) fix awitches & replace 138kV Bus PT AB-BC
EPCOR 30-May-16 07:00 04-Jun-16 17:00 5.42 Days
Continuous
557s 2403 (557s Castle Downs) breaker maintenance and Doble  
EPCOR 05-Jun-16 07:00 08-Jun-16 17:00 3.42 Days
Continuous
CGB3 outage @ Cloverbar BF Protection Upgrade  
ATCO 06-Jun-16 07:00 19-Jun-16 17:30 13.44 Days
Continuous
749S 702PT,749S 703,749S 702,7L03,749S 144kv BUS Replace line protection., 7L03 will be open ended at 749s, 144kV ring will be open @ 749s  
EPCOR 07-Jun-16 07:00 17-Jun-16 17:00 10.42 Days
Continuous
TX1 outage @ Dome S/S Upgrade of 240 kV BF Protection  
ALTALINK 07-Jun-16 08:00 07-Jun-16 16:00 8 Hours
Daily
405s796 (796L) - GOI DDR Install  
ALTALINK 07-Jun-16 08:00 07-Jun-16 17:00 9 Hours
Daily
37sT6 (Tx 18309) GOI Replace Slack Span Insulators on Secondary Bus between T6 and 37s4  
ALTALINK 07-Jun-16 08:00 09-Jun-16 16:00 2.33 Days
Continuous
1075L (132s - 28s) - GOI SCADA Upgrade Project  
ALTALINK 07-Jun-16 11:00 07-Jun-16 18:00 7 Hours
Daily
412L (396s Pincher Creek - 632s Russell) install 472s mobile at 396s AB-BC
ALTALINK 07-Jun-16 13:30 09-Jun-16 16:00 2.1 Days
Continuous
760L (163s-760L41) Advice Replace 163s2 PT  
ALTALINK 08-Jun-16 08:00 08-Jun-16 17:00 9 Hours
Daily
132s12 - GOI 240kV breaker maintenance  
ALTALINK 08-Jun-16 08:00 09-Jun-16 17:00 1.38 Days
Continuous
28s12 - GOI 240kV breaker mtce  
ALTALINK 08-Jun-16 08:00 11-Jun-16 15:00 3.29 Days
Continuous
HVDC 510s (ACF14) Filter Bank - Advice Rewire of DC Power Cable To 510s1452  
ALTALINK 08-Jun-16 09:00 10-Jun-16 17:00 2.33 Days
Continuous
2L113 (B2s-B1s) BC outage Info Only Deadend Insulator Replacements AB-BC
ALTALINK 09-Jun-16 08:00 09-Jun-16 17:00 9 Hours
Daily
138s R1(TX18907) Advice Windy Flats Project: Replace ITM  
EPCOR 10-Jun-16 07:00 05-Jul-16 17:00 25.42 Days
Continuous
1055L Petrolia -Argyl Tower Refurbishment  
ENMAX, ALTALINK 10-Jun-16 17:01 24-Jun-16 17:00 14 Days
Continuous
1003L (74s Janet - ENMAX 25) L to J: 1003L Cable Fault - Replacement  
EPCOR 13-Jun-16 07:00 14-Jun-16 17:00 1.42 Days
Continuous
J2406 @ Jasper Doble  
ALTALINK 13-Jun-16 07:00 16-Jun-16 17:30 3.44 Days
Continuous
74s552 & 74s252(932L) GOI Replace CTs on 74s552(932L)  
ALTALINK 13-Jun-16 08:30 16-Jun-16 17:00 3.35 Days
Continuous
681s T1 (681s Bannerman),681s 252 (681s Bannerman),681s 1152 (681s Bannerman) funtional testing to prove all trips are working correctly  
BCH 13-Jun-16 09:00 23-Jun-16 17:00 10.33 Days
Continuous
2L294 (Cranbrook - A.A. Lambert) insulator replacements and arcing horn installations AB-BC
ALTALINK 13-Jun-16 10:00 13-Jun-16 16:00 6 Hours
Daily
905L (19s - 37s) GOI Salvage telecom tower at 37s that is in close proximity  
ALTALINK 13-Jun-16 11:00 16-Jun-16 17:00 3.25 Days
Continuous
37s76 - GOI 240kV breaker maintenance and replace ops counter  
ALTALINK 13-Jun-16 12:00 18-Jun-16 17:00 5.21 Days
Continuous
163s T1 (Tx18483) GOI Replace 163s T1 Bushings, T1 Maintenance  
ALTALINK 14-Jun-16 08:00 16-Jun-16 16:00 2.33 Days
Continuous
931L (132s - 28s) - GOI SCADA Upgrade Project  
EPCOR 15-Jun-16 07:00 16-Jun-16 17:00 1.42 Days
Continuous
CD2404 @ Castledowns Doble  
EPCOR 15-Jun-16 07:00 16-Jun-16 17:00 1.42 Days
Continuous
J2405 @ Jasper Doble  
ENMAX 15-Jun-16 08:00 15-Jun-16 16:00 8 Hours
Continuous
162s. 240KV Bus. 162B240-RB132. 162B240-RB131. Fall Substation Washing  
