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q show bolt materialbolt material must be selected with adequate yield strength at the operating temperature to provide the required strength to
q bolt stress to seat the gasketthe required bolt stress to seat the gasket can be calculated using the recommended gasket seating stress provided by
q leak repair torquing procedureattempt to tighten only the bolts contained within an arc that includes the leak area plus one or two bolts either
q show leak area preparationclearly mark the location of the leak on the flange with a permanent markernotes1 depressurizing hydrocarbon lines in
q ultrasound bolt load monitoringultrasound measurement of bolt stresses using lsquobolt scope should be used onbullall bolts tightened by
q explain double boltingwhere low strength bolts must be used initial bolting with higher strength low temperature bolts may be necessary to minimize
q show gasket compressiongasket compression can also be used as a guide for limiting bolt torquespiral wound gaskets should be compressed to an
q flange assembly with bolt elongation measurementbolt elongation measurement may be used with colt engineering approval at flanges where hydraulic
q flange assembly with bolt tensioningmeasure the free length of the bolts ultrasonically this must be done prior to applying any load to the
q determine the proper torque values from the flangedetermine the proper torque values from the flange closure sheet apply the torque using a hand
q flange assembly with torque measurementselect the proper bolts and gasket for the intended service use only new undamaged gasketslubricate the bolt
before installing a bolt stud or nut threads shall be examined to ensure that there are no incompletely cut threads in the engagement zone both
q minimal external force required to achieve alignmentminimal external force shall be applied to achieve alignment flanged joints not conforming to
q alignment of piping flangesalignment of piping flanges shall be in accordance with asme b165 this code specifies thatbullflange centerline
q determine the extent of imperfection of the gasket surfaceto determine the extent of imperfection of the gasket surface subject to acceptance
q inspection of flange assemblyflanges shall be clean and free of old gasket fragments scratches burrs pits etc if needed the flange surfaces shall
the assembly techniques of bolted connections and bolts and gaskets material selection are closely interrelated consequently they must be treated as
q safety and loss preventionare there special venting requirements for flammables and toxic materialsair conditioning heating and ventilationbullare
indicate size capacity and noise reducing characteristics of all silencers on plans including silencers for vane-axial fansindicate all acoustical
clearly indicate fire dampers on ducts penetrating fire rated partitions equipment rooms duct shafts ceiling outlets etcdetail fire dampers on
for fan installation detail and indicate correct structural components drip pan acoustical and thermal insulationprovide special acoustical curbs for
q supply fan - air-conditioning guidelinesrecheck final air quantities and static pressure indicate location of motor and belt guard for fans located
q heat exchangers - air-conditioning guidelineslocation size and capacity clearly indicated control valves indicated space for tube removal keep
ensure all low points on steam mains and equipment have drip trap assembly high pressure condensate to be taken to flash tanks provide detail of
q space for coil removallocations of all coils clearly indicated on the drawings provide adequate space for coil removal and access doors on both