use and all safety precautions have been taken.
desirable for a warm and empty tank. Prior to filling or
Place the trailer on a level surface or ensure that the
pressurizing the tank, perform the inspection proce-
tank has a level position. Close all control valves
dures indicated in table 8-1.
on the storage tank. Pressurize the LOX supply
FILLING.--Normally the servicing trailer is
tank to the required pressure for transfer to the
filled from central supply tanks. These tanks have
TMU-70/M. Remove the dust cover from the supply
transfer hoses terminating in couplings that match the
tank transfer line and purge hose. After purging,
fill-drain line coupling on the trailer. Operation of the
connect the fill-drain line coupling (1) (fig. 8-3) to
supply tank should be in accordance with the
the transfer hose. Open the TMU-70/M's storage tank
procedures in its operation manual.
vent line shutoff valve (5) and fill drain line shutoff
Filling consists of the following procedures.
valve (3).
Ensure that all required safety equipment is in
Table 8-1.--Periodic Inspection
ITEM
INSPECTION
Inspect for obvious physical damage, missing Daily while in use
Exterior
parts, illegible decals or plates, and missing or
insecure attaching parts.
Inspect for dents, nicks, or scratches; security of Daily while in use
Piping and valves
brazed or threaded connections; ease of valve
movement, and adequate seating and security of
packings.
Gauges
Inspect for cracked dial face and security of Daily while in use
installation.
Inspect for smooth hinge and guide operation and Daily while in use
Cabinet
correct functioning of latches and legibility of
decals and plates.
Inspect for correct inflation, tread wear, sidewall Daily while in use
Tires
cracks or abrasions, and proper positioning of
valve stems.
Wheel assemblies
Inspect for warps or dents in rims and freedom of Daily while in use
rotation.
Retractable caster
Inspect for proper operation and undue wear or Daily while in use
damage.
Controls
Inspect for loose, missing, or cracked handles; Daily while in use
obvious physical damage.
Brake and cross Inspect for physical damage, missing parts, and Daily while in use
shaft assemblies
ease of operation.
Converter fill and Inspect for frayed wire in braid and worn or Daily while in use
vent line hoses
damaged fill and vent couplings.
Exterior cleanliness
Inspect visually for such contaminants as oil, Weekly
grease, metal chips or scale.
Operation
Perform operational checkout
Monthly or on receipt
of new or repaired
equipment
8-6
