(2)
Type II (Oxygen) Section of Control Panel.
General Inspection instructions are as
follows
Inspect a part or parts of an oxygen
system in a clean contaminant free
environment.
(a)
Check for damaged gauges
(b)
Damaged cam lever or head valves
(c)
Damaged
or
cracked
hardware,
fittings, steel tubing and flex hoses
SAFETY VALVE TESTING system must be
oxygen clean
(3)
Test Safety Valves Connect oxygen safety
valve to be tested to an oxygen cleaned
gauge and regulated 3800 psig (26,182
kPa) clean nitrogen source (See Figure 6-4
)
Keep unprotected parts of body away
from valve opening during test
NOTE
Hydrostatic tester may be used in lieu of
nitrogen or air pressure source.
(a)
Starting
with
zero
pressure
increase
pressure to valve operating pressure
(b)
If safety valve relieves pressure prior to, or
after specified pressure and cannot be
reset, safety valve is defective
c.
Repair or Replacement Refer to paragraph 6-
3.c. for general repair or replacement procedures.
(1)
Replace damaged or defective nipples,
couplings and gauges.
(2)
Replace all threaded parts having worn,
stripped or damaged threads.
Figure 6-4. Typical Safety Valve Test Setup (Oxygen)
6-11
