Location of B/3 vent discharges.

Except as prescribed in § 153.353, a B/3 venting system must discharge: (a) At the highest of the following points: (1) 6m (approx. 19.7 ft) above the weatherdeck. (2) B/3 above the weatherdeck. (3) 6m (approx. 19.7 ft) above a walkway, if the walkway is within a 6m (approx. 19.7 ft) horizontal radius from the vent discharge. (b) At least 15m (approx. 49.2 ft) from air intakes for, or openings into, accommodation and service spaces. [CGD 78-128, 47 FR 21208, May 17, 1982; 47 FR 27293, June 24, 1982]