Page 177 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Coal-fired power plant Chapter 8 153

8.9.3 Install and weld attemperators, superheater, and reheat
components sheet 3

Installation man-hour
Historical Estimate
MH Unit Qty Unit BM
Install and weld attemperators, superheater, 0
and reheat components
Final secondary superheater
Tubes—connecting 1.65 EA 0 EA 0
Tubes—sections 7.00 Ton 0 Ton 0
Headers 15.00 Ton 0 Ton 0
Weld tubes to header stubs—(3-1/2 < BW 4 00 5.90 EA 0 EA 0
00
TIG) (2001–2600) psi
Fit and weld filler bar at tube welds 1.00 Space 0 Space 0
First and second stage attemperators
Spray type—complete with body and internals 20.00 Ton 0 Ton 0
(excludes welding)
Drum type—complete with internals, p&v, 32.00 Ton 0 Ton 0
support (excludes welding)
Tubes (4-1/2 welded to stub and 4 expand in
00
00
drum, weld to hdr)
4 OD, expand tubes in drums (1800 psi) 4.00 EA 0 EA 0
00
Weld tubes to header stubs—(4 < BW 4-1/2 6.50 EA 0 EA 0
00
TIG) (2001–2500) psi
Platen secondary superheater-pendant/inverted
loop
Headers 65.00 Ton 0 Ton 0
Supports—rods 65.00 Ton 0 Ton 0
Tube sections 20.00 Ton 0 Ton 0
Tube section supports 20.00 Ton 0 Ton 0
Saturated connections 35.00 Ton 0 Ton 0
Mounting seals 90.00 Ton 0 Ton 0
Seals 175.00 Ton 0 Ton 0
Weld tubes to header stubs—3-1/2 < BW 4 00 5.90 EA 0 EA 0
00
TIG) (2001–2600) PSI