Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2016-08-06

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 31-Dec-16 17:00 1,284.42 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 11-Sep-16 17:00 133.71 Days
Continuous
1083L (63s Red Deer - 288s Wolf Creek),755L (63s Red Deer - 247s Piper Creek) rebuild 1083L,rebuild 755L  
CNRL 07-Jul-16 08:00 07-Aug-16 15:00 31.29 Days
Continuous
842s 75-TR-4701 (842s Horizon Upgrading) maintenance  
CNRL 07-Jul-16 08:00 07-Aug-16 15:00 31.29 Days
Continuous
75-TR-5701 (842s Horizon Upgrading) maintenance  
CNRL 07-Jul-16 08:00 07-Aug-16 15:00 31.29 Days
Continuous
75-TR-7701 (842s Horizon Upgrading) maintenance  
CNRL 07-Jul-16 08:00 07-Aug-16 15:00 31.29 Days
Continuous
75-TR-8701 (842s Horizon Upgrading) maintenance  
ENMAX, ALTALINK 20-Jul-16 09:00 24-Aug-16 17:00 35.33 Days
Continuous
1003L (74s Janet - ENMAX 25),ENMAX 25 240kV West Bus L to J: 1003L cable fault - replacement  
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
SHELL 02-Aug-16 07:00 26-Aug-16 17:30 24.44 Days
Continuous
847s 901 (847s Muskeg River),847s 902 (847s Muskeg River) replace optical CT's with 2 new conventional CT's  
EPCOR 04-Aug-16 07:00 31-Aug-16 17:00 27.42 Days
Continuous
557s T2 (557s Castle Downs) oil reclamation  
ATCO 06-Aug-16 07:00 07-Aug-16 17:00 1.42 Days
Continuous
957S 903 Commission Kearl RAS trip logic. L9900 will be fed from 903 only, 240kV ring at 957s will be open  
ALTALINK 06-Aug-16 08:00 06-Aug-16 17:00 9 Hours
Daily
994L (312s - 103s) - GOI Emergency Damper Replacements  
ENMAX 08-Aug-16 01:00 08-Aug-16 05:00 4 Hours
Continuous
11.81L. 11.83. 11.1TR. 11.4TR. 138KV PT Repair SW 83 @ 11 sub, Substation Wash  
EPCOR 08-Aug-16 07:00 18-Aug-16 17:00 10.42 Days
Continuous
909L-W @ Dome S/S Relay Testing and Teleprotection cutover for line relocation to Keephills  
ALTALINK 08-Aug-16 08:00 13-Aug-16 18:00 5.42 Days
Continuous
1038L (237s - 266s - 138s) - GOI Emergency Damper Replacements  
ALTALINK 08-Aug-16 08:00 15-Aug-16 16:00 7.33 Days
Continuous
909L (310p - OP) GOI Prepare and connect TPR, settings change as required, close Open Point 'A' at 310p. Redundant protections will be taken out of service one at a time.  
ALTALINK 08-Aug-16 09:00 09-Aug-16 17:00 1.33 Days
Continuous
320p T1,909L and 240kV "B" Bus - GOI Switch maintenance on 320p213, 320p3B, 320p7B, 320p9B, 320p90; Disconnect 909L TPR from 320p  
ATCO 08-Aug-16 11:00 11-Aug-16 15:00 3.17 Days
Continuous
813S SVC Annual main, change leaking pump, check thyrister fail
SVC not available
 
ALTALINK 08-Aug-16 12:00 10-Aug-16 17:00 2.21 Days
Continuous
510s ACF 12 - GOI Replacing failed capacitor cans in the filter bank; redundant filter bank will be in service  
ALTALINK 08-Aug-16 13:00 18-Aug-16 17:00 10.17 Days
Continuous
68s T2 (TX18405) - GOI Replace tap selector switch.  
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 09:30 10-Aug-16 14:00 28.5 Hours
Continuous
732S 902 Partial on Breaker 902, 240kV ring will remain open  
ALTALINK 09-Aug-16 17:00 15-Aug-16 08:00 5.63 Days
Continuous
320p1352 (909L) - GOI Switch maintenance 320p212, disconnect 909L slack span and add new jumpers to VT13,AES to complete disconnection of 909L protections  
ATCO 10-Aug-16 14:00 10-Aug-16 14:05 5 Mins
Continuous
Bindloss_S-Telecom TPR EE 057 / 7L760 7LA760 DTT CHC is a one channel protection link from Oyen to Bindloss sub, part of the 144 kv keystone T tap. We need to move this communications link over to the new MPLS network. it will involve an outage of about 2 minutes while the cables are moved over at each end.  
