Page 113 - Industrial Process Plant Construction Estimating and Man Hour Analysis

86 Industrial process plant construction estimating and man-hour analysis

5.6.3 Erect super heater, supply/riser down comers,
attemperators sheet 3

Installation
man-hour

Historical Estimate
MH Unit Qty Unit BM
Superheater, supply/riser/downcomers and 0
attemperators
Superheaters
Tubes—connecting 32.00 Ton 0 Ton 0
Tubes—sections 10.00 Ton 0 Ton 0
Headers 15.00 Ton 0 Ton 0
00
00
Weld superheater tubes; 1.77 OD 0.150 WT, 2.10 EA 0 EA 0
BW (TIG)
Attemperators for recovery units
Spray type—complete with body and internals (no 20.00 Ton 0 Ton 0
welding)
Drum type—internals, piping, valves, and supports 45.00 Ton 0 Ton 0
(no welding)
Supply and riser tubes
Headers 15.00 Ton 0 Ton 0
Tubes—make up or supply 25.00 Ton 0 Ton 0
Tubes—riser 29.00 Ton 0 Ton 0
Weld tubes to header stubs—4-1/2 diameter, TIG 4.00 EA 0 EA 0
00
no PWHT
Downcomers
Install downcomer 10.00 Ton 0 Ton 0
Downcomers; 10 OD 0.500 WT BW 0.55 DI 0 DI 0
00
Downcomers; 12 OD 0.562 WT BW 1.05 DI 0 DI 0
00
Downcomers; 14 OD 0.594 WT BW 1.05 DI 0 DI 0
00