Avista 240813 Distribution IM Implementation - Signed

IPUC Pipeline Safety Audit Inspection
Integrity Management Implementation
IM Implementation S U N/A N/C
1. Have you evaluated the IMP/DIMP plan for new threats?If so,how often?
Provide documentation of newly added threats and when they were added.
Section 6.2 outlines our potential threats.Appendix B(page B-10)outlines our
documentation of our review of potential threats,which we typically review X
quarterly.
See Appendix G for dates that all sub-threats were added for periodic evaluation.
2. Do you have required data on any new pipeline installations for the past 10 years
(or since August 2, 2011)been captured (e.g., location,wall thickness/SDR,
manufacturer,lot/production number) X
Yes.Section 5.5 outlines the data collection process for newly installed pipelines.
3. Have you risk ranked all threats? Provide documentation of your risk ranking. X
Yes. DIMP Appendix B Table 7.4-3 Idaho Risk Ranking of Threats and Sub-Threats
4. Please provide documentation showing you have identified and implemented X
adequate measures to address risks?
5. Do you measure performance, monitor results,and evaluate the effectiveness of
X
the measures used to address risks?
DIMP Appendix F
6. Have you identified and recorded any plastic pipe and components that have
shown issues with defects that contribute to leaks?Is this being recognized as a
threat and mitigated through the IMP/DIMP plan?Provide documentation? X
Yes, in appendix G you can see:
Aldyl-A SCG/LDIW failure,Aldyl-A Service Tees,Aldyl-A Bending Stress at steel
transition tees, Mechanical Joints (specifically Continental fittings),
7. Are low pressure distribution systems included in the DIMP threat analysis? X
N/A—we do not have any low pressure systems
8. Have you evaluated and adjusted the IMP/DIMP plan annually,or when
necessary? X
We adjust our DIMP plan annually.Annual changes can be identified by the
vertical"revision"lines next to any section that was changed from the previous
publication.
9. Are records being retained forthe past 10 years? X
Yes
10. Have you requested to deviate from periodic inspection requirements with X
PHMSA or the State Regulatory Authority?
No
Comments:
Owner/Company:Avista �U C
Operator Representative: Randy K. Bareither
Date:8/13/24 /c��n �Gv2QLQil. o I
Signature:
241PUC (IM Implementation)