Pipework. TS-777 Excavation of any section of the work shall not start until a complete set of the pipes and components for that section is available. TS-778 The trench shall be as narrow as practicable but not less than the pipe diameter plus 300 mm from each side to permit adequate compaction of side fill. Adequate working space shall be left for pipe jointers and joint holes shall be formed where necessary.
Pipework. All pipework, connections and delivery systems must conform to British Standard 6572. Pipes laid underground must be buried to a minimum depth of 750mm. Pipe laying may be done by trenching, mole plough or sub-soiler, depending on soil type and machinery available. The ground must be reinstated to original levels with the top soil returned to the surface. Where open ditches are crossed, the pipe must be covered by a tubular steel guard or sleeve pipe and laid 600 mm below the ditch bottom to allow for ditch cleaning. Where farm tracks are crossed, the water pipe must lay on a 75mm bed of sand and be covered by sand to a depth of 100mm before being overlain by backfill. The water supply must be controlled by isolating valves/stop cocks at the point of supply and at each trough. The isolating valves/stop cocks must be protected against frost, they must be easily accessible and protected from damage by livestock. Where they are buried, this must be at a minimum of 600mm and must be easily accessible through a covered inspection chamber. Underground pipework must not damage sites of archaeological or historic interest. Any spoil must not be used to fill and level adjacent wet areas or be put on any sites of archaeological or ecological importance. The water supply must be maintained in good condition for the duration of the agreement. WATER TROUGH The water trough should be placed in a free draining area to minimise damage by poaching. It should not be placed on or near sensitive habitats or species and the area should ideally be a sacrifice area. The trough should not be located near watercourses, on areas vulnerable to soil erosion or on or near a site of archaeological or historic interest. Troughs made of galvanised steel must comply with British Standard 3445. Other materials such as concrete or moulded polyethylene may be acceptable if agreed with your Natural England contact and if it complies with the appropriate British Standard. The water trough must be installed on a level base so it does not spill water. The trough must either be connected to a water supply or it must be supplied from a xxxxxx on a regular basis. The water trough must be maintained in good condition for the duration of the agreement.
Pipework. PE100 PN12.5 delivery mains have been specified but may be substituted with stainless steel pipes. Stainless steel pipes, bends, tapers, flanges, brackets and associated butt-welded fittings shall be fabricated from 316 graded, schedule (SCH) 10S stainless steel and installed in accordance with the Contract Drawings, approved Contractor supplied drawings, WSA 04 Part 3 Clause 25.3 and AS 5200.053. Flanges shall be a minimum thickness of 13mm or 16mm, as nominated in the Contract Drawings and shall be drilled in accordance with Table D of AS 2129. All flanged fittings shall be provided with the appropriate flange gaskets, stainless steel bolts, nuts and washers. All bolts, nuts and washers shall have metric threads as per AS 1111, AS 1112 and AS 1237, respectively.
Pipework. Conformance testing associated with all pipework within the SPS facility shall be carried out in accordance with the requirements outlined in Clause 3 of this Technical Specification.
Pipework. The following supply items shall be supplied and installed by others: • The inlet under the floor and inside the inlet structure of the tank • The sludge draw-off pipe • The effluent pipe work The pipes shall be manufactured from 304 SS. The contractor under this Contract must, however, supply and install the scum discharge pipe up to the scum discharge manhole adjacent to the tank, which will be built by the Civil Contractor.
Pipework. All suction and delivery pipes shall be connected to the pump casing by means of flexible connections. All flexible connections shall be installed as close to the pump’s casings as possible, and in any event, shall be between the suction valve and the pump casing and delivery non-return valve and the pump casing. In all cases the flexible connection shall be in the section of piping of smallest diameter. Double Victaulic joint are generally preferred for flexible connections, but approved re-enforced rubber bellow units are acceptable for low-pressure services. All valves and pipework external to the pump casing and separated there from by means of flexible connections shall be securely anchored to prevent movement.
Pipework. All pipe work shall be galvanized seamless steel to BS 1387 heavy grade. Pipework with screw fittings shall be supplied with screw and socket ends. Pipework for gas and arc welding, where permitted by the Engineer or his Representative, shall be supplied with plain ends, bevelled for butt welding. All pipework and fittings shall be to NFP A 14. For pipe work installation, hangers, welding, etc., details refer to Section 14-22 of these Specifications. Under tiles, steel pipe work shall be protected against corrosion by two layers of hessian and tar to the Engineer or his Representative IS approval. Valves, strainers, etc. shall be as specified in Section 3.11 of this Specification.
Pipework. 1. All the pipework supplied in one contract and complying with this specification shall be designed, manufactured, fabricated, erected and tested to comply with the contractually defined latest edition of a single national or international code and its associated standards. Mixing of codes from different countries of origin is not acceptable.
