Page 107 - Industrial Process Plant Construction Estimating and Man Hour Analysis

80 Industrial process plant construction estimating and man-hour analysis

5.3 General scope of field work required for each recovery
boiler sheet 1

5.3.1 Scope of work-field erection
Pressure parts

Install steam drum
Drums include straps and/or U-bolts: steam drum
Steam drum trim piping
Drum internals—remove and reinstall
Generating bank
Generating tube sections and headers—unload and handle
Set rigging for hoisting assemblies
Hoist into place
00
Weld tubes to header stubs—2-1/2 diameter, TIG weld
Fit and weld filler bar at tube welds
Integral economizers for recovery units—multiple header type
Economizer tube sections and headers—unload and handle
Set rigging for hoisting assemblies
Hoist into place
00
Weld tubes to header stubs—2-1/2 diameter, TIG weld
Fit and weld filler bar at tube welds
Baffles—place and weld including clips
Vibration bars
Backstays
Casing and hoppers
Doors

Headers, furnace, and waterwall panels
Boiler sidewall tubes
Wall panels—shop assembled with headers
Fit and weld filler joining membrane panels

Furnace front wall tubes
Headers—loose
Wall panels—shop assembled without headers
00
Weld tubes to header stubs—2-1/2 diameter, TIG weld
Fit and weld filler bar at tube welds
Fit and weld filler joining membrane panels

Furnace roof tubes
Headers—loose
Tubes—loose, furnace including screen
Weld tubes to header stubs—3 diameter, TIG weld
00
Furnace sidewall tubes
Headers—loose
Wall panels—shop assembled without headers
Weld tubes to header stubs—2-1/2 diameter, TIG weld
00
Fit and weld filler bar at tube welds
Fit and weld filler joining membrane panels