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Water Treatment for Closed Heating and Cooling Systems (BG 50/2013)

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Water Treatment for Closed Heating and Cooling Systems (BG 50/2013) guide partially replaces Water Treatment for Building Services Systems (AG 2/93) with respect to closed system applications. This guide provides an introduction to current theory and practice 

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Full description

Water Treatment for Closed Heating and Cooling Systems (BG 50/2013) guide partially replaces Water Treatment for Building Services Systems (AG 2/93) with respect to closed system applications.

This guide provides an introduction to current theory and practice of water treatment in closed building systems. It is intended for use by design engineers, installing contractors and the maintenance staff responsible for looking after the completed systems. In particular it will help facilities managers and others choose the most appropriate water treatment for their systems.

The treatment of water in modern closed heating and cooling systems is essential for the avoidance of microbiological fouling (biofouling), corrosion and scale. These problems can result in energy wastage, poor system performance and the need for early replacement of plant and components. Many facilities managers have minimal understanding of how water treatment works, what it is intended to achieve and the consequences of ineffective water treatment can sometimes be disastrous.

The objectives of a water treatment programme are to maintain the system efficiency and cleanliness and prolong system life. The guide explains how to achieve this through:

  • system design
  • installation, testing and pre-commission cleaning
  • application of a correct and appropriate water treatment programme
  • effective management of the programme

The technical content of the publication has been compiled by a steering group comprising of BSRIA, the British Association for Chemical Specialities, the Water Management Society, the Commissioning Specialists Association and the United Kingdom Water Treatment Association.

The guidance is consistent with (BG 29/2012) Pre-Commission Cleaning of Pipework Systems, BS 8552:2012 Sampling and monitoring of water from building services closed systems. Code of practice and the European Biocidal products Regulation (528/2012, commonly known as BPR).

Publication details

AuthorEdited by Reginald Brown
PublisherBSRIA
ISBN9780860227243
No. of pages104
Number of books in set1
Date publishedOctober 2013

FAQs

Q

I am aware that Figure 1 Dosing pot, on page 11 of BG 50/2013, shows an additional ‘safety’ check valve between the funnel and the body of the dosing pot. I personally and professionally feel that by adding a valve as a ‘safety’ feature, such a valve must be ‘safe’. The real issue for me is that it creates a false sense of security, as the intent/statement of protecting from a face full of chemical is incorrect. Not having a valve is better than having one that does not work as expected – there is no false security and if the operator follows the manufacturer’s O&M then the risk is minimised appropriately.

A

Figure 1 illustrates one possible configuration of a generic dosing pot and is not intended to represent a recommendation or specification.  There are various possible configurations of dosing pot and differing opinions in the industry on the benefits of including a check valve or not.  Where a diagram or illustration is provided to support a specific recommendation this should be evident in the text.  In this case the choice is left to the system designer.

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