---
kind: "section"
citation: "49 C.F.R. § 230.71"
title: "49"
number: "230.71"
heading: "Orifice testing of compressors."
url: "https://uscodex.org/cfr/49/230.71"
---

# §230.71. Orifice testing of compressors.

- (a) **Frequency of testing.** The compressor or compressors shall be tested for capacity by orifice test as often as conditions may require, but not less frequently than once every 92 service days.
- (b) **Orifice testing criteria.**
  - (1) Compressors in common use, as listed in the following table, shall have orifice test criteria as follows:
  - (2) For compressors not listed in the table in [paragraph (b)(1)](#b-1) of this section, the air pressure to be maintained shall be no less than 80 percent of the manufacturer's rated capacity for the compressor.

## Notes

### Authority

Authority: 49 U.S.C. 20103, 20107, 20702; 28 U.S.C. 2461 note; and 49 CFR 1.89.

### Source

Source: 64 FR 62865, Nov. 17, 1999, unless otherwise noted.