AS 2290.3-1990

1 - AS 2290.3-1990 ELECTRICAL EQUIPMENT FOR COAL MINES - MAINTENANCE AND OVERHAUL - MAINTENANCE OF GAS DETECTING AND MONITORING
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED DOCUMENTS.
6 - 1.3 DEFINITIONS.
6 - 1.3.1 Accredited test authority
6 - 1.3.2 Accredited workshop
6 - 1.3.3 Authorized person
6 - 1.3.4 Certified test gas
6 - 1.3.5 Certificate of Compliance
6 - 1.3.6 Verification check
6 - 1.3.7 Full scale concentration
6 - 1.3.8 Gas sensing element
6 - 1.3.9 Gas detector head
6 - 1.3.10 Examination
6 - 1.3.11 Electrical zero
6 - 1.3.12 Mechanical zero
6 - 1. 3.13 Zero gas
6 - 1.3.14 Zero gas conditions
6 - 1.3.15 Zero test
6 - 1. 3.16 Span test
7 - 1.3.17 Calibration
7 - 1.3.18 Measuring range
7 - 1.3.19 Output
7 - 1.3.20 Set point
7 - 1.4 EQUIPMENT CLASSIFICATION.
7 - 1.4.1 General.
7 - 1.4.2 Class I.
7 - 1.4.3 Class II.
7 - 1.4.4 Class III.
7 - 1.4.5 Class IV.
7 - 1.5 EXAMINATION FREQUENCY.
7 - 1.6 EXAMINATION RESPONSIBILITY.
7 - 1.7 EXAMINATION LOCATIONS.
7 - 1.8 CERTIFICATE OF COMPLIANCE.
8 - 1.9 RECORDS.
8 - 1.9.1 General.
8 - 1.9.2 Examinations.
8 - 1.9.3 Defects.
8 - 1.10 ACCURACY REQUIREMENTS.
8 - 1.10.1 Zero tests.
8 - 1.10.2 Verification/Calibration tests.
8 - 1.10.3 Interpretation of specified limiting values.
8 - 1.11 OVERHAUL.
9 - 1.12 USER/FIELD SERVICEABLE ITEMS.
9 - 1.12.1 Procedures.
9 - 1.12.2 Records.
10 - SECTION 2. EXAMINATION SCHEDULES
10 - 2.1 GENERAL.
10 - 2.2 CLASS I EQUIPMENT.
10 - 2.2.1 Class Ia equipment.
11 - 2.2.2 Class Ib equipment.
11 - 2.3 CLASS II EQUIPMENT.
11 - 2.3.1 Shift examination.
11 - 2.3.2 Equipment zero check.
11 - 2.3.3 Verification check.
12 - 2.3.4 Alarm functions.
12 - 2.3.5 Power switching.
12 - 2.3.6 Examination by accredited test authority.
12 - 2.3.7 Equipment overhaul.
12 - 2.4 CLASS III EQUIPMENT.
12 - 2.4.1 System status check.
12 - 2.4.2 Monthly system check.
13 - 2.4.3 Relocation check.
13 - 2.4.4 Power switching.
13 - 2.4.5 Examination by accredited test authority.
13 - 2.5 CLASS IV EQUIPMENT.
13 - 2.5.1 Class IVa equipment.
14 - 2.5.2 Class IVb and IVc equipment.
15 - APPENDIX A - TYPICAL CERTIFICATE OF COMPLIANCE
16 - APPENDIX B - SAMPLE LAYOUTS FOR RECORDING EQUIPMENT DEFECTS
16 - B1 RECORD OF WEEKLY/MONTHLY EXAMINATION OF GAS DETECTING EQUIPMENT.
17 - B2 RECORD OF DEFECTS DETECTED AS A RESULT OF SHIFT/DAILY EXAMINATION OF GAS DETECTING EQUIPMENT.
18 - B3 HISTORY OF DEFECTS.
19 - APPENDIX C - ACCURACY REQUIREMENTS
19 - C1 EQUIPMENT OTHER THAN OXYGEN SENSING.
19 - C2 OXYGEN SENSING EQUIPMENT.
20 - APPENDIX D - MINIMUM REQUIREMENTS FOR AUTHORIZED PERSONS AND ACCREDITED TEST AUTHORITIES
20 - D1 SCOPE.
20 - D2 AUTHORIZED PERSONS.
20 - D3 ACCREDITED TEST AUTHORITIES.
20 - D3.1 General.
20 - D3.2 Calibration procedures.
21 - APPENDIX E - TECHNIQUE AND EQUIPMENT GUIDELINES FOR VERIFICATION CHECKS
21 - E1 GENERAL.
21 - E2 IN SITU OR ON SITE ZERO AND SPAN CHECKS.

Sets out general requirements and schedules for the regular inspection, testing and calibration of gas detecting and monitoring equipment for use in and around underground coal mines.

This Standard sets out requirements for the examination and calibration of gas detecting and monitoring equipment for use in and around underground coal mines. It details methods of examination, maintenance and testing required to ensure safety, compliance with relevant Standards and trouble-free operation while the equipment is in service. Organizations and personnel engaged in the examination, repair and testing of gas detecting equipment may be required to be approved for the purpose by the relevant Regulatory Authority. Minimum requirements for authorized persons and accredited test authorities are given in Appendix D.NOTES:1. Gas detector tubes, of either sample draw or diffusion types, which rely on a visually detectable chemical change in the presence of a gas, are not subject to the requirements of this Standard.2. Attention is drawn to the various Mines Acts, the Regulations under these Acts, and also any other appropriate statutory requirements or by-laws. These place the prime responsibility for complying with specific safety requirements on the manufacturer or user of the equipment.