Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2016-07-09

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 30-Aug-16 17:00 121.71 Days
Continuous
1083L (63s Red Deer - 288s Wolf Creek),755L (63s Red Deer - 247s Piper Creek) rebuild 1083L,rebuild 755L  
ALTALINK 25-May-16 06:00 27-Jul-16 06:00 63 Days
Continuous
250p11 (250p Bighorn) maintenance  
ALTALINK 27-Jun-16 17:00 25-Jul-16 12:00 27.79 Days
Continuous
42s Sarcee 240kV South Bus,42s C2 (42s Sarcee),42s C3 (42s Sarcee),42s T2 (42s Sarcee),906L (17s Benalto - 42s Sarcee),916L (42s Sarcee - 5s East Calgary) 916L remains out of service due to jumpers opened on 42s North 240kV Bus,replace strain insulators, open jumpers on 240 kV South Bus to create open point 'D'  
ATCO 04-Jul-16 08:00 15-Jul-16 15:00 11.29 Days
Continuous
2029S 500kV Bus,2029S 502VR,2029S 1200SST2 check bus section for corona discharge and maintenance  
TRANSALTA 04-Jul-16 11:00 10-Jul-16 17:00 6.25 Days
Continuous
59s T1 (59s Peigan) bushing replacement  
EPCOR 05-Jul-16 07:00 15-Jul-16 17:00 10.42 Days
Continuous
330p Genesee 500kV Bus 2,330P 12TC2 (330p Genesee) protection upgrade  
ATCO, CNRL 07-Jul-16 08:00 09-Jul-16 15:00 2.29 Days
Continuous
75-PLH-3 (838s Horizon Mining - 842s Horizon Upgrading),838s 75-BC-1911 (838s Horizon Mining),838s 75-BC-1912 (838s Horizon Mining),842s 75-1902 (842s Horizon Upgrading),842s 75-1903 (842s Horizon Upgrading),75-TR-4701 (842s Horizon Upgrading),75PHL-902 (838s Horizon Mining - 849s Joslyn) testing of voltage transformers  
CNRL 07-Jul-16 08:00 07-Aug-16 15:00 31.29 Days
Continuous
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  
EPCOR, ALTALINK 08-Jul-16 07:00 02-Aug-16 17:00 25.42 Days
Continuous
1056L (89s Ellerslie - 629s Argyll Transfer Station),240BA2 (814s Bellamy - 629s Argyll Transfer Station) tower refurbishment / degassing  
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 15-Jul-16 17:00 4.42 Days
Continuous
J2407 @ Jasper Breaker Maint @ Doble  
ATCO 11-Jul-16 07:00 20-Jul-16 17:30 9.44 Days
Continuous
845S 144kV Bus,7L33 7L33 ARECL circuit deficiencies  
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  
ATCO 12-Jul-16 08:00 12-Jul-16 12:00 4 Hours
Continuous
840S McNeill Station remove old station service wiring AB-SK
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  
ATCO 12-Jul-16 08:00 14-Jul-16 17:00 2.38 Days
Continuous
2075S 504A 504A Mechanical Repair, SVC2 will remain in service while SVC1 is out of service. No restrictions to the DC or AC system while it is out of service.  
ATCO 14-Jul-16 08:00 14-Jul-16 12:00 4 Hours
Continuous
840S CONVERTER connect new station service AB-SK
ATCO 14-Jul-16 08:00 14-Jul-16 16:00 8 Hours
Continuous
Stoney Mtn_T-Telecom STONEY MTN SAR Upgrade, 6 minute outage only, Affects7L71 Ch A & B TP, Does not affect any SCADA visibility and Control.
CCTS
EXTEP001 - ATCO Gas CCT Stoney Mtn
TPRFF116 - 7L71 A Protection
TPRFF117 - 7L71 B Protection
TPRFF118 - 7L71 A Protection
TPRFF119 - 7L71 B Protection
 
ATCO 18-Jul-16 07:00 22-Jul-16 17:00 4.42 Days
Continuous
9L58,848S 240kV BUS,888S 240kV BUS 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.  
ALTALINK 18-Jul-16 08:00 22-Jul-16 16:00 4.33 Days
Continuous
59s616 & 616L (59s-383s-103s) GOI 59s7 replacement. Corrdinated with 383s annual maintenance and shutdown.  
ALTALINK 18-Jul-16 09:00 18-Jul-16 13:00 4 Hours
Daily
9071R MPLS Firmware Upgrade - TPR upgrading software; TPR outage  
ATCO 18-Jul-16 09:30 20-Jul-16 16:00 2.27 Days
Continuous
809S 901T,809S 503R,809S 504R TRANSFORMER CLASS1 MAJOR TESTING, 901T, 503R and 504R also OOS for the Duration.
Maint on 901T, 701 Breaker
All Load being fed from 902T, Station service fed from Alt supply.
 