ALTALINK 11-Aug-16 08:00 12-Aug-16 17:00 1.38 Days
Continuous
510s ACF 22 - GOI Replacing failed capacitor cans in the filter bank; redundant filter bank will be in service  
ATCO 13-Aug-16 07:00 14-Aug-16 19:00 1.5 Days
Daily
7L749 Install poles for Line mitigation, these structures cannot be done with a HOP  
ALTALINK 15-Aug-16 08:00 15-Aug-16 17:00 9 Hours
Continuous
909L (310p - 320p - 665s) GOI Complete line configuration, AES to complete end to end functional testing with EPCOR Redundant protections will be taken out of service one at a time..  
ALTALINK 15-Aug-16 08:00 19-Aug-16 18:00 4.42 Days
Continuous
1037L (237s - 266s - 138s) - GOI Install Bird Diverters, Replace Spacer Dampers  
SUNCOR 15-Aug-16 08:00 19-Aug-16 20:00 4.5 Days
Continuous
29PL9-13 (29EDD-34 - 29EDD-65) maintenance from 29PS-216 to 29PS-201  
ALTALINK 15-Aug-16 08:00 20-Aug-16 17:00 5.38 Days
Continuous
1053L (132s - 324s) - GOI Emergency Damper Replacements  
ALTALINK 15-Aug-16 10:00 25-Aug-16 15:00 10.21 Days
Continuous
163s1552 & 163s1752 (1002L) GOI Replace 163s1552 breaker and current transformers  
ALTALINK 15-Aug-16 11:00 25-Aug-16 17:00 10.25 Days
Continuous
172L/463L (370s - 463L28) - GOI Cut-in to new CoL Chinook (L181s) substation  
ALTALINK 15-Aug-16 12:00 18-Aug-16 16:00 3.17 Days
Continuous
947L (89s - E987s) - GOI RTU Replacement Project  
ALTALINK 15-Aug-16 13:00 15-Aug-16 15:00 2 Hours
Daily
17s16 (C1) - GOI De-energize for weed spraying.  
ALTALINK 15-Aug-16 13:00 18-Aug-16 17:00 3.17 Days
Continuous
74s2152 - GOI 240kV breaker maintenance  
ALTALINK 15-Aug-16 13:00 18-Aug-16 17:00 3.17 Days
Continuous
310p652 - GOI 240kV Breaker mtce  
ALTALINK 15-Aug-16 13:00 18-Aug-16 17:00 3.17 Days
Continuous
38s7252 - GOI 240kV Breaker mtce  
ALTALINK 15-Aug-16 17:00 18-Aug-16 16:00 2.96 Days
Continuous
909L (310p - 665s) GOI Switch maintenance 320p212, disconnect 909L slack span and add new jumpers to VT13, AES to complete disconnection of 909L protections, end to end TPR checks with EPCOR, setting changes on old 909L protections at 320p (if time allows)..  
ALTALINK 17-Aug-16 08:00 18-Aug-16 17:00 1.38 Days
Continuous
370s1152 - GOI 240kV breaker maintenance  
ALTALINK 17-Aug-16 10:00 19-Aug-16 08:00 1.92 Days
Continuous
809L (320p - 510s) GOI Remove portion of old 909L from over line.  
ALTALINK 18-Aug-16 16:00 22-Aug-16 08:00 3.67 Days
Continuous
1043L (320p - OJ @ Str 13) Line work (if required), otherwise - just holding line isolation for future connection  
ALTALINK 18-Aug-16 16:00 30-Sep-16 17:00 43.04 Days
Continuous
320p1352 GOI Setting changes on old 909L protections at 320p. Redundant protections will be removed from service one at a time.  
ALTALINK 19-Aug-16 07:00 10-Oct-16 17:30 52.44 Days
Continuous
688L (199s - 688DL23) - GOI Line rebuild  
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 19-Aug-16 17:01 02-Sep-16 17:00 14 Days
Continuous
1055L (E629s-E816s) EPCOR Outage - Info EPCOR degassing @ Bellamy  
ALTALINK 20-Aug-16 08:00 20-Aug-16 17:00 9 Hours
Daily
1071L (312s - 205s) - GOI Emergency Damper Replacements  
ALTALINK 20-Aug-16 08:00 21-Aug-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 20-Aug-16 08:00 21-Aug-16 17:00 1.38 Days
Continuous
42s T2 GOI Replace strain insulators on North 138 kV Bus over 42s60.  
ALTALINK 22-Aug-16 08:00 23-Aug-16 17:00 1.38 Days
Continuous
9028R Protection - TPR Upgrade to bandwidth between 9028R and 9466R/9456R, 1075L 'A' and 1155L 'B' will be rerouted during the upgrade.  
ALTALINK 22-Aug-16 08:00 23-Aug-16 17:00 1.38 Days
Continuous
132s Protection - TPR Upgrade to bandwidth between 132s and 9456R, all circuits will be rerouted during the upgrade.  
