Page 108 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Pulp and paper Chapter 5 81

5.4 General scope of field work required for each recovery boiler
sheet 2 scope of work-field erection

Pressure Parts

Furnace rear wall tubes
Furnace rear wall tubes (wall panel—membrane)
Furnace rear wall tubes (loose)
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
Superheaters for recovery boilers
Tubes—connecting
Tubes—sections
Headers
00
00
Weld superheater tubes; 1.77 OD 0.150 WT, BW (TIG)
Attemperators for recovery units
Spray type—complete with body and internals (excludes welding)
Drum type—complete with internals, piping, valves, and supports (excludes
welding)
Supply and riser tubes
Headers
Tubes—makeup or supply
Tubes—riser
Weld tubes to header stubs—4-1/2 diameter, TIG weld
00
Downcomers
Install downcomer
Diameter weld, girth
Diameter weld, ring
Diameter weld, ring
Smelt spout and hood
Auxiliary equipment
Floor and hopper support steel
Suspension steel
Buckstays
Casing
Burner wind box—primary, secondary, and tertiary
Primary burners
Lighters
Hoppers
Doors and frames
Seals
Expanded metal lathe
Closure plates
Instrument connection