46 CFR 105.25-7 - Ventilation systems for cargo tank or pumping system compartment.
(a) Each compartment shall be provided with a mechanical exhaust system capable of ventilating such compartment with a complete change of air once in every 3 minutes. The intake duct or ducts shall be of sufficient size to permit the required air change. The exhaust duct or ducts shall be located so as to remove vapors from the lower portion of the space or bilges.
Title 46 published on 2013-10-01
no entries appear in the Federal Register after this date.