SUNCOR 22-Aug-16 08:00 25-Aug-16 20:00 3.5 Days
Continuous
29PL9-12 (29EDD-34 - 29EDD-65) 5 YR maintenance - from 29PS220 to 29PS-63 SLD - SL30-P-141-106 & SL30-P141-109  
ALTALINK 22-Aug-16 08:00 26-Aug-16 17:00 4.38 Days
Continuous
1065L (102s - 74s) - GOI Emergency Damper Replacements  
ALTALINK 22-Aug-16 08:00 01-Sep-16 17:00 10.38 Days
Continuous
320p352 GOI,1043L(320p-Str13) & 320p252 Pre-commissioning of new 1043L protections - protections will be taken out of service one at a time  
ATCO 22-Aug-16 09:00 26-Aug-16 16:00 4.29 Days
Continuous
801S 901T 901T Major Maintenance required  
ALTALINK 22-Aug-16 10:00 22-Aug-16 17:00 7 Hours
Daily
511s ACF12 - GOI Replace failed contacts  
ALTALINK 22-Aug-16 10:00 02-Sep-16 17:00 11.29 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) Line Maintenance AB-BC
ALTALINK 22-Aug-16 12:30 22-Aug-16 17:00 4.5 Hours
Daily
71s1352 - GOI 240kV Breaker mtce  
ALTALINK 22-Aug-16 13:00 23-Aug-16 17:00 28 Hours
Daily
356s652 - GOI 240kV breaker maintenance  
ALTALINK 22-Aug-16 15:00 25-Aug-16 17:00 3.08 Days
Continuous
650s T3 & SVC - GOI SVC mtce  
ALTALINK 23-Aug-16 08:00 24-Aug-16 17:00 1.38 Days
Continuous
1061L (12s - 681s) - GOI Emergency Damper Replacements  
ALTALINK 23-Aug-16 08:30 23-Aug-16 17:00 8.5 Hours
Daily
63s3N - GOI Adjust 240kV switch  
ALTALINK 23-Aug-16 09:00 23-Aug-16 15:00 6 Hours
Daily
433L (793s - 291s) - TPR Migration of TPR circuits to new radio at 793s and 9286R, affects 433L TPR.  
ALTALINK 23-Aug-16 09:00 23-Aug-16 15:00 6 Hours
Daily
859L (793s - 20s) - Advice Migration of TPR circuits to new radio at 793s and 9286R, affects 859L TPR.  
ATCO 23-Aug-16 09:00 23-Aug-16 16:00 7 Hours
Continuous
7L75,800S 701 Complete Partial PM on Breaker 701, 7L75 will already be OOS for permit 2-37935  
ALTALINK 23-Aug-16 11:00 24-Aug-16 17:00 30 Hours
Continuous
310p2352 - GOI 240kV Breaker mtce  
ALTALINK 24-Aug-16 08:00 24-Aug-16 17:00 9 Hours
Daily
244s252 - GOI Investigate A phase issue  
ATCO 24-Aug-16 10:00 24-Aug-16 14:00 4 Hours
Continuous
939S 903 Change Faulty Densimeter, 903 Bkr @ 939S Livock

 
ALTALINK 25-Aug-16 09:00 25-Aug-16 17:00 8 Hours
Daily
13s1054 (1054L) - GOI Repairing hotspot  
ATCO 25-Aug-16 12:00 26-Aug-16 16:00 28 Hours
Continuous
847S 201-PTL260-2D1,847S 201-PTL260-2GS1 To test logic to 201-PTL260-2D1 and test statuses for 201-PTL260-2GS1. This T&O will be opened right after the GOI for this outage is released since 201-PTL260-2D1 is an isolation point for the GOI.  
