§32.56-60. Ventilation ducts—T/ALL.
46 C.F.R. § 32.56-60
Each duct for ventilation of Category A machinery spaces that passes through accommodation, service, or control spaces must be:
Constructed of steel and insulated to “A-60” Class; or
Constructed of steel, fitted with an automatic fire damper at each boundary where it enters and leaves the Category A machinery space, and insulated to “A-60” Class for a distance of 5 meters (16.4 feet) beyond each machinery space boundary.
Each duct for ventilation of accommodation, service, and control spaces that passes through Category A machinery spaces must be constructed of steel and be fitted with an automatic fire damper at each Category A machinery space boundary.
Notes, amendments, and revision history
Source
Source: CGD 74-127, 41 FR 3844, Jan. 26, 1976, unless otherwise noted.
Authority
Authority: 46 U.S.C. 2103, 3306, 3703, 3719; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4; Subpart 32.59 also issued under the authority of Sec. 4109, Pub. L. 101-380, 104 Stat. 515.
Source
Source: CGFR 65-50, 30 FR 16671, Dec. 30, 1965, unless otherwise noted.