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HL Integrity Assurance (formerly IM) Notifications

PHMSA hazardous liquid integrity management and pipeline assessment regulations require operators to submit the notifications listed below:

  • Repair §195.452(h)(1)(i) ...if the operator cannot meet the schedule for evaluation and remediation required under paragraph (h)(3) of this section and cannot provide safety through a temporary reduction in operating pressure...
  • Pressure §195.452(h)(1)(ii) ...when a pressure reduction exceeds 365 days, the operator must notify PHMSA explain the reasons for the delay...
  • Interval §195.452(j)(4)(i) and (ii) ...notify OPS of the justification for a longer interval, and propose an alternative interval...
  • Technology §195.452(j)(5)(iv) operator choosing "other technology" must notify OPS 90 days before conducting the assessment...

Click here to view summary information about notifications submitted by operators.

PHMSA's regulations include two methods for operators to submit notifications.

Operators should provide pertinent information about the reason for the notification and the pipeline system, or systems, relevant to the notification.

Methods for Submittal to PHMSA

By e-mail to:

By mail:

ATTN: Information Resources Manager
East Building, 2nd Floor (PHP-20), E22-321
1200 New Jersey Ave SE
Washington, DC 20590