---
kind: "section"
citation: "40 C.F.R. § 265.1058"
title: "40"
number: "265.1058"
heading: "Standards: Pumps and valves in heavy liquid service, pressure relief devices in light liquid or heavy liquid service, and flanges and other connectors."
url: "https://uscodex.org/cfr/40/265.1058"
---

# §265.1058. Standards: Pumps and valves in heavy liquid service, pressure relief devices in light liquid or heavy liquid service, and flanges and other connectors.

- (a) Pumps and valves in heavy liquid service, pressure relief devices in light liquid or heavy liquid service, and flanges and other connectors shall be monitored within 5 days by the method specified in [§ 265.1063(b)](/cfr/40/265.1063.md?p=b) if evidence of a potential leak is found by visual, audible, olfactory, or any other detection method.
- (b) If an instrument reading of 10,000 ppm or greater is measured, a leak is detected.
- (c)
  - (1) When a leak is detected, it shall be repaired as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in [§ 265.1059](/cfr/40/265.1059.md).
  - (2) The first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
- (d) First attempts at repair include, but are not limited to, the best practices described under [§ 265.1057(e)](/cfr/40/265.1057.md?p=e).
- (e) Any connector that is inaccessible or is ceramic or ceramic-lined (e.g., porcelain, glass, or glass-lined) is exempt from the monitoring requirements of [paragraph (a)](#a) of this section and from the recordkeeping requirements of [§ 265.1064](/cfr/40/265.1064.md) of this subpart.

## Notes

### Amendments

[55 FR 25512, June 21, 1990, as amended at 61 FR 59971, Nov. 25, 1996]

### Source

Source: 55 FR 25512, June 21, 1990, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 6905, 6906, 6912, 6922, 6923, 6924, 6925, 6935, 6936, 6937, and 6939g.

### Source

Source: 45 FR 33232, May 19, 1980, unless otherwise noted.

### Amendments

[55 FR 25512, June 21, 1990, as amended at 61 FR 59971, Nov. 25, 1996]