Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2017-03-11

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
ATCO 10-Jan-17 17:00 30-Apr-17 16:00 109.92 Days
Continuous		 732s 902T (732s Mitsue) forced outage. transformer tap changer  
ALTALINK 26-Feb-17 14:00 03-Apr-17 17:00 36.08 Days
Continuous		 310p 6G (310p Sundance) maintenance  
ALTALINK 27-Feb-17 05:30 21-Mar-17 17:30 22.46 Days
Continuous		 1053L (132s Ware Junction - 324s Cassils) damper replacements, QA/QC checks  
ALTALINK 27-Feb-17 07:30 11-Mar-17 17:30 12.42 Days
Continuous		 966L (650s Hansman Lake - 932s Pemukan) damper replacements, QA/QC checks  
ALTALINK 27-Feb-17 09:30 02-Apr-17 15:30 34.21 Days
Continuous		 310p 2452 (310p Sundance),310p 2352 (310p Sundance) replacement of breaker control modules, maintenance  
ALTALINK 04-Mar-17 07:30 12-Apr-17 17:30 39.38 Days
Continuous		 1038L (138s Windy Flats - 237s Foothills) damper replacement, QA/QC checks  
ALTALINK 06-Mar-17 09:00 16-Mar-17 17:00 10.29 Days
Continuous		 922L (310p Sundance - 17s Benalto),17S T3 (17s Benalto),17s Benalto 240 kV North Bus 1 replace insulators on the 240kV north bus, replace 17s700 CVT, replace 17s922N & 17s35 switches  
ATCO 07-Mar-17 08:00 13-Mar-17 16:00 6.29 Days
Continuous		 7L64 MITIGATION WORK  
EPCOR 09-Mar-17 07:00 17-Mar-17 17:00 8.38 Days
Continuous		 Tx1 outage and P2401/P2402 BF Protection Outages @ Petrolia S/S Performing Breaker op-checks as part of relay maintenance and repairs to P2401 BF and P2402 BFrelay.  
ENMAX 11-Mar-17 08:00 11-Mar-17 12:00 4 Hours
Continuous		 28.80L. 28.2TR Spring Substation Washing  
ALTALINK 13-Mar-17 07:00 13-Mar-17 07:15 15 Mins
Daily		 1059L (E803s-E52s-38s) EPCOR - De-energi EPCOR requires 1059L de-energized to facilitate opening E52sEDS1  
ATCO 13-Mar-17 07:00 17-Mar-17 17:00 4.42 Days
Continuous		 9L913 Upgrade protection at both ends.  
EPCOR 13-Mar-17 07:00 17-Mar-17 17:00 4.42 Days
Continuous		 L2402 Breaker Outage and L2402 BF Protection Outage @ Lambton S/S Performing Breaker op-checks as part of relay maintenance and repairs to L2402 BF relay.  
EPCOR 13-Mar-17 07:00 17-Mar-17 17:00 4.42 Days
Continuous		 Tx1 outage @ East Industrial S/S Performing Relay Op-Checks.  
ATCO 13-Mar-17 08:00 15-Mar-17 16:00 2.33 Days
Continuous		 Kettle River_S-Telecom 9L45 A & B TPR  
ALTALINK 13-Mar-17 11:00 16-Mar-17 17:00 3.25 Days
Continuous		 1209L (89s - 330p) - GOI SCADA Equipment Upgrade  
ATCO 14-Mar-17 13:30 14-Mar-17 14:30 60 Mins
Continuous		 Hairy Hill_T-Telecom 7L139 A & B TPR  
ATCO 14-Mar-17 16:00 14-Mar-17 17:00 60 Mins
Continuous		 Norberg_S-Telecom Norberg_S SAR-7705 Requires a Firmware upgrade to Version 6,
Norberg U/V RAS to be turned off for the duration of the work as per ATCO Risk Assessment
Upgrade will take around 45 minutes to complete with only a 5 minute Service outage time.
Circuits affected
TPRFF131 - 7L139 A Protection
TPRFF130 - 7L139 B Protection
VPRN 5 - DNP/IP SCADA

Norberg Sub		  
ATCO 15-Mar-17 08:00 15-Mar-17 16:00 8 Hours
Continuous		 Dawes_S-Telecom 9L89A Dawes to McMillan
TPR FF 135 9L89B Dawes to McMillan
TPR FF 141 9L07A Dawes to Dover
TPR FF 142 9L07B Dawes to Dover
TPR FF 145 7L38A Algar to Horse River VIA Dawes
TPR FF 146 7L38B Algar to Horse River VIA Dawes
TPR FF 149 7L194A Dawes to Willow Lake
TPR FF 150 7L194B Dawes to Willow Lake
VPRN 5 DNP/IP SCADA		  
ATCO 15-Mar-17 08:30 15-Mar-17 09:30 60 Mins
Continuous		 StPaul_S-Telecom St.Paul_S SAR-7705 Firmware upgrade to Version 6
Norberg U/V RAS to be turned off for the duration of the work as per ATCO Risk Assessment
Upgrade will take around 45 minutes to complete with only a 5 minute Service outage time.
TPRFF131 - 7L139 A Protection
TPRFF130 - 7L139 B Protection
VPRN 5 - DNP/IP SCADA
St Paul Sub		  
ALTALINK 15-Mar-17 08:30 20-Mar-17 17:30 5.38 Days
Continuous		 310p696 Advice Transformer maintenance  
ATCO 15-Mar-17 11:00 15-Mar-17 12:00 60 Mins
Continuous		 Whitby Lake_S-Telecom Whitby Lake substation SAR-7705 requires a Firmware upgrade to Version 6
Upgrade will take around 45 minutes to complete with only a 5 minute Service outage time.
Affected Circuits:
TPRFF131 - 7L139 A Protection
VPRN 5 - DNP/IP SCADA

Whitby Lake Sub		  
ATCO 15-Mar-17 14:00 15-Mar-17 15:00 60 Mins
Continuous		 Bonnyville_S-Telecom BONNYVILLE SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5 minute Service outage time.
Circuits affected:
TPRFF152 - 7L89 Protection (BFTT)
VPRN 5 - DNP/IP SCADA

