Document name: Maintenance & Operational Procedures for the control of Legionella, water hygiene, ‘safe’ hot water, cold water, drinking water and non-drinking water. Document type
Water Supply [Water Fittings] Regulations 1999
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- 2.3 BS8558:2011 BS EN 806 (parts 1 to 5)
- 2.3.1 Approved Materials
- 2.4 External Contractors
2.2 Water Supply [Water Fittings] Regulations 1999On 1 July 1999, the Water Supply [Water Fittings] Regulations replaced the Water Byelaws in governing the prevention of waste, misuse, undue consumption and contamination of public water supplies in domestic and commercial plumbing installations and represents important protection for public health and the environment. In Scotland these issues were implemented by the Scottish Water Byelaws [2000]. The Regulations are based on performance standards, e.g. British Standards or those European Standards being mandated under the Construction Products Directive. The Regulations are not retrospective and so will not apply to water fittings that were installed in accordance with the Byelaws before 1 July 1999. The Regulations are enforced by water companies, and further advice should be sought from them or from the Water Regulations Advisory Scheme on 01495 248454 or from its website at www.wras.co.uk. The Scheme, has produced a guidance document to provide a more detailed explanation of the requirements The Regulations introduced a new specification to prevent the backflow of water from 1 May 2000. This brings the UK into line with the emerging harmonised European Standard. The system consists of five fluid categories which reflect the potential toxicity of the downstream fluids. These categories relate to the risk posed to public health should fluids contaminate drinking water. The specification then equates each fluid category to the range of suitable backflow prevention devices. Particular reference should be made to the determination of fluid categories when considering alternative water treatment systems. The addition of a treatment chemical to drinking water may result in the need for a back flow device appropriate to the treatment added (subsequent fluid category). 2.3 BS8558:2011 & BS EN 806 (parts 1 to 5)BS 8558:2011 Guide to the design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages. BS 8558:2011 provides complementary guidance to BS EN 806. It is a guide to the design, installation, testing, operation and maintenance of services supplying water for domestic use within buildings and their curtilages. BS 6700 was withdrawn in July 2012. BS 8558 is now the lead document in the area of domestic water supply. The following parts of BS EN 806 include: BS EN 806-1:2000
BS EN 806-2:2005 Specifications for installations inside buildings conveying water for human consumption. ‘Design’ BS EN 806-3:2006 Specifications for installations inside buildings conveying water for human consumption. ‘Pipe sizing. Simplified method’ BS EN 806-4:2010 Specifications for installations inside buildings conveying water for human consumption. ‘Installation’ BS EN 806-5:2012 Specification for installations inside buildings conveying water for human consumption. ‘Operation and maintenance’ 2.3.1 Approved MaterialsAny materials that come into contact with the water in a hot and cold water installation must comply with the requirements of the Water Supply (Water Fittings) Regulations 1999. A list of products and materials that have been assessed for compliance with the requirements of these Regulations is given in the current edition of ‘Water Fittings and Materials Directory’, which is updated every six months. Materials of construction should be selected to take account of water quality and its potential corrosive properties. The materials generally used for the conveyance of water in healthcare premises are copper, steel, stainless steel and plastics. Lead is no longer allowed under the Water Supply (Water Fittings) Regulations 1999 for pipework or solders. Substances leached from materials of construction of pipes, cisterns or other water fittings in contact with water must not adversely affect the quality of water stored or drawn for domestic or food production purposes (Water Supply (Water Fittings) Regulations 1999). Jointing compounds or tape, which may be one of the many proprietary makes, should be used according to the manufacturers’ instructions. Compounds containing red lead must not be used because of the danger of contamination of the water. Jointing compounds must not support microbial growth, should comply with BS 6920-1:2000, and should be listed in the ‘Water Fittings and Materials Directory’ Specific examples of materials not to be considered for use [unless where exceptions noted]
2.4 External ContractorsA specification appertaining to new works will be produced. To include:- [a] a standard form within the contract documentation to define roles, responsibilities and procedures of parties concerned; [b] Submission where applicable of risk assessments and method statements with relation to compiled schedules. [c] Evidence of competency. For the organisation they should be members of the LCA and be on WRAS ‘Approved Plumber Scheme’ register. Then evidence of competence of each member of staff who will working on the water systems. Directory: documents documents -> Concept stage documents -> Concept stage documents -> The great global switch-off documents -> Nonprofit grant application documents -> The Truth about the Rwandan Genocide documents -> Annual InStructional unit plan documents -> Chaos equipment included Download 1.43 Mb. Share with your friends:
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