ATCO 26-Aug-16 07:00 19-Sep-16 17:30 24.44 Days
Continuous
847S 901PT,847S 904,847S 901 OUTAGE # 2 - Protection upgrades (904 / 9L66D2 / 901PT wiring changes, 904BF and 21B/9L66 relay replacements), 9L66 fed via temporary bypass  
ALTALINK 26-Aug-16 08:00 26-Aug-16 17:00 9 Hours
Daily
942L (71s - 681s) - GOI Emergency Damper Replacements  
ATCO 27-Aug-16 07:00 31-Aug-16 17:00 4.42 Days
Continuous
7L81 (FNG Fort Nelson - 791s Rainbow Lake) RAS installation at 791s  
ALTALINK, EPCOR 29-Aug-16 07:00 29-Aug-16 17:00 10 Hours
Continuous
920L (37s North Calder - 557s Castle Downs) repair disconnect CDDS13  
EPCOR 29-Aug-16 07:00 30-Aug-16 17:00 1.42 Days
Continuous
1205 BKR @ Genesee Breaekr Maint  
ATCO 29-Aug-16 07:00 02-Sep-16 17:30 4.44 Days
Continuous
7L66 Protection upgrade  
ALTALINK 29-Aug-16 08:00 29-Aug-16 17:00 9 Hours
Daily
966L/9L966 (650s - A932s) - GOI Emergency Damper Replacements  
ALTALINK 29-Aug-16 08:00 01-Sep-16 18:00 3.42 Days
Continuous
510s AC Filter Bank #2(ACF21 and ACF22) Replacing spacers to reduce corona  
ALTALINK 29-Aug-16 08:00 02-Sep-16 17:00 4.38 Days
Continuous
1064L (102s - 74s) - GOI Emergency Damper Replacements  
SUNCOR 29-Aug-16 08:00 03-Sep-16 20:00 5.5 Days
Continuous
29EDD-1-T1 (29EDD-1 Millennium),29EDD-1-T2 (29EDD-1 Millennium),29EDD-1 Millennium 260kV West Bus 1 relay maintenance  
ALTALINK 29-Aug-16 08:00 09-Sep-16 17:00 11.38 Days
Continuous
9L960 (13s - 825s) GOI Protection replacement - A & B  
SUNCOR 29-Aug-16 08:00 30-Sep-16 20:00 32.5 Days
Continuous
29EDD1SPL9-3 260kV Line 29PL9-3
29EDD-1
 
ATCO 29-Aug-16 09:00 02-Sep-16 16:00 4.29 Days
Continuous
715S 7L66 Protection Relay Replacing 67N electronic relay with new Siemens Microprocessor based relay (21A)  
ALTALINK 29-Aug-16 11:00 01-Sep-16 17:00 3.25 Days
Continuous
74s352 - GOI 240kV breaker maintenance  
ALTALINK 29-Aug-16 13:00 01-Sep-16 17:00 3.17 Days
Continuous
89s1452 - GOI 240kV Breaker mtce  
ALTALINK 30-Aug-16 08:00 30-Aug-16 14:00 6 Hours
Daily
893L (I_112s - 312s) - Advice Customer request to have 893L out to perform yearly maintenance at I_112s.  
ATCO 30-Aug-16 08:00 30-Aug-16 16:00 8 Hours
Continuous
755S 9L79 CHANNEL A TP FAIL,755S 9L79 CHANNEL B TP FAIL,Battle River 1757,Cordel_S-Telecom,755S 9L80 CHANNEL A TP FAIL,755S 9L80 CHANNEL B TP FAIL Software Upgrade to the Battle River to Cordel Eclipse radio link firmware. Due to Issues with radio causing random traffic Outages to Traffic.
Affected Teleprotection Circuits;
9L79 A and B
9L80 A and B
Affected SCADA Traffic;
Battle River Sub
Battle River Stn B
Battle River Stn C

Affected Devices
All Battle River Sub IP Devices

Upgrade should take no longer then 10 minutes unless conditions change. There will be at each end of the link to completed the upgrade and limit the outage time.
 
ALTALINK 30-Aug-16 12:00 30-Aug-16 17:00 5 Hours
Daily
356s752 - GOI Re-position site glass on centre phase  
EPCOR 31-Aug-16 07:00 01-Sep-16 17:00 1.42 Days
Continuous
1208 BKR @ Genesee Doble  
ATCO 05-Sep-16 07:00 16-Sep-16 17:00 11.42 Days
Continuous
850S 702T,791S 402T,791S 705,791S 401T,850S 701T,850S 701PT Rainbow Husky Load move Projec,Rainbow Husky Load move Project  
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  
SUNCOR 05-Sep-16 08:00 30-Sep-16 20:00 25.5 Days
Continuous
29EDD-1 Millennium 260kV North Bus T2 & 260kV West Bus 1 Outage, 29EDD1s18 Replace Sw. Mechanism (ISO)  
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 06-Sep-16 17:00 10 Hours
Continuous
DDS13 @ Dome Install new Coupling  
EPCOR 06-Sep-16 07:00 10-Sep-16 17:00 4.42 Days
Continuous
L721 @ Lambton Breaker Maint  
EPCOR 06-Sep-16 07:00 30-Sep-16 17:00 24.42 Days
Continuous
TX1 @ Jasper Bushing Replacement  
ALTALINK 06-Sep-16 07:30 06-Sep-16 17:00 9.5 Hours
Daily
89s909W (909L) Advice to EPCOR EPCOR Install new Coupling @ 665s DDS13  
Lethbridge 06-Sep-16 08:00 06-Sep-16 17:00 9 Hours
Continuous
172L (370s North Lethbridge - 181s Chinook),463L (15s Fort Macleod - 181s Chinook) energize 181sT1  
ALTALINK 06-Sep-16 08:00 06-Sep-16 17:00 9 Hours
Daily
L181s172L/L181s463L - CoL open end outag CoL commissioning Chinook TX / 13.8kV load(s)  
ALTALINK 06-Sep-16 08:00 07-Sep-16 17:00 1.38 Days
Daily
853L (28s-435s-504s) - TPR Re-routing telecom traffic affecting 853L TPR. This work will be performed remotely. All RAS circuits associated with this telecom path have been disabled.  