Bonnyville Sub		  
ATCO 15-Mar-17 16:30 15-Mar-17 17:30 60 Mins
Continuous		 BearTrap_S-Telecom WHITBY LAKE SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5 minute Service outage time.
Circuits Affected:
TPRFF126 - 7L24 Protection (BFTT)
TPRFF127 - 7L24 Protection
VPRN 5 - DNP/IP SCADA'

Bear Trap Sub		  
ATCO 16-Mar-17 10:00 16-Mar-17 11:00 60 Mins
Continuous		 Marguerite Lake_S-Telecom MARGUERITE LAKE SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
TPREE112 - 9L36 A Protection
TPREE114 - 9L37 A Protection
TPREE108 -7L91 A Protection
TPREE109 -7L91 B Protection
TPRFF151 - 7L89A Protection
TPRFF152 - 7L89B Protection
VPRN 5 - DNP/IP SCADA

Lacorey Sub

Bear Trap Sub		  
ATCO 16-Mar-17 12:00 16-Mar-17 13:00 60 Mins
Continuous		 LaCorey_S-Telecom LA COREY SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
TPRFF151 - 7L89 Protection (BFTT)
TPRFF152 - 7L89 Protection
VPRN 5 - DNP/IP SCADA

La corey Sub		  
ATCO 16-Mar-17 15:00 16-Mar-17 16:00 60 Mins
Continuous		 GrandeCentre_S-Telecom GRAND CENTRE SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
TPRFF126 - 7L24 Protection
SUPEE046 - Grande Centre Sub SCADA		  
ALTALINK 17-Mar-17 09:00 19-Mar-17 16:30 2.31 Days
Continuous		 520s T1 (520s Bennett),1201L (520s Bennett - BCH Cranbrook) swap out transformers back to normal T1-4 to T1-3 AB-BC
MONTANA 17-Mar-17 09:00 19-Mar-17 16:30 2.31 Days
Continuous		 MATL (120s Picture Butte - Montana) align with 1201L outage AB-MATL
ALTALINK 17-Mar-17 16:45 17-Mar-17 17:00 15 Mins
Daily		 1059L (E803s-E52s-38s) EPCOR - De-energi EPCOR requires 1059L de-energized to facilitate closing E52sEDS1  
ENMAX 18-Mar-17 08:00 18-Mar-17 10:30 2.5 Hours
Continuous		 162B240-RB134 SF6 Gas RE - Sample  
ENMAX 18-Mar-17 10:30 18-Mar-17 13:30 3 Hours
Continuous		 162B240-RB135 SF6 Gas Sample  
ENMAX 18-Mar-17 13:30 18-Mar-17 16:00 2.5 Hours
Continuous		 162B240-RB132 SF6 Gas Sample  
ALTALINK 20-Mar-17 07:00 20-Mar-17 07:15 15 Mins
Daily		 908L (89s-E52s-38s) EPCOR - De-energize EPCOR requires 908L de-energized to facilitate opening E52sEDS2  
EPCOR 20-Mar-17 07:00 24-Mar-17 17:00 4.42 Days
Continuous		 L2403 Breaker Outage and L2403 BF Protection Outage @ Lambton S/S Performing Breaker op-checks as part of relay maintenance and repairs to L2403 BF relay.  
EPCOR 20-Mar-17 07:00 25-Mar-17 17:00 5.42 Days
Continuous		 Tx3 outage @ JasperS/S Performing Breaker op-checks as part of relay maintenance.  
EPCOR 20-Mar-17 07:00 25-Mar-17 17:00 5.42 Days
Continuous		 Tx2 outage @ East Industrial S/S Performing Relay Op-Checks. Cutover of new ION meter.  
ALTALINK 20-Mar-17 08:00 23-Mar-17 17:00 3.38 Days
Continuous		 310p B Bus & 973L (310p-39s) GOI Insulator replacement and switch maintenance  
ENMAX 20-Mar-17 08:00 31-Mar-17 16:00 11.33 Days
Continuous		 37.82L. 37s & Janet 138KV Bus Differential Protection Line Protection Upgrade  
BCH 20-Mar-17 09:00 24-Mar-17 17:00 4.33 Days
Continuous		 5L96 (Selkirk - Vaseux Lake) replace marker balls, shot insulators and damaged conductor AB-BC
ATCO 20-Mar-17 10:15 20-Mar-17 11:15 60 Mins
Continuous		 Strome_T-Telecom STROME TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
SUPEE090 - Heisler SCADA
TPRET071 - 7L702 B
TPRET070 - 7L702 A
TPRET035 - 7L224 A
TPRET036 - 7L224 B		  
ALTALINK 20-Mar-17 11:00 23-Mar-17 17:00 3.25 Days
Continuous		 1212L (89s - 12s) - GOI SCADA Equipment Upgrade  
ATCO 20-Mar-17 11:30 20-Mar-17 12:30 60 Mins
Continuous		 Heatburg_S-Telecom HEATBURG SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to the following ccts;
SUPEP064 - Heatburg SCADA
TPRET031 - 7L159 A
TPRET032 - 7L159 B
TPRET072 - 7L159 A
TPRET074 - 7L159 B		  
ENMAX 20-Mar-17 12:00 20-Mar-17 16:00 4 Hours
Continuous		 23.80L. 23.4TR Spring Substation Washing  
ATCO 20-Mar-17 14:15 20-Mar-17 15:15 60 Mins
Continuous		 Elnora_T-Telecom ELNORA TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to the following ccts;.
SUPEP042 - Ghostpine SCADA
SUPEP058 - Three Hills SCADA
SUPEP064 - Heatburg SCADA
TPRET031 - 7L159 A
TPRET032 - 7L159 B
TPRET072 - 7L159 A
TPRET074 - 7L159 B		  
ATCO 20-Mar-17 16:00 20-Mar-17 17:00 60 Mins
Continuous		 Chain Lakes_T-Telecom CHAIN LAKES TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to the following ccts;.

