# ACCEPTABLE STANDARDS

**Citation:** Tenn. Comp. R. & Regs. 1220-04-05-.22  
**Type / status:** regulation / current  
**Agency:** Tennessee Public Utility Commission  
**Effective:** 2003-03-28  
**Published:** Not stated

(1) Unless otherwise specified by the Commission, the utility shall use the applicable provisions in the publications listed below as standards of accepted good practice. (a) The current edition of the USA Standard Code for Gas Transmission and Distribution Piping Systems, USAS B31.8, 1968. (b) The 

## Document text

(1) Unless otherwise specified by the Commission, the utility shall use the applicable provisions in the publications listed below as standards of accepted good practice.

(a) The current edition of the USA Standard Code for Gas Transmission and Distribution Piping Systems, USAS B31.8, 1968.

(b) The latest edition of the American Standard Installation of Gas Appliances and Gas Piping, USAS Z21.30, 1964.

(c) The current edition of the National Fire Protection Association, No. 58, “The Storage and Handling of Liquefied Petroleum Gases.”

(d) Standard methods for testing pipeline displacement gas meters as indicated in the American Meter Co. Handbook.

(e) “Testing Large Capacity Rotary Gas Meters,” Research Paper No.1741, National Bureau of Standards Journal of Research, September, 1946.

(f) “Standard Method of Test for Calorific Value of Gaseous Fuels by the Water-Flow Calorimeter,” American Society for Testing Materials, Standard D 900-55.

## Provenance

- Official: Yes
- Source: <https://publications.tnsosfiles.com/rules/1220/1220-04/1220-04-05.20180427.pdf>
- Source ID: `tn-sos-rules`
- SHA-256: `fbd532e26312e4b988334f80d8a6743e3a54bf552575d39e966d2d37b90befe7`
- Retrieved: 2026-08-20T08:55:29.804Z
- Exported: 2026-08-22T20:42:50.421Z
- Document slug: `tn-rules-1220-04-05-22`

### Source metadata

```json
{
  "jurisdiction": "US-TN",
  "chapter": "1220-04-05",
  "rule": "22",
  "pipelineScope": "tennessee-adjacent-gas-safety",
  "legalScope": "Bounded current Tennessee Chapter 1220-04-05 gas-safety corpus: definitions; engineering, plant, gas-quality, pressure, leak, odorization, welding, emergency and related safety requirements; and the complete dedicated pipeline enforcement and standards rules 1220-04-05-.47 and -.48. Customer billing, deposits, advertising, routine metering/accounting, and repealed or reserved entries are inventoried but excluded.",
  "applicabilityCaveat": "Applicability depends on Tennessee Public Utility Commission jurisdiction, gas-public-utility status, facility and activity, intrastate or interstate jurisdiction, federal preemption, exemptions or Commission orders, and the specific rule. Rules 1220-04-05-.47 and -.48 are the dedicated pipeline-safety rules; the other included rules are materially adjacent gas safety and plant-integrity requirements.",
  "rights": "The official Tennessee Secretary of State rules compilation is preserved with attribution and provenance. No general reuse license was identified for site presentation; state marks, linked material, and incorporated standards may carry separate rights. Confirm redistribution requirements beyond legal research.",
  "currentEffectiveOn": "2003-03-28",
  "sourceRevisionOn": "2018-04-27",
  "effectiveDateBasis": "Latest explicit effective date in the rule's official administrative history; the compilation-wide 2018 administrative revision is separately recorded.",
  "authorityHistory": "Authority: T.C.A. § 65-2-l02. Administrative History: Original rule certified May 9, 1974. Editorial changes made by the Secretary of State pursuant to Public Chapter 305 of 1995; “Commission” and references to the “Commission” were changed to “Authority” and references to the “Authority”; effective March 28, 2003. Administrative changes made to this chapter on April 27, 2018 pursuant to Public Chapter 94 of 2017; “Tennessee Regulatory Authority” references were changed to “Tennessee Public Utility Commission,” “Authority” references were changed to “Commission,” “Authority Director” references were changed to “Commissioner,” and “Chief” references were changed to “Director.”",
  "references": [],
  "publicationStatus": "Current official compilation published by the Tennessee Secretary of State, revised April 2018.",
  "region": "TN"
}
```