ASTM E144-14(2020)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E144 − 14 (Reapproved 2020)
Standard Practice for
Safe Use of Oxygen Combustion Vessels
This standard is issued under the fixed designation E144; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* newed after each 5000 firing or at a more frequent interval if
the seals or other parts show evidence of deterioration. The
1.1 This practice covers methods for judging the soundness
hydrostatic and proof tests described in Sections 3 and 4 shall
of new and used oxygen combustion vessels, and describes the
be repeated if any of the following have occurred:
precautions to be observed in oxygen combustion vessel
2.2.1 Five thousand firings.
methods.
2.2.2 Firing with an excessive charge of either sample or
1.2 This practice is applicable to all procedures in which
oxygen.
samples are completely oxidized by combustion in a metal
2.2.3 Ignition of any internal part of the vessel, including
vessel containing oxygen under pressure. Where there is
fuel capsule.
conflictwithspecificprecautionsinindividualASTMmethods,
2.2.4 The evidence of corrosion or surface defects which
the latter shall take precedence.
exceed 80 % of the manufacturer’s stated corrosion allowance
for the vessel.
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 2.2.5 Any change in thread tolerances of vessel enclosures
which exceed the manufacturer’s specifications.
conversions to SI units that are provided for information only
and are not considered standard.
3. Hydrostatic Test
1.4 This standard does not purport to address all of the
3.1 Fill the vessel with water at room temperature and
safety concerns, if any, associated with its use. It is the
connect to a suitable hydraulic pressure system. Be sure that all
responsibility of the user of this standard to establish appro-
air has been displaced from the vessel and from the connecting
priate safety, health, and environmental practices and deter-
gas passages. Support the vessel so that the diameter at the
mine the applicability of regulatory limitations prior to use.
midsection of the cylinder can be measured with a micrometer
1.5 This international standard was developed in accor-
caliper, and the deflection at the center point of the bottom can
dance with internationally recognized principles on standard-
be measured with a micrometer dial indicator. Apply water
ization established in the Decision on Principles for the
pressure which is 1.5 times the manufacturer’s recommended
Development of International Standards, Guides and Recom-
working pressure test pressure of the vessel and check the
mendations issued by the World Trade Organization Technical
vessel and pressure connections for leaks.
Barriers to Trade (TBT) Committee.
3.2 With the hydraulic system at atmospheric pressure,
2. Physical Requirements
measure the diameter at the midsection of the cylinder and
obtain a zero reading for the dial indicator in contact with the
2.1 Initial Test—The manufacturer of oxygen combustion
center point of the bottom of the vessel. Raise the hydrostatic
vessels for use inASTM test methods shall furnish a certificate
pressure to test pressure and repeat these measurements, then
with each new vessel showing that it has satisfactorily passed
release the pressure and take a third set of measurements with
the hydrostatic and proof tests described in Sections 3 and 4.
the system at atmospheric pressure. If the application of test
When requested, the manufacturer shall supply evidence that
pressure produces a deflection greater than 0.005 in.
the vessel is designed and constructed in accordance with
(0.127 mm) at the midsection of the cylinder or at the center
recognized practices for pressure vessel equipment.
point of the bottom of the vessel, or if any of the vessel parts
2.2 Periodic Inspection—All seals and other parts that are
do not resume their original dimensions when pressure is
recommended by the manufacturer shall be replaced or re-
released, reject the vessel as unsafe.
4. Proof Test
This practice is under the jurisdiction ofASTM Committee E41 on Laboratory
Apparatus and is the direct responsibility of Subcommittee E41.06 on Laboratory
4.1 Record the outside diameter at the midsection of the
Instruments and Equipment.
vessel cylinder as measured with a micrometer caliper, then
Current edition approved Feb. 1, 2020. Published March 2020. Originally
ε1
assemble the vessel for firing with a tablet or pellet of
approved in 1959. Last previous edition approved in 2014 as E144 – 14 . DOI:
10.1520/E0144-14R20. compressed benzoic acid that gives an energy release that is 1.5
*A Summary of Changes section appears at the end of this standard
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