1961-HKRS30-8-52_Part04 — Page 11

Repairs to tanks on tank wagons.

Petrol mol to be unloaded

Irom tank

wagon direct

into fuel

Lank

Generat provisiona

relating to tank wagons.

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(b) adequate provision shall be made to prevent the accumulation

of a static charge of electricity.

142. On any tank wagon, no tank or self-contained comparimeĽ. thereof which has a capacity exceeding forty gallons shall be repairal in any manner involving the use of hot rivets or any other source of artificial heat, until the tank has been certified as free from inflammable vapour by an approved person.

143. Petroleum spirit shall not be unloaded from any tank wagon direct into the fuel tank of any vehicle.

144. (1) On any tank wagon-

(a) the engine, if any, shall be of the internal combustion type: (b) the engine, fuel tank, batteries and exhaust system, if any, shall be effectively screened from any tank by a fire-resisting shield. which shall project downwards to a point not more than twelve inches from the ground and upwards-

(i) to a point level with the top of the tank; or

(i) where the roof of the driver's cab is constructed of fire- resisting material without any opening, to a point level with the roof of the driver's cab;

(c) a bonded electrical connexion shall be established between the vehicle and any tank prior to and during loading into or discharging from any such vehicle;

(d) any fuel feed pipe shall be fitted with a quick-action cut-off valve in an easily accessible position and clearly marked as such:

(e) a space of at least six inches shall intervene between the frost of the tank and the fire-resisting shield required by this regulation and such space shall at all times be kept clear and unobstructed;

( any tank, if not a component part of the frame of the tank wagon, shall be securely attached to such frame or, if the tank wagon complies with this regulation, to a fixed cradle: (g) any tank having a capacity exceeding one thousand gallon shall be divided into self-contained compartments, each having a capacity not exceeding eight hundred gallons or shall be fitted with efficient baffle plates to prevent surge;

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(h) any draw-off pipe shall be fitted with an internal valve, a strong and secure tap and a strong and secure screw-cap and any such tap-

(1) shall be either enclosed in a strong locked box made of fire-resisting material, or protected against impacts by the frame of the chassis of the vehicle or by strong steel guards;

and

(ii) if situated at the rear of the tank wagon, shall be pro- tected by the rear cross-members of the frame, protection being afforded also when necessary to the lower rear portion of the tank:

() any filling pipe shall, unless the cover of the filling opening thereof is fitted with a lock, project into the tank nearly to the bottom of the tank, and shall terminate in such a way as to provide at all times a liquid seal at the bottom of the pipe:

() any dipping pipe shall project into the tank to the bottom

thereof;

(*) any ventilating opening, other than a dipping pipe, shall be covered with fine brass wire gauze, having a mesh of not less than twenty-eight to the linear inch and be protected by a cover or by a vacuum pressure relief valve when not in use; (i) the total capacity of all tanks shall not exceed four thousand gallons;

(i) the total capacity of all tanks shall not exceed two thousand five hundred gallons of highly inflammable liquid; (the frame, tanks and fittings shall be constructed of fire. resisting materials and shall be maintained in good condition. (2) If the tank wagon is fitted with a steel cab, the rear of such cab shall be deemed to constitute part of the fire-resisting shield for the purposes of paragraph (T).

(3) Paragraph (1)(6) shall not apply to any fuel tank which.... (a) is fitted with a fuel feeding apparatus designed to lift fuel from the fuel tank to the engine and screened from the body of the vehicle by a fire-resisting shield;

(b) is protected against impacts by the frame of the vehicle or

by strong guards;

() has a lock fitted to the filling pipe cover; and

(d) contains only fuel having a flash point exceeding 150*

Fahrenheit.

(4) Paragraph (1)(h), so far as it relates to the provision of an interual valve, shall not apply to any draw-off pipe connected to a tank which is emptied by a syphon system.