ASTM International - ASTM F991-86
Specification for Docking/Drain Plug and Boss Assemblies
|Publication Date:||1 January 1986|
|ICS Code (Piping systems):||47.020.30|
1.1 This specification provides design, construction, and purchasing criteria for docking/drain plug and boss assemblies.
1.2 Assemblies are intended for installation in shell, rudder, and tank bottom plate from 5/16 through 11/2 in.
1.3 Assemblies shall be installed at the lowest point of a tank or rudder for draining during dry docking or cleaning of tanks.
1.4 The values stated in inch-pound units are to be regarded as the standard.