Chehalis Unit 2 Solar Repairs / Notice of Recall and OFO

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 10/28/2025 2:45 PM MCT
Notice Eff D/T: 10/28/2025 2:45 PM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:

Notice ID: 25-203
Prior Notice:
Subject: Chehalis Unit 2 Solar Repairs / Notice of Recall and OFO

Notice Text:

As referenced in Notice ID’s 25-190 and 25-197, an additional

outage for Chehalis Unit 2 would need to be scheduled to

complete the Solar repairs. This new outage has now been

scheduled beginning Gas Day November 03, 2025, through Gas Day

November 14, 2025.

 

The available capacity through the Chehalis CS will be limited

to 490,000 Dth/d southbound beginning Gas Day November 03,

2025, through Gas Day November 12, 2025, as the repairs are

being made.

 

The available capacity through the Chehalis CS will be limited

to the design of 672,000 Dth/d southbound beginning Gas Day

November 13, 2025, through Gas Day November 14, 2025, for

testing of the unit.

 

Additionally, effective Gas Day November 03, 2025, through the

end of the outage, 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

to bring the station down to design of 672,000 Dth/d

southbound.

 

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 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 and deficiency 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 490,000 Dth/d

southbound. 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 posted operationally available capacity of

490,000 Dth/d southbound (or whatever NWP cannot mitigate

during any day of this planned 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.

 

Shippers can monitor throughput quantities and obtain a copy of

Northwest’s OFO procedures on Northwest’s website at

www.northwest.williams.com.

 

If you have any questions, please contact your Commercial

Services Representative or the hotline at 713-215-6301.