EPCOR 16-Jun-16 07:00 16-Jun-16 17:00 10 Hours
Continuous
CCP7214 @ Cloverbar Breaker Maint  
ENMAX 16-Jun-16 08:00 16-Jun-16 16:00 8 Hours
Continuous
162s. 240KV Bus. 162B240-RB135. 162B240-RB134. Fall Substation Washing  
EPCOR 19-Jun-16 07:00 28-Jun-16 17:00 9.42 Days
Continuous
12TC1 & Bus 1 @ Genesee Protection Upgrade  
ALTALINK 19-Jun-16 09:00 24-Jun-16 17:00 5.33 Days
Continuous
163s T2 (Tx18482) GOI Replace 163s T2 Bushings, T2 Maintenance  
ENMAX 20-Jun-16 07:00 20-Jun-16 16:00 9 Hours
Continuous
36.81L Lock & Unlock coil circuit modifcation on 36B138-36.81. Insulator change structure #20  
ALTALINK 20-Jun-16 07:00 20-Jun-16 16:00 9 Hours
Daily
36.81L - Enmax Advice ENMAX maintenance (Lock & Unlock coil circuit modifcation on 36B138-36.81. Insulator change structure #20)  
EPCOR 20-Jun-16 07:00 21-Jun-16 17:00 1.42 Days
Continuous
J2404 @ Jasper Doble  
ALTALINK 20-Jun-16 07:00 23-Jun-16 17:30 3.44 Days
Continuous
74s352 & 74s252(929L) GOI Replace CTs on 74s552(929L)  
EPCOR 20-Jun-16 07:00 24-Jun-16 17:00 4.42 Days
Continuous
CD2405 @ Castledowns Breaker Maint & Doble  
ATCO 20-Jun-16 07:00 24-Jun-16 17:00 4.42 Days
Continuous
888S 240kV BUS,848S 240kV Bus Protection,9L58 Upgrade 21 A & 21B/9L58 protection on both ends, 240kV partial bus outage at both ends, 848s is a breaker and a third scheme, 888s is a breaker and a half scheme.  
EPCOR 20-Jun-16 07:00 29-Jun-16 17:00 9.42 Days
Continuous
Tx2 outage @ Dome S/S Upgrade of 240 kV BF Protection  
ATCO 20-Jun-16 07:00 07-Jul-16 17:00 17.42 Days
Continuous
813S 704,813S 144kV Bus,813S 703,813S 703PT,7L45 Replace line protection and add Breaker Fail protection, 144kV ring bus open @ 813s, 798s bridge ck will be radial fed from 845s.  
ALTALINK 20-Jun-16 08:00 24-Jun-16 16:00 4.33 Days
Continuous
760L (163s-394s) GOI Remove line from service due to LOA on concurrent 669L outage for breaker replacement  
ALTALINK 20-Jun-16 08:00 24-Jun-16 16:00 4.33 Days
Continuous
681s152,681s1052& T2 Advice for customer Funtional testing to prove all trips are working correctly.  
ATCO 20-Jun-16 09:30 22-Jun-16 14:00 2.19 Days
Continuous
732S 901 Partial PM on Bkr 901, 240kV ring will be open  
ALTALINK 21-Jun-16 08:00 21-Jun-16 20:00 12 Hours
Daily
72s T1 & 25kV Bus - GOI Replace T1 Bushings, Add Bird Cover-Up, 72s3 Fuse Repairs, 72s319W Maintenance, 72s319E Maintenance  
ALTALINK 21-Jun-16 08:00 23-Jun-16 16:00 2.33 Days
Continuous
1053L (132s - 324s) - GOI SCADA Upgrade Project  
EPCOR 22-Jun-16 07:00 23-Jun-16 17:00 1.42 Days
Continuous
J2403 @ Jasper Doble  
ALTALINK 22-Jun-16 08:00 23-Jun-16 17:00 1.38 Days
Continuous
72s552 - GOI 240kV Breaker mtce  
ATCO 23-Jun-16 08:30 24-Jun-16 14:00 29.5 Hours
Continuous
732S 906 Partial PM on Bkr 906, 240kV ring will be open  
ALTALINK 25-Jun-16 08:00 26-Jun-16 17:00 1.38 Days
Continuous
42s North 138 kV Bus GOI Replace strain insulators over 42s60 (seperate outage), connect 42s32 to north bus  
ALTALINK 25-Jun-16 08:00 26-Jun-16 17:00 1.38 Days
Continuous
42s T2 GOI Replace strain insulators on North 138 kV Bus over 42s60.  
EPCOR 27-Jun-16 07:00 28-Jun-16 17:00 1.42 Days
Continuous
J2401 @ Jasper Doble  
EPCOR 27-Jun-16 07:00 30-Jun-16 17:00 3.42 Days
Continuous
D2401 @ Dome Breaker Maint  
ALTALINK 27-Jun-16 08:00 07-Jul-16 16:00 10.33 Days
