Code of Federal Regulations · Section
§ 78.47-53 — -53 Automatic Ventilation Dampers
46 C.F.R. § 78.47-53
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(a) The manual operating positions for automatic fire dampers in ventilation ducts passing through main vertical zone bulkheads shall be identified by red day light-reflecting letters at least
1/2 inch high “VENTILATION FIRE DAMPER.” In addition, the open and closed positions shall be similarly marked.
(b) [Reserved]
Authorizing Statute
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Superintendence of the merchant marine46 U.S.C. § 2103
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General regulatory authority49 U.S.C. § 5103
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Oil and hazardous substance liability33 U.S.C. § 1321