2-39. THREADED PIPE MAINTENANCE.
This task consists of
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Tape, Anti-seize (Appendix C, Section II, Item 30)
ROWPU shutdown (TM 10-4610-240-10).
Power shutdown (power source manual)
ROWPU piping drained (TM 10-4610-240-10).
General Safety Instructions
ROWPU piping and equipment can contain extremely high pressure
during and after operation. If this pressure is not relieved before
performing maintenance, serious injury or death may result. Be sure
to open all drains and vents before performing maintenance
The following procedures are typical for threaded piping, elbows,
couplings, and pipe sections used in the ROWPU Some of the removal
and installation instructions may not be applicable to your maintenance
task Perform only those tasks that affect replacement of the defective
Some threaded pipe sections are held in place with retaining straps
Remove retaining straps as required
Remove retaining straps as follows:
Remove two screws (8), flat washers (10), lockwashers (9), retaining strap (13)
Remove insulation tape (11) and pipe support (12) from threaded pipe (5)
Remove nipple strap as follows
(1) Remove two nuts (21), lockwashers (22), flat washers (16) and screws (15)