Name: BS CP312-3(1973) : 1973
Brand: BSI

BS CP312-3(1973) : 1973

Superseded

CODE OF PRACTICE FOR PLASTICS PIPEWORK (THERMOPLASTICS MATERIAL) - POLYETHYLENE PIPES FOR THE CONVEYANCE OF LIQUIDS UNDER PRESSURE

Superseded date

12-10-2010

Published date

11-23-2012

Publisher

British Standards Institution

Foreword
1. General
1.1 Scope
1.2 Classification of polyethylenes
2. Working pressure and effects of temperature
3. Limitations
4. Flow properties
5. Jointing procedures
5.1 General
5.2 Metal fittings
5.3 Plastics fittings
5.4 Thermofusion welding
6. Bending
6.1 Cold bending
6.2 Hot bending
7. Storage, handling and transport
7.1 Storage
7.2 Handling
7.3 Transport
8. Inspection
9. Installation
9.1 General
9.2 Installation of buried pipes
9.3 Above ground installations
9.4 Support spacings
9.5 Expansion and contraction
10. Test pressures and testing
10.1 Hydrostatic test pressures
10.2 Hydrostatic testing
11. Repairs
Tables
1. Reduction in working pressures for polyethylene
pipes at elevated temperatures
2. Recommended spacing of support centres for
horizontal polyethylene pipes
Figure
1. Heated tool for fusion welding

Provides guidance on the proper application and installation of polyethylene pipe for the conveyance of liquids under pressure. The choice of materials or particular applications is covered. Does not recommend the use of polyethylene pipe for any particular purpose. The use of plastics pipes in services supplied from the mains of water undertakings is governed by the byelaws of the undertakings and these shall be strictly observed. Not recommended for use in ground that is, or might be, liable to severe gas contamination. Covers working pressure and effects of temperature, limitations, flow properties, jointing procedures, bending, storage, handling and transport and inspection.

Committee	PRI/88
DocumentType	Standard
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS 5955-7:1983

05/30113497 DC : DRAFT APR 2005	BS 5391-1 - ACRYLONITRILE-BUTADIENE-STYRENE (ABS) FITTINGS FOR USE WITH ABS PRESSURE PIPE - PART 1: SPECIFICATION FOR FITTINGS FOR USE WITH PIPE FOR INDUSTRIAL USES
BS 6572:1985	Specification for blue polyethylene pipes up to nominal size 63 for below ground use for potable water
BS 7281:1990	Specification for polyethylene pipes for the supply of gaseous fuels
BS 4346-3:1982	Joints and fittings for use with unplasticized PVC pressure pipes Specification for solvent cement
BS 6700(2006) : 2006	DESIGN, INSTALLATION, TESTING AND MAINTENANCE OF SERVICES SUPPLYING WATER FOR DOMESTIC USE WITHIN BUILDINGS AND THEIR CURTILAGES - SPECIFICATION
BS 3867:1987	Method of specifying outside diameters and pressure ratings for pipe of thermoplastics materials (inch series)
BS 6700:1997	Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
BS 6880-2:1988	Code of practice for low temperature hot water heating systems of output greater than 45 kW Selection of equipment
BS 5955-6:1980	Plastics pipework (thermoplastics materials) Code of practice for the installation of unplasticized PVC pipework for gravity drains and sewers
BS 6700:1987	Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
BS 3351:1971	Specification for piping systems for petroleum refineries and petrochemical plants
BS 6785:1986	Code of practice for solar heating systems for swimming pools
BS 7336:1990	Specification for polyethylene fusion fittings with integral heating element(s) for use with polyethylene pipes for the conveyance of gaseous fuels
BS 6730:1986	Specification for black polyethylene pipes up to nominal size 63 for above ground use for cold potable water

BS CP312-1(1973) : 1973	CODE OF PRACTICE FOR PLASTICS PIPEWORK (THERMOPLASTICS MATERIAL) - GENERAL PRINCIPLES AND CHOICE OF MATERIAL
BS 3284:1967	Specification for polythene pipe (Type 50) for cold water services
BS CP99(1972) : LATEST	FROST PRECAUTIONS FOR WATER SERVICES
BS 3796(1970) : LATEST	POLYTHENE PIPE (TYPE 50) FOR GENERAL PURPOSES INCLUDING CHEMICAL AND FOOD INDUSTRY USES
BS 864-3:1975	Capillary and compression tube fittings of copper and copper alloy Compression fittings for polyethylene pipes