Api-577- Questions And Answers

To minimize burn through, the first weld pass to equipment or piping less than ________________ thick should be made with ________________________ diameter welding electrode to limit heat input. - 1/2 in.,3/16 in. or smaller. - 1/4 in.,3/32 in. or smaller. - 1/4 in., 3/16 in or smaller. - ... - Answer-1/4 in.,3/32 in. or smaller. What type of welding electrode should only be used when welding on in-service piping or performing hot tap operations? - Cellulose electrodes. - High hydrogen electrodes. - E7016, E7018 and E7010. - E7015, E7018 and E7016. - Answer-E7015, E7018 and E7016. Corrective action for a non-conformance will depend upon? - the nature of the non-conformance and its impact on the properties of the weldment - size of discontinuity causing the non-conformance - potential consequence of the non-conformance - probability of the non-conformance causing weld to fail - Answer-the nature of the non-conformance and its impact on the properties of the weldment Tasks that a welding inspector should perform; - task prior to welding, during welding and upon completion of welding - QC and QA activities - review of welding procedures and welder qualifications - Approve repair procedures - Answer-task prior to welding, during welding and upon completion of welding Visual inspection of a piping weld requires a minimum light intensity of; - 1000 μW/cm2 - 100 foot candles - 1000 foot candles - 100 μW/cm2 - Answer-100 foot candles Which of the following electrode designations can be a filler metal for either GTAW or GMAW welding process?