ALTALINK 06-Sep-16 08:00 07-Sep-16 18:00 1.42 Days
Continuous
1003L (74s - C25s) - GOI Emergency Damper Replacements  
ALTALINK 06-Sep-16 08:00 16-Sep-16 18:00 10.42 Days
Continuous
1037L (237s - 266s - 138s) - GOI Install Bird Diverters, Replace Spacer Dampers  
ENMAX 06-Sep-16 08:00 11-Oct-16 16:00 35.33 Days
Continuous
28.80L (SWCRR)-Allteck 28.80 OOS #1 Aug 16 – 23rd for Cable pulling and training / racking  
ALTALINK 07-Sep-16 08:00 07-Sep-16 12:00 4 Hours
Daily
9532R to 650s Radio hop - TPR Moving ccts from the old to the new radio - 7L224 both TPR Channels A & B will be out of service at the same time - 948L both TPR Channels A & B will be out of service at the same time - 953L "A" differential protection will be blocked @ 574s & A755s - 1047L "A" differential protection will be blocked @ 574s & 650s  
ALTALINK 07-Sep-16 08:30 08-Sep-16 17:00 1.35 Days
Continuous
37s83 (920L) - GOI Repairing switch  
ATCO 07-Sep-16 12:00 07-Sep-16 14:00 2 Hours
Continuous
948S 7L159 CHANNEL B TP,948S 7L159 CHANNEL A TP,Three Hills_S_Telecom,770S Station General Equipment,770S Substation RTU A n outage is required to inspect the microwave antenna and replace the radio transmission line on the MDR radio link to Elnora tower

Loss of 7L159 teleprotection A and B channel between 770S Three Hills, 948S Heatburg, and Ghostpine Windfarm (3 terminal protection configuration)
loss of Three Hills Scada
Loss of Three Hills IP operational network
 
ALTALINK 08-Sep-16 08:00 09-Sep-16 18:00 1.42 Days
Continuous
985L (74s - C25s) - GOI Emergency Damper Replacements  
ALTALINK 08-Sep-16 09:00 08-Sep-16 12:00 3 Hours
Daily
122s907N(907L) - GOI Topping up breaker with gas  
ALTALINK 08-Sep-16 10:00 08-Sep-16 14:00 4 Hours
Continuous
122S Alberta Newsprint maintenance  
ALTALINK 08-Sep-16 10:00 28-Oct-16 17:00 50.29 Days
Continuous
777L (245s - 48s) - GOI Line maintenance AB-BC
EPCOR 09-Sep-16 22:00 11-Sep-16 18:00 1.83 Days
Continuous
Bus3&4 @ Cloverbar Multiple projects  
ATCO 10-Sep-16 07:00 11-Sep-16 19:00 1.5 Days
Daily
7L749 Install poles for Line mitigation, these structures cannot be done with a HOP  
EPCOR 12-Sep-16 07:00 30-Sep-16 17:00 18.42 Days
Continuous
TX3 @ Lambton Oil reclamation  
ALTALINK 12-Sep-16 08:00 20-Sep-16 17:00 8.38 Days
Continuous
RATD 929(74s-63s) GOI install foindations for Hazelwood line in/out  
ALTALINK 12-Sep-16 08:00 20-Sep-16 17:00 8.38 Days
Continuous
RATD 925(74s-63s) GOI install foindations for Hazelwood line in/out  
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 10:30 12-Sep-16 15:30 5 Hours
Daily
102s SVC (102s Langdon) Weed spraying in SVC fenced area AB-BC
ALTALINK 12-Sep-16 12:00 13-Sep-16 17:00 29 Hours
Continuous
28s T1 (TX18701) - GOI Maintenance and doble on transformer  
ALTALINK 12-Sep-16 13:00 14-Sep-16 12:00 1.96 Days
Continuous
266s FSC2 - GOI FSC2 maintenance  
ALTALINK 13-Sep-16 07:30 15-Sep-16 17:30 2.42 Days
Continuous
1116L (167s-170s) GOI Clean and cold galvanize outboard arms at structures 24, 26, and 28  
ALTALINK 13-Sep-16 08:00 13-Sep-16 09:00 60 Mins
Daily
213s 138kV Bus - Relay Wire Trips to 213s 452 from 87/138kVB1, 10 Minutes loss of Protection while new bus trips are being wired. Bus Protection Out for 10 Minutes.  
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  
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 08:00 15-Sep-16 17:00 1.38 Days
Continuous
28s T2 (TX18775) - GOI Maintenance and doble on transformer  
ALTALINK 14-Sep-16 08:00 20-Sep-16 18:00 6.42 Days
Continuous
510s 500kV 'B' Bus and AC Filter Bank #2 Switch adjustments to help eliminate corona  
ALTALINK 14-Sep-16 12:00 15-Sep-16 17:00 29 Hours
Continuous
266s FSC1 - GOI FSC1 maintenance  
ATCO 15-Sep-16 07:00 26-Sep-16 17:30 11.44 Days
Continuous
7L20 This outage will be salvage structures/conductor on 7L20, erect new switch and structures, tie into 7L20 and commission.  
