---
kind: "section"
citation: "46 C.F.R. § 154.655"
title: "46"
number: "154.655"
heading: "Stress relief for independent tanks type C."
url: "https://uscodex.org/cfr/46/154.655"
---

# §154.655. Stress relief for independent tanks type C.


For a design temperature colder than −10 °C (14 °F), an independent tank type C of:

- (a) Carbon and carbon-manganese steel must be stress relieved by post-weld heat treatment under [§ 54.25-7](/cfr/46/54.25-7.md) of this chapter or by mechanical stress relief under [subpart 54.30](/cfr/46/subpart54.30.md) of this chapter; or
- (b) Materials other than carbon and carbon manganese steel must be stress relieved as required under [part 54](/cfr/46/part54.md) of this chapter. The procedure for stress relieving must be specially approved by the Commandant (CG-OES).

## Notes

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.