ISO-8194-1987.pdf
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1、INTERNATIONALSTANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOJJHAR OPrAH3AMR IlO CTAHAAPTMSAWI Radiation protection - Clothing for protection against radioactive contamination - Design, selection, testing and use Protection contre les ray
2、onnements - Etements de protection contre la contamination radioactive - Conception, choix, essais et utilisation IS0 8194 First edition 1987-06-01 Reference number IS0 8194: 1987 Q Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technica
3、l Standards 1/9972545001 Not for Resale, 04/20/2007 06:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing I
4、nternational Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liais
5、on with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75
6、 % approval by the member bodies voting. International Standard IS0 8194 was prepared by Technical Committee ISO/TC 85, Nuclear energy. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies
7、 its latest edition, unless otherwise stated. 0 International Organizaticn for Standardization, 1987 0 Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 0
8、6:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8194 : 1987 (El Contents Page 1 Scope and field of application 1 2 References 1 3 Definitions . . 1 4 Ventilated-pressurized garments 1 4.1 Classification . 1 4.2 Leak-tightness 2 4.3 Manufacturing materials 2 4.4
9、Manufacture 2 4.5 Breathing air supply and internal ventilation 2 4.6 Soundpressurelevelandvoicetransmission . 4 4.7 Protection against tritium . 4 4.8 User s instructions . 4 5 Unventilated-unpressurized garments . 4 5.1 Manufacturing materials 4 5.2 Manufacture 5 Annexes Test method for determinin
10、g the level of respiratory protection against aerosols of ventilated-pressurized garments , . . . . . . . , . . . . . . . . . . . . . . . . . . . . 6 Method for measuring leak-tightness of ventilated-pressurized garments . . . I 8 Method for measuring air supply flow rate of ventilated-pressurized g
11、arments 10 Internal ventilation systems I l.l.,I,I.,.,.1,.,I, 11 Exhaust devices I.I.1.I.I.I.,.II,I.,II.,*, 12 Selection and conditions for use of clothing for protection against radioactive contamination ,.*,., 13 Copyright International Organization for Standardization Provided by IHS under licens
12、e with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 8194 : 1987 (E) Radiation protection - Clothing for protection against radioactive contamination - Design
13、, selection, testing and use 1 Scope and field of application This International Standard gives the characteristics of clothing protecting the wearer against radioactive contamination brought about by contact with liquid or solid substances or by atmospheric pollutants, such as solid particles, mist
14、, gases or vapours. The International Standard applies to two types of clothing: firstly, ventilated-pressurized garments; secondly, unven- tilated-unpressurized garments. A test method according to which any new type of garment can be assigned a protection factor that makes it easier for the user t
15、o make a choice is described in annex A. Annexes B and C give methods for measuring leak-tightness and air supply flow rates of ventilated-pressurized garments. Annex F gives, for guidance purposes only, recommendations for choosing protective clothing. 2 References IS0 3873, industrial safety helme
16、ts. IEC Publication 651, Sound /eve/ meters. 3 Definitions 3.1 ventilated-pressurized garments: Protective clothing made from impermeable material which is supplied with breathable air ensuring internal ventilation and overpressure. These garments provide protection for the respiratory tract and the
17、 whole body (head, hands and feet) or only the upper part of the body. 3.2 unventilated-unpressurized garments: Protective clothing made from impermeable or permeable material without an internal ventilation device. These garments are not intended to provide protection for the respiratory tract but
18、they provide protection for other parts of the body. 3.3 protection factor for clothing: The ratio of the average concentrations of pollutant measured in the ambient atmosphere and inside the helmet of the suit at the point where the wearer draws breath. The concentrations taken into account are the
19、 average concen- trations recorded during a standardized test (see A.1 1.8). 4 Ventilated-pressurized garments 4.1 Classification 4.1.1 General Ventilated-pressurized clothing is divided into four classes, depending on the way in which the air is released. Recommendations as to the selection of garm
20、ent types for dif- ferent operating conditions are given in annex F. The four classes are given in 4.1.2 to 4.1.5. 4.1.2 Class I: Ventilated-pressurized clothing with a channelled outlet outside the shield In class I clothing, the exhaust air is channelled and released at a distance from the ambient
21、 atmosphere (e.g. an argon at- mosphere) so that the composition of the latter is not affected. 4.1.3 Class II : Ventilated-pressurized clothing with a controlled and channelled outlet In class II clothing, the exhaust devices (valves, perforations, particulate and gas filters) are fitted with a cha
22、nnel which directs the exhaust air over a specified distance so as to pre- vent, by ensuring a fast enough exhaust speed, back-diffusion of pollutants. 4.1.4 Class Ill: Ventilated-pressurized clothing with a controlled outlet In class Ill clothing, the air is released through exhaust devices (valves
23、, perforations, particulate and gas filters) into the sur- rounding atmosphere. 4.1.5 Class IV: Ventilated-pressurized clothing with an uncontrolled outlet In class IV clothing, the air escapes freely into the surrounding atmosphere (through belt, sleeves, etc.). 1 Copyright International Organizati
24、on for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- I b) thermal factors, e-g, incandescent particles, high specific activity particl
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