Page 239 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

Reciprocating Gas Engines and Compressors 221

7. Balance Power Cylinders. Prior to completing this step, confirm
that engine timing is satisfactory; fuel gas pressure is normal;
scavenging air pressure is normal; and lifters are operating nor-
mally. Use Pi meter and/or BMEP* indicator to balance load on
each power cylinder by adjusting fuel gas valve. Be certain that at
least one power cylinder fuel gas valve is fully open when work is
completed.
8. Check Safety Shutdowns. Refer to safety shutdown test manuals
for procedures to be followed in testing each shutdown. Be certain
all appropriate test information is included on the test sheets.

* BMEP = Break Mean Effective Pressure

CYLINDER NO. ASSET NO.
COMP. NO.
DAl E PROCESS
CRANK END

-
- CYLINDER DIAMETER
A - HORIZONTAL in.imn B - HORIZONTAL in./m
A - VERTICAL in.lm B - VERTICAL in.lm

in.lm side in:lm In.lm
Groove I1 in.lm
clearance - wide - thick
Groove I2 in.lmn in.lm side in./mn in.lmn
clearance - wide - thick
- - -
in.lm
in.lm
in.lm side
Groove 13 clearance wide thick
Groove 24 in.lm in.lm side in./m in./m
clearance - wide - thick