AS 2290.1-1990

1 - AS 2290.1-1990 ELECTRICAL EQUIPMENT FOR COAL MINES - MAINTENANCE AND OVERHAUL - MAINTENANCE OF ELECTRICAL EQUIPMENT FOR HAZA
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.
7 - SECTION 2. FLAMEPROOF ENCLOSURE (Ex d)
7 - 2.1 GENERAL.
7 - 2.1.1 Characteristics of flameproof enclosures.
7 - 2.1.2 Lubricants or corrosion inhibitors.
7 - 2.1.3 Motors.
7 - 2.1.4 Fixing bolts, studs and nuts.
7 - 2.1.5 Attachments.
7 - 2.1.6 Replacement.
7 - 2.2 REPAIR IN SITU.
7 - 2.3 EQUIPMENT APPROVAL.
7 - 2.4 EXAMINATION FREQUENCY.
7 - 2.5 EQUIPMENT EXAMINATION.
7 - 2.5.1 General.
7 - 2.5.2 Safety switching.
7 - 2.5.3 Examination schedules.
7 - 2.6 EXAMINATION SCHEDULES.
7 - 2.6.1 Code A-External examination.
9 - 2.6.2 Code B-Semi-internal examination.
9 - 2.6.3 Code C-Internal examination.
9 - 2.6.4 Code C1-Examination.
10 - 2.7 EQUIPMENT OVERHAUL.
11 - APPENDIX A - PRINCIPLES OF FLAMEPROOF ENCLOSURES
11 - A1 INTRODUCTION.
11 - A2 CHARACTERISTICS OF FLAMEPROOF ENCLOSURES.
11 - A3 MAINTENANCE OF FLAMEPROOF ENCLOSURES.
11 - A3.1 General.
11 - A3.2 Flameproof motors.
12 - A3.3 Maximum surface temperature.
12 - A3.4 Fixing bolts, studs and nuts.
12 - A3.5 Breathing devices.
13 - APPENDIX B - METHOD OF TEMPORARY REPAIR FOR HOLE OR THREAD
14 - APPENDIX C- TYPICAL SAFETY SWITCHING INSTRUCTIONS
15 - APPENDIX D - TYPICAL ‘CODE A’ EXTERNAL EXAMINATION REPORT FORM
16 - APPENDIX E - TYPICAL ‘CODE B’ SEMI-INTERNAL EXAMINATION REPORT FORM
17 - APPENDIX F - TYPICAL ‘CODE C’ INTERNAL EXAMINATION REPORT FORM
18 - APPENDIX G - TYPICAL ‘CODE C1’ EXAMINATION REPORT FORM
19 - APPENDIX H - CORROSION OR SURFACE INDENTATION TOLERANCES
20 - APPENDIX I - TESTS OF JOINT SURFACES USING STRAIGHTEDGES
21 - APPENDIX J - CHECKS OF CIRCULAR FLANGES, SPIGOTS AND HOLES

Specifies requirements for the examination and repair of electrical equipment for hazardous areas in use in and around underground coal mines. 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.

This Standard sets out requirements for the examination and repair of electrical equipment for hazardous areas in 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.NOTE: Attention is also 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.