TSP Name: Northwest Pipeline LLC TSP: 67977322
Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 05/15/2025 12:21 PM MCT
Notice Eff D/T: 05/15/2025 12:21 PM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:
Notice ID: 25-069
Prior Notice:
Subject: Chehalis Repairs / Notice of Recall and OFO, Washougal Repairs - Maint. Reminder
Notice Text:
As posted in the maintenance schedule on Northwest Pipeline's website, Northwest is performing maintenance at the following locations:
- Washougal North Constraint beginning gas day May 20, 2025, through gas day May 22, 2025.
- Chehalis CS beginning gas day May 21, 2025, through gas day May 22, 2025. (New Outage)
The Washougal North Constraint will be limited to 196,000 Dth/d northbound for and 511,000 Dth/d southbound for the duration of the outage.
If primary nomination requests through the Washougal North Constraint exceeds the available capacity of 196,000 Dth/d northbound or 511,000 Dth/d southbound (or whatever NWP cannot mitigate during any day of the maintenance), pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in Northwest's Tariff, Northwest will give notice of a Declared Deficiency Period based on a design capacity of 305,000 Dth/d northbound or 521,000 Dth/d southbound. The deficiency period will continue until the work is completed on gas day May 22, 2025.
The Chehalis CS will be limited to 600,000 Dth/d southbound for the duration of the outage.
Effective Gas Day Wednesday, May 21, 2025, and until further notice, Northwest is issuing an OFO Recall Advisory and Operational Flow Order (OFO) southbound through the Chehalis compressor pursuant to Section 14.15(d) of its Tariff.
Under the OFO Recall Advisory, Shippers are required to: (1) recall capacity that is subject to an OFO recall provision; or (2) take other action that is acceptable to Northwest, to satisfy its OFO obligation.
If the southbound primary scheduled quantities exceed Northwest’s design capacity of 672,000 Dth/d at Chehalis Northwest will provide Shippers with their specific OFO obligations by 4:00 p.m. MST. Shippers must comply with their OFO obligations no later than the Evening nomination deadline (5:00 p.m. MST).
If an OFO is necessary for a given Gas Day, Northwest will wait until the Evening scheduling process to provide notice of a Declared Deficiency period and will make deficiency cuts to bring the nomination requests at the Chehalis compressor from the design capacity of 672,000 Dth/d to the operationally available capacity of 600,000 Dth/d. If an OFO is not necessary, but a deficiency period is, Northwest will provide notice of a Declared Deficiency period and will make deficiency cuts in the Timely scheduling process to bring the nomination requests at the Chehalis compressor to the operationally available capacity of 600,000 Dth/d (or whatever NWP cannot mitigate during any day of the unplanned maintenance period), all pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in Northwest's Tariff. The deficiency period will continue until the work is completed.
Please reference the Maintenance Schedule tab at www.northwest.williams.com for more information.
If you have any questions, please call your Commercial Services Representative or the hotline at 713-215-6301.
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