A huge change is happening at Dwr Cymru Welsh Water, they are currently installing a brand new pressure relief valve that is incredibly innovative. The new valve had been designed and installed to help Dwr Cymru in its maintenance of surge vessels in South and Mid Wales.
The new pressure relief valve assembly line has been designed to allow the team at Dwr Cymru to carry out inspections whilst in service without stopping the system and therefore causing any delays. The new pressure relief valve assembly was designed by pressure relief valve manufacturer Quantum Engineering Developments.
Currently Dwr Cymru has fitted pressure relief valves in over fifty per cent of surge vessels currently in use. The pressure relief valves have also been supplied by Quantum Engineering Developments who currently build those specific valves in the United Kingdom.
Now that so many vessels have been fitted with the pressure relief valves, inspections now take considerably less time than before. At the moment inspections are carried out once a year and this significant time saving can be better spent in other areas of the business.
For those that are unaware of what surge vessels do, let us explain..
You can currently find surge vessels installed in a number of sewerage and water networks. Their main aim is to reduce pressure surges in the pipes. As you can imagine, if a pipe was to burst or leak and a utility company did not have a surge vessel, that utility company could face an extremely pricey bill at the end of the year. In fact, in just one single year a utility company could spend millions on just water waste and fixing damaged pipes. Imagine how that would affect their profit margins?
This is why it is so important that surge vessels are serviced once a year. There are so many legal requirements and regulations associated to them, and well so there should be. After all, it is our drinking water that we could risk getting contaminated.
Before this new system by Quantum Engineering Developments, the inspection involved depressurising the vessels and then draining them. The vessel would then be sent to a third party inspector who would carry out the inspection.
Previously the pressure relief valves were positioned at the top of the vessel, now the valves can be found at the bottom of the vessel. This means that the inspector is able to check and inspect the vessel at ground level, this takes away any working at height risk.
As there is now two pressure relief valves, (previously there was only one) the vessel is also allowed to stay pressurised. Previously it had to be switched off. This means that the inspector can simply switch between valves to carry out the check. As you can imagine this obviously speeds up the time it takes for each vessel to be inspected.