# 255.201 Required capacity of pressure relieving and limiting stations. **Citation:** 16 NYCRR 255.201 **Type / status:** regulation / current **Agency:** New York State Public Service Commission **Effective:** Not stated **Published:** Not stated Transmission and Distribution of Gas. (a) Each pressure-relief or pressure-limiting station or group of stations installed in a low pressure distribution system must have enough capacity, and must be set to operate, to ensure that the pressure may not cause the unsafe operation of any connected and properly adjusted gas utilization equipment. (b) Each pressure-relief or pressure-limiting statio ## Document text (a) Each pressure-relief or pressure-limiting station or group of stations installed in a low pressure distribution system must have enough capacity, and must be set to operate, to ensure that the pressure may not cause the unsafe operation of any connected and properly adjusted gas utilization equipment. (b) Each pressure-relief or pressure-limiting station or group of stations installed in pipelines other than low-pressure distribution systems must have enough capacity, and must be set to operate to limit the pressure according to the following paragraphs: (1) If the maximum allowable operating pressure is 60 psig (414 kPa) or more, the pressure may not exceed the maximum allowable operating pressure plus 10 percent, or the pressure that produces a hoop stress of 75 percent of SMYS, whichever is lower. (2) If the maximum allowable operating pressure is 12 psig (83 kPa) or more, but less than 60 psig (414 kPa), the pressure may not exceed the maximum allowable operating pressure plus 6 psig (41.4 kPa). (3) If the maximum allowable operating pressure is less than 12 psig (83 kPa), the pressure may not exceed the maximum allowable operating pressure plus 50 percent. (c) When more than one pressure-regulating or compressor station feeds into a pipeline, relief valves or other protective devices must be installed at each station to ensure that the complete failure of the largest capacity regulator or compressor, or any single run of lesser capacity regulators or compressors in that station, will not impose pressures on any part of the pipeline or distribution system in excess of those for which it was designed, or against which it was protected, whichever is lower. (d) Relief valves or other pressure-limiting devices must be installed at or near each regulator station in a low-pressure distribution system, with a capacity to limit the maximum pressure in the main to two psig (14 kPa). ## Provenance - Official: Yes - Source: - Source ID: `ny-dps-nycrr` - SHA-256: `4a9334ebf8affeecf84c77e0fee516788c691b0288a5391369c0317b3169ccf2` - Retrieved: 2026-08-12T06:20:40.894Z - Exported: 2026-08-24T21:23:41.307Z - Document slug: `ny-nycrr-255-201` ### 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", "Overpressure Protection" ], "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 255.201", "identityAnomaly": null, "references": [], "region": "NY" } ```