# Acceptable Standards **Citation:** COMAR 20.55.02.02 **Type / status:** regulation / current **Agency:** Maryland Public Service Commission **Effective:** Not stated **Published:** Not stated Maryland pipeline-safety provision COMAR 20.55.02.02, Acceptable Standards. ## Document text A. In addition to the regulations found in this chapter, each utility or gas master meter operator shall comply with the following federal regulations, which are incorporated by reference: (1) 49 CFR 40, “Procedures for Transportation Workplace Drug and Alcohol Testing Programs”, as amended; (2) 49 CFR 191, “Transportation of Natural and Other Gas by Pipeline; Annual Reports, Incident Reports, and Safety Related Condition Reports”, as amended; (3) 49 CFR 192, “Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards”, as amended; (4) 49 CFR 193, “Liquefied Natural Gas Facilities: Federal Safety Standards”, as amended; (5) 49 CFR 199, “Drug and Alcohol Testing”, as amended. B. Each utility or gas master meter operator shall use as accepted good engineering practice the applicable provisions in: (1) The GPTC Guide for Gas Transmission and Distribution Piping Systems 2003, Volume One with Addenda No. 1—4, which are incorporated by reference; (2) The American National Standard, “National Fuel Gas Code”, ANSI Z223.1 (1988), which is incorporated by reference; (3) “Orifice Metering of Natural Gas”, Report No. 3 of American Gas Association Gas Measurement Committee; (4) The American National Standard for Gas Displacement Meters (500 Cubic Feet per Hour Capacity and Under), (ANSI B109.1 and ANSI B109.2), which is incorporated by reference; (5) The American National Standard for Diaphragm Type Gas Displacement Meters (Over 500 Cubic Feet per Hour Capacity), (ANSI B109.2), which is incorporated by reference; (6) The American National Standard for Rotary Type Gas Displacement Meters, (ANSI B109.3), which is incorporated by reference. ## Provenance - Official: Yes - Source: - Source ID: `maryland-comar` - SHA-256: `0cff4129d7648c9aa28548afcf03f55c21d72e4c21be58100d5911ffdaefc177` - Retrieved: 2026-08-20T08:47:37.108Z - Exported: 2026-08-23T11:57:54.490Z - Document slug: `md-comar-20-55-02-02` ### Source metadata ```json { "jurisdiction": "US-MD", "commodity": [ "natural-gas", "other-gas" ], "legalScope": "Bounded Maryland PSC pipeline-safety rules in COMAR 20.55-20.57.", "applicabilityCaveat": "Maryland PSC enforcement under PHMSA certification is limited to intrastate gas and hazardous-liquid pipeline operators and applicable LPG systems. PHMSA retains inspection and enforcement responsibility for interstate gas and hazardous-liquid pipelines. Coverage also depends on operator class, gas-company or master-meter status, facility and commodity definitions, exemptions, waivers, and federal preemption.", "incorporationCaveat": "Maryland provisions use both fixed editions of private or federal guidance and prospective phrases such as 'as amended' for federal statutes and 49 CFR. This connector preserves the consolidated Maryland text retrieved on the stated date but does not infer that every later federal amendment is incorporated for every legal purpose. Verify the controlling Maryland incorporation rule, federal edition, and event date.", "publicationCaveat": "The Library of Maryland Regulations is the official consolidated access system, but the Maryland Register and filed rulemaking record control adoption history. Administrative-history notes are evidence aids, not substitutes for the promulgation record. The PSC program description is dated September 2011 and is used only to corroborate program scope, not current rule text.", "rightsCaveat": "Official Maryland and federal legal-source captures are preserved with attribution and hashes. State presentation, seals, site software, and incorporated private standards may carry separate rights; incorporated standards are referenced but not reproduced by this connector.", "references": [], "region": "MD" } ```