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1、J IS JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association Glove box for handling of radioactive substance ICs 13.280; 27.120.30 Reference number : JIS 2 4808 : 2002 (E) PROTECTED BY COPYRIGHT 9s Copyright Japanese Standards Association Provided by IHS under lice
2、nse with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- Z 4808 : 2002 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minis
3、ter of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently, JIS Z 4808 : 1975 is replaced with JIS Z 4808 : 2002. Date of Establishment: 1960-05-01 Date of Revision: 2002-04-20 Date of Pu
4、blic Notice in Official Gazette: 2002-04-22 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Protective Equipment for Occupational Safety TIS Z 4808 : 2002, First English edition published in 2003-08 Translated and published by: Japanese Standards Assoc
5、iation 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any m
6、eans, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for
7、Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 4808 : 2002 Contents Page Introduction . 1 2 3 4 5 5.1 5.2 5.3 6 6.1 6.2 6.3 6.4 6.5 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 Scope Normative references Definitions Type and class . Performance Air l
8、eakage Exhaust capacity Electrical insulating resistance . Material . Main body Window plate Gasket Glove Glove port Structure in general Main body . Air supply and exhaust opening . High performance air filter . Window plate Glove port Glove Frame . Carrying out and taking in opening Exhaust system
9、 1 1 1 1 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 PROTECTED BY COPWIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license
10、from IHS -,-,- Z 4808 : 2002 7.10 7.11 7.12 7.13 7.14 7.15 7.16 8 8.1 8.2 8.3 8.4 8.5 9 10 11 12 Connector Utility pipe arrangement . Lighting system . Plug receptacle and switch Indicator Shielding body Quenching devices . Tests . Test items . Structure test . Air leakage test Exhaust capacity test
11、 . Electrical insulating resistance test Inspection Designation of products Marking . Instructions for use . Related standards . Annex 1 (informative) Comparison table between JIS and corresponding International Standard . 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 7 7 8 9 (ii) PROTECTED BY COPYRIGHT Copyright J
12、apanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS 2 4808 : 2002 Glove box for handling
13、 of radioactive substance Introduction This Japanese Industrial Standard has been prepared based on IS0 10648-2 Containment enclosures-Part 2 : Classification according to leak tightness and associated checking methods issued in 1994 with modifying some part of the technical contents. Portions sidel
14、ined or underlined with dots are the matters which the original In- ternational Standard is modified. A list of modification is given in Annex with ex- planations. 1 Scope This Standard specifies the glove box used for confining the radioactive substance for the protection of operators and working e
15、nvironment in a business place wherein the radioactive substances are treated. Remarks : The International Standard corresponding to this Standard is as fol- lows. In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are I
16、DT (identical), MOD (modified), and NEQ (not equivalent) ac- cording to ISODEC Guide 21. IS0 10648-2 : 1994 Containment enclosures-Part 2 : Classification ac- cording to leak tightness and associated check- ing methods (MOD) 2 Normative references The following standards contain provisions which, th
17、rough reference in this Standard, constitute provisions of this Standard. The most recent edition of the standards (including amendments) indicated below shall be applied. JIS Z 4001 Glossary of terms used in nuclear energy JIS Z 4812 JIS Z 4820 HEPA filters for radioactive aerosols Test method for
18、leakage of glove boxes 3 Definitions 4001 and the following apply. a) For the main terms used in this Standard, the definitions in JIS Z glove box for handling of radioactive substance A box-type apparatus to which a window, a glove and others are fitted so that radioactive substance can be treated
19、in an isolated state to prevent radioactive contamination and radia- tion exposure. radioactive substance Radioactive isotope and nuclear fuel material and those contaminated therewith. b) c leak rate It express the airtightness of a glove box quantitatively, which means the rate wherein air in the
20、glove box leaks per time. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 Z 4808
21、: 2002 Form I Type I d) negative pressure lower than the ambient pressure. exhaust capacity A pressure state wherein a pressure in the glove box is e) Capacity for exhausting the inside of a glove box. Remarks 4 Type and class The types and classes of glove boxes are shown in Table 1 and Table 2. Ty
22、pe 1 Exhaust system packaged type An exhaust system is affixed to the glove box main body . Type 2 Exhaust system separated type Those except type 1 . I Table 2 Class of glove box Class 1 Class 2 Class 3 1 Class I Leak rate 1 Remarks I -i 0.25 vol %/h s 1.0 vol %/h I 10 vol %/h A glove box treating
23、a great amount of radioactive substance A glove box treating a medium amount of radioactive substance A glove box treating a small amount of radioactive substance 5 Performance A glove box shall have the following performances. 5 . 1 satisfied according to the class. Air leakage When tested by 8.3,
24、the leakage rate given in Table 2 shall be 5 . 2 shall satisfy the following requirements. a) Exhaust capacity When tested by 8.4, the exhaust capacity of a glove box A gas volume necessary for keeping 20.5 m/s of passing wind velocity at an opening part when one glove port is opened. A gas volume n
25、ecessary for keeping a specific temperature or lower by cooling down the heat generated from the equipment and the like inside the glove box. A gas volume necessary for keeping a specific concentration or lower by dilut- ing hazardous gas and particles generated inside the glove box. b) c) 5 . 3 glo
26、ve box, when tested in accordance with 8.5 shall be 2 5 MQ. Electrical insulating resistance The insulation of electric parts used for a 6 Material Materials used for respective parts of a glove box shall have corro- sion resistance and the parts contacting radioactive substance shall be materials o
