L'HOTELLIER
COMPONENT MAINTENANCE MANUAL
12589-( )
PRINTED IN FRANCE
26-20-50
Page 1005
APR 01/11
B.
Prepare to do the Hydrostatic Test
NOTE : Do the hydrostatic test by the water-Jacket volumetric-expansion method specified in the
Compressed Gas Association (CGA) Pamphlet C-1. Do not do the hammer test. Test
persons must know the contents of CGA Pamphlet C-1 to make a correct analysis of the
results.
(1)
Disassemble the container. Remove the disc assemblies and pressure switch. Refer to
DISASSEMBLY section.
(2)
Only test persons are permitted in the test area during hydrostatic tests.
WARNING : CONCENTRATION OF COMPRESSED AIR OR UNWANTED MATERIAL
MOVED BY COMPRESSED AIR CAN CAUSE INJURY TO PERSONS.
ALWAYS POINT COMPRESSED AIR AWAY FROM PERSONS. USE
APPLICABLE EYE PROTECTION TO PREVENT INJURY TO YOUR EYES.
(3)
Clean the neck(s), fill, and switch fittings with dry air or nitrogen with a maximum pressure
of 30 psig (207 kPa)
(4)
Install seal washer "BS" 10216 and pressure test plug 70066 in the switch fitting.
(5)
Install o-ring 10217 and pressure test plug OUT70065 in the fill fitting.
(6)
Fill the container with water through an open neck
(7)
Install o-ring 10215 and pressure test cap neck OUT72237 on one of the necks.
(8)
Install o-ring 10215 and pressure test cap neck OUT72371 on the open neck.
C.
Hydrostatic Test Procedure
(1)
Install the container in the test setup shown in CGA Pamphlet C-1.
(2)
Attach the pressure line of the test setup to the pressure test cap neck OUT72371
(3)
Pressurize the container to 14300 kPa
(4)
Do the hydrostatic test as specified by 49 CFR 173.34(e). Use the Water Jacket
Volumetric Expansion Method in CGA Pamphlet C-1
NOTE : You MUST NOT do the hammer test for this type of container.
D.
Analysis of the Hydrostatic Test Results
(1)
The tests give the total and permanent expansion of the container at a specified pressure.
Total expansion minus the permanent expansion is the elastic expansion. Elastic
expansion at a specified pressure is a definite measure of the container average wall
thickness.
The document reference is online, please check the correspondence between the online documentation and the printed version.