---
kind: "section"
citation: "49 C.F.R. § 192.721"
title: "49"
number: "192.721"
heading: "Distribution systems: Patrolling."
url: "https://uscodex.org/cfr/49/192.721"
---

# §192.721. Distribution systems: Patrolling.

- (a) The frequency of patrolling mains must be determined by the severity of the conditions which could cause failure or leakage, and the consequent hazards to public safety.
- (b) Mains in places or on structures where anticipated physical movement or external loading could cause failure or leakage must be patrolled—
  - (1) In business districts, at intervals not exceeding 4 1/2 months, but at least four times each calendar year; and
  - (2) Outside business districts, at intervals not exceeding 7 1/2 months, but at least twice each calendar year.

## Notes

### Amendments

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-43, 47 FR 46851, Oct. 21, 1982; Amdt. 192-78, 61 FR 28786, June 6, 1996]

### 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

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-43, 47 FR 46851, Oct. 21, 1982; Amdt. 192-78, 61 FR 28786, June 6, 1996]