# 255.507 Test requirements for pipelines to operate at less than 125 psig (862 kPa).

**Citation:** 16 NYCRR 255.507  
**Type / status:** regulation / current  
**Agency:** New York State Public Service Commission  
**Effective:** Not stated  
**Published:** Not stated

Transmission and Distribution of Gas. (a) Except for service lines, each segment of a pipeline that is to be operated at less than 125 psig (862 kPa) must be tested in accordance with this section.

(b) The test pressure shall be 90 psig (621 kPa) or 1.5 times the maximum operating pressure whichever is greater; however, the maximum test pressure for plastic pipelines may not be more than two an

## Document text

(a) Except for service lines, each segment of a pipeline that is to be operated at less than 125 psig (862 kPa) must be tested in accordance with this section.

(b) The test pressure shall be 90 psig (621 kPa) or 1.5 times the maximum operating pressure whichever is greater; however, the maximum test pressure for plastic pipelines may not be more than two and a half times the design pressure for the pipe determined under section 255.121 of this Part, at a temperature not less than the pipe temperature during the test. During the test, the temperature of thermoplastic material may not be more than 100°F (38°C), or the temperature at which the material's long-term hydrostatic strength has been determined under the listed specification, whichever is greater.

(c) The test medium shall be water, inert gas or air.

(d) Except as provided in subdivision (f) of this section, the test must be conducted by maintaining the pressure at or above the test pressure for at least one hour after stabilization.

(e) A calibrated pressure gauge that will indicate increments of two psig (14 kPa) or less shall be attached to the test section.

(f) For plastic insertions of less than 1,500 feet (457.2 meters) length, the test duration may be 30 minutes prior to insertion followed by a 30-minute test after insertion and an inspection of all visible portions of the pipe for damage.

## Provenance

- Official: Yes
- Source: <https://govt.westlaw.com/nycrr/Document/I505d3327cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)>
- Source ID: `ny-dps-nycrr`
- SHA-256: `f12f59ab2041a38ef715597de2fc81aed5730c3b1787127b67d9b3bdb2c6088c`
- Retrieved: 2026-08-12T06:20:40.894Z
- Exported: 2026-08-22T23:29:36.247Z
- Document slug: `ny-nycrr-255-507`

### 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",
    "Test Requirements"
  ],
  "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 255.507",
  "identityAnomaly": null,
  "references": [
    {
      "citation": "16 NYCRR 255.121",
      "referenceType": "new-york-administrative-code",
      "url": "https://govt.westlaw.com/nycrr/Document/I505c6fe9cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)"
    }
  ],
  "region": "NY"
}
```