RASEE012 - 9L20 RAS A Cordel/Newell, redundant CHB will remain in service
RASEE013 - 9L20 RAS A Nevis/Newell, redundant CHB will remain in service
RASEE014 - 9L912 RAS A Nevis/Newell, redundant CHB will remain in service
TPREE094 - 9L59 A
TPREE095 - 9L59 B		  
ALTALINK 21-Mar-17 07:30 21-Mar-17 17:30 10 Hours
Daily		 37s T6 (Tx18309) GOI Replace Slack Span Insulators on Secondary Bus between T6 and 37s4  
ALTALINK 21-Mar-17 07:30 09-Apr-17 18:30 19.46 Days
Continuous		 172L (370s - L181s) - GOI Line Rebuild  
ATCO 21-Mar-17 08:00 21-Mar-17 16:00 8 Hours
Continuous		 Birchwood-S-Telecom Birchwood Sub TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to the following ccts;.

TPRNF005 - 9L57 A
TPRNF006 - 9L57 B
TPRFF165 - 9L47 A
TPRFF166 - 9L47 B
"VPRN 5 - DNP/IP SCADA
Yeo Sub
Birchwood Creek Sub
Birchwood Creek Sub IPP"
"VPRN 2 - Telecom
Yeo Sub
Birchwood Creek Sub"
"VPRN 4 - Electric/Metering
Yeo Sub
Birchwood Creek Sub"
"VPLS 500 - Corporate
Yeo Sub
Birchwood Creek Sub"		  
ATCO 21-Mar-17 08:00 23-Mar-17 16:00 2.33 Days
Continuous		 7L27 replace rotten crossarms  
ALTALINK 21-Mar-17 08:00 23-Mar-17 17:00 2.38 Days
Continuous		 17s34 (906L-42s) - GOI Replace 17s34 Airbreak (Like for Like)  
ATCO 21-Mar-17 09:00 21-Mar-17 10:00 60 Mins
Continuous		 Anderson_T-Telecom ANDERSON TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to;

RASEE012 - 9L20 RAS A Cordel/Newell
RASEE013 - 9L20 RAS A Nevis/Newell
RASEE014 - 9L912 RAS A Nevis/Newell
TPREE094 - 9L59 A
TPREE095 - 9L59 B
TPREE096 - 7L128 A
TPREE063 - 7L128 B
TPREE105 - 7L85 Breaker Fail
RASEE023 - Wintering Hills/Anderson RAS
RASEE024 - Nevis/Wheatland RAS
SUPEE049 - Michichi SCADA
SUPEE051 - Bullpound PLC
IPPEE005 - Wheatland IPP SCADA
SUPEE085 - Wintering Hills SCADA
VPRN 5 - DNP/IP SCADA

Rowley		  
ATCO 21-Mar-17 10:30 21-Mar-17 11:30 60 Mins
Continuous		 Fleet _T-Telecom FLEET TOWER - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to;

RASEE012 - 9L20 RAS A Cordel/Newell
RASEE013 - 9L20 RAS A Nevis/Newell
RASEE014 - 9L912 RAS A Nevis/Newell
SUPEE047 - Ribstone SCADA
TPREE094 - 9L59 A
TPREE095 - 9L59 B		  
ATCO 21-Mar-17 13:30 21-Mar-17 14:30 60 Mins
Continuous		 Monitor_S_Telecom MONITOR SUBSTATION- SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time for;

SUPEE048 - Monitor SCADA
TPRET035 - 7L224 A
TPRET036 - 7L224 B
TPREE054 / 7L110 DTT CH C		  
ATCO 21-Mar-17 16:30 21-Mar-17 17:30 60 Mins
Continuous		 Oyen_S-Telecom OYEN SUBSTATION- SAR-7705 UPGRADE TO FIRMWARE VERSION 6
5-minute Service outage time to;

TPRET028 - 7L760 A Protection
TPRET029 - 7L760 B Protection
TPREE057 - 7L760 DTT CH C
SUPEE003 - Oyen SCADA		  
ATCO 22-Mar-17 10:30 22-Mar-17 11:30 60 Mins
Continuous		 Empress_S_Telecom EMPRESS SUBSTATION (ALTA LINK) - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
SUPEE055 - McNEILL SCADA
TPRET030 - 7L830
TPRET028 - 7L760 A Protection
TPRET029 - 7L760 B Protection		  
ATCO 22-Mar-17 14:30 22-Mar-17 15:30 60 Mins
Continuous		 McNeill_S-Telecom McNEILL SUBSTATION - SAR-7705 UPGRADE TO FIRMWARE VERSION 6
Upgrade will take around 45 minutes to complete with only a 5-minute Service outage time.
The circuits will be affected:
SUPEE055 - McNEILL SCADA
TPRET030 - 7L830		  
ENMAX 23-Mar-17 08:00 23-Mar-17 12:00 4 Hours
Continuous		 28.80L. 28.2TR Spring Substation Washing  
ATCO 23-Mar-17 08:00 23-Mar-17 16:00 8 Hours
Continuous		 WillowLake_S-Telecom SAR OS Upgrade.

CCTS
TPRFF138 - 7L36 A Protection
TPRFF139 - 7L36 B Protection
TPRFF149 - 7L194 A Protection
TPRFF150 - 7L150 A Protection
"VPRN 5 - DNP/IP SCADA
Willow Lake Sub
Willow Lake IPP"
"VPRN 2 - Telecom
Willow Lake Sub"
"VPRN 4 - Electric/Metering
Willow Lake Sub"
"VPLS 500 - Corporate
Willow Lake Sub"		  
ATCO 23-Mar-17 08:00 23-Mar-17 16:00 8 Hours
Continuous		 Algar_S-Telecom SAR OS Upgrade.

