1、Designation: F 309 04Standard Practice forLiquid Sampling of Noncryogenic Aerospace Propellants1This standard is issued under the fixed designation F 309; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers procedures for obtaining a sampleof noncryogenic aerospace propellant. Two procedures arecovered as follows:Proc
3、edure 1Closed System (Section 6), andProcedure 2Open-End Procedure (Section 7).1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and dete
4、rmine the applica-bility of regulatory limitations prior to use. For hazard state-ments see Sections 4 and 5.2. Referenced Documents2.1 ASTM Standards:2F 311 Practice for Processing Aerospace Liquid Samples forParticulate Contamination Analysis Using Membrane Fil-ters3. Summary of Practice3.1 Sample
5、s are withdrawn from the system by (1) a closedvessel capture, and (2) an open-end vessel (see Fig. 1). Bothprocedures are practical for most liquid aerospace propellantsnot excessively corrosive or toxic.4. Apparatus4.1 Stainless Steel Pressure Sampling Cylinders, 1-L capac-ity, equipped with stain
6、less steel valves on each end.4.1.1 CautionPressure sampling cylinders must bemarked for the liquid being sampled. Cylinders for onematerial must not be interchanged with sampling cylinders ofother materials because of the possibility of incompatibility.4.2 Full Protective Suits.4.2.1 CautionDue to
7、the toxic and corrosive nature ofmost propellent fluids and their vapors, extreme care must beexercised in handling. Full protective suits must be worn whensampling these fluids.4.3 Polyethylene Wash Bottle, 1-L capacity, filled withdemineralized water, filtered in the manner described in Prac-tice
8、F 311.4.4 Stainless Steel Bucket.4.5 Miscellaneous Fittings, as needed for sample pointadaption.5. Hazards5.1 Care should be taken when handling propellants sincemost of them are toxic to some degree. Care should also betaken when sampling fluids from a system under dynamicconditions.PROCEDURE 1CLOS
9、ED SYSTEM6. Procedure6.1 Sampling cylinders must be clean, particulate-controlledin accordance with system requirements, and have a partialvacuum of 10 % of atmospheric pressure.6.2 After removing protective caps, connect both ends of thesampling cylinder to the system sampling ports, using fittings
10、as necessary.6.3 Open both sampling valves and both sampling cylindervalves, and allow fluid to flow through the sampling cylinderfor 10 min.1This practice is under the jurisdiction of ASTM Committee E21 on SpaceSimulation and Applications of Space Technology and is the direct responsibility ofSubco
11、mmittee E21.05 on Contamination.Current edition approved Sept. 1, 2004. Published September 2004. Originallyapproved in 1966. Last previous edition approved in 2000 as F 309 70 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm
12、.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.FIG. 1 Two Systems for Obtaining a Sampling of NoncryogenicAerospace Fluid1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Un
13、ited States.6.4 Close all four valves downstream side first, and removethe sampling cylinder from the system.6.5 Rinse the valve ends with demineralized water filteredthrough a 0.8 to 2.0-m absolute membrane.6.6 Replace the protective caps on the sampling cylinderand sampling valves.6.7 Submit the f
14、ull sampling cylinder for analysis.PROCEDURE 2OPEN-END PROCEDURE7. Procedure7.1 Sampling cylinders must be clean and particulate-controlled in accordance with system requirements, and have avacuum of 10 % of atmospheric pressure.7.2 After removing protective caps, connect the samplingcylinder to the
15、 sampling valve of the system and inlet valve ofthe sampling cylinder.7.3 Open the sampling valve of the system and inlet valve ofthe sampling cylinder.7.4 Slowly open the outlet valve of the sampling cylinderand catch the overflow in a bucket. Adjust the valve until thecylinder is full.7.5 Close al
16、l three valves.7.6 Remove the sampling cylinder from system.7.7 Rinse the valve ends with demineralized water filteredthrough a 0.8 to 2.0-m absolute membrane.7.8 Replace the protective caps on the cylinder and sam-pling valves.7.9 Submit the full sampling cylinder for analysis.8. Precision and Bias
17、8.1 Neither the precision nor the bias for this practice hasbeen determined.9. Keywords9.1 aerospace propellants; fluid sampling; samplingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this st
18、andard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years a
19、ndif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee,
20、 which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F309042
