---
kind: "section"
citation: "49 C.F.R. § 192.706"
title: "49"
number: "192.706"
heading: "Transmission lines: Leakage surveys."
url: "https://uscodex.org/cfr/49/192.706"
---

# §192.706. Transmission lines: Leakage surveys.


Leakage surveys of a transmission line must be conducted at intervals not exceeding 15 months, but at least once each calendar year. However, in the case of a transmission line which transports gas in conformity with [§ 192.625](/cfr/49/192.625.md) without an odor or odorant, leakage surveys using leak detector equipment must be conducted—

- (a) In Class 3 locations, at intervals not exceeding 7 1/2 months, but at least twice each calendar year; and
- (b) In Class 4 locations, at intervals not exceeding 4 1/2 months, but at least four times each calendar year.

## Notes

### Amendments

[Amdt. 192-21, 40 FR 20283, May 9, 1975, as amended by Amdt. 192-43, 47 FR 46851, Oct. 21, 1982; Amdt. 192-71, 59 FR 6585, Feb. 11, 1994]

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.

### Amendments

[Amdt. 192-21, 40 FR 20283, May 9, 1975, as amended by Amdt. 192-43, 47 FR 46851, Oct. 21, 1982; Amdt. 192-71, 59 FR 6585, Feb. 11, 1994]