Continuous
163s1552 & 163s1752 (1002L) GOI Replace 163s1552 breaker and current transformers  
ALTALINK 27-Jun-16 10:00 27-Jun-16 17:00 7 Hours
Continuous
916L,928L & 42s North 240 kV Bus GOI Open jumpers on North bus to facilitate insulator replacement. 916L will remain out of service until all insulators are replaced and North Bus jumpers are restored on July 15  
ATCO 27-Jun-16 10:00 28-Jun-16 15:00 29 Hours
Continuous
827S SVC,827S 703 Partial PM's on 703 and 401 Breakers, SVC offline during testing  
ALTALINK 27-Jun-16 10:30 27-Jun-16 17:00 6.5 Hours
Daily
89s952 - GOI Rebuilding trip dashpot  
ALTALINK 27-Jun-16 11:00 27-Jun-16 17:00 6 Hours
Daily
12s1652 - GOI Install new spring and 62 relay.  
ALTALINK 27-Jun-16 13:00 29-Jun-16 17:00 2.17 Days
Continuous
T1(TX18429) - GOI,320p91 138kV breaker maintenance  
ALTALINK 27-Jun-16 17:00 25-Jul-16 12:00 27.79 Days
Continuous
906L & 42s South 240 kV Bus GOI Replace strain insulators. Open jumpers on 240 kV South Bus to create Open Point 'D'  
ALTALINK 27-Jun-16 17:00 06-Aug-16 08:00 39.63 Days
Continuous
916L (42s - 5s) GOI Remains out of service due to jumpers opened on 42s North 240 kV Bus  
ALTALINK 28-Jun-16 08:00 30-Jun-16 16:00 2.33 Days
Continuous
933L/9L933 (132s - A801s) - GOI SCADA Upgrade Project  
ATCO 28-Jun-16 08:30 29-Jun-16 15:30 31 Hours
Continuous
786S 401,786S 703T,786S SVC 401 Partial PM & Testing, Repair 703T Leaking from top flange. / SVC Offline for the duration of the work.  
ALTALINK 29-Jun-16 09:00 29-Jun-16 14:30 5.5 Hours
Daily
38s7452 - GOI Rebuilding trip dashpot  
EPCOR 30-Jun-16 07:00 30-Jun-16 17:00 10 Hours
Continuous
PM2404 @ Poundmaker Repair aux contact  
EPCOR 04-Jul-16 07:00 08-Jul-16 17:00 4.42 Days
Continuous
C2406 @ Cloverbar Breaker Maint  
EPCOR 04-Jul-16 07:00 08-Jul-16 17:00 4.42 Days
Continuous
TX2 @ Castle Downs Doble  
ATCO 04-Jul-16 08:00 15-Jul-16 15:00 11.29 Days
Continuous
2029S 1200SST2,2029S 500kV Bus,2029S 502VR Check 500kV bus section for corona discharge, maintenance on 1200SST2, 502VR, SST has 3 other redundant sources, 500kV bus section OOS will add no added risk to station operation  
ALTALINK 04-Jul-16 11:00 09-Jul-16 17:00 5.25 Days
Continuous
59s T1 (TX18184) GOI Bushing replacement, TX maintenance  
ALTALINK 04-Jul-16 12:00 07-Jul-16 16:00 3.17 Days
Continuous
1057L (89s - E657s) - GOI RTU Replacement Project  
EPCOR 05-Jul-16 07:00 15-Jul-16 17:00 10.42 Days
Continuous
12TC2 & Bus 2 @ Genesee Protection Upgrade  
ALTALINK 05-Jul-16 08:00 07-Jul-16 16:00 2.33 Days
Continuous
934L/9L934 (132s - A801s) - GOI SCADA Upgrade Project  
ALTALINK 06-Jul-16 07:00 07-Jul-16 03:00 20 Hours
Continuous
250p 138 kV Bus & 718L GOI remove bypass, connect new 250p718 breaker, replace 250p30, remove 250p31.  
ALTALINK 06-Jul-16 08:00 06-Jul-16 17:00 9 Hours
Daily
263s718W - GOI 138kV breaker maintenance  
EPCOR 08-Jul-16 07:00 02-Aug-16 17:00 25.42 Days
Continuous
1056L Ellerslie -Argyl Tower Refurbishment  
ENMAX 09-Jul-16 01:00 09-Jul-16 05:00 4 Hours
Continuous
11.81L. 11.83. 11.1TR. 11.4TR. 138KV PT Repair SW 83 @ 11 sub, Substation Wash  
ATCO 11-Jul-16 07:00 11-Jul-16 14:00 7 Hours
Continuous
7L89 Connect 144 KV side of 835s Mobile Substation to 7L89
to take 702T @ 700s out of service, this is a Cold Lk thermal cutplane line
 
