# ACCEPTABLE REFERENCES

**Citation:** Tenn. Comp. R. & Regs. 1220-04-05-.23  
**Type / status:** regulation / current  
**Agency:** Tennessee Public Utility Commission  
**Effective:** Not stated  
**Published:** Not stated

(1) The following publications have not been designated as standards but they may be used as guides to acceptable practice. (a) “Accuracy of the Recording, Gas Calorimeter When Used With Gases of High BTU Content,” by John H. Eiseman, National Bureau of Standards, and Elwin A. Potter, Gas Inspection

## Document text

(1) The following publications have not been designated as standards but they may be used as guides to acceptable practice.

(a) “Accuracy of the Recording, Gas Calorimeter When Used With Gases of High BTU Content,” by John H. Eiseman, National Bureau of Standards, and Elwin A. Potter, Gas Inspection No. CEP-55-13.

(b) “Orifice Metering of Natural Gas,” Report No. 3 of the AGA Gas Measurement Committee.

(c) Reports prepared by the Practical Methods Committee of the Appalachian Gas Measurement Short Course, West Virginia University, as follows:

1. Report No.1, “Methods of Testing Large Capacity Displacement Meters.”

2. Report No.2, “Testing Orifice Meters.”

3. Report No.3, “Designing and Installing Measuring and Regulating Stations.”

4. Report No.4, “Useful Tables for Gas Men.”

5. Report No.5, “Power Room Practices.”

## Provenance

- Official: Yes
- Source: <https://publications.tnsosfiles.com/rules/1220/1220-04/1220-04-05.20180427.pdf>
- Source ID: `tn-sos-rules`
- SHA-256: `bbfb37970025dc216cd2cb409e28701d80b69deec49e1d43bc7986bce45799f1`
- Retrieved: 2026-08-20T08:55:29.804Z
- Exported: 2026-08-27T16:55:59.634Z
- Document slug: `tn-rules-1220-04-05-23`

### Source metadata

```json
{
  "jurisdiction": "US-TN",
  "chapter": "1220-04-05",
  "rule": "23",
  "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 Customer billing, deposits, advertising, routine metering/accounting, and repealed or reserved entries are inventoried but excluded.",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": null,
  "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. § 65-2-102. Administrative History: Original rule certified May 9, 1974. 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": [
    {
      "citation": "T.C.A. § 65-2-102",
      "referenceType": "tennessee-code"
    }
  ],
  "publicationStatus": "Current official compilation published by the Tennessee Secretary of State, revised April 2018.",
  "region": "TN"
}
```