46 C.F.R. § 52.20-17 Opening between boiler and safety valve (modifies PFT–44).
Title 46 - Shipping
When a discharge pipe is used, it must be installed in accordance with the requirements of §52.01–105. [CGD 81–79, 50 FR 9434, Mar. 8, 1985]
Title 46: Shipping
PART 52—POWER BOILERS
Subpart 52.20—Requirements for Firetube Boilers
§ 52.20-17 Opening between boiler and safety valve (modifies PFT–44).
