10. LICENSING OF PLUMBERS.
695
Every person, except the authorized officers of the water authority, who intends to carry out for a consumer any work in Connexion with the construction, alteration Or repair of inside services or tire services which are to deliver water supplied from the waterworks must first obtain a licence from the water authority on Form 0,
Such licence will be granted only to persons (or to firmns employing persons) who hold certificates from any of the following:-
The Royal Sanitary Institute,
The Institute of Plumbers,
The City and Guilds of London,
or to persons (or firmus employing persons) who, in the opinion of the water authority, possess other suitable quantications.
Such licence shall be for one year or part of one year in the first instance, and shall be renewable annually on the 1st of January at the discretion of the water authority, and subject to the payment advance of the fees laid down in Appendix I. The water authority may revoke any licence at any time, without compensation to the holder, in the event of the holder acting in any way contrary to the provisions of these regulations.
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11. STANDARDS.
(a) Pipes.
(1) Pipes of cast iron, wrought iron or other approved material as hereinafter specified may be used in any part of an inside service or fire service.
(2) Cast iron pipes shall comply with the requirements of the latest British standard specification for class C cast iron pipes.
(8) Wrought iron pipes shall be of water quality and galvanized, and shall comply with the requirements of the latest British standard specification for such pipes.
(4) Copper pipes or pipes of other material shall comply with the requirements of the latest British standard specification for such pipes.
(5) Lead pipes will not be permitted for the conveyance of water supplied from the waterworks.
(6) The water authority shall have the right at any time to weigh, measure or otherwise test any pipes being used for an inside service or fire service to ascertain if they are up to standard.
(b) Taps, ball cocks and stop cocks.
(1) All taps, ball cocks and stop cocks shall conform to the latest standards laid down by the British Waterworks Association.
(2) Iron taps, ball cocks and stop cocks shall not be used without written permission from the water authority.
(3) Samples of taps, ball cocks and stop cocks of approved type may be seen at the waterworks workshops.
(4) No tap, ball cock or stop cock shall be used until it has been approved and stamped by the water authority. The licensed plumber shall at his own cost deliver all such fittings to the waterworks workshops and remove them after they are stamped.
(5) A fee as specified in Appendix I shall be charged for each article stamped by the water authority.
(c) Cold water cisterns.
Cold water cisterns for the storage of water supplied from the waterworks shall be watertight and have close fitting covers which shall not be airtight. They shall be constructed of concrete, iron or other approved material. Where iron is used it shall be galvaniz. ed or otherwise protected against corrosion in a inauer to be approved by the water authority. Every cistern shall have a ball cock with a stop cock behind it and an overflow pipe. The ball cock shall shut off the supply when the water level is 2 inches below the over flow pipe and the nose or outlet of the ball cock shall be above the
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