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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 46 - Shipping |
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Chapter I - Coast Guard, Department of Homeland Security |
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SubChapter D - Tank Vessels |
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Part 32 - Special Equipment, Machinery, and Hull Requirements |
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Subpart 32.56 - Structural Fire Protection for Tank Ships With a Keel Laying Date On or After January 1, 1975 |
§ 32.56-60 - Ventilation ducts - T/ALL.
Latest version.
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§ 32.56-60 Ventilation ducts - T/ALL.
(a) Each duct for ventilation of Category A machinery spaces that passes through accommodation, service, or control spaces must be:
(1) Constructed of steel and insulated to “A-60” Class; or
(2) 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.
(b) 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.