Each fire damper installed within the boundary of a space protected by a fixed fire extinguishing system must be fitted with an indicator showing whether the damper is open or closed and must be marked with red letters at least 13 millimeters (
1/2-inch) high stating “FIRE DAMPER” and, as otherwise appropriate, identifying the space served by the fire damper.
authority: 33 U.S.C. 1321(j);
46 U.S.C. 3306,
6101,
10104; E.O. 12234, 3 CFR, 1980 Comp., p. 277; E.O. 12777, 3 CFR, 1991 Comp., p. 351; Department of Homeland Security Delegation No. 0170.1. Section 131.990 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905
source: CGD 82-004 and CGD 86-074, 62 FR 49340, Sept. 19, 1997, unless otherwise noted.
cite as: 46 CFR 131.899