1、Designation: D 4069 95 (Reapproved 2008)Standard Specification forImpregnated Activated Carbon Used to Remove GaseousRadio-Iodines from Gas Streams1This standard is issued under the fixed designation D 4069; the number immediately following the designation indicates the year oforiginal adoption or,
2、in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard covers the specifications for physicalproperties and performance re
3、quirements of virgin impreg-nated activated carbon to be used for the removal of gaseousradioiodine species from gas streams.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.2. Referenced Documents2.1 ASTM Standards:2D 2652 T
4、erminology Relating to Activated CarbonD 2854 Test Method for Apparent Density of ActivatedCarbonD 2862 Test Method for Particle Size Distribution ofGranular Activated CarbonD 2866 Test Method for Total Ash Content of ActivatedCarbonD 2867 Test Methods for Moisture in Activated CarbonD 3466 Test Met
5、hod for Ignition Temperature of GranularActivated CarbonD 3802 Test Method for Ball-Pan Hardness of ActivatedCarbonD 3803 Test Method for Nuclear-Grade Activated CarbonD 3838 Test Method for pH of Activated CarbonE 300 Practice for Sampling Industrial Chemicals2.2 ANSI/ASME Standard:NQA-1 Quality As
6、surance Program Requirements forNuclear Facilities33. Terminology3.1 DefinitionsDefinitions relating to this specification aregiven in Terminology D 2652.3.2 Definitions of Terms Specific to This Standard: Descrip-tions of Terms Specific to This Standard:3.2.1 lota quantity of impregnated activated
7、carbon of thesame grade or type, consisting of one or more batches, that hasbeen produced under the same manufacturers production orderusing the same manufacturing procedure and equipment.3.2.2 batcha quantity of impregnated activated carbon ofthe same grade or type that has been produced using the
8、samemanufacturing procedures and equipment, and that has beenhomogenized so as to exhibit the same physical properties andperformance characteristics throughout its mass.NOTE 1The maximum allowable batch size shall be 10 m.3.2.3 qualification testa one-time test performed on eachof three grab sample
9、s taken randomly from a single homog-enized batch of a vendors grade or type of impregnatedactivated carbon to determine its suitability for the purposestated herein. The size of each grab sample should be at least500 cm.3.2.4 batch testa test performed on a representativesample of each batch of the
10、 same grade or type of impregnatedactivated carbon to determine whether that batch meets thespecification prescribed herein.3.2.5 grade or typethe manufacturers designation for animpregnated activated carbon having a given set of perfor-mance capabilities and physical properties.1This specification
11、is under the jurisdiction of ASTM Committee D28 onActivated Carbon and is the direct responsibility of Subcommittee D28.04 on GasPhase Evaluation Tests.Current edition approved Aug. 1, 2008. Published September 2008. Originallyapproved in 1981. Last previous edition approved in 2003 as D 4069 95 (20
12、03).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (AN
13、SI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Materials and Manufacture4.1 The activated carbon furnished under this specificationshall be virgin material. Re
14、activated carbon shall not be used.4.2 Impregnated activated carbon furnished under thisspecification shall be subject to the document control provi-sions of Section 7 of ANSI NQA-1.4.3 Materials used in the manufacture of impregnated-activated carbon furnished under this specification shall betrace
15、able as provided in Section 9 of ANSI NQA-1.5. Significance and Use5.1 Activated carbons used in containment systems fornuclear reactors must be capable of functioning under bothnormal operating conditions and those conditions which mayexist following a design basis accident (DBA). Adsorbent bedstha
16、t are part of recirculatory systems inside containment maybe exposed to the peak pressure, temperature, and steamcontent of a post-DBA condition.5.2 Carbon beds outside containment will be protected byfast-acting shutoff valves from the sudden rise in pressure,temperature, and humidity of the contai
17、nment atmospherewhich would exist following a DBA. However, some rise intemperature and humidity will be experienced even by bedsoutside containment if they are reconnected to containmentafter the initial pressure rise (due to escape of steam into thecontainment volume) has been reduced by containme
18、nt cool-ers. The amount of radioactivity that can reach either type ofadsorption system is conceivably quite high; hence, there is apossibility of a bed temperature rise due to decay heating. Thegaseous radioactive contaminants of most interest are organiciodides. In this test, CH3I is used to typif
19、y the performance ofthe carbon on organic iodine compounds in general. The testdescribed here provide a reasonable picture of the effectivenessof an activated carbon for organic iodides under normal andpost-DBA conditions. The equipment and methods describedcan be used, with discretion, for similar
20、tests at different gasflow conditions and, to some extent, on different gaseousradioactive contaminants and other adsorbents.6. Homogeneity Requirement6.1 A batch shall be considered homogeneous if the appar-ent density of each of three grab samples differs by no morethan 63.0 % from the average val