EPCOR 11-Jul-16 07:00 11-Jul-16 17:00 10 Hours
Continuous
1059L Lambton - East Industrial Doble  
EPCOR 11-Jul-16 07:00 11-Jul-16 17:00 10 Hours
Continuous
920L @ Caslte downs Repair Disconnect CDDS13  
EPCOR 11-Jul-16 07:00 15-Jul-16 17:00 4.42 Days
Continuous
J2407 @ Jasper Breaker Maint @ Doble  
EPCOR 11-Jul-16 07:00 15-Jul-16 17:00 4.42 Days
Continuous
920L @ Castle downs Ct Replacement  
ATCO 11-Jul-16 07:00 20-Jul-16 17:30 9.44 Days
Continuous
7L33,845S 144kV Bus 7L33 ARECL circuit deficiencies  
SUNCOR 11-Jul-16 08:00 15-Jul-16 20:00 4.5 Days
Continuous
29PL9-13 (29EDD-34 - 29EDD-65) maintenance from 29PS-216 to 29PS-201  
ATCO 11-Jul-16 09:00 15-Jul-16 17:00 4.33 Days
Continuous
863S 902T 863S - 902T Testing and Leak Repair

901T is in service and will carry the load for the duration of the outage
 
ALTALINK 11-Jul-16 10:30 14-Jul-16 17:00 3.27 Days
Continuous
310p252 - GOI 240kV Breaker mtce  
ALTALINK 11-Jul-16 11:00 13-Jul-16 14:00 2.13 Days
Continuous
74s2252 - GOI 240kV breaker maintenance  
ALTALINK 12-Jul-16 08:00 14-Jul-16 16:00 2.33 Days
Continuous
950L/9L950 (132s - A801s) - GOI SCADA Upgrade Project  
ALTALINK 12-Jul-16 08:00 14-Jul-16 16:00 2.33 Days
Continuous
1056L (89s - E629s) - GOI RTU Replacement Project  
ALTALINK 18-Jul-16 10:00 28-Jul-16 17:00 10.29 Days
Continuous
17s T2 (TX18477) - GOI Replace 138/240kV bushings on T2.  
ALTALINK 18-Jul-16 11:00 19-Jul-16 17:00 30 Hours
Continuous
59s952 - GOI 240kV breaker maintenance  
ALTALINK 18-Jul-16 12:00 21-Jul-16 16:00 3.17 Days
Continuous
946L (89s - 38s) - GOI RTU Replacement Project  
ENMAX 19-Jul-16 08:00 19-Jul-16 16:00 8 Hours
Continuous
1109L HV SW/MD Maintenance 25MD240-1109  
ALTALINK 20-Jul-16 08:00 21-Jul-16 17:00 1.38 Days
Continuous
59s852 - GOI 240kV breaker maintenance  
EPCOR 25-Jul-16 07:00 27-Jul-16 17:00 2.42 Days
Continuous
L2403 @ Lambton Doble  
ALTALINK 25-Jul-16 12:00 28-Jul-16 16:00 3.17 Days
Continuous
908L (89s - E52s - 38s) - GOI RTU Replacement Project  
ALTALINK 25-Jul-16 13:00 27-Jul-16 17:30 2.19 Days
Continuous
89s1752 - GOI Replacing accessory port to repair leak  
ALTALINK 25-Jul-16 13:00 06-Aug-16 08:00 11.79 Days
Continuous
928L & 42s North 240 kV Bus GOI Replace strain insulators. Close jumpers on 240 kV North Bus to close Open Point 'B' & 'C'  
ALTALINK 26-Jul-16 08:00 27-Jul-16 17:00 1.38 Days
Continuous
103s1252 - GOI 240kV breaker maintenance  
ATCO 27-Jul-16 09:00 27-Jul-16 16:00 7 Hours
Continuous
7L75,800S 701 Complete Partial PM on Breaker 701, 7L75 will already be OOS for permit 2-37786  
ALTALINK 28-Jul-16 09:00 28-Jul-16 14:00 5 Hours
Daily
89s352 - GOI Rebuilding trip dashpot  
ENMAX 30-Jul-16 08:00 31-Jul-16 16:00 1.33 Days
Continuous
21s. 50L. 21.2TR. 21CAP Install PT for Harmoninc Monitoring  
BCH 01-Aug-16 09:00 12-Aug-16 17:00 11.33 Days
Continuous
2L294 (Cranbrook - A.A. Lambert) insulator replacements and arcing horn installations AB-BC
ALTALINK 02-Aug-16 08:00 04-Aug-16 16:00 2.33 Days
Continuous
909L (89s - E665s) - GOI RTU Replacement Project  
ALTALINK 02-Aug-16 08:00 05-Aug-16 17:00 3.38 Days
Continuous
946L (89s-38s) GOI Telus Work on tower structures  
SUNCOR 02-Aug-16 08:00 04-Sep-16 20:00 33.5 Days
Continuous
29EDD-1 Millennium 260kV North Bus T2 & 260kV West Bus 1 Outage, 29EDD1s18 Replace Sw. Mechanism (ISO)  
SUNCOR 02-Aug-16 08:00 04-Sep-16 20:00 33.5 Days
Continuous
29EDD-1-T1 (29EDD-1 Millennium),29EDD-1-T2 (29EDD-1 Millennium),29EDD-1 Millennium 260kV West Bus 1 relay maintenance  
SUNCOR 02-Aug-16 08:00 04-Sep-16 20:00 33.5 Days
Continuous
29EDD1SPL9-3 260kV Line 29PL9-3
29EDD-1
 
