BS EN 401:1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Respiratory protective devices for self-rescue. Self-contained closed-circuit breathing apparatus. Chemical oxygen (KO2) escape apparatus. Requirements, testing, marking
Hardcopy , PDF
26-11-2002
English
15-02-1993
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Cooperating organizations
National foreword
Foreword
Specification
Introduction
1. Scope
2. Normative references
3. Definitions and description
4. Classification
5. Requirements
6. Testing
7. Instructions for use
8. Marking
Annexes
A. (normative) Additional requirement for apparatus
designed for special use
B. (normative) Methods of measurement of the insulation
resistance of the carrying container
Tables
1. Test conditions
Figures
1. Test piece with painted electrodes
2. Apparatus for testing of flammability
3. Test equipment for mechanical strength
4. Scheme of relief valve leakage test box
5. Scheme of test rig for valve leakage using a
single cylinder breathing machine
6. Scheme of test rig for relief valve leakage using
a twin cylinder breathing machinei
7. Scheme of test rig for chemical oxygen (KO2) escape
apparatus
8. Cooler
9. Humidifier
10. Dummy head for apparatus with permanently connected
full face mask
11. Connector for apparatus having a permanently
connected mouthpiece assembly
B.1 Current measurement by microammeter or galvanometer
B.2 (a) Current measurement by means of a d.c. amplifier
B.2 (b) Current measurement by means of a d.c. amplifier
B.3 (a) Determination of the ratio of currents when the
same voltage is applied successively to the two
resistances
B.3 (b) Wheatstone bridge method
National annexes
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references
Specifies minimum requirements for chemical oxygen (KO2) escape apparatus. Refers to self contained, closed circuit breathing apparatus, chemical oxygen (KO2) type, for escape. Does not apply to devices for rescue and work or to diving devices. Coverage includes definition and description, classification and marking. Also includes annexes and diagrams.
| Committee |
PH/4
|
| DevelopmentNote |
DRAFT FOR COMMENT 90/45545 DC. Partially supersedes BS 4667: Part 5: 1990 which will remain current until European Standards for all types of self-contained breathing apparatus are published.
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| NS EN 401 : 1993 | Identical |
| I.S. EN 401:1993 | Identical |
| UNE-EN 401:1994 | Identical |
| NF EN 401 : 1993 | Identical |
| UNI EN 401 : 1994 | Identical |
| NEN EN 401 : 1993 | Identical |
| NBN EN 401 : 1993 | Identical |
| EN 401 : 1993 | Identical |
| DIN EN 401:1993-06 | Identical |
| BS 7184:2001 | Selection, use and maintenance of chemical protective clothing. Guidance |
| BS 4275:1997 | Guide to implementing an effective respiratory protective device programme |
| EN 132:1998 | Respiratory protective devices - Definitions of terms and pictograms |
| EN 134:1998 | Respiratory protective devices - Nomenclature of components |
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