Intermountain Gas 21 Aug Incident

Idaho PUC Pipeline Safety Inspection Summary
Inspector(s): Ulmer/Russo/Perkins Date(s): 21-Aug-19
Company/Owner: Intermountain Gas Company Unit/OPID: 1 8160
Inspection Type &Time (4 day, 0.5 day) I Total Inspection Days: 3
Standard:F—I Construction:F73 Training: F—] (T)(D)Integrity Management: Incident:
M/M: = Follow-up: OQ: Damage Prevention: D&A:
Inspection Summary
21 Aug 2019: (3.0 Construction)
At 0900 on 21 August we received a call about the smell of gas at 2366 Old Penitentary Road. Arrived
to find that Diamond C Construction had ripped a 2" main PE line in half while excavating/removing an
old culvert. IGC service tech had arrived a short time earlier and pinched off the line. The area had been
cordoned off and personnel evacuated from the immediate area. We did our initial assessment of the
cause of the dig-in and it was observed that Diamond C Construction personnel had potholed to locate
the line and knew the approximate depth but had not followed Idaho Dig Line laws and were digging
within inches of a live gas line with excavation equipment, additionally they were digging across the top
of the line. We also found that the line locate marks were within 2' tolerence. IGC repair crew arrived at
approximately 0930 and assessed the repair procedures needed to put the line back in service. IGC
personnel completed excavating the line and intalled Metfit repair couplings and did a 1 hour pressure
test. At that point IGC service tech performed testing of the gas and putting the line back in service.
Attachments:
Misc photos of the dig-in site are contained in the file.
OQ's for all observed employees are located in file for the project.
Corrective Action Required: Follow-up Required: Yes No X
YesF1No X by(date):
Inspector (Lead): Date: 19
Bruce Perkins 41 Z/f}v //
Reviewer: 21ZId Z,& Date:
44 �u ,"did
IPUC Form 1