Page 176 - Industrial Process Plant Construction Estimating and Man Hour Analysis

152 Industrial process plant construction estimating and man-hour analysis

8.9.2 Drum, headers, panels, furnace wall, roof tubes, weld tubes/
panels sheet 2

Installation man-hour
Historical Estimate
MH Unit Qty Unit BM
Furnace roof/floor tubes
Headers—loose 15.00 Ton 0 Ton 0
Tubes—loose, furnace including screen 1.40 EA 0 EA 0
Weld tubes to header stubs—(2-1/2 < BW 3 00 4.60 EA 0 EA 0
00
TIG) (2001–2600) psi
Furnace sidewall tubes
Headers—loose 15.00 Ton 0 Ton 0
Wall Panels—shop assembled without headers 10.00 Ton 0 Ton 0
Weld tubes—panel to panel—(2 < BW 2-1/2 00 4.20 EA 0 EA 0
00
TIG) (2001–2600) psi
Fit and weld filler bar at tube welds 1.00 Space 0 Space 0
00
Weld tubes to header stubs—(2 < BW 2-1/2 00 4.20 EA 0 EA 0
TIG) (2001–2600) psi
Fit and weld filler joining membrane panels 0.70 LF 0 LF 0
Furnace rear wall tubes
Furnace rear wall tubes (wall panel—membrane) 12.00 Ton 0 Ton 0
Furnace rear wall tubes (loose) 1.40 EA 0 EA 0
Weld tubes—panel to panel—(2 < BW 2-1/2 00 4.20 EA 0 EA 0
00
TIG) (2001–2600) psi
Fit and weld filler bar at tube welds 1.00 Space 0 Space 0
Weld tubes to header stubs—(2 < BW 2-1/2 00 4.20 EA 0 EA 0
00
TIG) (2001–2600) psi
Fit and weld filler joining membrane panels 0.70 LF 0 LF 0
Install and weld membrane and scallop bars on 2.30 Ton 0 Ton 0
nose tubes