CCTS
TPRFF145 - 7L38 A Protection
TPRFF146 - 7L38 B Protection
"VPRN 5 - DNP/IP SCADA
Algar Sub"
"VPRN 2 - Telecom
Algar Sub"
"VPRN 4 - Electric/Metering
Algar Sub"
"VPLS 500 - Corporate
Algar Lake Sub"		  
ALTALINK 23-Mar-17 08:00 23-Mar-17 17:00 9 Hours
Daily		 244s T1 & T2 De-energized Investigate paralleling issues for T1 and T2. Out of step relay operates when both transformers are on tap 1 and shouldn't.  
ATCO 24-Mar-17 08:00 26-Mar-17 17:00 2.38 Days
Continuous		 7L75 LINE MITIGATION  
ENMAX 24-Mar-17 12:00 24-Mar-17 16:00 4 Hours
Continuous		 23.80L. 23.4TR Spring Substation Washing  
ALTALINK 25-Mar-17 16:45 25-Mar-17 17:00 15 Mins
Daily		 908L (89s-E52s-38s) EPCOR - De-energize EPCOR requires 908L de-energized to facilitate closing E52sEDS2  
EPCOR 27-Mar-17 07:00 31-Mar-17 17:00 4.42 Days
Continuous		 Tx4 outage @ JasperS/S Performing Breaker op-checks as part of relay maintenance.  
EPCOR 27-Mar-17 07:00 04-Apr-17 17:00 8.42 Days
Continuous		 Tx2 outage and P2404/P2405 BF Protection Outages @ Petrolia S/S Performing Breaker op-checks as part of relay maintenance and repairs to P2404 BF and P2405 BFrelay.  
ALTALINK 27-Mar-17 08:00 07-Apr-17 17:30 11.4 Days
Continuous		 86s T1 GOI Replace 240 kV and 138 kV bushings. Misc TX maintenance.  
ALTALINK 27-Mar-17 09:00 27-Mar-17 10:00 60 Mins
Daily		 310p2152 Advice Trip test from 310p2452 breaker fail protection.  
ALTALINK 27-Mar-17 11:00 30-Mar-17 17:00 3.25 Days
Continuous		 1206L (89s - 12s) - GOI SCADA Equipment Upgrade  
ALTALINK 28-Mar-17 07:30 31-Mar-17 17:30 3.42 Days
Continuous		 916L (42s - 5s) - GOI Replace Steel Members  
ALTALINK 28-Mar-17 07:30 03-Apr-17 17:30 6.42 Days
Continuous		 1064L (74s - 102s) - GOI Damper Replacements  
ATCO 28-Mar-17 08:00 28-Mar-17 16:00 8 Hours
Continuous		 Stoney Mtn_T-Telecom SAR OS Upgrade & TPR cuicuits  
ATCO 28-Mar-17 08:30 30-Mar-17 16:00 2.31 Days
Continuous		 7L64 replace 4 structures for line mitigation  
EPCOR 29-Mar-17 07:00 29-Mar-17 17:00 10 Hours
Continuous		 TX1 Bellamy Repair  
ATCO 29-Mar-17 08:00 31-Mar-17 16:00 2.33 Days
Continuous		 Ruth Lake_S-Telecom SAR OS Upgrade

CCTS
TPRFF169 - 9L58 A Protection
TPRFF170 - 9L58 B Protection		  
ENMAX 01-Apr-17 08:00 01-Apr-17 16:00 8 Hours
Continuous		 932L Doble PT 932L  
ALTALINK 01-Apr-17 08:00 02-Apr-17 17:30 1.4 Days
Continuous		 86s T1 & 240 kV Bus GOI Breaker maintenance 86s1752, switch repair - 86s12A, switch maintenance.  
ALTALINK 02-Apr-17 17:01 15-Apr-17 17:00 13 Days
Continuous		 916L (42s-5s) GOI [SWCRR] SWCRR: Foundation work for future U/G Riser structures  
ALTALINK 02-Apr-17 17:01 15-Apr-17 17:00 13 Days
Continuous		 693L (42s-C10s) GOI [SWCRR] SWCRR Foundation work for future U/G Riser structures  
ALTALINK 03-Apr-17 07:00 06-Apr-17 17:00 3.42 Days
Continuous		 89s T1(TX18724,TX18725,TX18726) - GOI SCADA Equipment Upgrade  
EPCOR 03-Apr-17 07:00 07-Apr-17 17:00 4.42 Days
Continuous		 Tx1 outage @ JasperS/S Performing Breaker op-checks as part of relay maintenance.  
EPCOR 03-Apr-17 07:00 07-Apr-17 17:00 4.42 Days
Continuous		 L2404 Breaker Outage and L2404 BF Protection Outage @ Lambton S/S Performing Breaker op-checks as part of relay maintenance and repairs to L2404 BF relay.  
ATCO 03-Apr-17 08:00 05-Apr-17 17:00 2.38 Days
Continuous		 7L89 Pole change on 7L89/7L91 double cct line, 721s radial fed from 700s  
ALTALINK 03-Apr-17 10:30 04-Apr-17 17:30 31 Hours
Continuous		 905L (19s Wabamun - 37s North Calder),37s 76 (37s North Calder),37s 82 (37s North Calder) 37s79 switch maintenance  
ALTALINK 04-Apr-17 07:00 04-Apr-17 18:00 11 Hours
Daily		 89s 240 kV West Bus GOI Switch maintenance - 89s1 and 89s9  
ALTALINK 04-Apr-17 07:30 08-Apr-17 17:30 4.42 Days
Continuous		 1065L (74s - 102s) - GOI Damper Replacements  
ATCO 05-Apr-17 08:00 06-Apr-17 18:00 1.42 Days
Continuous		 789S 706C,789S 700 BUS 1,7L58,7L59,789S 701R Tie new 144kV bus to old 144kV bus @ 789s for construction, 706C and 701R will be unavailable for dispatch, 7L58 and 7L59 will be open ended at 789s, 7L62 will be tied to 7L64 via bypass switch 7L62D2