ALTALINK 19-Sep-16 07:00 24-Sep-16 19:00 5.5 Days
Continuous
41s T11 (41s Medicine Hat) maintenance  
ATCO 19-Sep-16 07:00 04-Oct-16 17:30 15.44 Days
Continuous
919S 902T,847S 904PT,847S 901,847S 903,919S 907,847S 901PT,847S 904,919S 900 BUS 2 Protection upgrade  
ATCO 19-Sep-16 08:00 29-Sep-16 17:00 10.38 Days
Continuous
7L75 Line mitigation repairs, 861s, 724s, 829s, 754s, & 730s radial fed via 7L68 from 811S Clairmont  
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.  
ENMAX 20-Sep-16 00:01 20-Sep-16 05:00 4.98 Hours
Continuous
11.81L. 11.83L. 11.1TR. 11.4TR. 138KV PT Fall Substation Washing  
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  
ALTALINK 21-Sep-16 08:00 30-Sep-16 17:00 9.38 Days
Continuous
1325L1(510s - 511s) and 1238L - GOI Valve reactor replacement and deficiencies  
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  
ATCO 26-Sep-16 07:00 26-Sep-16 18:00 11 Hours
Continuous
2005s 901A,2005s 901B,2005s 901 Install Fort Hills RAS scheme  
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
ALTALINK 26-Sep-16 13:00 29-Sep-16 17:00 3.17 Days
Continuous
310p352 - GOI 240kV Breaker mtce  
ATCO 27-Sep-16 07:00 27-Sep-16 18:00 11 Hours
Continuous
2005s 902B,2005s 902A,2005s 902 Install Fort Hills RAS scheme, 240kV ring will be open @ 2005s. After the GOI is released we will require a T&O for each switch to test indications.  
EPCOR 28-Sep-16 07:00 28-Sep-16 16:00 9 Hours
Daily
J2404 @ Jasper Switching demonstation  
ATCO 28-Sep-16 07:00 28-Sep-16 18:00 11 Hours
Continuous
2005s 905A,2005s 905B,2005s 905 Install Fort Hills RAS scheme  
BCH 28-Sep-16 09:00 30-Sep-16 17:00 2.33 Days
Continuous
5L96 (Selkirk - Vaseux Lake) insulator replacement and arcing horn installations - BC maintenance does not affect AB ATC AB-BC
ENMAX 28-Sep-16 12:00 28-Sep-16 16:00 4 Hours
Continuous
23.80L. 23.4TR Fall Substation Washing  
ATCO 29-Sep-16 07:00 29-Sep-16 18:00 11 Hours
Continuous
2005s 906,2005s 906B,2005s 906A Install Fort Hills RAS scheme  
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  
EPCOR 03-Oct-16 07:00 07-Oct-16 17:00 4.42 Days
Continuous
P2404 @ Petrolia Ct Replacement  
ATCO 03-Oct-16 08:00 03-Oct-16 17:00 9 Hours
Continuous
9L20,755S 901 755S - 901 BREAKER SF6 GL315 PARTIAL TESTING

Bkr 901 Maintenance

RFL Relay Commissioning - 9L20 21A Protection at 755S Cordel & 766S Nevis - Operate breakers / MOD's on both ends to test status to new relays
 
ALTALINK 03-Oct-16 08:00 07-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI Component replacement  
ENMAX 03-Oct-16 08:00 09-Oct-16 16:00 6.33 Days
Continuous
65.1TR. 65s 138KV South Bus Installation of 54.81L receiving structure.  
ALTALINK 03-Oct-16 10:30 07-Oct-16 15:00 4.19 Days
Continuous
39s T2,138kV and 240kV Bus 2 - GOI Upgrading bus protections  
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 19-Oct-16 17:30 15.44 Days
Continuous
919S 900 BUS 1,919S 905,847S 903,847S 902,847S 901T 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 14-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI Component replacement  
ALTALINK 10-Oct-16 08:00 14-Oct-16 17:00 4.38 Days
Continuous
942L (681s - 71s) - GOI Emergency Damper Replacements  
ALTALINK 10-Oct-16 08:00 07-Nov-16 17:00 28.42 Days
Continuous
966L/9L966 (650s - A932s) - GOI Emergency Damper Replacements  
ALTALINK 10-Oct-16 08:00 07-Nov-16 17:00 28.42 Days
Continuous
1064L (102s - 74s) - GOI Emergency Damper Replacements  
ALTALINK 10-Oct-16 08:00 10-Nov-16 17:00 31.42 Days
Continuous
1071L (312s - 205s) - GOI Emergency Damper Replacements  
ENMAX 10-Oct-16 08:00 11-Dec-16 16:00 62.38 Days
Continuous
65s 138KV South Bus. 65B138-D84 Install 65MD138-54.81, SW 89, 65B138-D83.  
