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Edward Lowton
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Commissioning made simple
10 September 2014
Installing mechanical key interlocks is often one of the last tasks before commissioning and handover of a project. Occasionally, interlocks can impede this process by preventing the valve settings needed to create the process conditions (hydro-testing) for commissioning of piping systems.
Smith Flow Control believes that commissioning of interlock systems should ideally be done and completed by one responsible party – particularly when it comes to management of the operating keys.
The company’s ComKey offers a solution. It defers the need to fit the interlocks until all mechanical commissioning tasks are accomplished.
SFC Interlocks are usually supplied with one key trapped and one key free. However, where necessary, they can be supplied with a factory-fitted ComKey that allows random operation of the interlock irrespective of the coded logic of the interlock system.
The ComKey is a ‘one-time-only’ product – once the key is removed after testing/commissioning, it can’t be re-used. The installed interlock will only then accept its dedicated coded key for normal operations.
