Mar. 27.] THE NEW ZEALAND GAZETTE. 871

THIRD SCHEDULE.

DANGEROUS GOODS OF CLASS II.

INFLAMMABLE

KEEP AWAY FROM LIGHTS AND FIRES.

FOURTH SCHEDULE.

1. The vehicle, including the tank and fittings, shall be strongly constructed of fire-resisting material, and shall be maintained in thoroughly good condition. The engine and fuel-tank shall be effectively screened from the tank by a fire-resisting shield carried up above the top of the tank and down to within 12 in. of the ground, and the exhaust shall be wholly in front of this shield. The tank shall be securely fastened to the frame of the vehicle, provided that the removable tank securely fastened to a cradle may be used. A space of not less than 6 in., which shall be left clear and unobstructed except for any part of the framework of the wagon, shall intervene between the tank and the fire-resisting shield: Provided that the fire-resisting shield shall not be required on any tank-wagon constructed prior to 1st January, 1927, until 31st March, 1932.

2. The tank, if of more than 600-gallons capacity, shall be divided into self-contained compartments, no one of which shall contain more than six hundred gallons.

3. The draw-off pipes in each compartment of the tank-wagon shall be fitted with an internal valve, and each delivery-pipe from the tank-wagon shall be fitted with a quick-release valve of a type approved by the Chief Inspector, capable of being operated from such position that the connecting hose is under observation of the person operating the valve. External delivery pipes and valves shall in all cases be protected in such manner as may be approved from damage by collision. Where a syphon system of emptying the tank is employed internal valves shall not be required: Provided that in the case of removable tanks constructed prior to 7th January, 1927, internal valves shall not be required until 31st March, 1932.

4. All filling-pipes shall be carried down to the bottom of the tank, and shall terminate in such a way as to provide a liquid seal at the bottom of the pipe.

5. All dipping-pipes shall be carried down to the bottom of the tank, and any openings in them other than the upper orifice shall be covered with fine wire-gauze of not less than 28 meshes to the linear inch.

6. The ventilating openings shall be covered with fine wire-gauze of not less than 28 meshes to the linear inch, protected by covers when not in use. Except in the case where the dipping-pipe is used for ventilating purposes such fine wire-gauze cover shall, if of a movable character, be fixed in position by wire seal or other method approved by the Chief Inspector.

7. If electric lighting is employed on any vehicle conveying petroleum spirit, the following conditions shall be complied with:—
   (a) The pressure shall not exceed fourteen volts.
   (b) The circuit shall be heavily insulated from the chassis, and the wiring shall be supported and protected from mechanical injury, chafing and exposure to contact with oil, grease, or petrol, and shall be so located as to avoid damage to insulation from heat.
   (c) The generator, battery, switches, and fuzes shall be carried in front of the fire-resisting screen, and the battery shall be in an easily accessible position.
   (d) Means of cutting off the current by a double pole switch or other approved method shall be provided in the cab of the vehicle.

8. The tank, chassis, axles, and springs of the tank-wagon shall be metallically connected.

9. Every tank-wagon shall be equipped with a metallic drag-chain in electrical connection with the tank. Such chains shall be of not less size than ⅜ in. diameter, short length, and shall be of such length that not less than 10 in. of chain is resting on the ground when the tank-wagon is stationary.

FIFTH SCHEDULE.

In this Schedule the expression “oil” means any liquid to be tested for the purpose of ascertaining its true flashing-point. Degrees of temperature are according to Fahrenheit’s thermometer.

I.—NATURE OF THE TEST APPARATUS.

The apparatus consists of the following parts:—
(1) An oil-cup.
(2) A cover, with slide, test-lamp for oil, or test-flame arrangement for use with gas, and clockwork arrangement for opening and closing the holes in the cover, and for dipping the test-flame.
(3) A water bath or heating vessel.
(4) A tripod (with jacket), and spirit-lamp or gas arrangement for heating the water bath.
(5) A round bulb thermometer for testing the temperature of the oil, with scale ranging from 55 degrees to 160 degrees.
(6) A long bulb thermometer for testing the temperature of the water, with scale ranging from 90 degrees to 220 degrees.
(7) A mercurial or aneroid barometer.

The oil-cup is a cylindrical flat-bottomed vessel, 2 in. in diameter, 2½ in. in height (internal), made of gun-metal or brass (17 B.W.G.), and tinned or silvered inside. It is provided with a projecting rim, ½ in. wide, ⅜ in. from the top, and 1¾ in. from the bottom of the cup, on which it rests when inserted in the water bath. A gauge is fixed on the inside of the cup to regulate the height to which it is to be filled with the sample under examination. The distance of the point from the bottom of the cup is 1½ in. The cup is provided with a close-fitting overlapping cover, made of brass (22 B.W.G.), which carries the thermometer, the test-lamp, or test-flame arrangement, and the adjuncts thereto. The test-lamp, which has a spout, the mouth of which is ¹⁄₁₆ in. in diameter, or test-flame arrangement, is suspended upon two supports by means of trunnions, which allow it to be easily inclined to a particular angle and restored to its original position. The socket in the cover, which is to hold a round bulb thermometer for indicating the temperature of the oil during the testing operation, is so adjusted that the bulb of the latter is always inserted to distance of 1½ in. below the centre of the lid.

The cover is provided with three holes—one in the centre (0·2 square inch) and two smaller ones (each 0·06 square inch) close to the sides. These are closed and opened by means of a pivoted slide. When the slide is moved so as to uncover the holes the suspended lamp, or test-flame arrangement, is caught by a projection fixed on the slide, and tilted in such a way as to bring the end of the spout or test-flame just below the surface of the lid. As the slide moves back so as to cover the holes the lamp returns to its original position. Upon the cover, in front of and in a line with the nozzle of the lamp, is fixed a white bead, the diameter of which represents the size of the test-flame to be used.

The water bath or heating vessel consists of two flat-bottomed copper cylinders (24 B.W.G.)—an inner one of 3 in. diameter and 2½ in. height, and an outer one of 5¼ in. diameter and 5¾ in. height; they are soldered to a circular copper plate (20 B.W.G.) perforated in the centre, which forms the top of the bath, in such manner as to enclose the space between the two cylinders, but leaving access to the inner cylinder. The top of the bath projects both outwards and inwards about ⅜ in.—that is, its diameter is about ¾ in. greater than the body of bath, while the diameter of the circular opening in the centre is about the same amount less than that of the inner copper cylinder. To the inner projection of the top is fastened, by six small screws, a flat ring of ebonite, the screws being sunk below the surface of the ebonite to avoid metallic contact between the bath and the oil-cup. The exact distance between the sides and bottom of the bath and the oil-cup is ½ in. The bath is therefore so constructed that when the oil-cup is placed in position an air-space or air-chamber intervenes between the two; consequently, in applying the test to oils flashing below 115 degrees the heat is transmitted gradually to the oil from the hot water, through the air-space. The water bath is fitted with a socket, set