ATCO 02-Aug-16 09:00 02-Aug-16 16:00 7 Hours
Continuous
9L20,755S 901,755S 906 755S - 901 BREAKER SF6 GL315 PARTIAL TESTING

Bkr 901 Maintenance / MOD 901A Hot Spot Repair

9L20 will have to be out of service to repair hot spot on 901A
 
ALTALINK 02-Aug-16 13:00 03-Aug-16 17:00 28 Hours
Continuous
275s1952 - GOI 240kV breaker maintenance  
EPCOR 03-Aug-16 07:00 03-Aug-16 17:00 10 Hours
Continuous
921L @ Cloverbar - Lamoureux Doble  
ATCO 03-Aug-16 07:00 26-Aug-16 17:30 23.44 Days
Continuous
847S 902PT,847S 902,847S 901 Replace optical CT's with 2 new conventional CT's. Add PT secondary fused disconnect 902PTX2. Upgrade protection.  
ALTALINK 03-Aug-16 07:30 03-Aug-16 17:00 9.5 Hours
Daily
71s921X (921L) Advice for EPCOR EPCOR work @ Cloverbar  
ATCO 03-Aug-16 09:00 03-Aug-16 16:00 7 Hours
Continuous
755S 902 755S - BREAKER 902 SF6 GL315 PARTIAL TESTING

755S ring bus will be open
 
ALTALINK 06-Aug-16 09:00 06-Aug-16 16:00 7 Hours
Daily
906L & 42s South 240 kV Bus GOI Close jumpers on 240 kV South Bus to close Open Point 'D'  
EPCOR 08-Aug-16 07:00 19-Aug-16 17:00 11.42 Days
Continuous
240BA2 @ Bellamy - Argyl Degassing  
ENMAX 08-Aug-16 08:00 15-Aug-16 16:00 7.33 Days
Continuous
21.80L Allteck: 21.80 OOS #1  Aug 8th – 15th for Cable pulling and training / racking  
ALTALINK 08-Aug-16 10:30 20-Aug-16 17:00 12.27 Days
Continuous
89s T2-A/T2-B/T2-C (TX18727/18728/18733) Doble 89s T2 A/B/C, Repair 240KV bushing leaks on T2 A/B/C, Repair additional leaks on T2 B & wash.  
ALTALINK 09-Aug-16 08:00 11-Aug-16 16:00 2.33 Days
Continuous
908L (89s - E816s) - GOI RTU Replacement Project  
ATCO 09-Aug-16 08:30 10-Aug-16 15:00 30.5 Hours
Continuous
834S 902T 834s Wesley Creek 902T o/s for maintenance and testing.  
ALTALINK 15-Aug-16 12:00 18-Aug-16 16:00 3.17 Days
Continuous
947L (89s - E987s) - GOI RTU Replacement Project  
ENMAX 16-Aug-16 08:00 23-Aug-16 16:00 7.33 Days
Continuous
28.80L Allteck: 28.80 OOS #1 Aug 16 – 23rd for Cable pulling and training / racking  
ATCO 19-Aug-16 07:00 29-Sep-16 17:30 41.44 Days
Continuous
850S 702T,791S 456PT,791S 701T,791S 400PT7,791S 453PT,791S 400 BUS T1,791S 400 BUS A,791S 402T,791S 450PT,791S 451PT,791S 410T,791S 403T Outage to 701T and bus T1 @ 791S, 702T @ 850S, Husky feeders 1 (402T), 3 (403T), 5 (410T),  
MONTANA 19-Aug-16 08:00 02-Sep-16 17:30 14.4 Days
Continuous
MATL (120s Picture Butte - Montana) annual maintenance AB-MATL
EPCOR 19-Aug-16 17:01 02-Sep-16 17:00 14 Days
Continuous
240BA3 @ Bellamy - Argyl Degassing  
ALTALINK 22-Aug-16 07:30 26-Aug-16 17:30 4.42 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) line maintenance AB-BC
ALTALINK 22-Aug-16 10:30 25-Aug-16 17:00 3.27 Days
Continuous
89s T1-A/T1-B/T1-C (TX18724/18725/18726) Doble 89s T1 A/B/C, Repair leaks & wash T1 B  
EPCOR 29-Aug-16 07:00 30-Aug-16 17:00 1.42 Days
Continuous
1205 BKR @ Genesee Breaekr Maint  
ALTALINK 29-Aug-16 07:30 02-Sep-16 17:30 4.42 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) line maintenance AB-BC
ALTALINK 29-Aug-16 08:00 09-Sep-16 17:00 11.38 Days
Continuous
9L960 (13s - 825s) GOI Protection replacement - A & B  
ATCO 30-Aug-16 07:00 19-Sep-16 17:30 20.44 Days
Continuous
847S 901,847S 901PT,847S 904 Remove cabling, install new and terminate MOD 9L66D2
Remove cabling, install new and terminate 901PT
ATCO install new 9L66/21B relay @ 849S Joslyn
Commission protection and control - Logic, Telecontrol, Telecom
 