ALTALINK 11-Oct-16 09:00 14-Oct-16 17:00 3.33 Days
Continuous
310p69 & TX 18153 (T30) GOI Replace breaker 310p69. Associated redundant protection will be taken out of service one at a time to allow work on the CT circuits. 234L1 will be closed to supply the 69 kV loads at 310p, 867s & 821s from 19s Wabamun.  
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 12-Oct-16 08:00 26-Oct-16 16:00 14.33 Days
Continuous
21.80L (SWCRR)- Allteck 21.80 OOS #1  Aug 8th – 15th for Cable pulling and training / racking Termination/testing/completion  
ALTALINK 13-Oct-16 10:00 14-Oct-16 15:00 29 Hours
Continuous
310p 240 kV B Bus Advice Replace PT2375 and 310p123. Associated redundant protection may be taken out of service one at a time to allow work on the PT circuits.  
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  
ATCO 16-Oct-16 07:00 28-Oct-16 17:30 12.44 Days
Continuous
791S 411T,791S 409T,791S 459PT,791S 462PT,791S 400PT9,791S 400PT8,791S 401T,791S 400 BUS B,791S 400 BUS T2 disconnect and reconnect protection/control/metering cabling  
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  
EPCOR 17-Oct-16 06:00 21-Oct-16 17:00 4.46 Days
Continuous
1058L Lambton - Ellerslie Line Maint  
EPCOR 17-Oct-16 06:00 21-Oct-16 17:00 4.46 Days
Continuous
1058L Lambton - Summerside Line Maint  
EPCOR 17-Oct-16 07:00 21-Oct-16 17:00 4.42 Days
Continuous
920L @ Castle downs Ct Replacement  
EPCOR 17-Oct-16 07:00 21-Oct-16 17:00 4.42 Days
Continuous
C2406 @ Cloverbar Breaker Maint  
ATCO 17-Oct-16 08:00 21-Oct-16 15:00 4.29 Days
Continuous
834S 902T tapchanger vibro-acoustic measurements  
ALTALINK 17-Oct-16 08:00 21-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI 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 17-Oct-16 08:00 18-Nov-16 17:00 32.42 Days
Continuous
1061L (12s - 681s) - GOI Emergency Damper Replacements  
ALTALINK 17-Oct-16 10:30 21-Oct-16 15:00 4.19 Days
Continuous
39s T1,138kV and 240kV Bus 1 - GOI Upgrading bus protections  
EPCOR 24-Oct-16 06:00 28-Oct-16 17:00 4.46 Days
Continuous
1098L Jasper - Poundmaker Line Maint  
ATCO 24-Oct-16 08:00 04-Nov-16 18:00 11.42 Days
Continuous
840S CONVERTER McNeill 2016 Fall turn around. Site shut down for maint. work. AB-SK
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  
ENMAX 28-Oct-16 08:00 11-Nov-16 16:00 14.38 Days
Continuous
7.82L (SWCRR)-Relocated a section of 7.82 L around the new planned intersection at 69Str SW and the SWCRR(HW8).  
ATCO 31-Oct-16 07:00 09-Nov-16 17:30 9.48 Days
Continuous
7L33,845S 144kV Bus 7L33 ARECL circuit deficiencies  
ALTALINK 10-Nov-16 08:00 16-Dec-16 17:00 36.38 Days
Continuous
1053L (132s - 324s) - GOI Emergency Damper Replacements  
ALTALINK 14-Nov-16 08:00 16-Dec-16 17:00 32.38 Days
Continuous
994L (312s - 103s) - GOI Emergency Damper Replacements  
ALTALINK 14-Nov-16 13:00 25-Nov-16 17:00 11.17 Days
Continuous
163s T2 (Tx18482) GOI Replace 163s T2 Bushings, T2 Maintenance, repalce a CT  
ALTALINK 21-Nov-16 08:00 16-Dec-16 17:00 25.38 Days
Continuous
1054L (13s - 12s) - GOI Emergency Damper Replacements  
ATCO 28-Nov-16 07:00 28-Nov-16 12:00 5 Hours
Continuous
7L91,7L583 Attach bypass to 7L91 closing loop, this bypass will effect the area cutplanes  
ALTALINK 28-Nov-16 08:00 16-Dec-16 17:00 18.38 Days
Continuous
1065L (102s - 74s) - GOI Emergency Damper Replacements  
ENMAX 03-Jan-17 08:00 03-Jan-17 16:00 8 Hours
Continuous
23.80L. 23.4TR HV SW maintenance SW84, SW87, 23.4MD, SW88?  
