CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES (parts 150 to 155) > PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES > SUBPART C—Design, Construction and Equipment (§154.170 to §154.1440) > 154.1110—Areas protected by system.

154.1110—Areas protected by system.

Each liquefied flammable gas vessel and each liquefied toxic gas vessel must have an exterior water spray system that meets §§ 154.1110 through 154.1135.
Each water spray system must protect:
(a) All cargo tank surfaces that are not covered by the vessel's hull structure or a steel cover;
(b) Each cargo tank dome;
(c) Each on-deck storage vessel for flammable or toxic liquefied gases;
(d) Each cargo discharge and loading manifold;
(e) Each quick-closing valve under §§ 154.530, 154.532, and 154.538, and other control valves essential to cargo flow;
(f) Each boundary facing the cargo area of each superstructure that contains accommodation, service, or control spaces;
(g) Each boundary facing the cargo area of each deckhouse that contains accommodation, service, or control spaces; and
(h) Each boundary of each deckhouse that is within the cargo area and that is manned during navigation of the vessel or during cargo transfer operations, except the deckhouse roof if it is 2.4 m (8 ft.) or higher above the cargo containing structure.
[CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]