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 19-Jul-16 09:00 19-Jul-16 13:00 4 Hours
Daily
13s MPLS Firmware Upgrade - TPR upgrading software; TPR outage  
ALTALINK 19-Jul-16 14:00 19-Jul-16 17:00 3 Hours
Daily
9495R MPLS Firmware Upgrade - TPR Upgrading the software on the router @ 9495R; 995L both Channels A & B will be removed from service one at a time  
ALTALINK 20-Jul-16 08:00 20-Jul-16 17:00 9 Hours
Daily
19s 138 kV Bus 2 GOI Remove old "Gap" arrestors  
ALTALINK 20-Jul-16 08:00 21-Jul-16 17:00 1.38 Days
Continuous
59s852 - GOI 240kV breaker maintenance  
ALTALINK 20-Jul-16 09:00 20-Jul-16 13:00 4 Hours
Daily
887L RAS (48s - BCH) - TPR Software upgrade at 9282R Buffalo Hill 7750 MPLS router, TPR 466.1 is currently disabled, this will have to be verified real time.  
EPCOR 25-Jul-16 07:00 27-Jul-16 17:00 2.42 Days
Continuous
L2403 @ Lambton Doble  
ALTALINK 25-Jul-16 08:00 27-Jul-16 17:00 2.38 Days
Continuous
511s T30,SVC Plus,R1 & R2 - GOI Adjust risers  
EPCOR 25-Jul-16 08:00 28-Jul-16 16:00 3.33 Days
Continuous
908L/908AL (89s – 52s – 38s) - GOI SCADA Upgrade Project  
ALTALINK 25-Jul-16 12:00 25-Jul-16 17:00 5 Hours
Daily
632s PS1 (TX18793) - GOI Phase shifter doble test  
ALTALINK 25-Jul-16 12:00 28-Jul-16 16:00 3.17 Days
Continuous
908L/908AL (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'  
EPCOR 26-Jul-16 07:00 26-Jul-16 17:00 10 Hours
Continuous
CDS1 @ Cloverbar CDS1 Repair  
ALTALINK 26-Jul-16 08:00 27-Jul-16 17:00 1.38 Days
Continuous
103s1252 - GOI 240kV breaker maintenance  
ALTALINK 26-Jul-16 08:00 27-Jul-16 17:00 1.38 Days
Continuous
681s T1 GOI Retest paralleling scheme, transformers will be switch out of service 1 at a time. The transformers will also be switched into service 1 at time. (No line outages).  
ALTALINK 26-Jul-16 08:30 27-Jul-16 17:30 1.38 Days
Continuous
681s T2 GOI Retest paralleling scheme, transformers will be switch out of service 1 at a time. The transformers will also be switched into service 1 at time. (No line outages).  
ALTALINK 27-Jul-16 08:00 27-Jul-16 17:00 9 Hours
Daily
19s 138 kV Bus 2 GOI Install new piles  
ENMAX 27-Jul-16 08:00 28-Jul-16 16:00 1.33 Days
Continuous
832L. 12B138-832 HV Breaker Inspection. Sprecher.  
ALTALINK 27-Jul-16 12:00 06-Aug-16 08:00 9.83 Days
Continuous
916L (42s - 5s) GOI Remains out of service due to jumpers opened on 42s North 240 kV Bus  
ENMAX 28-Jul-16 08:00 28-Jul-16 16:00 8 Hours
Continuous
21s. 50L. 21.2TR. 21CAP Install PT for Harmoninc Monitoring. Special return switching instructions required for PT energization  
ALTALINK 28-Jul-16 09:00 28-Jul-16 14:00 5 Hours
Daily
89s352 - GOI Rebuilding trip dashpot  
ALTALINK 28-Jul-16 10:00 28-Jul-16 11:00 60 Mins
Daily
74s102 (C3) - Advice De-energize for cap bank weed spraying.  
ALTALINK 28-Jul-16 11:00 28-Jul-16 12:00 60 Mins
Daily
74s103 (C4) - Advice De-energize for cap bank weed spraying.  
ALTALINK 28-Jul-16 14:00 28-Jul-16 15:00 60 Mins
Daily
42s74 (C2) - GOI De-energize for cap bank weed spraying.  
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
EPCOR 02-Aug-16 07:00 31-Aug-16 17:00 29.42 Days
Continuous
TX2 @ Castle Downs Oil reclamation  
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 co-locate work on tower structures  
ATCO 02-Aug-16 09:00 02-Aug-16 16:00 7 Hours
Continuous
800S 702,7L73 Complete Partial PM on Breaker 702, 7L73 open ended for the duration of the work  
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
920L @ Caslte downs Repair Disconnect CDDS13  
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.  
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
 
