# 255.552 Notification requirements. **Citation:** 16 NYCRR 255.552 **Type / status:** regulation / current **Agency:** New York State Public Service Commission **Effective:** Not stated **Published:** Not stated Transmission and Distribution of Gas. (a) The maximum allowable operating pressure of any transmission line, or main operating at a pressure of 125 psig (862 kPa) or above, shall not be raised or lowered without submitting a letter of intent at least 60 days prior to any proposed change of said certified operating pressure. Where the letter of intent indicates a decrease in the maximum allowable ## Document text (a) The maximum allowable operating pressure of any transmission line, or main operating at a pressure of 125 psig (862 kPa) or above, shall not be raised or lowered without submitting a letter of intent at least 60 days prior to any proposed change of said certified operating pressure. Where the letter of intent indicates a decrease in the maximum allowable operating pressure, a statement of explanation is to be included. All procedures involved in the recertification project shall be in accordance with these requirements. In the event of an emergency, verbal permission may be obtained, but the written application must be filed promptly. (b) In addition, any operator proposing to increase the maximum allowable operating pressure of a pipeline which was originally constructed to operate at a pressure of less than 125 psig (862 kPa) to a pressure of 125 psig (862 kPa) or more shall comply with the reporting requirement of subdivision (a) of this section. If the increase in pressure is proposed within three years of the initial operation of a pipeline which, at the higher pressure proposed, would fall within the definition of major utility transmission facility as set forth in section 120(2) of the Public Service Law, a hearing will be held on the proposed increase, unless such hearing is waived by the commission on the application of staff of the department. In addition with respect to any such increase, the operator shall, in addition to the reporting requirements set forth above, provide in writing to staff the basis of the need for the increase, a discussion of how the increase will serve the public interest, convenience and necessity, and such assurance as staff may require, including documentation, that no undue hazard will result from operation of the line at the higher pressure. (c) At least 60 days prior to increasing the maximum allowable operating pressure of a distribution system above the limits set below, the operator shall submit a letter of intent. In the event of an emergency, verbal permission may be obtained, but the written notification must be filed promptly. (1) If the maximum allowable operating pressure is between ½ psig (3.4 kPa) and 60 psig (414 kPa), notice is required for an increase in pressure greater than six psig (41.4 kPa). (2) If the maximum allowable operating pressure is between 60 psig (414 kPa) and 124 psig (855 kPa), notice is required for an increase in pressure greater than 10 percent of the maximum allowable operating pressure. (3) Converting a low pressure distribution system to a high-pressure system not to exceed 124 psig (855 kPa). ## Provenance - Official: Yes - Source: - Source ID: `ny-dps-nycrr` - SHA-256: `4f7828aaef0a0b24ad905e018643cbb09be6139099415637a1235c7752c732df` - Retrieved: 2026-08-12T06:20:40.894Z - Exported: 2026-08-23T19:20:45.226Z - Document slug: `ny-nycrr-255-552` ### Source metadata ```json { "jurisdiction": "US-NY", "title": 16, "part": "255", "partTitle": "Transmission and Distribution of Gas", "scopeKind": "gas-pipeline-safety", "tocPath": [ "Part 255 Transmission and Distribution of Gas", "Upgrading/Conversion" ], "legalScope": "Complete current terminal legal unit exposed by the DPS-designated Title 16 NYCRR pipeline-safety part inventory.", "applicabilityCaveat": "Applicability depends on the part and section, Commission jurisdiction, commodity and facility type, intrastate or interstate status, operator and activity, exemptions, waivers, federal preemption, Commission orders, and incorporated law. DPS inspects portions of interstate systems for PHMSA, but PHMSA retains federal enforcement authority. DPS states that all jurisdictional Part 256 gas-holder and Part 257 LPG-plant facilities have been decommissioned even though those regulations remain unrepealed.", "incorporationCaveat": "These parts incorporate or rely on federal pipeline regulations, federal and New York statutes, Commission rules and orders, and privately authored technical standards. Part 10 supplies incorporation details. References metadata preserves explicit citations but does not reproduce external material, determine licensing rights, or decide whether a particular incorporation is static or dynamic.", "publicationCaveat": "The New York Department of Public Service identifies these eleven Title 16 NYCRR parts as its state pipeline-safety regulations and links to the public DOS/Westlaw NYCRR reading copy. That site labels the online text unofficial and directs users needing evidentiary accuracy to the Official NYCRR maintained by the Department of State Division of Administrative Rules. Each section's 'Current through' date is the most recent official NYCRR supplement covering that section, not a uniform corpus-wide amendment date.", "rights": "New York government-edict text is preserved with DPS, Department of State, and publisher attribution. The public reading site's presentation and enhancements, agency marks, forms, annotations, and incorporated federal or privately authored standards require separate rights review; this connector does not claim rights in those materials.", "rightsReviewRequired": true, "currentThrough": "2024-05-31", "historyEvents": "No event is emitted because the section reading copy does not supply an explicit adoption, filing, or effective-date history.", "publisherCitation": "16 CRR-NY 255.552", "identityAnomaly": null, "references": [], "region": "NY" } ```