1、Copyright 1990 by The Institute of Electrical and Electronics Engineers, Inc.345 East 47th Street, New York, NY 10017-2394, New York, NYNo part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the priorwritten permission of the publisher.ANSI
2、 N42.17C-1989(R2005)American National Standard Performance Specifications for Health Physics Instrumentation- Portable Instrumentation for Use in Extreme Environmental ConditionsNational Committee on Radiation Instrumentation, N42accredited by the American National Standards InstituteSecretariatThe
3、Institute of Electrical and Electronics Engineers, Inc.Approved September 7, 1989Reaffirmed Janaury 4, 2005American National Standards InstituteAbstract: ANSI N42.17C-1989 American National Standard Performance Specifications for Health PhysicsInstrumentation-Portable Instrumentation for Use in Extr
4、eme Environmental Conditions, describes the mini-mum acceptable performance criteria for health physics instrumentation for use under extreme environmentalconditions for monitoring ionizing radiation fields. This standard supplements the basic performance specifica-tions for portable health physics
5、instrumentation presented in ANSI N42.17A-1989. Included in ANSI N42.17Care testing methods to be used to establish the acceptability of each type of instrumentation.American National StandardAn American National Standard implies a consensus of those substantially concerned with its scope and provis
6、ions.An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public.The existence of an American National Standard does not in any respect preclude anyone, whether he has approved thestandard or not, from manufacturing, marketing, purchasing, or us
7、ing products, processes, or procedures notconforming to the standard. American National Standards are subject to periodic review and users are cautioned toobtain the latest editions.CAUTION NOTICE:This American National Standard may be revised or withdrawn at any time. The procedures ofthe American
8、National Standards Institute require that action be taken to reafrm, revise, or withdraw this standard nolater than ve years from the date of publication. Purchasers of American National Standards may receive currentinformation on all standards by calling or writing the American National Standards I
9、nstitute.iiiForeword(This Foreword is not a part of ANSI N42.17C-1989, American National Standard Performance Specications for Health PhysicsInstrumentationPortable Instrumentation for Use in Extreme Environmental Conditions.)This standard is the responsibility of the Accredited Standards Committee
10、N42 on Radiation Instrumentation.Committee N42 delegated the development of the standard to its Subcommittee N42.1 Drafts were reviewed byCommittee N42, Subcommittee N42.1, and other interested parties, and the comments received were utilized inproducing the standard as nally approved and discussed.
11、 Performance criteria contained in this standard were testedfor applicability under the standard was approved by Committee N42 letter ballot of February 6, 1989.At the time it approved this standard, the Accredited Standards Committee on Radiation Instrumentation, N42, had thefollowing members:Louis
12、 Costrell, Chair Sue Vogel, Administrative SecretaryAmerican Conference of Governmental Industrial HygienistsJesse LiebermanBattelle pacic Northwest Laboratories.Jack M. SelbyHealth Physics society J. B. Horner KuperJack M. Selby (Alt.)Institute of Electrical and Electronics Engineers .Louis Costrel
13、lDavid C. Cook (Alt.)Julian Forster (Alt.)Anthony J. Spurgin (Alt.)Lawrence Berkeley LaboratoryLee J. WagnerLawrence Livermore National Laboratory Paul L. PhelpsNuclear Suppliers Association .Kenneth F. SinclairOak Ridge National Laboratory.Hugh R. BrashearUCLA Center for the Health Sciences.James E
14、. McLaughlinUS Department of the Army Edward GroeberUS Department of Commerce, National Institute of Standards and Technology Louis CostrellUS Department of Energy. Gerald GoldsteinUS Federal Emergency Management Agency Carl R. SiebentrittUS Nuclear Regulatory Commission Edward C. Wenzinger, Sr.Memb
15、ers-at-LargeJoseph G. BellianDavid C. cookErnesto A. CorteJohn M. GallagherDick A. MackEdward J. VallarioAt the time this standard was approved, Subcommittee N42.1 had the following members:Jack M. Selby, Chair J. G. BellianEdmond GoodaleJ. D. HendersonR. L. KathrenWilliam KleinH. W. PattersonC. R.
16、SiebentrittivThe working group for this standard had the following members:J. M. Selby, Chair K. L. Swinth, Vice Chair B. V. Anderson*J. G. BellianM. V. Federline J. A. FlaniganD. M. FlemingJ. A. Jones*J. N. LittleR. B. NeelG. J. OliverR. D. TerryR. P. UlmanC. K. BrownA. L. CucchiaraL. M. EarlsJ. G.
