# PSC 134.30 Periodic testing and maintenance.

**Citation:** Wis. Admin. Code § PSC 134.30  
**Type / status:** regulation / current  
**Agency:** Public Service Commission of Wisconsin  
**Effective:** 1989-12-01  
**Published:** Not stated

Complete current PSC 134.30 from official Wisconsin Legislature sources (gas-utility-service).

## Document text

PSC 134.30 Periodic testing and maintenance. Each utility shall test its meters according to the following schedule except as provided in s. PSC 134.26 (1). Where pressure regulators, volume corrective devices, or other measuring devices are used on the service or used in conjunction with the meters, they shall be tested on the same schedule as the meters.

(1) All diaphragm meters that are measuring dry gas and have non-absorptive type diaphragms or were rediaphragmed since the introduction of dry gas shall be due for removal from service, tested, adjusted, repaired if necessary, and retested if reused, every 180 months if the meter capacity is 2,400 cubic feet per hour or less at 1⁄2-inch water column and every 48 months if the capacity is greater than 2,400 cubic feet. Meters shall be tested during the calendar year in which said 180th or 48th month falls.

(2) All diaphragm meters that are measuring dry gas that do not have non-absorptive-type diaphragms and have not been rediaphragmed since the introduction of dry gas shall be removed from service, tested, adjusted, re-diaphragmed and retested within 48 months of the introduction of dry gas if the meter capacity is 2,400 cubic feet per hour at 1⁄2-inch water column and within 24 months if the capacity is greater than 2,400 cubic feet.

(3) All diaphragm meters that measure other than dry gas shall be removed from service, tested, adjusted, repaired, if necessary, and retested if reused every 96 months if the meter capacity is 2,400 cubic feet per hour or less at 1⁄2-inch water column and every 48 months if the capacity is greater than 2,400 cubic feet.

(4) Rotary meters having a capacity of 15,000 cubic feet per hour or less at 4 oz. water column pressure shall be given a differential test at least once every 96 months and once every 48 months if the capacity is greater than 15,000 cubic feet. When the differential differs from the original test record by more than 50%, the meter shall be cleaned and/or repaired.

(5) Orifice meters shall have their differential and static recording gauges tested at least once each month, the diameter and condition of the orifice checked at least once a year. The specific gravity of the gas shall be checked as required in s. PSC 134.21 (4), and any temperature recording devices tested annually.

(6) Turbine meters shall be given an inspection and spin test at least once every 12 months. When the coasting time is equal to or less than the specified minimum coasting time as on file with the commission, the meter shall be cleaned and/or repaired.

(7) Turbine meters which are capable of automatically adjusting shall be inspected and tested at least once every 12 months. They shall be tested in accordance with s. PSC 134.28 (6) or with the use of the meter manufacturer’s electronic field prover.

(8) Whenever an automatically adjusting turbine meter automatically adjusts the volume for plus or minus 5% or more while in operation at a steady flow rate of 10% or more of the meter’s rated capacity, the meter shall be cleaned and/or repaired.

(9) Whenever an automatically adjusting turbine meter is being tested at a steady flow rate of 10% or more of the meter’s rated capacity and indicates an error of plus or minus 1% or more, the meter shall be cleaned and/or repaired.

## Provenance

- Official: Yes
- Source: <https://docs.legis.wisconsin.gov/document/administrativecode/PSC%20134.30>
- Source ID: `wi-legislature-pipeline-corpus`
- SHA-256: `721f6e2b872279ed7974725a99e0f8c86ae3fd5990c29ca881b20c998ee73eaa`
- Retrieved: 2026-08-12T06:25:04.554Z
- Exported: 2026-08-22T21:22:40.178Z
- Document slug: `wi-psc-134-30`

### Source metadata

```json
{
  "jurisdiction": "US-WI",
  "code": "Wisconsin Administrative Code",
  "chapter": "PSC 134",
  "section": "PSC 134.30",
  "category": "gas-utility-service",
  "currentThrough": "2026-08-01",
  "currentnessBasis": "Official publisher states the entire administrative code is current and updated on the first day of each month.",
  "legalScope": "This completeness-verified corpus contains every current section of Wisconsin Administrative Code Chapters PSC 133, 134, and 135, plus complete Wis. Stat. §§ 196.745 and 182.0175. Chapter PSC 135 is the dedicated gas-safety chapter. Chapters PSC 133 and 134 are included because the Wisconsin PSC identifies all three chapters as requirements used in pipeline-safety inspections; they also contain broader construction, siting, utility-service, billing, metering, and customer provisions.",
  "applicabilityCaveat": "Applicability depends on Wisconsin PSC jurisdiction, operator and facility type, intrastate or interstate status, gas-public-utility status, project thresholds, activity, exemptions, waivers, Commission orders, federal preemption, and the specific provision. Wis. Stat. § 196.745 excludes propane distribution systems from the PSC pipeline-safety program, while the one-call law reaches transmission facilities beyond natural-gas pipelines.",
  "incorporationCaveat": "Chapter PSC 135 adopts and supplements federal minimum pipeline-safety standards, principally 49 CFR Parts 191, 192, 193, and 199. The source also cites statutes, administrative rules, Commission forms and orders, and private technical standards. References are retained as metadata; incorporated material is not reproduced and its edition, legal effect, and licensing must be verified at the referenced source.",
  "rightsCaveat": "Official Wisconsin Legislature and Public Service Commission text is preserved with attribution and source hashes. Public availability does not establish a blanket license for site presentation, agency marks, annotations, forms, or incorporated federal and privately authored standards; downstream redistribution requires separate rights review.",
  "history": "History: Cr. Register, February, 1959, No. 38, eff. 3-1-59; am. (4), Register, November, 1962, No. 83, eff. 12-1-62; am. (1), Register, January, 1965, No. 109, eff. 2-1-65; am. (4) and cr. (6), Register, April, 1969, No. 160, eff. 5-1-69; cr. (7) to (9), Register, December, 1984, No. 348, eff. 1-1-85; am. (1) and (4), Register, November, 1989, No. 407, eff. 12-1-89.",
  "references": [
    {
      "citation": "PSC 134.26(1)",
      "referenceType": "wisconsin-administrative-code",
      "url": "https://docs.legis.wisconsin.gov/document/administrativecode/PSC%20134.26(1)",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "PSC 134.21(4)",
      "referenceType": "wisconsin-administrative-code",
      "url": "https://docs.legis.wisconsin.gov/document/administrativecode/PSC%20134.21(4)",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "PSC 134.28(6)",
      "referenceType": "wisconsin-administrative-code",
      "url": "https://docs.legis.wisconsin.gov/document/administrativecode/PSC%20134.28(6)",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, February, 1959, No. 38",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/38/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, November, 1962, No. 83",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/83/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, January, 1965, No. 109",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/109/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, April, 1969, No. 160",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/160/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, December, 1984, No. 348",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/348/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    },
    {
      "citation": "Register, November, 1989, No. 407",
      "referenceType": "administrative-register",
      "url": "https://docs.legis.wisconsin.gov/document/register/407/B/toc",
      "linkBasis": "official-publisher-supplied exact-citation link"
    }
  ],
  "sourceCollection": "wi-legislature-psc-code",
  "region": "WI"
}
```