# 255.625 Odorization of gas. **Citation:** 16 NYCRR 255.625 **Type / status:** regulation / current **Agency:** New York State Public Service Commission **Effective:** Not stated **Published:** Not stated Transmission and Distribution of Gas. (a) All gas transported in transmission lines, and distribution mains operating at 125 psig (862 kPa) or more, except gas in route to storage fields via a transmission pipeline that transported gas without an odorant from that line before May 5, 1975, is to be adequately odorized in compliance with subdivision (c) of this section so as to render it readily d ## Document text (a) All gas transported in transmission lines, and distribution mains operating at 125 psig (862 kPa) or more, except gas in route to storage fields via a transmission pipeline that transported gas without an odorant from that line before May 5, 1975, is to be adequately odorized in compliance with subdivision (c) of this section so as to render it readily detectable by the public and employees of the operator at all gas concentrations of one fifth of the lower explosive limit and above. (b) All combustible gas transported in distribution lines, except as provided for in subdivision (a) of this section, and service laterals is to be adequately odorized in compliance with subdivision (c) of this section so as to render it readily detectable by the public and employees of the operator at all gas concentrations of one tenth of the lower explosive limit and above. (c) In the concentrations at which it is used, the odorant in combustible gases must comply with the following requirements: (1) The odorant may not be deleterious to persons, materials or pipe. (2) The products of combustion from the odorant may not be toxic when breathed nor may they be corrosive or harmful to those materials to which the products of combustion will be exposed. (3) The odorant may not be soluble in water to an extent greater than 2.5 parts to 100 parts by weight. (d) Odorization equipment must be designed and maintained so as to ensure the required odorant level in the gas under varying conditions. The equipment must be installed so that it does not cause a nuisance to nearby residents by the escape of odorant fumes. (e) Each operator shall establish procedures to conduct periodic sampling of combustible gases to assure the proper concentration of odorant in accordance with this section. An appropriate record of all odorization practices shall be maintained. (f) Every operator shall maintain records setting forth the types of odorizing equipment and odorants used, the ratios of odorant to gas, and the locations of odorization stations. ## Provenance - Official: Yes - Source: - Source ID: `ny-dps-nycrr` - SHA-256: `7266fbeb03d518eb30a1850799dc86264375ad06fc318aafac7b0e81866b24f3` - Retrieved: 2026-08-12T06:20:40.894Z - Exported: 2026-08-24T08:04:23.426Z - Document slug: `ny-nycrr-255-625` ### 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", "Operations" ], "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 255.625", "identityAnomaly": null, "references": [], "region": "NY" } ```