BS 6704:1996
Current
The latest, up-to-date edition.
Code of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines
Hardcopy , PDF
English
15-11-1996
Committees responsible
Foreword
Code of Practice
Section 1. General
1.1 Scope
1.2 References
1.3 Definitions
1.4 Information on legislation
1.5 Information on certification
1.6 Information on certification of electrical
apparatus and systems
1.7 Marking of apparatus certified to BS 5501 Part 7
Section 2. Selection and installation of electrical
apparatus and systems
2.1 Selection
2.2 Installation
Section 3. Inspection and testing
3.1 General
3.2 Inspection
3.3 Routine inspection
3.4 Insulation and earth continuity testing
3.5 Records
Section 4. Maintenance and repair
4.1 General
4.2 Maintenance work in a hazardous area
4.3 Maintenance work in a non-hazardous area
4.4 Cable disconnection
4.5 Batteries
4.6 Electrical measuring instruments
4.7 Repair and overhaul
Annexes
A (normative) Competence of personnel
B (informative) Characteristics of mining type cables
Tables
1 Standards dealing with the design, construction and
testing of electrical apparatus for use in
hazardous atmospheres
B.1 Telephone cable inductance and resistance ratios
(nominal values)
B.2 Signalling cable inductance and resistance ratios
(nominal values)
B.3 Electrical characteristics of pliable wire
armoured cables to BS 6708:1991 (nominal values)
B.4 Electrical characteristics of two-core steel wire
armoured cables to BS 6708:1991 (nominal values)
Figures
1 Certification mark
2 Example of marking of apparatus for connection
to other apparatus and which does not incorporate
a power source
3 Example of marking of a mains driven power supply
unit contained within a flameproof enclosure
List of references
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