Intermountain Gas 220711-14 Pocatello Field

Idaho PUC Pipeline Safety Inspection Summary
Inspector(s): Perkins/Brooks/Galli I Date(s): 11-14 July 2022
Company/Owner: Intermountain Gas Company Unit/OPID: I Pocatello
Inspection Type &Time (1 day, 0.5 day) Total Inspection Days:1 11
Standard:F10.0 Construction:71 Training: (T)(D)Integrity Management: Incident:
M/M: = Follow-up: OQ: Damage Prevention: D&A:
Inspection Summary
Audit consisted of inspecting field installed equipment and operator qualification for the Pocatello, Idaho
inspection unit. Records and procedures for all Idaho Intermountain Gas Units were inspected in March 2022 at
the Intermountain Gas Company (IGC) headquarters in Boise, Idaho.
January 24, 2022: (0.5 Standard Prep)
Prepared IGC Pocatello Field Audit.
July 11-13, 2022: (8.0 Standard, 1.0 OQ)
Traveled to Pocatello and met with IGC company representatives in the Pocatello district office for in-brief,JSA
and to begin field audit.
Regulator Stations 48721-RS-59814, 48721-RS-60092,48721-RS-60076,48721-RS-59067, 48721-RS-59719,
48725-RS-60091,48725-RS-59826,48725-RS-59831, 48725-RS-60052,48725-RS-60082, were inspected for
proper operating parameters, regulator lock-up, relief device operation, cathodic protection pipe-to-soil
readings, pipe-to soil interface wrap protection, station warning signs and right-of-way clearances.
One odorizer reading on regulator station 48725-RS-59831,twelve casing-to-carrier isolation checks, three
cathodic protection rectifiers,ten pipeline patrols, and fifteen emergency isolation valves were checked for
proper operation.
An IPUC Form 3 (exit interview) was performed following the district inspection with Will Lindsey(Pipeline
Safety Specialist) and Phil Colburn (Pocatello Operations Manager) of Intermountain Gas Company.
Observed meter proofing and differential testing on 2 meters: 48717-gp-73516 failed 3 differential tests and
then proof test were performed and successfully passed. Initial test using diffential method failed due to
inconsistent flow; used a prover pump to provide consistent flow to the meter then passed using differential
method. Meter 48725-gp-73754 had 2 differential tests ran and it passed both times.
Observations:
Reg Stations: 48721-RS-60092 primary failed lock-up due to weld slag on diaghragm
48725-RS-60082, Removed old ERX Post on secondary side due to corrosion concerns
Jul 14, 2022: (1.5) Standard)
Traveled back to Boise,completed forms and typed report
IPUC Form 1

Idaho PUC Pipeline Safety Inspection Summary
Attached:
IPUC Form 1, Inspection Summary
IPUC Form 3, Exit Interview
IPUC Field Equipment Status Worksheets
PHMSA Form 15 OQ Field
Pictures of calibration certificates
Corrective Action Required: Yes Na X
Follow-up Required: by(date)---, ,, Yes No X
Inspector (Lead): Date:
Perkins F 14-Jul-22
Reviewer: Date: ql
Brooks (—
7-
/V
IPUC Form 1