21、ue of all three determina-tions. Failure of this test requires rehomogenization.7. Performance Requirements7.1 Each batch of impregnated activated carbon shall con-form to the following performance requirement: use the Methyliodide efficiency test (See Test Method D 3803), at 30C, 95 %relative humid
22、ity, and a minimum percent specification of97.0 %.8. Physical Properties Requirements8.1 Each batch of impregnated activated carbon shall con-form to the requirements for physical properties prescribed inTable 1.9. Sampling9.1 A representative sample shall be obtained from eachbatch using the method
23、s prescribed in Practice E 300 inquantity sufficient to perform all of the tests prescribed hereinin triplicate. A 2-L sample is usually sufficient.10. Number of Tests and Retests10.1 Each batch test specified in Section 8 and Table 1 shallbe performed at least once on each batch of carbon unless th
24、etest method prescribes a greater number of tests.10.2 If a single test from 10.1 fails to meet the specificationvalue, the test may be repeated two additional times. Theaverage of the three determinations shall meet the specifica-tion. In addition, the coefficient of variation, n, for the threedete
25、rminations shall not exceed 65.0 %:where:n = 100 s/ X %,s =(13X2X!22% efficiency units,X = percent efficiency units, individual sample, andX = percent efficiency units, average of three samples.11. Test Methods11.1 The test program shall conform to the test controlrequirements of Section 12 of ANSI
26、NQA-1.11.2 The test methods used to determine the physicalproperties and performance capability of the sample shall bethose prescribed in Section 8 and Table 1.12. Quality Assurance and Inspection12.1 The producer or supplier of impregnated activatedcarbon furnished under this specification shall co
27、mply with theapplicable Quality Assurance Requirements of ANSI NQA-1as identified by the users specification.12.2 Inspection of the impregnated activated carbon shall beagreed upon between the user and the supplier as part of thepurchase contract.13. Rejection and Rehearing13.1 Impregnated activated
28、 carbon that fails to conform tothe requirements of this specification shall be rejected. Rejec-tion shall be reported to the producer or supplier promptly andTABLE 1 Physical PropertiesTest Test Method SpecificationApparent density D 2854 0.38 g/mL, minParticle size distribution,ASTM E-11 Sieves:D
29、2862Retained on No. 6 0.1 %, maxRetained on No. 8 5.0 %, maxThrough No. 8, Retainedon No. 1260.0 %, maxThrough No. 12, Retainedon No. 1640.0 %, minThrough No. 16 5.0 %, maxThrough No. 18 1.0 %, maxAsh contentAD 2866 State valueMoisture content D 2867 State valueIgnition temperature D 3466 330C, minB
30、all-pan hardness D 3802 92.0 %, minpH D 3838 State valueAThis test to be performed on the base carbon prior to impregnation.D 4069 95 (2008)2in writing. In case of dissatisfaction with the results of the test,the producer or supplier may make claim for a rehearing.14. Certification14.1 The producer
31、or supplier shall certify to the user asfollows:14.1.1 The impregnated-activated carbon comprising the lotwas produced using the same manufacturing procedure andequipment as that used to produce the impregnated activatedcarbon submitted for the original qualification tests. Theproducer or supplier s
32、hall furnish a copy of the qualificationtest results to the user.14.1.2 The impregnated activated carbon furnished to theuser was manufactured, sampled, tested, and inspected inaccordance with this specification and has been found to meetthe requirements of Sections 1 through 16 hereof. The producer
33、or supplier shall furnish a copy of the batch test results to theuser.15. Packaging15.1 The impregnated activated carbon shall be packaged ina durable container in such a way as to minimize degradationof the particles during handling, shipping, and storage. Thecontainer shall be provided with a vapo
34、r barrier in order tominimize the adsorption of water and organic vapors afterpackaging.16. Package Marking16.1 Each package shall be clearly and indelibly marked toshow the producers or suppliers name, trade name, andimpregnated activated carbon type or grade number; lot, batch,and drum number; gro
35、ss and net weights of the package; andthe number of this specification.17. Verification17.1 The user shall sample each batch of impregnatedactivated carbon comprising the lot furnished hereunder usingthe procedures prescribed herein, and perform or have per-formed those tests necessary to verify the
36、 certification of theproducer or supplier. As a minimum, the verification testprogram shall include the determination of the methyl iodidedecontamination efficiency at 30C and 95 % relative humidity(Section 7), and ignition temperature (Test 5, Table 1). Theverifying laboratory shall test the impreg
37、nated carbon inaccordance with this specification and shall report the actualtest results to the user in writing.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advi
38、sed 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 andif not revised, either
39、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, which you may attend. If
40、 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).D 4069 95 (2008)3
