Page 124 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Pulp and paper Chapter 5 97

5.12.3 Erect superheater, reheater, riser tube, down comers,
attemperators, sheet 3

Installation man-hour
Historical Estimate
MH Unit Qty Unit BM
Erect, superheater, reheater, tubes, downcomers, 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
Weld superheater tubes; 1.77 OD 0.150 WT, 2.10 EA 0 EA 0
00
00
BW (TIG)
Attemperators for recovery units
Spray type—complete with body and internals 20.00 Ton 0 Ton 0
(excludes welding)
Drum type—complete with internals, piping, valves, 45.00 Ton 0 Ton 0
and supports (excludes welding)
Reheater
Tubes—connecting 32.00 Ton 0 Ton 0
Tubes—sections 10.00 Ton 0 Ton 0
Headers 15.00 Ton 0 Ton 0
Weld reheated tubes; 2 OD, BW (TIG) 2.30 EA 0 Ton 0
00
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 4.40 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