CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER I-A—MOBILE OFFSHORE DRILLING UNITS (parts 107 to 109) > PART 108—DESIGN AND EQUIPMENT > SUBPART D—Fire Extinguishing Systems (§108.401 to §108.499) > 108.407—Detectors for electric fire detection system.

108.407—Detectors for electric fire detection system.

(a) Each detector in an electric fire detection system must be located where—
(1) No portion of the overhead of a space protected is more than 3 meters (10 feet) from a detector;
(2) Beams and girders extending below the ceiling of the space protected and any other obstructions do not detract from the effectiveness of the detector; and
(3) Damage to the detector is unlikely to occur if it is not protected.
(b) Each detector must be set to activate at not less than 57 °C (135 °F) and at not more than 73 °C (165 °F), except that if a space normally has a high ambient temperature each detector may be set to activate at not less than 80 °C (175 °F) and not more than 107 °C (225 °F).