AWAITING SLD SHOWING NEW BUS ISOLATION PTS. ADD PTS TO THIS PERMIT ONCE KNOWN (DRS)		  
ALTALINK 05-Apr-17 08:00 15-Apr-17 17:00 10.38 Days
Continuous		 1043L (320p Keephills - 816s Petrolia) Install foundations for future line tap to new 289s  
ALTALINK, ATCO 05-Apr-17 08:30 05-Apr-17 17:30 9 Hours
Continuous		 72s 752 (72s Leismer),72s 852 (72s Leismer),9L990 (72s Leismer - 2049s Kettle River) 72s19 switch maintenance  
ALTALINK 09-Apr-17 07:30 10-Apr-17 17:30 1.42 Days
Continuous		 985L (74s - C25s) - GOI Damper Replacements  
ALTALINK 10-Apr-17 07:00 10-Apr-17 17:00 10 Hours
Daily		 42s T2 and 138kV South Bus - GOI Installing pollution monitors  
EPCOR 10-Apr-17 07:00 14-Apr-17 17:00 4.42 Days
Continuous		 L2405 Breaker Outage and L2405 BF Protection Outage @ Lambton S/S Performing Breaker op-checks as part of relay maintenance and repairs to L2405 BF relay.  
ALTALINK 10-Apr-17 08:00 11-Apr-17 18:00 1.42 Days
Continuous		 L674s725W (725L) Leth Open - Info City Of Lethbridge L674s725W Breaker Maintenance  
ALTALINK 11-Apr-17 07:00 11-Apr-17 17:00 10 Hours
Daily		 42s T1 and 240kV North Bus - GOI Installing pollution monitors  
ALTALINK 11-Apr-17 07:30 12-Apr-17 17:30 1.42 Days
Continuous		 1003L (74s - C25s) - GOI Damper Replacements  
NOVACORP 11-Apr-17 09:00 13-Apr-17 17:00 2.33 Days
Continuous		 330s Nova Corp 138kV Bus 1B,330s BR_50 (330s Nova Corp) maintenance on BR-50  
ALTALINK 12-Apr-17 07:00 12-Apr-17 17:00 10 Hours
Daily		 42s T2 and 240kV South Bus - GOI Installing pollution monitors  
ALTALINK 12-Apr-17 08:00 13-Apr-17 18:00 1.42 Days
Continuous		 L674s725E (725L) Leth Open - Info City Of Lethbridge L674s725E Breaker Maintenance  
EPCOR 17-Apr-17 07:00 17-Apr-17 17:00 10 Hours
Continuous		 711L - Inland Line Maintenance & Upgrades  
ATCO 17-Apr-17 13:00 20-Apr-17 17:00 3.17 Days
Continuous		 7L90 replace poles for road crossing  
EPCOR 18-Apr-17 07:00 28-Apr-17 17:00 10.42 Days
Continuous		 P2406 BF Protection and a 1044L Line Outage @ Jasper S/S and Petrolia S/S Performing Breaker op-checks as part of relay maintenance and repairs to P2406 BF relay.  
ALTALINK 18-Apr-17 12:30 29-Apr-17 17:30 11.21 Days
Continuous		 42s T1(Tx 18508) - GOI Bushing replacements & doble testing  
ATCO 19-Apr-17 08:00 19-Apr-17 16:00 8 Hours
Continuous		 Irish Creek_S-Telecom,Bonnyville_S-Telecom Teleprotection cct Bonnyville to Irish Creek, 7L53 CH A/B require to be moved to a new telecom multiplex one channel at a time. This will require a short 5-10 min outage to the teleprotection cct for cable connections and testing.  
ATCO 19-Apr-17 10:00 19-Apr-17 14:00 4 Hours
Continuous		 Bonnyville_S-Telecom,Lindbergh_S-Telecom 7L53 TPR CHC (TPR-EE-060) and 7L53 IRAS (TPR-FF143) Bonnyville and Lindbergh ccts are to moved over to a new telecom multiplex. This will require short outages (<10 min each) to each teleprotection ccts for cable connections and testing. Anti-islanding IRAS Bville and Irish Ck channels have no redundancy and both are required in service to properly operate, thus IRAS will be OOS for approx 20 min total. Pengrowth DG at 969s will be separated from the grid or offline.  
ATCO 20-Apr-17 08:00 20-Apr-17 16:00 8 Hours
Continuous		 Bonnyville_S-Telecom,BearTrap_S-Telecom,700S 7L24 Protection Relay Teleprotection cct Bonneville to Beartrap , TPR-EE-127 on line 7L24 to be moved over to new telecom multiplex. This will require a short outage (<10 minutes) to the teleprotection cct for cable connections and testing.  
ATCO 20-Apr-17 08:00 20-Apr-17 16:00 8 Hours
Continuous		 Bourque_S-Telecom,Bonnyville_S-Telecom Teleprotection ccts 0n 7L146A and B from Bonnyville to Bourque lake require to be moved over to new telecom mux system. TPR-FF-101/102 one cct at a time. This will require short 5-10 min outages for cable moves and cct testing.  
EPCOR 22-Apr-17 07:00 23-Apr-17 17:00 1.42 Days
Continuous		 711L - Inland Line Maintenance & Upgrades  
EPCOR 23-Apr-17 04:00 23-Apr-17 10:00 6 Hours
Continuous		 240kV Tx3 Outage @ Lambton S/S Performing Relay Op-Checks as part of relay maintenance.  
ALTALINK 23-Apr-17 13:00 01-May-17 17:00 8.17 Days
Continuous		 38s T4,240kV Bus 2 & 138kV Bus 3 GOI Replace T4, replace 38s1, replace insulators on 138kV bus 3 & 240kV bus 2  
ALTALINK 24-Apr-17 07:00 24-Apr-17 07:15 15 Mins
Daily		 1059L (E803s-E52s-38s) EPCOR - De-energi EPCOR requires 1059L de-energized to facilitate opening E52sEDS1  
ATCO 24-Apr-17 07:00 24-Apr-17 12:00 5 Hours
Continuous		 7L73,730S 703 704 Breaker fail testing, Boucher Ck radial fed from 800s.  
ALTALINK 24-Apr-17 07:00 27-Apr-17 17:00 3.42 Days
Continuous		 89s T2(TX18727,TX18728,TX18733) - GOI SCADA Equipment Upgrade  
EPCOR 24-Apr-17 07:00 28-Apr-17 17:00 4.42 Days
Continuous		 TX1 @ East industrial Doble  
ALTALINK 24-Apr-17 09:30 27-Apr-17 17:30 3.33 Days
Continuous		 900L (17s - 63s) - GOI Component Replacements  
ATCO 25-Apr-17 08:00 29-Apr-17 12:00 4.17 Days
Continuous		 930S Synchronous Condenser Sync Condenser turnaround, unavailable for dispatch  
ALTALINK 26-Apr-17 07:30 26-Apr-17 17:30 10 Hours
Daily		 523s880 (880L) GOI Wire & test trip relay for future station expansion project  
ALTALINK 28-Apr-17 08:00 11-May-17 17:00 13.38 Days
Continuous		 693L/916L GOI [SWCRR] - Placeholder SWCRR: Foundation work for future U/G Riser structures  
ALTALINK 28-Apr-17 09:30 26-May-17 17:30 28.33 Days
Continuous		 777L (48s - 245s) - GOI Relocate Structures AB-BC
ALTALINK 28-Apr-17 16:45 28-Apr-17 17:00 15 Mins
Daily		 1059L (E803s-E52s-38s) EPCOR - De-energi EPCOR requires 1059L de-energized to facilitate closing E52sEDS1  
EPCOR 01-May-17 07:00 05-May-17 17:00 4.42 Days
Daily		 1045L Line Outage @ Jasper S/S and 310P Sundance S/S Performing Breaker op-checks as part of relay maintenance and cutover over new line metering.  
EPCOR 01-May-17 07:00 05-May-17 17:00 4.42 Days
Continuous		 TX4 @ Jasper CVT replacements  
ALTALINK 01-May-17 07:30 02-May-17 17:30 1.42 Days
Continuous		 1061L (12s - 681s) - GOI Damper Replacements, QA/QC checks  
ALTALINK 01-May-17 07:30 04-May-17 17:30 3.42 Days
Continuous		 807AL/807L (410s - 233s - I_402s) - GOI Damper Replacements  
EPCOR 02-May-17 07:00 02-May-17 17:00 10 Hours
Continuous		 Tx4 and Tx2 outages @ Cloverbar S/S Performing Breaker op-checks as part of relay maintenance.  
ENMAX 02-May-17 08:00 05-May-17 16:00 3.33 Days
Continuous		 65.1TR. 65s 138KV South Bus 54.81 line energization  
ATCO 02-May-17 11:00 19-May-17 13:00 17.08 Days
Continuous		 853S 702T 853S 702T TRANSFORMER CLASS2 MAJOR TESTING

