# National Grid — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-22-0014
- **title:** National Grid — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2025-02-11
- **effective on:** Not available
- **summary:** PI-22-0014 response to National Grid concerning 192.517, 192.624.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-22-0014.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-22-0014.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-22-0014
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2025-10/National-Grid-PI-22-0014-10-05-2022-Parts192.517-and-192.624-WITHDRAWAL.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
February 11, 2025
Mr. Michael Kern
Director, Gas Transmission Engineering and Design
National Grid
25 Hub Drive
Melville, NY 11747
Re: Withdrawal of Interpretation Letter PI-22-0014
Dear Mr. Kern:
On October 5, 2022, PHMSA responded to your request for an interpretation of the federal
pipeline safety regulations in 49 Code of Federal Regulations (CFR) part 192 with respect to the
traceable, verifiable, and complete (TVC) documentation requirements at §§ 192.517(a) and
192.624(a) for onshore steel gas transmission pipelines. This letter is to inform you that PHMSA
has withdrawn that response to further consider the matter. PHMSA will provide further
information upon completion of its review.
If we can be of further assistance, please contact Joseph Berry at 720-601-3577.
Sincerely,
John A. Gale
Director, Office of Standards
and Rulemaking
- **truncated:** false
- **body characters:** 1000