Page 186 - Industrial Process Plant Construction Estimating and Man Hour Analysis

162 Industrial process plant construction estimating and man-hour analysis

8.23 General scope of field work required for each FD, ID,
primary air fan & pulverized seal air fan

Fans
Perform all millwright work for the four fans. Alignment and grouting
Install sole and base plates
Attach fan to foundation—bolted connection

FD Fan
Set fan housing split
Set impeller assembly/shaft
Alignment fan bearings
Seal weld housing inside/outside
Weld inlet cones and stud rings
Weld shaft seal stud rings
Coupling alignment
Install damper
ID Fan
Set fan housing split
Set impeller assembly/shaft
Alignment fan bearings
Seal weld housing inside/outside
Weld inlet cones and stud rings
Weld shaft seal stud rings
Coupling alignment
Install damper

Primary Air Fan
Set fan housing split
Set impeller assembly/shaft
Alignment fan bearings
Seal weld housing inside/outside
Weld inlet cones and stud rings
Weld shaft seal stud rings
Coupling alignment
Install damper
Pulverizer Seal Air Fan
Set fan housing split
Set impeller assembly/shaft
Alignment fan bearings
Seal weld housing inside/outside
Weld inlet cones and stud rings
Weld shaft seal stud rings
Coupling alignment
Install damper