17、 FlahertyR. L. KathrenJ. L. Kenoyer*DeceasedReplaced by another NRC representativeConsultantThe following persons were on the balloting committee that approved this document for submission to the AccreditedStandards Committee N42:J. G. BellianH. R. BrashearD. C. CookL. CostrellJ. ForsterJ. M. Gallag
18、herG. GoldsteinE. GroeberJ. B. Horner KuperJ. LiebermanD. A. MackJ. E. McLaughlinJ. M. SelbyC. R. SiebentrittK. F. SinclairA. J. SpurginE. J. VallarioL. J. WagnerE. C. Wenzinger, Sr.vCLAUSE PAGE1. Scope.11.1 Introduction 11.2 References 22. Definitions.23. General Test Procedures .53.1 Applicability
19、 of Tests. 53.2 Standard Test Conditions . 53.3 Statistical Fluctuations . 54. General Characteristics .74.1 General . 74.2 Markings 74.3 Operability of Controls 84.4 Battery Power. 84.5 Battery Power Indicator . 95. Electronic and Mechanical Requirements and Test95.1 Check Circuits 95.2 Stability 9
20、5.3 Response Time. 105.4 Line Noise Susceptibility . 116. Radiation Response.116.1 Accuracy, Precision Energy Dependence 116.2 High-Energy Photons. 127. Interfering Responses127.1 NonIonizing Electromagnetic Radiations 128. Environmental Factors 138.1 Temperature . 138.2 Extreme Temperature Shock (M
21、ethod 1). 138.3 Temperature Shock (Method 2) . 148.4 Humidity and Temperature 148.5 Mechanical Shock 158.6 Vibration 158.7 Ambient Pressure . 158.8 Condensing Atmospheres 168.9 Instrument Durability. 168.10 Radiation Resistance 168.11 Drop Test 178.12 Moisture Exposure (Rain) 178.13 Moisture Exposur
22、e (Fog) . 17viCLAUSE PAGE9. Documentation 189.1 Type Test Report 189.2 Certificate. 189.3 Operation and Maintenance Manual 18Annex A (Informative)19Copyright 1990 IEEE All Rights Reserved1American National Standard Performance Specications for Health Physics InstrumentationPortable Instrumentation f
23、or Use in Extreme Environmental Conditions1. ScopeThis standard establishes minimum acceptable performance criteria for health physics instrumentation for use inionizing radiation elds under extreme environmental conditions. Included are testing methods to establish theacceptability of each type of
24、instrumentation. This standard does not specify which instruments or systems arerequired, nor does it consider the number of specic applications of such instruments. This standard supplements thebasic performance requirements for health physics instrumentation as specied in ANSI N42.17A 2.1Specicati
25、onsin this standard are expected to be called for by the user as required and should not be considered as generalspecications.1.1 IntroductionThe object of this standard is to provide basic performance requirements for instruments used for radiation protectionof personnel under extreme environmental
26、 conditions. The standard includes performance testing criteria for use ingeneric (type) tests of new instrument models.As used in this standard, health physics instrumentation provides direct readout of dose or dose equivalent, rate,2oractivity per unit area (i.e., effective probe area). Personnel
27、dosimeters, instruments designed to be used as individual orpersonal monitors or warning devices, environmental monitoring instruments, and air monitors are outside the scopeof this standard. Special purpose instrumentation, such as emergency post-accident radiological monitors, may alsofall under t
28、he scope of one or more related ANSI standards, and this standard is intended to supplement rather thanreplace these. In general, health physics instrumentation is considered to cover the dose (equivalent) rate range of 0.1mrad/h to 1000 rad/h (106Gy/h to 10 Gy/h); 0.1 mrem/h to 1000 rem/h (106Sv/h
29、to 10 Sv/h); or activity per unit area1The numbers in brackets correspond to those of the references listed in 1.2.2Until conversion to SI units is complete, readout of exposure (R) or exposure rate (R/h) will be considered acceptable for exposure to photonradiation.2Copyright 1990 IEEE All Rights R
30、eservedANSI N42.17C-1989 PERFORMANCE SPECIFICATIONS FOR HEALTH PHYSICS INSTRUMENTSranges for surface contamination monitors of 50 dpm/cm2to 10- dpm/cm2(0.83 Bq/cm2to 167 Bq/cm2) for beta/photon radiation and 1dpm/cm2to 10- dpm/cm2(0.02 aq/cm2to 167 Bq/cm2for alpha radiation.This standard species gen
31、eral characteristics; general test procedures; radiation characteristics; and electrical,mechanical, safety and environmental characteristics. Throughout this standard, three verbs have been used to indicatethe degree of rigor intended for each specic criterion. The word shallis used to denote a req
32、uirement, and the wordshouldto denote a recommendation, and the word mayto denote a permissible practice.Requirements and testing criteria to be used for the evaluation of occupational-type air monitoring instrumentation arediscussed in ANSI N42.17B-1989 3. Requirements and testing criteria related
33、to evaluation of portable radiationprotection instrumentation under normal environmental conditions are covered in ANSI N42.17A-1989 2.1.2 ReferencesThe following publications shall be used in conjunction with this standard. When standards in this document arereferred to, the latest revision shall a
34、pply.1 ANSI N13.4-1971 (R1983), Specication of Portable X- or Gamma-Radiation Survey Instruments.32 ANSI N42.17A-1989, Performance Specications for Health Physics InstrumentationPortable Instrumentation. 3 ANSI N42.17B-1989, Performance Specications for Health Physics InstrumentationOccupational Air
35、borneRadioactivity Monitoring Instrumentation. 4 ANSI/IEEE C62.41-1980, IEEE Guide for Surge Voltages in Low-Voltage ac Power Circuits.45 IEC Publication 68-2-27 (1987), Part 2, Test Ea and Guidance: Shock.56 IEC Publication 278:1968, Documentation to be Supplied With Electronic Measuring Apparatus.
