46 C.F.R. § 162.018-8 Procedure for approval.
Title 46 - Shipping
(a) General. Safety relief valves for use on pressure vessels containing liquefied compressed gases shall be approved by the Commanding Officer, USCG Marine Safety Center, 400 Seventh Street SW., Washington, DC 20590–0001. (b) Plan submittal. Manufacturers desiring to secure approval of a new design or type of safety relief valve shall submit in quadruplicate detail drawings showing the valve construction, and material specifications of the component parts. In the event the design is changed, amended drawings shall be submitted to the Commanding Officer, USCG Marine Safety Center, for re-approval. (c) Pre-approval tests. (1) Prior to approval of safety relief valves by the Commanding Officer, USCG Marine Safety Center, manufacturers shall have capacity certification tests conducted, in accordance with §162.018–7 or submit satisfactory evidence that such tests have been conducted and approved by The National Board of Boiler and Pressure Vessel Inspectors or by a properly supervised and inspected test laboratory acceptable to the Commanding Officer, USCG Marine Safety Center. (2) Reports of conducted tests on designs of safety relief valves different from those previously approved shall be submitted by the manufacturer when requesting approval for different designs. [CGFR 52–43, 17 FR 9540, Oct. 18, 1952, as amended by CGFR 68–82, 33 FR 18908, Dec. 18, 1968; CGD 88–070, 53 FR 34536, Sept. 7, 1982; CGD 96–041, 61 FR 50734, Sept. 27, 1996; USCG 2001–10224, 66 FR 48620, Sept. 21, 2001]
Title 46: Shipping
PART 162—ENGINEERING EQUIPMENT
Subpart 162.018—Safety Relief Valves, Liquefied Compressed Gas
§ 162.018-8 Procedure for approval.