ENMAX 30-Aug-16 08:00 05-Sep-16 16:00 6.33 Days
Continuous
65.1TR. 65s 138KV South Bus Installation of 54.81L receiving structure.  
EPCOR 31-Aug-16 07:00 01-Sep-16 17:00 1.42 Days
Continuous
1208 BKR @ Genesee Doble  
ENMAX 05-Sep-16 08:00 13-Sep-16 16:00 8.33 Days
Continuous
21.80. 20.82L. TAU CAP VOLT TR. 21.1TR. 21.4TR. 15.60L. 21.61L Replace SW 84, SW 85 & 21.4TR MD. 21.4TR (PRD, Transformer MTCE, Gas Relay, Doble), 138KV SW & MD MTCE. 69KV SW MTCE  
EPCOR 06-Sep-16 07:00 06-Sep-16 17:00 10 Hours
Continuous
920L CVT @ Castle Downs Doble  
EPCOR 06-Sep-16 07:00 30-Sep-16 17:00 24.42 Days
Continuous
TX3 @ Lambton Oil reclamation  
ENMAX 06-Sep-16 08:00 15-Sep-16 16:00 9.33 Days
Daily
28.80L Allteck: 28.80 OOS #2 Sept 6 – 13nd for pothead termination installation  
ALTALINK 06-Sep-16 08:00 20-Sep-16 17:00 14.38 Days
Continuous
929L (63s Red Deer - 74s Janet) install foindations for Hazelwood line in/out  
ALTALINK 06-Sep-16 08:00 20-Sep-16 17:00 14.38 Days
Continuous
925L (63s Red Deer - 74s Janet) install foindations for Hazelwood line in/out  
ENMAX 06-Sep-16 08:00 07-Nov-16 16:00 62.38 Days
Continuous
65s 138KV South Bus. 65B138-D84 Install 65MD138-54.81, SW 89, 65B138-D83.  
BCH 12-Sep-16 09:00 23-Sep-16 17:00 11.33 Days
Continuous
5L91 (Selkirk - Ashton Creek) wiring changes to FLAR, insulator changes/marker bals and ACK station work - BC maintenance does not affect AB ATC AB-BC
ALTALINK 12-Sep-16 13:00 14-Sep-16 12:00 1.96 Days
Continuous
266s FSC2 - GOI FSC2 maintenance  
ALTALINK 13-Sep-16 08:00 15-Sep-16 17:00 2.38 Days
Continuous
899L (166s - 218s) GOI move TPR channel to MPLS system and perform trip tests  
ATCO 13-Sep-16 08:00 16-Sep-16 15:00 3.29 Days
Continuous
834S 902T tapchanger vibro-acoustic measurements  
ALTALINK 13-Sep-16 08:00 20-Sep-16 17:00 7.38 Days
Continuous
T3,857L,ALC_02L,409s 138kV Bus B2 (T1 Replace T1 bushings & LA's, replace 409s6, 409s8 & 409s10 switches, replace 409s12 PTs  
ALTALINK 14-Sep-16 12:00 15-Sep-16 17:00 29 Hours
Continuous
266s FSC1 - GOI FSC1 maintenance  
ENMAX 16-Sep-16 08:00 24-Sep-16 16:00 8.33 Days
Daily
21.80L Allteck: 21.80 OOS #2 Sept 16 – 22nd for pothead termination installation  
ENMAX 18-Sep-16 00:00 18-Sep-16 05:00 5 Hours
Continuous
11.81L. 11.83L. 11.1TR. 11.4TR. 138KV PT Fall Substation Washing  
ALTALINK 18-Sep-16 00:01 18-Sep-16 05:00 4.98 Hours
Daily
11.81L/11.83L - Enmax Info ENMAX maintenance (Fall Substation Washing)  
ALTALINK 19-Sep-16 08:00 30-Sep-16 17:00 11.38 Days
Continuous
9L961 (13s - 825s) GOI Protection replacement - A & B  
ALTALINK 19-Sep-16 11:00 29-Sep-16 17:00 10.25 Days
Continuous
74s T1 (TX18570) - GOI Transformer maintenance, doble, repair oil leaks and repair buck/boost dials.  
ATCO 20-Sep-16 07:00 30-Sep-16 17:30 10.44 Days
Continuous
847S 902T,919S 907,919S 900 BUS 2,847S 904,847S 903 Disconnect and remove 904 optical CT's
Install new 904CT
Remove cabling, install new and terminate Bkr 904
Remove cabling, install new and terminate 904PT
Complete cable install and terminate 904CT poles
Reconnect bus
Commission protection and control - Logic, Telecontrol, Telecom
 
