Intermountain Gas 250527-250528 IPUC Form 1 - Nampa Field

IPUC Pipeline Safety Inspection
Inspector(s): Perkins, GaIIi Date(s): 250527-250528
Company/Owner: Intermountain Gas Company Unit/OPID: 08160
Standard: ® ' Training: ❑ TIMP/DIMP: ❑ OQ: ❑
Incident: ❑ Damage Prevention: ❑ Drug &Alcohol: ❑ Inspection Days: 4.5
Inspection Summary
Audit consisted of IPUC inspectors Perkins and Galli inspecting field installed equipment for the Nampa,
Idaho inspection units. The PHMSA IA question set and IGC equipment listing were used as a guide
throughout the audit to ensure all areas were completed/covered.
May 27 & May 28, 2025: (2.0 Standard MG)(2.0 Standard BP))
Met with IGC company representatives in the Nampa district office for in-brief and to begin field audit and
review of OQ records for all personnel taking part in the inspection.
Regulator Stations: 23 regulator stations were inspected for proper operation, 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.
10 casing-to-carrier isolation checks, 5 cathodic protection rectifiers, 6 pipeline patrols, 36
emergency/isolation valves and 27 HPSSs were checked for proper operation, observations listed below.
An exit interview was performed following the district inspection with field personnel of Intermountain
Gas Company and MDU Compliance Manager Colby Lundstrom.
Discrepancies:
IPUC Inspectors observed Regulator Station 48371-RS-59980 fail the lock up test on the primary regulator
due to oil and metal shavings. This is the second failure in two consecutive years during an IPUC audit.
Pipeline Patrols: 48317-PP-14081, 48317-PP-14115 were found with vegetation around the pipe.
48317-PP-14098 needs to be painted and rewrapped. Work orders were created.
Valves: IPUC Inspectors identified that valves 48317-VLV-32633, 48317-VLV-32638, and 48317-VLV-
32840, classified as "one-man"valves, required two valve technicians for operation. However, these valves
were not designated as "two-man"valves in Maximo. Prior to operation, sealant was not injected, nor were
the valves flushed or cleaned,despite requiring significant force and the assistance of two technicians. These
actions were not in compliance with OPS 703 Section 9.1.6.
IPUC Form 1 Rev. 12/11/2024

IPUC Pipeline Safety Inspection
It was confirmed through IGC Compliance Personnel that the valve technicians reported the inoperable
emergency valves (48317-VLV-32633, 48317-VLV-32638 and 48317-VLV-32840) within the required
timeframc as stated in OPS 703 Section 4.1.1. OPS Section 4.1.2 was not followed. An ENGMOC was not
created within one business day of notification. Per IGC Compliance Personnel, the valves were designed
"two-man"valves in Maximo and an ENGMOC was created on May 29, 2025.
Completed and attached audit forms: PHMSA IA question set with OQ protocol 9, IPUC Form 1, Post-
Inspection Preliminary Written Findings and attached inspection documents.
June 3, 2025: (0.5 Standard/Compliance)
Inspector Galli wrote NOPV I202504 for the above listed discrepancies.
Corrective Action Required: ® Yes ❑ No Compliance Letter#: I202504
Follow Up Required: ® Yes ❑ No By Date: July 17, 2025
Lead Inspector: Galli Date: Reviewer: Brooks Date:
250617
Signature: Signature: G"
IPUC Form I Rev. 12/11/2024