The catastrophic failure of DN2500 pipe at a Welsh power station, Uskmouth B, prompted remedial action using the Amex Vario Seals. The burst occurred at a joint between two GRP pipes and destroyed a 3m section of the power plant cooling system last year. This resulted in the partial collapse of a car park and severe flooding of the turbine hall, causing a 28 day shutdown. Following two surveys of the damaged pipeline and the remaining pipe joints in the system, the seals were recommended to ensure the long-term security of all the suspect joints. 34 seals were installed at joints considered at risk, following ovality and gap measurement at each joint in almost 800m of GRP pipework. 7 interlocking Varios were used. Vario is essentially a watertight, rubber seal fixed by stainless steel hoops. When they are connected in series the end result is a mechanically secured rubber liner that can accommodate considerable pipe movement and crack growth.
Uskmouth Power Station
|Application area||Cooling Water|
|Number of seals||N/A|