UK: BSRIA has updated to its water treatment guide for closed cooling and heating to bring it up to date with current technology and practices and latest standards and guidance.
Last updated in 2013, the new edition – Water Treatment for Closed Heating and Cooling Systems (BG 50/2021) – also brings it into line with Pre-Commission Cleaning of Pipework Systems (BG 29/2021), which was published in February.
While chemical water treatment – the dominant process in the UK – is covered in depth, other techniques are also described. These include pre-treatment of fill water, removal of dissolved gases, pH management, solids removal and filtration, galvanic anode cathodic protection/electrochemistry, bacteria and biofouling inhibition by biocides
Expanded guidance has been provided on the roles and responsibilities of those typically involved with water treatment in closed systems: planners of water treatment programmes, maintenance water treatment specialists, day-to-day system operators, building owner/operators and remedial cleaning specialists.
The suggested water quality analyses and guidelines have been updated, including the addition of corrosion rates. Additional guidance has been provided on corrosion monitoring and on-site testing, including the use of test kits.
The technical content of the publication has been written by water microbiology consultant Dr Pamela Simpson with the help of a steering group, including representatives from the British Chemicals Association (BCA), the Closed Systems Control Association (CSCA), the Industrial and Commercial Heating Equipment Association (ICOM), the Institute of Corrosion (ICorr), the Institute of Workplace and Facilities Management (IWFM) and the Water Management Society (WMSoc).
BG 50/2021 is available from the BSRIA Bookshop, with free downloads for BSRIA members.