702T Oil reclaiming, 702T major testing; 502VR major testing

Load will be carried by 701T and 501VR

ON MAY 10 2017 (08:30 to 17:00) EXPAND THE 702T GOI TO INCLUDE 700D1; 7L113D2; 700PT2X1; 700PT2X2; 700PT2Y

7L113 open ended, all load still on 701T

at the end of the day on May 10 the GOI will shrink back down to the original points		  
ALTALINK 03-May-17 07:30 04-May-17 17:30 1.42 Days
Continuous		 942L (71s - 681s) - GOI Damper Replacements  
EPCOR 03-May-17 08:00 03-May-17 14:00 6 Hours
Continuous		 915L outage @ Cloverbar S/S and 38s S/S Performing Breaker op-checks as part of relay maintenance.  
ATCO 05-May-17 07:00 09-May-17 17:00 4.42 Days
Continuous		 7L62 Reroute line into new Keg River substation, modify 7L62D3 from DLO to LS/LD
Work Sequence
May 4 PM
- transfer 5L457 to adjacent sub
May 5 AM
- Issue GOI 2-33607A (Isol. pts - 702A, 7L62D2, 7L62PTX @ 789s, 7L62D4, 701TD1 @ 797s)
- line work, modify 7L62D3
- Plains Midstream outage reqd
May 5 PM
- Collapse GOI to 7L62D3 @ 797s
- issue 2-33607B, then release 2-33607A
- re-energize 797s
May 6 AM
- restore 5L457 external load transfer to normal
May 5 PM - May 9 PM
- continue 7L62 line reroute into 789s		  
ALTALINK 05-May-17 07:30 14-May-17 17:30 9.42 Days
Continuous		 1054L (12s - 13s) - GOI Damper Replacements  
ALTALINK 07-May-17 13:00 18-May-17 17:00 11.17 Days
Continuous		 42s T2 GOI Doble test and MR maintenance  
ALTALINK 08-May-17 07:00 08-May-17 07:15 15 Mins
Daily		 908L (89s-E52s-38s) EPCOR - De-energize EPCOR requires 908L de-energized to facilitate opening E52sEDS2  
EPCOR 08-May-17 07:00 12-May-17 17:00 4.42 Days
Daily		 1098L Line Outage @ Jasper S/S and Poundmaker S/S Cutover over new line metering.  
EPCOR 08-May-17 07:00 12-May-17 17:00 4.42 Days
Continuous		 TX2 @ Poundmaker Doble  
EPCOR 08-May-17 07:00 12-May-17 17:00 4.42 Days
Continuous		 915L @ Cloverbar -East Edmonton CT replacements  
EPCOR 08-May-17 07:00 12-May-17 17:00 4.42 Days
Continuous		 TX2 @ East Industrial Doble  
EPCOR 08-May-17 07:00 23-May-17 17:00 15.42 Days
Daily		 CV5 @ Castledowns to Victoria Inspection and repair  
ALTALINK 08-May-17 11:00 11-May-17 17:00 3.25 Days
Continuous		 910L (89s - 288s) - GOI SCADA Equipment Upgrade  
ENMAX 09-May-17 08:00 09-May-17 16:00 8 Hours
Continuous		 918L Doble PT 918  
ATCO 09-May-17 09:30 11-May-17 16:00 2.27 Days
Continuous		 749S 703,749S 704 749S 7L33 Sync Bypass Demo / Maint Sw Removal

