to the pig trap door an Inconel overlay is usually used to mitigate the risk of failure. Our client had recently supplied four pig traps to an operator which did not include the Inconel overlay on the doors. Upon delivery of the pig traps, the operator asked our client to supply further information regarding the risks arising from corrosion on the doors and to provide assurance that the design of the pig trap doors was suitable for a 30 year design life. The solution We were contracted, as an independent third party, to perform a corrosion risk assessment to quantify the risk of unacceptable levels of corrosion occurring on the pig trap doors over their design life, taking into consideration their expected operating conditions. We identied a range of corrosion mechanisms that could potent

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