ENMAX 20-Sep-16 20:00 20-Sep-16 23:59 3.98 Hours
Continuous
7.84L. 36.81L. 36.1TR. 36.3TR. 36PT138-Z31. 7PT138-7.84 Fall Substation Washing  
ENMAX 22-Sep-16 08:00 22-Sep-16 12:00 4 Hours
Continuous
28.80L. 28.2TR Fall Substation Washing  
ALTALINK 23-Sep-16 08:00 29-Sep-16 17:00 6.38 Days
Daily
856L,ALC_01L) Ad,409s 138kV Bus B1 (T2 Replace T2 LA's & bushings, replace 409s4, 409s5, 409s9 switches, replace 409s11 PTs  
BCH 26-Sep-16 09:00 27-Sep-16 17:00 1.33 Days
Continuous
2L294 (Nelway - A.A. Lambert) insulator replacements and arcing horn installations AB-BC
ENMAX 28-Sep-16 12:00 28-Sep-16 16:00 4 Hours
Continuous
23.80L. 23.4TR Fall Substation Washing  
ENMAX 01-Oct-16 08:00 01-Oct-16 12:00 4 Hours
Continuous
39s 138KV Bus. 38.83L. 39.82L. 39.1TR. 39.3TR. 138KV PT Fall Substation Washing  
ENMAX 01-Oct-16 12:00 01-Oct-16 16:00 4 Hours
Continuous
39s 138KV Bus. 22.81L. 39.82L. 39.2TR. 39.4TR Fall Substation Washing  
ENMAX 01-Oct-16 16:00 01-Oct-16 18:00 2 Hours
Continuous
162s 138KV Bus. 39.82L. Fall Substation Washing  
EPCOR 03-Oct-16 07:00 07-Oct-16 17:00 4.42 Days
Continuous
TX1 @ Bellamy DGA monitor install  
ALTALINK 03-Oct-16 08:00 07-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI *TENTATIVE* Component replacement  
ALTALINK 03-Oct-16 08:00 07-Oct-16 17:00 4.38 Days
Continuous
39s T2,138kV and 240kV Bus 2 - GOI Upgrading bus protections  
ALTALINK 03-Oct-16 09:00 07-Oct-16 17:00 4.33 Days
Continuous
887L (48s Pocaterra - BCH Britt Creek),48s38,48s37 (887L) BCH Advice BC Hydro work AB-BC
ALTALINK 03-Oct-16 13:00 07-Oct-16 17:00 4.17 Days
Continuous
77s T1 TX18372 - GOI Replace T1 Bushings  
ATCO 04-Oct-16 07:00 18-Oct-16 17:30 14.44 Days
Continuous
847S 901T,919S 900 BUS 1,919S 905,847S 903,847S 902 Disconnect and remove 903 optical CT's
Install new 903CT
Remove cabling, install new and terminate Bkr 903
Remove cabling, install new and terminate 903PT
Complete cable install and terminate 903CT poles
Reconnect bus
Commission protection and control - Logic, Telecontrol, Telecom
 