Remove Sync Circuit bypass switches and Maintenance Switch

CG&E to be fed radially from 845S		  
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  
EPCOR 12-May-17 07:00 12-May-17 17:00 10 Hours
Continuous		 Bus 2 CVT @ Poundmaker Doble  
EPCOR 12-May-17 07:00 12-May-17 17:00 10 Hours
Continuous		 908L East Industrial - Ellerslie Doble  
ALTALINK 12-May-17 07:00 12-May-17 17:00 10 Hours
Daily		 908L (89s-E52s-38s) EPCOR - Advice EPCOR to Doble 908L  
ENMAX 13-May-17 08:00 24-May-17 16:00 11.33 Days
Continuous		 28.80L. 28s & Sarcee 138KV Bus Differential Protection Line Protection Upgrade  
EPCOR 15-May-17 07:00 19-May-17 17:00 4.42 Days
Continuous		 TX3 @ Poundmaker Doble  
ALTALINK 15-May-17 11:00 18-May-17 17:00 3.25 Days
Continuous		 914L (89s - 86s) - GOI SCADA Equipment Upgrade  
ATCO 16-May-17 08:00 18-May-17 15:00 2.29 Days
Continuous		 7L81,791S 702 Install new 7L81 RASA & RASB  
ENMAX 17-May-17 08:00 18-May-17 16:00 1.33 Days
Continuous		 833L. 12B138-833 HV Breaker Inspection, Doble 12B138-833.  
EPCOR 19-May-17 07:00 19-May-17 17:00 10 Hours
Continuous		 Bus 1 CVT @ Poundmaker Doble  
ALTALINK 22-May-17 08:30 22-May-17 12:30 4 Hours
Daily		 648s29 (T3 & 954L) - Advice Trip testing required for 648s749E protection replacement  
EPCOR 23-May-17 07:00 23-May-17 17:00 10 Hours
Continuous		 930L Poundmaker to North Calder Doble  
ALTALINK 23-May-17 07:00 25-May-17 17:00 2.42 Days
Continuous		 89s1352,89s1452 - GOI SCADA Equipment Upgrade  
ENMAX 23-May-17 08:00 04-Jun-17 16:00 12.33 Days
Continuous		 30.81L (SWCRR)-Temporary tie in to 35 Sub. Energization of HV switchgear at 35 sub through 30.81  
ALTALINK 23-May-17 09:30 25-May-17 17:30 2.33 Days
Continuous		 526AL (638s-526L367-526L220) - GOI Line maintenance  
EPCOR 24-May-17 07:00 24-May-17 17:00 10 Hours
Continuous		 1098L Poundmaker to Jasper Doble  
ATCO 24-May-17 09:00 25-May-17 17:00 1.33 Days
Continuous		 813S SVC SVC maintenance, SVC not available for dispatch  
EPCOR 29-May-17 07:00 02-Jun-17 17:00 4.42 Days
Continuous		 TX1 @ Petrolia Doble  
ENMAX 29-May-17 08:00 09-Jun-17 16:00 11.33 Days
Continuous		 24.83L. 24s & 74s 138KV Bus Differential Protection Line Protection Upgrade on 24.83L  
EPCOR 02-Jun-17 07:00 02-Jun-17 17:00 10 Hours
Continuous		 TX1 CVT @ Petrolia Doble  
EPCOR 05-Jun-17 07:00 06-Jun-17 17:00 1.42 Days
Continuous		 P2401 @ Petrolia Doble  
EPCOR 07-Jun-17 07:00 08-Jun-17 17:00 1.42 Days
Continuous		 P2402 @ Petrolia Doble  
ENMAX 08-Jun-17 08:00 08-Jun-17 16:00 8 Hours
Continuous		 24.83L. 24B138-24.83 Doble breaker  
EPCOR 09-Jun-17 07:00 09-Jun-17 17:00 10 Hours
Continuous		 1043L CVT @ Petrolia - Doble  
EPCOR 09-Jun-17 07:00 21-Jun-17 17:00 12.42 Days
Continuous		 1055L ( Argyll - Petrolia ) Steel Pole Refurbishment  
EPCOR 12-Jun-17 07:00 13-Jun-17 17:00 1.42 Days
Continuous		 P2403 BKR @ Petrolia Doble  
EPCOR 14-Jun-17 07:00 15-Jun-17 17:00 1.42 Days
Continuous		 P2406 BKR @ Petrolia Doble  
ATCO 14-Jun-17 08:00 14-Jun-17 16:30 8.5 Hours
Continuous		 7L27 (834s Wesley Creek - A793s West Peace River),793S 705 793S 705 BREAKER SF6 HGF PARTIAL TESTING

