(27) Muffler or Exhaust Pot.-See heading 4, paragraph b.

(28) Lubricating Oil Drips and Pans.-See heading 8.

(29) Name Plate.-See heading 9.

(30) Care and Attendance.—(a) The supply tank should be filled during daylight hours only, and while the engine is not running.

(b) The tank should be filled by means of approved safety cans, and main gasoline supply should be kept in approved receptacles outside of buildings.

(c) Due consideration must be given to the cleaning of the cylinder, valves and exhaust pipe as often as the quality of the fuel may necessitate.

(d) Portable engines should not be used where dust or inflammable flyings prevail, nor be located near combustible material.

Stationary Kerosene and Fuel Oil Engines.-The following regulations refer to engines using a fuel having a flash point above 100 degrees Fahrenheit:

(31) Location of the Engine.-Same as for gas engines, described under heading 1, in paragraphs a, b, and c.

(32) Capacity and Location of Tanks.-These should conform to the Regulations for the Storage and Use of Fuel Oil in Class A, and under the heading of 11 to 16, inclusive, of Class B. A copy of these rules will be sent you free of charge by the National Board of Fire-Underwriters.

(33) Fill and Vent Pipes.-See heading 12.

(34) Auxiliary Tanks.—(a) Tanks or other reservoirs for providing a supply of oil inside of the building must have a capacity of not more than 60 gallons when not of the pressure type. Such tanks must be filled by means of an approved pump, which is connected by full weight iron or steel pipe to the main supply tank.

The auxiliary tanks must be provided with an ample overflow pipe connected with the main supply tank. The oil must be drawn from the auxiliary supply by means of an approved pump worked by the engine. Feeding oil by gravity to the engine or pipe connections below the oil level in auxiliary tanks which have a capacity in excess of one gallon is not to be permitted.

(b) Tanks or receivers of the pressure type must not have a capacity of over 10 gallons, and must be provided with a reliable gauge. This tank must also have an approved pressure relief set to operate at a safe pressure and connected by an overflow pipe to the main tank.

These receivers when arranged with engine supply pipe connections below the oil level, to be so arranged that the oil will automatically drain back to the main supply tank when the engine stops, leaving not over 1 gallon when necessary for priming. In case the supply of oil for the engine by piping is connected above the oil level the automatic release of the pressure without the draining of the oil may be permitted.

(35) Piping. See heading 12.

(36) Ignition and Starting.—(a) Torches for pre-heating the combustion chamber of engines are to be used only while starting the engine, and the pressure on the supply reservoir is to be released as soon as the engine is firing properly.

(b) Torches used for initially heating the combustion chamber must be of a type approved for use with kerosene.

(c) Gasoline, if used for starting engines, must be introduced as a fuel inside the cylinders and the supply of gasoline must not be more than necessary to produce a proper temperature for operating the engine with the heavier fuel oils.

(d) The gasoline supply for engines using this liquid for starting must be drawn from an outside underground storage tank by means of a hand pump permanently attached to the engine in an approved feed cup or reservoir having a capacity of not more than 1 pint and provided with an overflow to the outside gasoline tank; or an approved reservoir of the lift out type may be used, provided the capacity is limited, as explained in paragraph c, above, but it must not exceed 1 gallon, and, further, that the retention of any gasoline after the engine starts is automatically prevented.

(37) The Muffler or Exhaust Pot.-Same as described under heading 4.

(38) The Exhaust Pipe.-Same as described un

der heading 6. Water pockets in exhaust pipes to be provided with suitable means for drainage.

(39) The Engine Room.-Same as described under heading 7.

(40) Lubricating Oil Drips and Pans.-Same as described under heading 8.

(41) Name Plate.-Same as described under heading 9.

(42) Care and Attention.-Same as described under heading 10.

(1)

INDEX