---
kind: "section"
citation: "30 C.F.R. § 18.60"
title: "30"
number: "18.60"
heading: "Detailed inspection of components."
url: "https://uscodex.org/cfr/30/18.60"
---

# §18.60. Detailed inspection of components.


An inspection of each electrical component shall include the following:

- (a) **A detailed check of parts against the drawings submitted by the applicant to determine that—**
  - (1) The parts and drawings coincide; and (2) the minimum requirements stated in this part have been met with respect to materials, dimensions, configuration, workmanship, and adequacy of drawings and specifications.
- (b) **Exact measurement of joints, journal bearings, and other flame-arresting paths.**
- (c) **Examination for unnecessary through holes.**
- (d) **Examination for adequacy of lead-entrance design and construction.**
- (e) Examination for adequacy of electrical insulation and clearances between live parts and between live parts and the enclosure.
- (f) **Examination for weaknesses in welds and flaws in castings.**
- (g) **Examination for distortion of enclosures before tests.**
- (h) Examination for adequacy of fastenings, including size, spacing, security, and possibility of bottoming.

## Notes

### Authority

Authority: 30 U.S.C. 957, 961.

### Source

Source: 33 FR 4660, Mar. 19, 1968, unless otherwise noted.