F345 TESTING
F345.2.3 Special Provisions for Testing.
When piping subassemblies are tested separately,consideration should be given to performing an additional leaktest of the assembled piping system prior to initial operation.The test fluid should be nonhazardous to the process and the people performing the examination.Examination for leaks should be at all joints that have not been previously examined for leaks,or that have been reassembled after being examined for leaks.Examples include flanges where isolation blanks were removed after the leak test and joints where in strumentation or other components were removed for the leaktest.