ENMAX 07-Oct-16 08:00 07-Oct-16 16:00 8 Hours
Continuous
50L. 21.2TR. 138KV PT @ Bearspaw. 21 CAP Fall Substation Washing  
ALTALINK 10-Oct-16 08:00 17-Oct-16 17:00 7.38 Days
Continuous
910L (89s-288s) GOI *TENTATIVE* Component replacement  
ENMAX 12-Oct-16 08:00 12-Oct-16 16:00 8 Hours
Continuous
25B240-D140 (ENMAX 25),25B240-D141 (ENMAX 25) MD maintenance  
ENMAX 15-Oct-16 07:00 15-Oct-16 10:00 3 Hours
Continuous
162s 240KV Bus. 918L Fall Substation Washing  
ENMAX 15-Oct-16 08:00 15-Oct-16 14:00 6 Hours
Continuous
162s 138KV & 240KV Bus. 162.1TR Fall Substation Washing  
ENMAX 15-Oct-16 14:00 15-Oct-16 16:00 2 Hours
Continuous
162s 138KV Bus. 162.4TR Fall Substation Washing  
ENMAX 16-Oct-16 07:00 16-Oct-16 10:00 3 Hours
Continuous
162s 240KV Bus. 932L Fall Substation Washing  
ENMAX 16-Oct-16 08:00 16-Oct-16 12:00 4 Hours
Continuous
162s 138KV & 240KV Bus. 162.2TR Fall Substation Washing  
ENMAX 16-Oct-16 12:00 16-Oct-16 14:00 2 Hours
Continuous
162s 138KV Bus. 11.83L Fall Substation Washing  
ENMAX 16-Oct-16 14:00 16-Oct-16 16:00 2 Hours
Continuous
162s 138KV Bus. 162.81L Fall Substation Washing  
EPCOR 17-Oct-16 06:00 21-Oct-16 17:00 4.46 Days
Continuous
TX3 @ Jasper ETM install  
ATCO 17-Oct-16 07:30 21-Oct-16 18:00 4.44 Days
Continuous
840S McNeill Station McNeill 2016 Fall turn around. Site shut down for maint. work. AB-SK
ALTALINK 17-Oct-16 08:00 21-Oct-16 17:00 4.38 Days
Continuous
39s T1,138kV and 240kV Bus 1 - GOI Upgrading bus protections  
ALTALINK 17-Oct-16 08:00 21-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI *TENTATIVE* (2) Component replacement  
ENMAX 17-Oct-16 08:00 28-Oct-16 16:00 11.33 Days
Continuous
24.81L. 24.83L. 24B138-24BT3. 24.1TR. 24PT138-Z31. 24s 138KV Bus Differential. 24s Auto Switching Remove temp jumpers across 24BT3and reinstall breaker. Protection settings changes.  
ALTALINK 22-Oct-16 08:00 23-Oct-16 17:00 1.38 Days
Continuous
910L (89s-288s) GOI *TENTATIVE* Component replacement  
ENMAX 24-Oct-16 08:00 18-Nov-16 16:00 25.38 Days
Continuous
7.82L Reloacted a section of 7.82 L around the new planned intersection at 69Str SW and the SWCRR(HW8).  
ALTALINK 28-Oct-16 07:00 10-Nov-16 18:00 13.5 Days
Continuous
916L (42s-5s) GOI SWCRR: Foundation work  
ALTALINK 28-Oct-16 07:00 10-Nov-16 18:00 13.5 Days
Continuous
693L (42s-C10s) GOI SWCRR: Foundation work  
ATCO 31-Oct-16 07:00 11-Nov-16 17:30 11.48 Days
Continuous
7L20 Build temporary bypass and cut openers into 7L20  
ENMAX 21-Nov-16 08:00 02-Dec-16 16:00 11.33 Days
Continuous
28.80L. 28s & Sarcee 138KV Bus Differential Protection Line Protection Upgrade  
ALTALINK 15-Feb-17 07:00 16-Mar-17 17:00 29.38 Days
Continuous
RATD 929L(74s-63s) GOI Cut in 929L in and out from 287s (287s-63s)  
ALTALINK 15-Feb-17 08:00 16-Mar-17 17:00 29.33 Days
Continuous
RATD 925(74s-63s) GOI install foundations for Hazelwood line in/out  
ALTALINK 06-Mar-17 07:00 26-Mar-17 18:00 20.42 Days
Continuous
906L (17s-42s) GOI. SWCRR: Line relocate: Set structures and string.  
ALTALINK 06-Mar-17 07:00 26-Mar-17 18:00 20.42 Days
Continuous
928L (17s-42s) GOI. SWCRR: Line relocate: Set structures and string.  
ALTALINK 13-Apr-17 08:00 27-Apr-17 17:00 14.38 Days
Continuous
38s T4 (Tx18247) GOI Replace T4  
ATCO 24-Apr-17 06:30 28-Apr-17 18:00 4.48 Days
Continuous
840S McNeill Station McNeill 2017 spring turn around. Site shut down for maint. work. AB-SK
ALTALINK 28-Aug-17 07:00 01-Oct-17 17:00 34.42 Days
Continuous
693L (42s-C10s) GOI SWCRR: Line construction  
ALTALINK 28-Aug-17 07:00 01-Oct-17 17:00 34.42 Days
Continuous
916L (42s-5s) GOI SWCRR: Line construction  
ATCO 11-Sep-17 06:30 15-Sep-17 18:00 4.48 Days
Continuous
840S McNeill Station McNeill 2017 Fall turn around. Site shut down for maint. work. AB-SK
ATCO 09-Feb-18 07:00 11-Feb-18 17:30 2.44 Days
Continuous
9L07 String new portion 9L01/9L30 over 9L07 for new 951S Thickwood Hills substation.  
ATCO 15-Feb-18 07:00 24-Feb-18 17:30 9.44 Days
Daily
9L01 9L01 Cut in for in and out addition of 951S Thickwood Hills substation. Install new structures.  
ATCO 18-Sep-18 07:00 20-Sep-18 17:30 2.44 Days
Continuous
9L01 9L01 Cut in for in and out addition of 951S Thickwood Hills substation. Remove bypass at substation.  
ATCO 25-Sep-18 07:00 27-Sep-18 17:30 2.44 Days
Continuous
9L07 Cut in 951S Thickwood Hills substation.  

AB-BC, AB-SK & AB-MATL: refer to AESO web posting: http://itc.aeso.ca/itc/public/reportIndex.do
Also,
AB-BC, AB-SK & AB-MATL: refer to ISO Rule 203.6: http://www.aeso.ca/rulesprocedures/18592.html

Prepared On: 2016-05-27   4:49:06 PM


This document and the information contained herein are based upon information and data which by their nature contain a degree of uncertainty and are subject to change. In addition, this document may contain information and data from public sources and/or third parties, which have been assumed to be accurate and complete and have not been verified. Accordingly, the Independent System Operator, operating as the Alberta Electric System Operator (the "AESO") makes no warranty, representation or guarantee, express or implied, with respect to this document or the information contained herein, including, but not limited to, any warranty, representation or guarantee of accuracy, completeness, timeliness, reliability, availability, absence of computer virus, non- infringement, merchantability or suitability for any purpose. Under no circumstances will the AESO, its members, officers, employees, contractors or agents, or any of their respective affiliates, be liable for any errors or omissions in, or any losses, damages or claims whatsoever, whether in contract, tort or otherwise, arising from use of or reliance upon, this document or any information contained herein.

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