---
kind: "section"
citation: "49 C.F.R. § 230.78"
title: "49"
number: "230.78"
heading: "Leakage."
url: "https://uscodex.org/cfr/49/230.78"
---

# §230.78. Leakage.

- (a) **Main reservoirs and related piping.** Leakage from main reservoir and related piping shall be tested at every 92 service day inspection and shall not exceed an average of 3 psi per minute in a test of 3 minutes duration that is made after the pressure has been reduced to 60 percent of the maximum operating pressure.
- (b) **Brake cylinders.** Leakage from brake cylinders shall be tested at every 92 service day inspection. With a full service application from maximum brake pipe pressure, and with communication to the brake cylinders closed, the brakes on the steam locomotive and tender must remain applied for a minimum of 5 minutes.
- (c) **Brake pipes.** Steam locomotive brake pipe leakage shall be tested at the beginning of each day the locomotive is used, and shall not exceed 5 psi per minute.

## 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.