Page 165 - Improving Machinery Reliability

Machinery Reliability Audits arid Reviews 137

3. Control valves
4. Gauges
d. Priced spare parts list(s) and recommendations
14. Electrical and instrumentation schematics and bill of materials
15. Electrical and instrumentation arrangement drawing(s) and lists of connections
16. Control and trip system data
a. Valve lift sequence on multivalves and final settings
b. Pin-setting diagram
*c. Control and trip system drawings
d. Control setting instructions
17. *Governor cross-section and setting instructions
18. Steam flow versus horsepower curves at normal and rated loads and speeds
19. Steam flow versus first-stage pressure curve for multistage machines or nozzle
bowl pressure for single-valve single-stage machines at normal and rated
speed with normal steam conditions
20. Steam flow versus speed and efficiency curves at normal steam conditions
21. *Steam flow versus thrust-bearing load curve
22. Extraction performance curves
23. *Steam condition correction factors:
a. Inlet pressure to maximum and minimum values listed on data sheet in
increments agreed at order
b. Inlet temperature to maximum and minimum values listed on data sheet in
increments agreed at order
c. Speed (80%-105%-5% increments)
d. Exhaust pressure to maximum and minimum values listed on data sheet in
increments agreed at order
24. Vibration analysis data, including:
a. Number of blades-each wheel
b. Number of blades-each diaphragm
e. Number of nozzles-nozzle block, single valve
-nozzle section, multivalve
d. Campbell diagram
e. Goodman diagram
25. *Lateral critical analysis report, including:
a. Method used
b. Graphical display of bearing and support stiffness and its effect on critical
speeds
c. Graphical display of rotor response to unbalance
d. Graphical display of overhung moment and its effect on critical speed
26. Allowable flange loading(s)
27. *A coupling alignment diagram, including recommended limits during operation
Note: All shaft end position changes and support growths from 70°F (21°C)
ambient reference
28. *Weld procedures
29. Hydrostatic test logs
30. Mechanical run test logs including:
a. Qil flows, pressures, and temperatures