Page 167 - Industrial Process Plant Construction Estimating and Man Hour Analysis
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Coal-fired power plant Chapter  8 143


             8.3 General Scope of Field Work Required for Each Coal-Fired
             Boiler Sheet 2


                Furnace Roof/Floor Tubes
                Headers—loose
                Tubes—loose, furnace including screen
                                             00
                                                       00
                Weld tubes to header stubs—(2-1/2 < BW   3 TIG) (2001—2600) psi
                Furnace Sidewall Tubes
                Headers—loose
                Wall Panels—shop assembled without headers
                                                        00
                                           00
                Weld Tubes—panel to panel—(2 < BW   2-1/2 TIG) (2001–2600) psi
                Fit and weld filler bar at tube welds
                Weld tubes to header stubs—(2 < BW   2-1/2 TIG) (2001–2600) psi
                                                       00
                                         00
                Fit and weld filler joining membrane panels
                Furnace Rear Wall Tubes
                Furnace rear wall tubes (wall panel—membrane)
                Furnace rear wall tubes (loose)
                Weld tubes—panel to panel—(2 < BW   2-1/2 TIG) (2001–2600) psi
                                                       00
                                          00
                Fit and weld filler bar at tube welds
                                                       00
                                         00
                Weld tubes to header stubs—(2 < BW   2-1/2 TIG) (2001–2600) psi
                Fit and weld filler joining membrane panels
                Install and weld membrane and scallop bars on nose tubes
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