Page 162 - Improving Machinery Reliability

134 Improving Machinery Reliabiliv

These instructions are indispensable for field maintenance. They should prefer-
ably go into a “mechanical procedures,” or “turnaround” manual. Close screening
of these instructions may reveal special tooling or shop-facilities requirements.
Section 4-Performance curves:
a. Polytropic head and polytropic efficiency versus ICFM
b. Discharge pressure and brake horsepower versus ICFM
c. Balance-drum pressure versus thrust loading
d. Speed versus starting torque
Performance curves allow us to review probable versus actual surge limits,
probable uprate capabilities of major machinery, and maximum permissible bal-
ance-line fouling before onset of thrust-bearing distress. The speed versus start-
ing torque characteristic curves are important for driver sizing.
Section 5-Vibration data:
a. Vibration analysis data
b. Lateral critical speed analysis
c. Torsional critical speed analysis
d. Transient torsional analysis.
Vibration data previously submitted by the vendor are updated, supplemented,
or simply included in their original form for the purpose of having official data
in a single manual.
Section 6- “As-built” data:
a. “As-built” data sheets
b. “As-built” dimensions and data
c. Hydrostatic test logs
d. Mechanical run test logs
e. Rotor-balance logs
f. Rotor mechanical and electrical run-out
As in Section 5, these provide a comprehensive, final, updated issue.
Section 7-Drawing and data requirements:
a. Certified dimensional outline drawing and list of connections
b. Cross-sectional drawing and bill of materials
c. Rotor drawing and bill of materials
d. Thrust-bearing assembly drawing and bill of materials
e. Journal-bearing assembly drawing and bill of materials
f. Seal assembly drawing and bill of materials
g. Seal oil or seal gas schematic and bill of materials
h. Seal oil or seal gas arrangement drawing and list of connections
i. Seal oil or seal gas component drawings and data
j. Lube oil schematic and bill of materials
k. Lube oil arrangement drawing and list of connections
I. Lube oil component drawings and data
m. Electrical and instrumentation schematics and bill of materials
n. Electrical and instrumentation arrangement drawing and list of connections