Page 172 - Industrial Process Plant Construction Estimating and Man Hour Analysis

148 Industrial process plant construction estimating and man-hour analysis

8.8 Coal-fired boiler estimate data
8.8.1 Install drum, erect headers, panels, furnace wall, roof tubes,
weld tubes/panels sheet 1

Description MH Unit
Install steam drum
Drums—include straps and/or U-bolts: steam drum (200,001 lb Weight 9.00 Ton
300,000 lb)
Steam drum trim piping 160.00 Boiler
Drum internals—remove and reinstall 136.00 Boiler
Set rigging for hoisting assemblies 60.00 Boiler
Hoist into place 1.50 Ton
Erect headers and wall panels; fit and weld water wall panels
Boiler sidewall, furnace front wall, roof, sidewall, and rear wall tubes
Headers—loose 15.00 Ton
Wall panels—shop assembled without headers 10.00 Ton
Weld tubes—panel to panel—(2 < BW 2-1/2 TIG) (2001–2600) psi 4.20 EA
00
00
Fit and weld filler bar at tube welds 1.00 Space
Weld tubes to header stubs—(2 < BW 2-1/2 TIG) (2001–2600) psi 4.20 EA
00
00
Fit and weld filler joining membrane panels 0.70 LF
Tubes—loose, furnace including screen 1.40 EA
Weld tubes to header stubs—(2-1/2 < BW 3 TIG) (2001–2600) psi 4.60 EA
00
00
Furnace rear wall tubes (wall panel—membrane) 12.00 Ton
Install and weld membrane and scallop bars on nose tubes 2.30 Ton
8.8.2 Install and weld attemperators, superheater, and reheat
components sheet 2

Description MH Unit
Install and weld attemperators, superheater, and reheat components
Tubes—connecting 1.65 EA
Tubes—sections—final secondary superheater 7.00 Ton
Headers 15.00 Ton
Weld tubes to header stubs—(3-1/2 < BW 4 TIG) (2001–2600) psi 5.90 EA
00
00
Fit and weld filler bar at tube welds 1.00 Space
Spray type—complete with body and internals (excludes welding) 20.00 Ton
Drum type—complete with internals, piping, valves, and supports 32.00 Ton
(excludes welding)
4 OD, expand tubes in drums (1800 psi) 4.00 EA
00
Weld tubes to header stubs—(4 < BW 4-1/2 TIG) (2001–2500) psi 6.50 EA
00
Headers 65.00 Ton
Supports—rods 65.00 Ton
Tube sections—platen secondary superheater-pendant/inverted loop 20.00 Ton
Tube section supports 20.00 Ton
Saturated connections 35.00 Ton
Mounting seals 90.00 Ton
Seals 175.00 Ton