DAQ-2025-000037

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Huntington Power Plant
8 miles west of Huntington, Utah on Hwy. 3l
P.O. Box 680
Huntington, Utah 84528
November 12,2024
Mr. Bryce Bird, Director
Utah Department of Environmental Quality
Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake City, UT 841144820
DLTAIIIMLNI OF
ENVIHONMENIAL QUALIIY
NO\/ 2 0 2024
DIVISION OF AIR OUALITY
RE: Outage Notification, Unit 2, Huntington Power Plant (Title V Permit #1501001 005)
Dear Mr. Bird:
As required by ll.B.1.f.3c of the Huntington Plant Title V operating permit, the purpose of this letter is to inform you of
a boiler unit outage at the PacifiCorp, Huntington Power Plant. Boiler Unit 2 tripped suddenly due to drum level
pressure al 12'.48 AM on Friday, November 8th. The situation was resolved, and stable operation achieved, at 5:07
AM on November 8th, 2024.
Please see the attached Maintenance Outage Report for details.
I am authorized to make this submission on behalf of the owners and operators of the affecled source or affected
units for which the submission is made. I certify under penalg of law that I have personally examined, and am
familiar with, the statements and information submitted in this document and all its attachments. Based on my inquiry
of those individuals with primary responsibility for obtaining the information, I certify that the statements and
information are to the best of my knowledge and believe true, accurate, and complete. I am aware that there are
significant penalties for submitting false statements and information, or omitting statements and information, including
the possibility of fine or imprisonment.
For further information on this outage contact Terry Guthrie, Hunter and Huntington Plant Environmental Manager,
at435$8743?4.
Sincerely,
Date: 11112124
Laren Huntsman
Managing Director, Hunter and Huntington Plants
Responsible Official
Enclosure: U2 Maintenance Outage Report - PacifiCorp, Huntington Plant
REVIEWED
Initials JBR Date 1/8/2025
Comp Status Meets
File # 10238 Blue 2
outage with table
cc: Terry Guthrie - Hunter and Huntington Plant Environmental Manager
Scarlet Lewis - Environmential Services - NTO 210
Russ Wllson - Huntington Plant Files
Outage Report, Huntington Plant Boiler Unit #2 Drum Level Trip Dete: lll8l2024
Date Time Descriotion
tr/8/2024 l2:48 AM Unit Tripped due to Drum Level Shut-down
begins
fit8t2024 l2:48 AM BFO Down-time
begins
tt/8/2024 l2:48 AM Stopped producing electricity
tt/8/2024 2:46 AM BFI Start-up begins-
l/8/2024 4:16 AM Started producing electricity
1U8t2024 5:07 AM <10% heat input from fuel oil BFO
tU8/2024 5:02 AM 3 coal mills in service
t1/8/2024 5:07 AM Skble operation (<10% heat input from oil, 3 coal mills in service, baghouse temps
>200 degrees)Start-up ends
BFO - Boiler Fire Out
BFI - Boiler Fire In
All times shown are in Mountain Standard Time.
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_ Ulr"rl-l DFPARTMFM OF-E' :' :/_l8g N.\r-E N ra!_Q ual I TYI -r
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T,IVi.SION OF AIR QIJALITY
Boiler Operating Hours -
UNIT #
Outage Start Date:
Outage End Date:
Outage Description:
Start Date Start Time (BFl)End Date End Time (BFO)
Boiler Opr. Hrs.
Duration (hrs) Daily Tota!
11t8t2024
111812024
0:00
2:46
11t8t2024
't118t2024
0:48
23:59
0.80
21.22
Total:
0.80
21.22
22,0