On all vessels of over 500 gross tons there shall be in each fireroom a metal tank containing 50 gallons of sand fitted with a scoop or shaker for fire purposes; also two or more approved fire extinguishers placed accessible to the fireroom and ready for immediate use : Provided, however, that steamers of 500 gross tons and under may be fitted with metal tanks containing 25 gallons of sand.
Cofferdams may be used when required by classi fication or any standard bureau of construction, but same are not compulsory under these regulations.
When expansion trunks extend above the decks, all rivet holes shall be drilled and double chain riveted.
Lloyds rules for the burning and caring of oil fuel: 1. On vessels fitted for burning oil fuel, and hav ing the society's classification, the following records will be made in the register book : "Fitted for oil fuel F. P. above 150 deg. F." in cases in which approval has been given for the use of high flash point oil only; and "Fitted for low flash oil fuel" in cases in which the approval covers the use of oil with low flash point.
2. The following arrangements are applicable only to the case of oil fuel, the flash point of which, as de termined by Abel's close test, does not fall below 150 deg. F. For oil fuel with a lower flash point the ar rangements must be submitted for special considera tion.
3. Oil fuel, the flash point of which by Abel's close does not fall below 150 deg. F., may be carried in ordi nary cellular double bottoms either under engines or boilers or under ordinary cargo holds, also in peak tanks or in deep tanks; or in bunkers specially con structed for the purpose.
4. Cellular double bottoms when fitted for oil fuel are to have oil tight center line divisions, and the lengths of these compartments are to be submitted for approval.
5. Peak tanks, deep tanks, bunkers specially con structed for oil fuel, and settling and other service tanks must be fitted with bulkhead sub-divisions or wash plates to the committee's astisfaction and be strengthened so as to efficiently withstand the stresses brought upon them when only partly filled and in a seaway. The riveting of these spaces is to be as re quired by the rules in the cases of vessels carrying petroleum in bulk and scantlings and arrangements must be to the committee's satisfaction.
6. All compartments intended for carrying oil fuel must be tested by a head of water extending to the highest point of the filling pipes or 12 ft. above the load line, or 12 ft. above the highest point of the com partment which ever of these is the greatest.
7. Each compartment must be fitted with an air pipe to be always open, discharging above the upper deck. It is recommended that all double bottom com partments used for oil fuel should have suitable holes and doors of approved design fitted in the outer bottom plating.
8. Efficient means must be provided by wells or gutterways, and sparring or lining, to prevent any leak age from any of the oil fuel compartments from com ing into contact with cargo or coal, and to ensure that any leakage shall have free drainage into the limbers or wells.
9. If double bottoms under holds are used for carrying oil fuel, the ceiling must be laid on transverse battens, leaving at least 2 in. air space between the ceiling and tank top, and permitting free drainage from the tank top into the limbers.
10. The pumping arrangements of the oil fuel com partments must be absolutely distinct from those of other parts of the vessel and must be submitted for approval.
11. If it is intended to carry sometimes oil fuel and sometimes water ballast in any of the compart ments, the valves or cocks connecting the suction pipes to these compartments with the ballast donkey pump and those connecting them the oil fuel pump must be so arranged that the oil may be pumped from any one compartment by the oil fuel pump at the same time as the ballast donkey is being used on any other com partment.
All oil fuel suction pipes should have valves or cocks fitted at the bulkheads where they enter the stokehold, capable of being worked both from the stoke hold and from the deck. Valves or cocks similarly worked are to be fitted to all pipes leading from the settling or service tanks.
. 13. Oil fuel pipes should, where practicable, be placed above the stokehold and engine room plates, and where they are always visible.
14. No wood fitting or bearers are to be fitted in the stokehold spaces.
15. Where oil fuel compartments are at the sides of, or above, or below the boilers, special insulation is to be fitted where necessary to protect them from the heat of the boilers, smoke boxes, casings, etc.
16. Water service pipes and hoses are to be fitted so that the stokehold plates can at any time be flashed with sea water into the bilges.
17. If the oil fuel is sprayed by steam, means are to be provided to make up for the fresh water used for this purpose.
18. If the oil fuel is heated by a steam coil the condensed water should not be taken directly to the condensers, but should be led into a tank or an open