# Massachusetts Department of Public Utilities — Pipeline Safety Interpretation - **operation:** document - **citation:** PI-93-050 - **title:** Massachusetts Department of Public Utilities — Pipeline Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 1993-08-17 - **effective on:** Not available - **summary:** PI-93-050 response to Massachusetts Department of Public Utilities concerning 192.605. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-050.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-050.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-050 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1993/PI93050.pdf **body:** <<>> August 17, 1993 Mr. Chris Bourne Chairman, New England Pipeline Safety Representatives Massachusetts Department of Public Utilities Saltonstall Building 100 Cambridge Street Boston, MA 02202 Dear Mr. Bourne: Thank you for your letter of July 12, 1993, commenting on the applicability of 49 CFR Part 193 to mobile LNG plants. You asked us to reconsider our position that such plants are covered by Part 193, and to determine instead that they are subject to the operating and maintenance plan requirements of 49 CFR 192.605. You further asked us to comment on a set of draft guidelines intended either as instructions for enforcement of §192.605 or as conditions under state waivers of Part 193. After reviewing the matter once more, we do not believe there is sufficient reason to change our position that mobile LNG plants are covered by 49 CFR Part 193 rather than 49 CFR Part 192. However, we believe the draft guidelines are appropriate to use as conditions under state waivers of Part 193. In fact, as you pointed out, one version of the suggested guidelines is already in effect under a waiver granted by New Hampshire. The guidelines could be used as conditions under a single waiver a state agency might grant all jurisdictional operators who apply for a waiver of Part 193 requirements. Identical letter being sent to Richard Marini and Philip Sher. Sincerely, Cesar De Leon Director, Regulatory Programs Office of Pipeline Safety dal\192.605\93-08-17 - **truncated:** false - **body characters:** 1474