ASTM F310-70(1996)

Standard Practice for Sampling Cryogenic Aerospace Fluids

SCOPE
1.1 This practice describes procedures for taking a sample of cryogenic aerospace fluid for analysis.  
1.2  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For hazard statement, see Section 5.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: E21 - Space Simulation and Applications of Space Technology
• Drafting Committee: E21.05 - Contamination

Relations

• Replaced By: ASTM F310-70(2000) - Standard Practice for Sampling Cryogenic Aerospace Fluids
• Effective Date: 01-Jan-2000
• Referred By: ASTM F307-13(2020) - Standard Practice for Sampling Pressurized Gas for Gas Analysis
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 310 – 70 (Reapproved 1996) An American National Standard
Standard Practice for
Sampling Cryogenic Aerospace Fluids
This standard is issued under the fixed designation F 310; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.5 Liquid Cryogenic Sampler, TTU-131/E, as described in
MIL-S-27626A (U-SAF) and MIL-P-25508D.
1.1 This practice describes procedures for taking a sample
4.6 Miscellaneous Fittings, for sample point adaption
of cryogenic aerospace fluid for analysis.
(cleaned to be hydrocarbon and particulate-controlled in accor-
1.2 This standard does not purport to address all of the
dance with system requirements).
safety concerns, if any, associated with its use. It is the
4.7 Polyethylene Wash Bottle, 1-L capacity, filled with
responsibility of the user of this standard to establish appro-
trichlorotrifluoroethane per MIL-C-81302, filtered in the man-
priate safety and health practices and determine the applica-
ner described in ASTM Practice F 311.
bility of regulatory limitations prior to use. For hazard state-
4.8 Flexible Hose, pressure-rated at 500 psig (3447 kPa
ment, see Section 5.
gage) suitable for minimum temperature to be encountered and
2. Referenced Documents
made of materials compatible with the fluid being sampled.
4.9 Polychlorotrifluoroethylene Bag.
2.1 ASTM Standards:
F 311 Practice for Processing Aerospace Liquid Samples for
5. Hazards
Particulate Contamination Analysis Using Membrane Fil-
5.1 When sampling cryogenic fluids, care should always be
ters
exercised to avoid contact with fluid or cold gas to prevent
2.2 Military Standards:
painful frostbite. During the chill-down process, caution should
MIL-C-81302
also be exercised as gas exiting from the sampling point is
MIL-P-25508D
under high pressure.
MIL-S-27626A (U-SAF)
6. Procedure Using Dewar Flask
3. Summary of Practice
6.1 Clean the outlet of the sampling port with fluid from a
3.1 A clean container is used to collect a sample of
polyethylene wash bottle.
cryogenic aerospace fluid either from a sampling valve, or
6.2 Open the sampling valve and allow the chill-down to
poured from a larger Dewar flask used for storage. The
occur until liquid is flowing into the catch bucket.
sampling container is chilled down by the exiting cold gas and
6.3 Remove the cover from the Dewar flask.
liquid until it will contain only liquid to be used for analysis.
6.4 Hold the flask in a stream of liquid and fill to approxi-
4. Apparatus
mately one-half full. Dump the liquid in the catch bucket.
6.5 Repeat the procedure described in 6.4 until the flask has
4.1 Dewar Flask, 1-L capacity.
been sufficiently chilled down.
4.2 Dewar Cover, with provisions for venting.
6.6 Fill the Dewar flask approximately three-fourths full and
NOTE 1—It is mandatory that this Dewar flask be maintained in a clean
replace the cover.
condition (pa
...