WET News

TECHKNOW Two levels of maintenance are available – Standard Care and Total Care Main-tenance schedules are flexible to meet process and product requirements The analysers provide continuous automatic measure-ment, with up to six readings every hour The aluminium monitors are all on the Total Care contract as these are critical to our performance NEED TO KNOW 1 Scotland's geography poses particular challenges – with a long coastline of 6,800 miles 2 ABB water quality analysers are used across Scottish Water's operating area to monitor and control levels of ammonia, aluminium, colour, iron, manganese and phosphate 3 Each Scottish Water region is responsible for sourcing its own maintenance and care contract THE VERDICT "ABB service engineers will go where we need them to go – our most remote site is Loch Killin but even here, the company commits to repair within three days" Billy Gordon, Scottish Water needs. We required several return service visits for particular analysers, incurring extra costs. To solve this, we identi ed the most critical analysers and adopted the Total Care contract to cover them – now breakdown cover is included for all of these devices, saving on expenditure. For the less critical analysers, we chose to remain on the Standard Care contract. "The aluminium monitors are all on the Total Care contract as these are critical to our performance, and we would face heavy criticism if we failed to monitor this parameter and our water quality reduced as a consequence." The contract runs from April to March. "Throughout the contract period, we have the security of knowing that our analysers are being properly looked a€ er," says Caig. "ABB staƒ visit at the end of the contract to see if we need any enhanced care, as we can have either type of care package for each individual monitor." Water quality Billy Gordon is senior treatment o… cer for Scottish Water's West region, which includes the Balmore Water Treatment Works, the largest in Scotland. Balmore uses ve aluminium analysers, ve colour analysers and one phosphorous analyser. Again, the care package is tailored to the most critical analysers. "High aluminium content means bad quality water," says Gordon. "The Drinking Water Quality Regulator in Scotland de nes that a low level of aluminium is 100 microgrammes per litre, while anything above 200 microgrammes per litre is breaching the limit. With ABB analysers, we can keep our levels in the range of 110 to 365 microgrammes. As well as aluminium monitoring and the need to keep these analysers in working order, we also need to prioritise the largest sites, which are most critical simply due to the large number of analysers at each one." Gordon nds that ABB is more than ready to t in with his needs. "ABB service engineers will go where we need them to go – our most remote site is Loch Killin but even here, ABB commits to repair within three days. The analysers are running well now, and the ABB service programme means that there have been no breakdowns over the last year." MAY 2017 WET NEWS 19 PROJECT SPECS Ensure the many water quality analysers across Scottish Water's network are kept serviceable for the maximum amount of time Conduct regular maintenance and servicing Prioritise the largest sites, which are most critical due to the large number of analysers at each one One drink, one month. Could you drink nothing but water this January? Sign up to drink Just Water for two or four weeks and help WaterAid reach everyone everywhere with safe water and sanitation by 2030. T: 020 7793 4594 E: justwater@wateraid.org www.wateraid.org/just-water WHAT YOU ' RE MADE OF One drink, one month. Could you drink WHAT WHAT YOU ' RE MADE OF SHOW US WA_JW17_advertAW_88x130_WWT.indd 1 14/11/2016 17:02

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