§ 154.822Detonation arresters, flame arresters, and flame screens.
(a) Each detonation arrester required by this part must:
(1) Be capable of arresting a detonation from either side of the device; and
(2) Be acceptable to the Commandant (CG-522). A detonation arrester designed, built, and tested in accordance with appendix A of this part will be acceptable to the Commandant (G-MSO).
(b) Each flame arrester required by this part must be acceptable to the Commandant (CG-522). A flame arrester designed, built, and tested in accordance with appendix B of this part will be acceptable to the Commandant (G-MSO).
(c) Each flame screen required by this part must be either a single screen of corrosion resistant wire of at least 30 by 30 mesh, or two screens, both of corrosion resistant wire, of at least 20 by 20 mesh, spaced not less than 12.7 millimeters (1/2 in.) or more than 38.1 millimeters (11/2 in.) apart.
[CGD 88-102, 55 FR 25429, June 21, 1990; 55 FR 39270, Sept. 26, 1990, as amended by CGD 96-026, 61 FR 33666, June 28, 1996; USCG-2002-12471, 67 FR 41333, June 18, 2002; USCG-2010-0351, 75 FR 36284, June 25, 2010]
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