---
kind: "section"
citation: "46 C.F.R. § 64.61"
title: "46"
number: "64.61"
heading: "Rupture disc."
url: "https://uscodex.org/cfr/46/64.61"
---

# §64.61. Rupture disc.


If a rupture disc is the only pressure relief device on the tank, the rupture disc must—

- (a) Rupture at a pressure of 125 percent of the maximum allowable working pressure; and
- (b) Have a minimum normal venting capacity that is sufficient to prevent the tank pressure from exceeding 137.5 percent of the maximum allowable working pressure.

## Notes

### Authority

Authority: 46 U.S.C. 3306, 3703; 49 U.S.C. App. 1804; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: CGD 73-172, 39 FR 22950, June 25, 1974, unless otherwise noted.