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Inspection & Testing

Derek Eccles

I am a project manager, constructing new waste water treatment works, for a water company. The contractor building the new works has provided a program which has 4 months between  part 1 (dead testing) and part 2 (live testing) of the NICIEC certification. In between these dates, the contractor will test and commission of the plant and equipment e.g. pumps, actuated valves, instrumentation, screens etc.

Would it be correct to say, this does not comply with the wiring regulations ? 

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    Derek Eccles: 
    “Difficult to see how live tests could be undertaken much before commissioning,”

    Why ?

    OK, you could leave it as long as you like, but once the live tests have been completed, the commissioning can begin. As Mike says, it is inappropriate to start commissioning before the installation has been verified. A functional check is the last element of initial verification.

    Even dead testing, especially insulation resistance, should continue until the fixed wiring is complete.

    What seems to be proposed is “big bang” testing. If that goes to plan, one might ask, “What is the point of live testing other than to give the contractor some numbers to put on the certificate?”

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  • 0

    Derek Eccles: 
    “Difficult to see how live tests could be undertaken much before commissioning,”

    Why ?

    OK, you could leave it as long as you like, but once the live tests have been completed, the commissioning can begin. As Mike says, it is inappropriate to start commissioning before the installation has been verified. A functional check is the last element of initial verification.

    Even dead testing, especially insulation resistance, should continue until the fixed wiring is complete.

    What seems to be proposed is “big bang” testing. If that goes to plan, one might ask, “What is the point of live testing other than to give the contractor some numbers to put on the certificate?”

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