1、Designation:D406995(Reapproved 2014)Standard Specification forImpregnated Activated Carbon Used to Remove GaseousRadio-Iodines from Gas Streams1This standard is issued under the fixed designation D4069;the number immediately following the designation indicates the year oforiginal adoption or,in the
2、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 requirements of
3、 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:2D2652 Terminology Relat
4、ing to Activated CarbonD2854 Test Method for Apparent Density of ActivatedCarbonD2862 Test Method for Particle Size Distribution of Granu-lar Activated CarbonD2866 Test Method for Total Ash Content of ActivatedCarbonD2867 Test Methods for Moisture in Activated CarbonD3466 Test Method for Ignition Te
5、mperature of GranularActivated CarbonD3802 Test Method for Ball-Pan Hardness of ActivatedCarbonD3803 Test Method for Nuclear-Grade Activated CarbonD3838 Test Method for pH of Activated CarbonE300 Practice for Sampling Industrial Chemicals2.2 ANSI/ASME Standard:NQA-1Quality Assurance Program Requirem
6、ents forNuclear Facilities33.Terminology3.1 Definitions Definitions relating to this specificationare given in Terminology D2652.3.2 Definitions of Terms Specific to This Standard:3.2.1 lota quantity of impregnated activated carbon of thesame grade or type,consisting of one or more batches,that hasb
7、een 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 samemanufacturing procedures and equipment,and that has beenhomogenized so as
8、 to exhibit the same physical properties andperformance characteristics throughout its mass.NOTE1The maximum allowable batch size shall be 10 m.3.2.3 qualification testa one-time test performed on eachof three grab samples taken randomly from a single homog-enized batch of a vendors grade or type of
9、 impregnatedactivated carbon to determine its suitability for the purposestated herein.The size of each grab sample should be at least500 cm.3.2.4batch testa test performed on a representativesample of each batch of the same grade or type of impregnatedactivated carbon to determine whether that batc
10、h 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.4.Materials and Manufacture4.1 The activated carbon furnished under this specificationshall be virgin
11、 material.Reactivated 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 s
12、hall betraceable 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 both1This specification is under the jurisdiction of ASTM Committee D28 onActivated Carbon and is the direct respon
13、sibility of Subcommittee D28.04 on GasPhase Evaluation Tests.Current edition approved July 1,2014.Published September 2014.Originallyapproved in 1981.Last previous edition approved in 2008 as D4069 95(2008).DOI:10.1520/D4069-95R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,or
14、contact 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(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM
15、 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 normal operating conditions and those conditions which mayexist following a design basis accident(DBA).Adsorbent bedsthat are part of recirculatory systems inside containment maybe exposed to the peak pre
16、ssure,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 containment 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