27、f good decontaminability. Materials for principal components shall be as follows. 6.1 Main body Stainless steel shall be used for the main body. When corrosion resistance is required, synthetic resin or synthetic resin coated stainless steel may be used. PROTECTED BY COPYRIGHT Copyright Japanese Sta
28、ndards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- Y Z 4808 : 2002 6.2 strength shall be used as a window plate. Window plate Synth
29、etic resin or glass having sufficient transparency and 6.3 Gasket As the gasket of an airtight holding parts between the window plate and the main body, the glove port and the window plate, the connector and the main body, the glove box and the main body and the like, materials of chloroprene rubber
30、 and the like shall be used according to the practical environment. 6.4 Glove As a glove, materials of chloroprene rubber, chlorosulfonatedpolyethylene, butyl rubber or ethylene-propylene shall be used according to the practical environ- ment. 6.5 be used. Glove port As a glove port, synthetic resin
31、, aluminium or stainless steel shall 7 Structure in general The shape of a glove box is exemplified in Fig. 1. While inside of the glove box is observed under a state wherein radioactive substances are enclosed, an operator can operate the radioactive substances or internal equipment. It shall be so
32、 constructed and process Finished as to be easily decontaminated, when the inside of glove box is contaminated by radioactive substances. As a rule, the apparatus and parts as given in 7.2 to 7 . 1 6 shall be equipped in the glove box. 7.1 Main body The glove box shall be a shell-structured or frame
33、-structure. The former is applied to a small glove box and the latter is applied to a medium to large glove boxes. 7.1.1 Basic shape The shape of a glove box shall be about integral multiples of 0.5 m for height and width. Depth is about 1 m in the case of both-faced operation and about 0.7 m in the
34、 case of side-faced operation. 7.1.2 Corner part The bent part and the corner part of each side inside a glove box shall be shaped for easy decontamination and shall have smooth surfaces. 7.1.3 Earthquake-proof property A glove box shall have a structure capable of sufficiently durable seismical pow
35、er estimated based on required antiseismical de- sign. 7.2 Air supply and exhaust opening An air supply opening and an air exhaust opening which have a high performance air filter shall be provided to a glove box main bod y. 7.3 High performance air filter A high performance air filter which is fitt
36、ed to the air supply opening and the air exhaust opening of a glove box shall conform to the performance specified in clause 4 of JIS Z 4812. 7.4 Window plate A window plate shall have a shape capable of easily securing airtightness by being fixed to a glove box by a method which is free from bad in
37、flu- ence of a pressing force due to an outer force. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without licen
38、se from IHS -,-,- 4 Z 4808 : 2002 7.5 Glove port For a glove port, necessary number of glove ports shall be fitted to a glove box main body or to a window plate in order to perform a test, mainte- nance of instrument and others. 7.6 for operation inside the glove box and it shall have five fingers.
39、Glove The length of a glove shall be a length which is free from hindrance 7.7 Frame A frame shall have an appropriate height so that a glove can be eas- ily operated. 7.8 Carrying out and taking in opening shall have a size suitable for taking in instruments and carrying out contaminants and shall
40、be so structured to be capable of being operated while airtightness is kept. Carrying out and taking in opening 7.9 Exhaust system An exhaust system shall have a structure wherein an elec- tric motor is not directly exposed to the exhaust. In order to maintain a negative pressure in the glove box al
41、ways within a specific range, a mechanism such as a back draft damper and the like shall be provided as occasion demands. 7.10 Connector A connector for relaying the electric power and the electric sig- nal to the instrument shall have a structure capable of keeping an airtightness and shall be prov
42、ided to the glove box main body as occasion demands. 7.11 Utility pipe arrangement For the utility pipe arrangement of water, chemi- cals, compressed air and the like, valves shall be provided near the connection part of the glove box main body. 7.12 Lighting system In order to operate in a glove bo
43、x, a lighting system of an appropriate illuminance for operation shall be installed by a structure which is free from disturbance against the operation. 7.13 Plug receptacle and switch A plug receptacle and a switch shall be equipped inside and outside a glove box as occasion demands. 7.14 Indicator
44、 A differential pressure gauge for indicating a pressure difference between inside and outside a glove box shall be provided. A thermometer shall be provided as occasion demands. 7.15 Shielding body A shielding body shall be provided as occasion demands ac- cording to 1 cm dose equivalent rate of wo
45、rking environment caused by radioactive substance in a glove box. 7.16 Quenching devices quenching device shall be installed. In case where fire may be occurred in a glove box, a PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employ
46、ees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 2 4808 : 2002 High Back Connector Canying out and taking in opening High performance performance air filter b Lighting system I . Main body $- Glove port
47、Window y plate J Frame Fig. 1 Example of a glove box of simple shape PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 22:39:53 MDTNo reproduction or networking permitt
48、ed without license from IHS -,-,- 6 Z 4808 : 2002 Test item 8 Tests 8.1 in Table 3. Test items Test items according to the type of a glove box shall be as shown Type and class of glove box Table 3 Test Class 1 O Class 2 Class 3 Class 1 Class 2 Class 3 O O O O O i i I I O O Structure test _ - - O O O O O O O Air leakage test Exhaust capacity test Electrical insulation test Type 1 I Type 2 Remarks : The mark O indicates items to be executed. 8.2 shall be examined. Structure test Wh