ALTALINK 03-Jan-17 08:00 12-Jan-17 17:00 9.38 Days
Continuous
1065L (102s - 74s) - GOI Emergency Damper Replacements  
ALTALINK 03-Jan-17 08:00 08-Feb-17 17:00 36.38 Days
Continuous
1053L (132s - 324s) - GOI Emergency Damper Replacements  
ALTALINK 16-Jan-17 08:00 10-Feb-17 18:00 25.42 Days
Continuous
1038L (138s - 266s - 237s) - GOI Emergency Damper Replacements  
ENMAX 23-Jan-17 08:00 24-Jan-17 16:00 1.33 Days
Continuous
7.84L. 36.81L. 36.1TR. 36B138-7.84 HV SW/MD Maintenance 36.1MD, SW81, SW82, SW87, SW88, SW89, SW90 @ 36 Sub. 36.3MD?? SF6 Gas Sample 36B138-7.84  
ENMAX 30-Jan-17 08:00 31-Jan-17 16:00 1.33 Days
Continuous
162s 138KV & 240KV Bus. 162.1TR Doble 162PT240-Z43, HV SW/MD Maintenance 162.1TR 138kV & 240kV MDs, SW81, SW131, SW141.  
ENMAX 30-Jan-17 08:00 10-Feb-17 16:00 11.33 Days
Continuous
28.80L. 28s & Sarcee 138KV Bus Differential Protection Line Protection Upgrade  
ENMAX 01-Feb-17 08:00 02-Feb-17 16:00 1.33 Days
Continuous
162s 138KV & 240KV Bus. 162.2TR Doble Z44PT. HV SW/MD Maintenance 162.2RT 138kV & 240kV MDs, SW88, SW136, SW146  
ENMAX 06-Feb-17 08:00 17-Feb-17 16:00 11.33 Days
Continuous
24.83L Line Protection Upgrade on 24.83L  
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 06-Mar-17 09:00 17-Mar-17 10:00 11 Days
Continuous
520s1201 (1201L) - Advice for BCH CBK 5CVT4 Replacement AB-BC
ALTALINK 22-Mar-17 08:00 07-Apr-17 17:00 16.38 Days
Continuous
1106L (237s - C65s) - GOI Emergency Damper Replacements  
ALTALINK 25-Mar-17 07:00 07-Apr-17 17:00 13.42 Days
Continuous
916L (42s-5s) GOI SWCRR: Foundation work for future U/G Riser structures.  
ENMAX 01-Apr-17 08:00 01-Apr-17 16:00 8 Hours
Continuous
932L Doble PT 932L  
ALTALINK 10-Apr-17 08:00 27-Apr-17 17:00 17.38 Days
Continuous
1107L (237s - C65s) - GOI Emergency Damper Replacements  
ALTALINK 13-Apr-17 08:00 27-Apr-17 17:00 14.38 Days
Continuous
38s T4 (Tx18247) GOI Replace T4  
ENMAX 17-Apr-17 08:00 21-Apr-17 16:00 4.33 Days
Continuous
30.81L (SWCRR)-Install new Double Dead-end structures for cut-in to 35 sub and reterminate line, install slack span between 35 sub and new double dead-ends.  
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
ENMAX 01-May-17 08:00 12-May-17 16:00 11.33 Days
Continuous
30.81L (SWCRR)-Disconnect, Remove and Salvage 30.81 line from 42 S to 35 sub, connect the new 35.81 line to 42 S and 35 sub.  
ENMAX 09-May-17 08:00 09-May-17 16:00 8 Hours
Continuous
918L Doble PT 918  
ENMAX 11-May-17 08:00 11-May-17 16:00 8 Hours
Continuous
832L. 10B138-832. 12B138-832 SF6 Gas Sample 10B138-832, Doble 12B138-832  
ENMAX 17-May-17 08:00 18-May-17 16:00 1.33 Days
Continuous
833L. 12B138-833 HV Breaker Inspection, Doble 12B138-833.  
ENMAX 29-May-17 08:00 09-Jun-17 16:00 11.33 Days
Continuous
37.82L. 37s & Janet 138KV Bus Differential Protection Line Protection Upgrade  
ENMAX 08-Jun-17 08:00 08-Jun-17 16:00 8 Hours
Continuous
24.83L. 24B138-24.83 Doble breaker  
ALTALINK 17-Jun-17 07:00 08-Jul-17 17:00 21.42 Days
Continuous
906L (17s-42s) GOI. SWCRR: String new alignment  
ALTALINK 17-Jun-17 07:00 08-Jul-17 17:00 21.42 Days
Continuous
928L (17s-42s) GOI. SWCRR: Line relocate: Set structures and string.  
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  
ENMAX 28-Aug-17 08:00 28-Aug-17 16:00 8 Hours
Continuous
30.81L Disconnect 30.81 line from 35 sub to denergize 30 sub for salvage of 30 sub and remainder of 30.81 L  
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
ENMAX 16-Oct-17 08:00 27-Oct-17 16:00 11.33 Days
Continuous
39.82L. 162s 138KV Bus Diameter. 39s 138KV Bus Differential Protection Line Protection Upgrade  
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: 2016-07-28   5:51:14 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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