36、7 Mil-Std 810D, 31 Jul 1983, Environmental Test Methods and Engineering Guidelines.62. DefinitionsFor the purpose of this document, the following denitions apply:acceptable source: Source of radiation listed in the appropriate reference source table.acceptance testing: Evaluation or measurement of t
37、he operational status of selected performance characteristics toverify that certain stated specications and contractual requirements are met.accuracy: The degree of agreement of the observed value with the conventionally true value of the quantity beingmeasured. Accuracy includes linearity, zero dri
38、ft, and hysterisis.adjust: To alter the response by means of a variable built-in control such as a potentiometer.alarm: An audible or visual signal or both activated when the instrument reading or response exceeds a preset valueor falls outside of a preset range.3ANSI publications are available from
39、 the Sales Department, American National Standards Institute, 1430 Broadway, New York, NY 10018.4ANSI/IEEE publications are available from the Institute of Electrical and Electronics Engineers, Service Center, 445 Hoes Lane, Piscataway, NJ08855-1331, or the Sales Department, American National Standa
40、rds Institute, 1430 Broadway, New York, NY 10018.5IEC publications are available from the Sales Department, American National Standards Institute, 1430 Broadway, New York, NY 10018.6Mil-Std publications are available from Global Engineering Documents, 1990 M Street, NW Suite 400, Washington DC 20036
41、.Copyright 1990 IEEE All Rights Reserved3PORTABLE INSTRUMENTATION FOR USE IN EXTREME ENVIRONMENTAL CONDITIONS ANSI N42.17C-1989angular dependence: Response of the detector as a function of the angle of incidence of the radiation being detected.beta cut-off energy: The minimum energy required for a b
42、eta particle for that particle to travel a specic distancethrough a known media.calibrate: To adjust or determine or both: (1) the response or reading of an instrument relative to a series ofconventionally true values; or (2) the strength of a radiation source relative to a standard or conventionall
43、y true value.coefcient of variation: The standard deviation, expressed as a percentage of the mean i.e., (standard deviation/x)(100).condensing environment: Exposure to cycles of cool and warm humid atmospheres that cause condensationequipment.contamination meter: An assembly, including one or sever
44、al radiation detectors and associated subassemblies,designed to measure (alpha, beta, alpha-beta) activity per unit surface area associated with the contamination of theexamined object.conventionally true value of a quantity: The commonly accepted best estimate of the value of that quantity. This an
45、dits associated uncertainty will normally be determined by a national or transfer standard, or by a reference instrumentwhich has been calibrated against a national or transfer standard, or by measurement quality assurance (MQA) with anational laboratory or qualied secondary laboratory.decade: A ran
46、ge of values for which the upper limit is a power of ten above the lower limit.detection axis: A specied imaginary line through the effective center of the detector to which the radiation elddirection can be referenced.detection limit: The extreme of detection or quantication for the radiation of in
47、terest by the instrument as a whole oran individual readout scale or decade. The lower detection limit is the minimum quantiable instrument response orreading. The upper detection limit is the maximum quantiable instrument response or reading. Quantiable, in thiscase, means within the specied accura
48、cy.drift: Change in readout, usually gradual, without concomitant change in the inuence quantity.durability: A cycle of temperature, humidity, shock and vibration to simulate environmental exposure in anaccelerated mode.effective center: The point within a detector that produces, for a given set of
49、irradiation conditions, a responseequivalent to that which would be produced if the entire detector were located at the point.effective energy: The energy used to characterize a heterogeneous radiation eld that behaves under speciedconditions as if it were a monoenergetic radiation eld of the same energy.energy dependence: A change in instrument response with respect to radiation energy for a constant exposure orexposure rate.evaluation: Interpretation of measurements and observations, including determination of comp