EPCOR 04-Aug-16 07:00 04-Aug-16 17:00 10 Hours
Continuous
921L @ Cloverbar - Lamoureux Doble  
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 08-Aug-16 17:00 10 Hours
Continuous
DDS13 @ Dome Install new Coupling  
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  
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 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 10-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 09-Aug-16 08:00 10-Aug-16 17:00 1.38 Days
Continuous
42s T2 GOI Replace strain insulators on North 138 kV Bus over 42s60.  
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.  
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  
ATCO 15-Aug-16 07:00 15-Aug-16 17:30 10.5 Hours
Continuous
7L230,7L67 Build bypass between 7L67 and 7L230 at 743S Sarah Lake for protection upgrade and 702TCS replacement.  
ATCO 15-Aug-16 07:00 19-Aug-16 17:00 4.42 Days
Continuous
2075S 901T,2075S ACF11 Online Pump Addition/Cold Start Upgrade
SVC2 (20K02-ACF21) will remain in service while SVC1 (20K01-ACF11) is out of service.
This will provide no restrictions to the DC or AC system while it is out of service.
 
ALTALINK 15-Aug-16 08:00 18-Aug-16 16:00 3.33 Days
Continuous
909L (320p - 665s) GOI Remove 909L from 320p and re-connect at 310p.  
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 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 12:00 18-Aug-16 16:00 3.17 Days
Continuous
947L (89s - E987s) - GOI RTU Replacement Project  
ALTALINK 16-Aug-16 08:00 16-Aug-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  
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  
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.  
ATCO 19-Aug-16 07:00 29-Sep-16 17:30 41.44 Days
Continuous
850S 702T,791S 400 BUS T1,791S 456PT,791S 701T,791S 400PT7,791S 453PT,791S 450PT,791S 451PT,791S 410T,791S 403T,791S 400 BUS A,791S 402T maintenance  
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  
ATCO 22-Aug-16 07:00 22-Aug-16 18:00 11 Hours
Continuous
2005s 901 Install Fort Hills RAS scheme.  
ATCO 22-Aug-16 07:00 26-Aug-16 17:00 4.42 Days
Continuous
2075S 902T,2075S ACF21 Online Pump Addition/Cold Start Upgrade
SVC1 will remain in service while SVC2 is out of service.
This will provide no restrictions to the DC or AC system while it is out of service.
 
ATCO 22-Aug-16 07:00 02-Sep-16 17:30 11.44 Days
Continuous
733S 702T,7L40,7L80,733S 700PT1,733S 502VR,733S 701,733S 702 Install mobile 835S.
Reconfigure 144 kv bus, remove old 702T and 502VR. Finish new 702T install.
Remove 835S Mobile
 
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 02-Sep-16 17:00 11.29 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) Line Maintenance AB-BC
ATCO 22-Aug-16 10:30 31-Aug-16 11:30 9.04 Days
Continuous
7L75 Line mitigation repairs, 861s, 724s, 829s, 754s, & 730s radial fed via 7L68 from 811s Clairmont  
ATCO 23-Aug-16 07:00 23-Aug-16 18:00 11 Hours
Continuous
2005s 902 Install Fort Hills RAS scheme.  
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  
ATCO 24-Aug-16 07:00 24-Aug-16 18:00 11 Hours
Continuous
2005s 905 Install Fort Hills RAS scheme.  
ATCO 25-Aug-16 07:00 25-Aug-16 18:00 11 Hours
Continuous
2005s 906 Install Fort Hills RAS scheme.  
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  
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 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
 
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  
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 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
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 16-Sep-16 18:00 10.42 Days
Continuous
1037L (237s - 266s - 138s) - GOI Install Bird Diverters, Replace Spacer Dampers  
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  
ALTALINK 06-Sep-16 10:00 28-Oct-16 17:00 52.29 Days
Continuous
777L (245s - 48s) - GOI Line maintenance  
ALTALINK 12-Sep-16 09:00 22-Sep-16 17:00 10.33 Days
Continuous
163s T2 (Tx18482) GOI *TENTATIVE* Replace 163s T2 Bushings, T2 Maintenance, repalce a CT  
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  
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.  
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 19-Sep-16 07:00 24-Sep-16 19:00 5.5 Days
Continuous
41s T11 (41s Medicine Hat) maintenance  
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  
ALTALINK 21-Sep-16 08:00 30-Sep-16 17:00 9.38 Days
Continuous
1325L1(510s - 511s) - 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
409s 138kV Bus B1 (T2,856L,ALC_01L) Ad 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
EPCOR 28-Sep-16 07:00 28-Sep-16 16:00 9 Hours
Daily
J2404 @ Jasper Switching demonstation  
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  
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  
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
39s T2,138kV and 240kV Bus 2 - GOI Upgrading bus protections  
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 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 1,847S 903,919S 905,847S 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 14-Oct-16 17:00 4.38 Days
Continuous
910L (89s-288s) GOI Component replacement  
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 25-Oct-16 17:00 14.33 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  
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  
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 07:00 21-Oct-16 17:00 4.42 Days
Continuous
920L @ Castle downs Ct Replacement  
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 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.  
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
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 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 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: 2016-06-28   5:14:16 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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