Northern has scheduled the planned service outages, as described below, that will affect operating capacity within the months of March through October 2019. Please review the Planned Service Outage Summary for detailed information related to each outage, including the impacted allocation group(s) and/or point(s), direction of flow, normal operating capacity, estimated daily operating capacity during the outage and the anticipated impact to primary firm service.
The dates indicated are the anticipated days for the maintenance and modifications to be performed and completed. Northern will provide further updates to this notice if circumstances change. Customers are urged to monitor the Planned Service Outage Summary to access the most current information.
Market Area
East Leg
Allocation Group(s)/Point(s): Waterloo East (Group 773), Earlville East (Group 487), Galena East (Group 463) and Belleville East (Group 488)
Location: Between Ogden, Iowa and Belleville, Wisconsin compressor stations
Project Description: Station maintenance at the Ogden, Waterloo, and Earlville, Iowa; Galena, Illinois; and Belleville, Wisconsin compressor stations. In addition, in-line inspection modifications on the Dubuque to Galena and Galena to ANR-Janesville lines are being completed.
Month(s): April 2019 through June 2019
Direction of Flow: Delivery
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
West Leg
Allocation Group(s)/Point(s): Palmyra North (Group 740)
Location: Northern’s mainline between Hooper and Homer, Nebraska
Project Description: In-line inspection of the Hooper to South Sioux City line.
Month(s): May 2019 through June 2019
Direction of Flow: Delivery
Capacity Impact: Northern does not anticipate primary firm service will be impacted.
Central Mainline
Allocation Group(s)/Point(s): Omaha 1B (POI 1051)
Location: Omaha, Nebraska
Project Description: Pipeline maintenance at the Omaha 1B, Nebraska town border station
Month(s): April 2019
Direction of Flow: Delivery
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
Allocation Group(s)/Point(s): TIGT Milligan (POI 210), Ellsworth Central Delivery (POI 19103), American Energies-Garfield (POI 18270) and Rupe Central Delivery (POI61201)
Location: Palmyra, Nebraska
Project Description: Palmyra, Nebraska compressor station maintenance.
Month(s): June 2019
Direction of Flow: Receipt
Capacity Impact: Primary firm service will not be impacted.
Market/Field Areas Combined
Allocation Group(s)/Point(s): Field to Demarc (Group 831) and Beatrice North (Group 832)
Location: Northern’s mainlines located between the Macksville, Kansas and Oakland, Iowa compressor stations
Project Description: Pipeline maintenance and modifications along the pipelines from the Macksville, Kansas compressor station north to the Clifton, Kansas compressor station (Demarc) in the Field Area, and from Clifton, Kansas to the Oakland, Iowa compressor station in the Market Area.
Month(s): April 2019 through October 2019
Direction of Flow: Delivery
Capacity Impact: Primary firm service will not be impacted.
Field Area
Allocation Group(s)/Point(s): Field to Demarc (Group 831)
Location: Northern’s mainlines located between the Bushton, Kansas compressor station and Tescott, Kansas compressor station
Project Description: Based on analysis of maintenance work completed during 2018 on Northern’s pipelines located between the Bushton, Kansas compressor station and Tescott, Kansas compressor station, Northern is operating the B-line in this area at a reduced pressure until the completion of future B-line planned maintenance, which is anticipated to be in late 2019. In addition, Northern will be conducting pipeline maintenance near the Clifton, Kansas compressor station.
Month(s): March 2019 through October 2019
Direction of Flow: Delivery
Capacity Impact: Primary firm service will not be impacted.
Allocation Group(s)/Point(s): Beaver North (Group 1025) and PEPL Mullinville (POI 173)
Location: Beaver, Oklahoma and Mullinville, Kansas compressor stations
Project Description: Station modifications and an in-line inspection between the Beaver, Oklahoma and Mullinville, Kansas compressor stations
Month(s): March 2019 through October 2019
· Actual outage dates and capacity impacts are dependent upon receipt of the in-line inspection report and will be updated as additional information becomes available
Direction of Flow: Delivery for the group and receipt for the point
Capacity Impact: Primary firm service will not be impacted.
Allocation Group(s)/Point(s): ETC Sunray Plant (POI 58676), Sunray Low (Group 10), Sunray High (Group 32), and Beaver C System (Group 31)
Location: Sunray, Texas compressor station
Project Description: Station maintenance at the Sunray, Texas compressor station
Month(s): April 2019
Direction of Flow: Receipt
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
Allocation Group(s)/Point(s): ETC Hemphill Plant (POI 71394), Superior Hemphill County Plant (POI 79048)
Location: Hemphill County, Texas
Project Description: Station maintenance at ETC Hemphill Plant and pipeline maintenance near Canadian, Texas
Month(s): May 2019
Direction of Flow: Receipt
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
Allocation Group(s)/Point(s): Jal-Hobbs-Plains System (Group 605) and Spraberry to Plains (Group 599)
Location: Plains, Texas compressor station
Project Description: Station maintenance at the Plains, Texas compressor station
Month(s): April 2019
Direction of Flow: Receipt
Capacity Impact: Northern does not anticipate primary firm will be impacted.
Allocation Group(s)/Point(s): Brownfield North (Group 1022), Mitchell to Gaines (Group 825), Spraberry 12-inch (Group 601), and Spraberry Station (Group 602)
Location: Northern’s mainline between Spraberry, Texas and Plainview, Texas compressor stations and at the Brownfield, Texas compressor station
Project Description: Station maintenance at the Spraberry, Plainview, Gaines County, and Brownfield, Texas compressor stations and in-line inspection verification between the Spraberry and Gaines County, Texas compressor stations.
Month(s): April 2019 through May 2019
Direction of Flow: Receipt and Delivery
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
Field Area (continued)
Allocation Group(s)/Point(s): Seminole-Subsystem (Group 598), Oasis Waha (POI 62148)
Location: Pecos County, Texas
Project Description: Pipeline modifications near Oasis Waha
Month(s): May 2019
Direction of Flow: Receipt
Capacity Impact: Northern anticipates primary firm capacity will be impacted.
Please see Operationally Available Capacity on Northern’s website for current flow information and the Field Area Group Allocation Maps and Market Area Group Allocation Maps for a list of impacted points.
If you have any questions, contact your customer service or marketing representative.