【Daily Question】Utilities - Mechanical & Electrical - 20190920

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In accordance with the requirements for supervision work outlined in the General Specifications for the Construction and Acceptance of Mechanical Equipment Installation Projects, which of the following practices is correct? A. For demolition equipment, used equipment, mechanical products that fail quality checks upon leaving the factory, and mechanical equipment whose precision does not meet the required standards, those products should be returned to the supplier who is requested to resend them. B. Equipment that comes with a certificate of conformity issued at the time of manufacture can be installed after passing the inspection upon unboxing. C. For testing instruments equipped with scales or digital displays, their precision grade and maximum division value should not be lower than the minimum allowable deviation values for the items being tested. D. During the preparation phase for installation, inspections and supervision should be carried out in accordance with the installation procedures and inspection requirements specified in the approved construction plan; moreover, the contractor’s records of self-inspections, mutual inspections, and professional inspections during installation must be verified. Answer: D