AS/NZS 2211.2:1997

1 - AS/NZS 2211.2:1997 LASER SAFETY - SAFETY OF OPTICAL FIBRE COMMUNICATION SYSTEMS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 DEFINITIONS
6 - 3.1 Accessible location
7 - 3.2 Automatic power reduction (APR)
7 - 3.3 Enclosed system
7 - 3.4 End user
7 - 3.5 FITS
7 - 3.6 Hazard level
7 - 3.7 Hazard Level 1
7 - 3.8 Hazard Level 2
7 - 3. 9 Hazard Level 3A
7 - 3.10 Hazard Level k x 3A
7 - 3.11 Hazard Level 3B
7 - 3.12 Hazard Level 4
7 - 3.13 HITS
7 - 3.14 Light emitting diode (LED)
8 - 3.15 Local operator control
8 - 3.16 Location with controlled access
8 - 3.17 Location with restricted access
8 - 3.18 Location with unrestricted access
8 - 3.19 Manufacturer
8 - 3.20 Operating organization
8 - 3.21 Optical fibre communication system (OFCS)
8 - 3.22 Reasonably foreseeable event
8 - 4 MANUFACTURING REQUIREMENTS
8 - 4.1 Engineering specifications
9 - 4.2 Labelling
9 - 4.3 Provision of information
10 - 4.4 Assessment of hazard level
11 - 4.5 Requirements for installation
11 - 5 GUIDANCE FOR SERVICE AND MAINTENANCE
11 - 5.1 Tests and measurements
11 - 5.2 Safety precautions
13 - APPENDIX A - RATIONALE
15 - APPENDIX B - SUMMARY OF ENGINEERING REQUIREMENTS AT LOCATIONS IN OPTICAL FIBRE COMMUNICATION SYSTEMS
16 - APPENDIX C - METHODS OF HAZARD/ SAFETY ANALYSIS
17 - APPENDIX D - APPLICATION NOTES
17 - D1 SCOPE
17 - D2 AREAS OF APPLICATION
17 - D2.1 Typical optical fibre installations
17 - D2.2 Typical hardware components
18 - D2.3 Typical conditions
18 - D3 OPTICAL FIBRE SYSTEM POWER LIMITS
18 - D4 HAZARD LEVEL EVALUATION EXAMPLES
18 - D4.1 General
18 - D4.2 Multiple wavelengths over the same fibre
20 - D4.3 Bi-directional (full duplex) transmission
20 - D4.4 Automatic power reduction
23 - D4.5 Multiple fibres
23 - D4.6 Ribbon cable
23 - D4.7 Ribbon fibre example calculation
24 - D4.8 Power diminution
24 - D4.9 General considerations and examples
24 - D5 FAULT ANALYSIS
24 - D5.1 General
24 - D5.2 Fault probability levels
25 - D5.3 Recommended fault analysis technique
25 - D6 RECOMMENDED WORKING PRACTICES
25 - D6.1 General
25 - D6.2 General working practices
26 - D6.3 Live working practices for Hazard Level 1, 2, and 3A locations
26 - D6.4 Live working practices for Hazard Level k x 3A locations
26 - D6.5 Working practices for Hazard Level 3B systems and locations
26 - D6.6 Examples of power-down and power-up procedures for Hazard Level 3B locations
27 - D8 BIBLIOGRAPHY

Gives requirements and guidance for the safe use of optical fibre or control communication systems, or both, where optical power may be accessible at a great distance from the optical source. It does not apply to optical fibre systems primarily designed to transmit optical power for applications such as material processing or medical treatment. It is based on, but not equivalent to, IEC 825-2:1993.

This Standard provides requirements and specific guidance for the safe use of optical fibre or control communication systems, or both, where optical power may be accessible at great distance from the optical source. It does not apply to optical fibre systems primarily designed to transmit optical power for applications such as material processing or medical treatment.Throughout this Standard, light emitting diodes (LEDs) are included whenever the word 'laser' is used.The objective of this Standard is to provide the following:(a) Protect people from optical radiation resulting from optical fibre communication systems.This requires the introduction of engineering requirements and work practices according to the degree of hazard.(b) Lay down requirements for manufacturers and operating organizations in order to establish procedures and supply information so that proper precautions can be adopted.(c) Ensure adequate warning to individuals of hazards associated with optical fibre communication systems through signs, labels and instructions.(d) Reduce the possibility of injury by minimizing unnecessary accessible radiation and to give improved control of the optical radiation through protective features and provide safe usage of products by specifying user control measures.NOTE: Appendix A gives a more detailed rationale for this Standard.Classification of laser products, including optical fibre transmission equipment and test equipment, is covered in AS/NZS 2211.1.

First published as AS/NZS 2211.2:1997.