NOTE Facilities may choose to require subsequent follow-up observations to check for leaks. Table 3—Before Welding Initials Each of the following considerations should be satisfied before welding: Date Time Checked by 1 Are the welders qualified for the approved welding procedure (specification) to be used? 2 Is a preheat of the weld area required? 3 Is the fitting properly positioned to prevent misalignment of the hot tapping machine ? Have the pressure and temperature of the contained materials been reduced as much 4 as the process operation will 5 Have the flow, pressure, and level considerations of 6.3, 6.9, and 9.1 been considered? Table 4—Before Cutting Initials Each of the following considerations should be satisfied Date Time Checked before cutting: by 1 Has the weld been inspected and tested? 2 Has the hot tap fitting been pressure tested? 3 Have the hot tap valve, packing, gasket, and bolts been checked for leakage? 4 Have the packing or seals on the hot tapping machine been checked? Has the bleed off valve been checked to assure it will hold, is operable, and is not 5 obstructed? 6 Are all bolts on the pilot and cutter bit tight? (e.g. torqued to specification) 7 Is the coupon catcher on the bit? 8 Is the valve centered on the flange? 9 Has cutting depth been calculated to avoid cutting the opposite side of the pipe? 10 Has the boring bar been run through the to assure free passage? 11 Have the hot tapping machine and valve been purged, if recommended?
NOTE Facilities may choose to require subsequent follow-up observations to check for leaks. Table 3—Before Welding Each of the following considerations should be satisfied before welding: Date Time Initials Checked by 1 Are the welders qualified for the approved welding procedure (specification) to be used? 2 Is a preheat of the weld area required? 3 Is the fitting properly positioned to prevent misalignment of the hot tapping machine ? 4 Have the pressure and temperature of the contained materials been reduced as much as the process operation will 5 Have the flow, pressure, and level considerations of 6.3, 6.9, and 9.1 been considered? Table 4—Before Cutting Each of the following considerations should be satisfied before cutting: Date Time Initials Checked by 1 Has the weld been inspected and tested? 2 Has the hot tap fitting been pressure tested? 3 Have the hot tap valve, packing, gasket, and bolts been checked for leakage? 4 Have the packing or seals on the hot tapping machine been checked? 5 Has the bleed off valve been checked to assure it will hold, is operable, and is not obstructed? 6 Are all bolts on the pilot and cutter bit tight? (e.g. torqued to specification) 7 Is the coupon catcher on the bit? 8 Is the valve centered on the flange? 9 Has cutting depth been calculated to avoid cutting the opposite side of the pipe? 10 Has the boring bar been run through the to assure free passage? 11 Have the hot tapping machine and valve been purged, if recommended?
RP22016theditionfirstdraftforballot.docx