Testing for Chlorine and Bromine
May 2024 There appears to be some confusion arising from the following paragraph found in the revised HSG274 part 1, Info Box 1.5: Biocide types and application: When using the DPD No 1 methodology it is essential that the result is pH-adjusted to account for the conversion of hypochlorous and hypobromous acids into their less effective hypochlorite and hypobromite ions, when higher pH levels are present. This is important, as the DPD No 1 test is not specific to either and will pick up some other oxidants that may be present in the syRead More
Remote Monitoring Guidance from the Water Management Society
May 2024 The Water Management Society (WMSoc) recently published the second part of its guidance on remote monitoring of water systems. The free to download document is titled Guidance for End Users on Remote Temperature Monitoring Systems - Part Two Interpretation and management of data. It provides some much needed guidance to end users on the what the data means, aRead More
LCA Audits, Current Findings and Timelines
March 2024 LCA membership includes the requirement to have an annual external audit by one of our occupationally competent assessors. The LCA have evolved our auditing documents over the last few years and now look in more depth and detail at our Member’s work. The audit questions break down the Member’s process and procedure (their plan) and the output evidence (following their plan) into a series of questions. There is more detail than before and as a result we have seen Members with more non-conformances to the Code of Conduct anRead More
HSE’s HSG274 Part 1 The Control of legionella bacteria in evaporative cooling systems
26 March 2024 There is a new edition to part one (only) of HSE’s HSG274 The Control of legionella bacteria in evaporative cooling systems. (Second Edition. March 2024). You can read the new edition as published on the HSE website here.Read More
Composite Samples – Something that should never happen
A composite or bulk sample is where water from more than one asset is added to a bottle and submitted to the laboratory for testing. Since the 2020 service standards updates the LCA has stated that these samples should NEVER be taken. The details on composite samples can be found in Information Box 3 of the Legionella Sampling and Testing Service Delivery Standard:Read More