7L27 Open ended for the duration of the work		  
ALTALINK 17-Jun-17 07:00 08-Jul-17 17:00 21.42 Days
Continuous		 928L (17s-42s) GOI [SWCRR] SWCRR Line relocate: Set structures and string  
ALTALINK 17-Jun-17 07:00 08-Jul-17 17:00 21.42 Days
Continuous		 906L (17s-42s) GOI [SWCRR] SWCRR String new alignment  
EPCOR 19-Jun-17 07:00 20-Jun-17 17:00 1.42 Days
Continuous		 P2405 BKR @ Petrolia Doble  
EPCOR 21-Jun-17 07:00 23-Jun-17 17:00 2.42 Days
Continuous		 TX2 @ Petrolia Maint  
EPCOR 22-Jun-17 07:00 06-Jul-17 17:00 14.42 Days
Continuous		 1056L ( Argyll - Bellamy ) Steel Pole Refurbishment  
EPCOR 26-Jun-17 07:00 26-Jun-17 17:00 10 Hours
Continuous		 TX2 @ Cloverbar Maint  
EPCOR 26-Jun-17 07:00 30-Jun-17 17:00 4.42 Days
Continuous		 P2404 BKR @ Petrolia Maint  
EPCOR 27-Jun-17 07:00 27-Jun-17 17:00 10 Hours
Continuous		 TX3 @ Cloverbar Maint  
EPCOR 28-Jun-17 07:00 28-Jun-17 17:00 10 Hours
Continuous		 TX4 @ Cloverbar Maint  
EPCOR 03-Jul-17 07:00 07-Jul-17 17:00 4.42 Days
Continuous		 J2406 @ Jasper Maint  
ALTALINK 04-Jul-17 08:00 04-Jul-17 12:00 4 Hours
Daily		 252s (704L/7L50) - GOI Cut Open Point A into 704L-10. Open Point A needed to isolate 252s2 for breaker replacement later on.  
EPCOR 05-Jul-17 07:00 07-Jul-17 17:00 2.42 Days
Continuous		 TX3 @ Poundmaker Tapchanger maint  
EPCOR 07-Jul-17 07:00 08-Jul-17 17:00 1.42 Days
Continuous		 TX1 @ Genesee Tapchanger maint  
EPCOR 07-Jul-17 07:00 19-Jul-17 17:00 12.42 Days
Continuous		 1044L ( Jasper - Petrolia ) Steel Pole Refurbishment  
EPCOR 09-Jul-17 07:00 09-Jul-17 17:00 10 Hours
Continuous		 TX2 @ Genesee Tapchanger maint  
EPCOR 10-Jul-17 07:00 14-Jul-17 17:00 4.42 Days
Continuous		 J2405 @ Jasper Maint  
ALTALINK 10-Jul-17 12:15 21-Jul-17 16:15 11.17 Days
Continuous		 163s T2 (Tx18482) GOI Replace 163s T2 Bushings, T2 Maintenance  
ALTALINK 11-Jul-17 07:30 16-Jul-17 17:30 5.42 Days
Continuous		 39s T1(Tx 18107) - GOI Replacing bushings  
ALTALINK 14-Jul-17 10:00 14-Jul-17 13:00 3 Hours
Daily		 252s (704L/7L50) - GOI Close Open Point C To 704L-10.  
EPCOR 16-Jul-17 07:00 18-Jul-17 17:00 2.42 Days
Continuous		 TX1 @ Cloverbar Tapchanger maint  
EPCOR 17-Jul-17 07:00 21-Jul-17 17:00 4.42 Days
Continuous		 J2401 @ Jasper Maint  
ALTALINK 17-Jul-17 07:30 21-Jul-17 12:30 4.21 Days
Continuous		 39s T2(Tx 5778) - GOI Replacing bushings  
EPCOR 24-Jul-17 07:00 28-Jul-17 17:00 4.42 Days
Continuous		 J2408 @ Jasper Maint  
ALTALINK 26-Jul-17 09:00 26-Jul-17 13:00 4 Hours
Daily		 I_485s Telecom 1041/1036L De-energized The MW radio between 120S Picture Butte and 554S Travers requires firmware upgrade to avoid unplanned outage. This outage requires 1041L and 1036L to be opened AT THE SAME TIME for three hours, up to four for contingencies. Upgrade required in order to avoid any unplanned breakdown or malfunction of the system.  
SUNCOR 02-Aug-17 08:00 08-Aug-17 20:00 6.5 Days
Continuous		 29PL9-13 (29EDD-34 - 29EDD-65) maintenance from 29PS-216 to 29PS-201  
SUNCOR 09-Aug-17 08:00 15-Aug-17 20:00 6.5 Days
Continuous		 29PL9-12 (29EDD-34 - 29EDD-65) 5 YR maintenance - from 29PS220 to 29PS-63 SLD - SL30-P-141-106 & SL30-P141-109  
ATCO 15-Aug-17 08:00 17-Aug-17 16:00 2.33 Days
Continuous		 826S 901T Routine Maintenance on 901T, 902T will remain in service, 502R 20 MVAR reactor unavailable for dispatch  
ENMAX 21-Aug-17 08:00 21-Aug-17 16:00 8 Hours
Continuous		 30.81L (SWCRR)-30.81 decomissioned  
ATCO 22-Aug-17 08:00 24-Aug-17 16:00 2.33 Days
Continuous		 826S 902T Routine Maintenance on 902T, 901T will remain in service, 503R, 504R 20 MVAR reactors unavailable for dispatch, Stn service will be on 5L263 alternate source  
ALTALINK 24-Aug-17 07:00 01-Oct-17 17:00 38.42 Days
Continuous		 916L (42s-5s) GOI [SWCRR] SWCRR Line construction  
ALTALINK 24-Aug-17 07:00 01-Oct-17 17:00 38.42 Days
Continuous		 693L (42s-C10s) GOI [SWCRR] SWCRR Line construction  
SUNCOR 04-Sep-17 08:00 22-Sep-17 20:00 18.5 Days
Continuous		 29EDD-3 29PT-6 oil leak repairs  
ALTALINK 10-Sep-17 07:30 30-Sep-17 17:30 20.42 Days
Continuous		 62s202 (202L) - GOI Upgrading protections  
ALTALINK 11-Sep-17 11:00 22-Sep-17 15:00 11.17 Days
Continuous		 74s T2 GOI Fix oil leaks on T2 Tx 18571  
ALTALINK 01-Oct-17 07:30 22-Oct-17 17:30 21.42 Days
Continuous		 62s201 (801L) - GOI Upgrading protections  
ALTALINK 05-Oct-17 08:00 03-Nov-17 17:00 29.38 Days
Continuous		 910L (89s-288s) GOI [SWEATD] 910L reconfig @ 289s  
ALTALINK 05-Oct-17 08:00 03-Nov-17 17:00 29.38 Days
Continuous		 914L (89s-86s) GOI [SWEATD] 914L reconfig @ 289s  
ATCO 16-Oct-17 07:00 29-Oct-17 18:00 13.46 Days
Continuous		 840S CONVERTER McNeill 2017 Fall turn around. Site shut down for maint. work. AB-SK
ALTALINK 13-Nov-17 10:00 16-Nov-17 17:00 3.29 Days
Continuous		 63s (912L - A732s) - GOI Replace A and B Line Protection  
ALTALINK 14-Nov-17 08:00 25-Nov-17 17:00 11.38 Days
Continuous		 1043L (320p-E816s) GOI [SWEATD] 1043L reconfig  
ATCO 27-Nov-17 07:00 30-Nov-17 17:30 3.44 Days
Continuous		 9L01 9L01 Install piles for new structures for Thickwood tap.  
ATCO 02-Feb-18 07:00 09-Feb-18 17:30 7.44 Days
Continuous		 9L07 Install 9L07 cut in structures for new 951S Thickwood Hills substation.  
ATCO 09-Feb-18 07:00 11-Feb-18 17:30 2.44 Days
Continuous		 9L07(1) 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 27-Feb-18 07:00 04-Mar-18 18:00 5.46 Days
Continuous		 7L22 Build junction for new in and out POD 2030S Hughes  
ALTALINK 06-Jun-18 07:00 09-Jul-18 17:00 33.42 Days
Continuous		 RATD 929L(74s-63s) GOI Cut in 929L in and out from 287s (287s-63s)  
ALTALINK 06-Jun-18 08:00 09-Jul-18 17:00 33.38 Days
Continuous		 RATD 925L(74s-63s) GOI install foundations for Hazelwood line in/out  
ATCO 10-Sep-18 09:00 14-Sep-18 17:00 4.33 Days
Continuous		 801S 901T 801S Anderson 901T Re-test Sept 10, 2018  
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: 2017-03-02   2:59:41 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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