AS 2845.3-1993

1 - AS 2845.3-1993 WATER SUPPLY - BACKFLOW PREVENTION DEVICES - FIELD TESTING AND MAINTENANCE
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 APPLICATION
7 - 1.3 REFERENCED DOCUMENTS
7 - 1.4 DEFINITIONS
8 - SECTION 2 FIELD TESTING AND MAINTENANCE
8 - 2.1 FIELD TESTING
8 - 2.2 REPORTING OF TEST RESULTS AND REPAIRS
8 - 2.3 SAFETY AND MAINTENANCE
8 - 2.3.1 Electrical safety precautions- earthing
8 - 2.3.2 Fire brigade
9 - 2.3.3 General
10 - APPENDIX A - SAFETY GUIDELINES
10 - A1 GAS AND PITS
10 - A2 TESTING IN A PIT
10 - A3 AVOID ELECTRICAL SHOCK
10 - A4 ELECTRICAL EQUIPMENT
10 - A5 DIMLY-LIT AREAS
10 - A6 GET PERMISSION! NEVER
10 - A7 TESTING IN FIRE LINES
10 - A8 TESTING ELEVATED DEVICES
10 - A9 SUITABLE SAFETY EQUIPMENT
11 - A10 OTHER SAFETY DEVICES
11 - A11 NOTIFY OWNER BEFORE SHUTTING OFF WATER
12 - APPENDIX B - FIELD TESTING OF REGISTERED AIR GAPS AND REGISTERED BREAK TANKS
12 - B1 SCOPE
12 - B2 PRINCIPLE
12 - B3 PROCEDURE
12 - B3. 1 Registered air gaps
12 - B3. 2 Registered break tanks
12 - B4 TEST REPORT
14 - APPENDIX C - TYPICAL TEST KIT ARRANGEMENT FOR BACKFLOW PREVENTION DEVICES
15 - APPENDIX D - FIELD TESTING OF PRESSURE- TYPE VACUUM- BREAKER BACKFLOW PREVENTION DEVICES
15 - D1 SCOPE
15 - D2 APPARATUS
15 - D3 PROCEDURE
16 - D4 TEST REPORT
16 - D5 CRITERIA FOR ACCEPTANCE
17 - APPENDIX E - FIELD TESTING OF REDUCED-PRESSURE-ZONE BACKFLOW PREVENTION DEVICES
17 - E1 SCOPE
17 - E2 APPARATUS
17 - E3 PROCEDURE
18 - E4 TEST REPORT
18 - E5 CRITERIA FOR ACCEPTANCE
20 - APPENDIX F - FIELD TESTING OF DOUBLE CHECK- VALVE BACKFLOW PREVENTION DEVICES
20 - F1 SCOPE
20 - F2 APPARATUS
20 - F3 PROCEDURE
21 - F4 TEST REPORT
21 - F5 CRITERIA FOR ACCEPTANCE
22 - APPENDIX G - TYPICAL FORMAT FOR REPORTING TEST RESULTS FOR REGISTERED AIR GAPS AND REGISTERED BREAK TANKS
23 - APPENDIX H - TYPICAL FORMAT FOR REPORTING INSPECTION AND MAINTENANCE FOR BACKFLOW PREVENTION DEVICES
24 - APPENDIX I - DIFFERENTIAL GAUGE CALIBRATION CHECKS
24 - I1 SCOPE
24 - I2 PRINCIPLE
24 - I3 METHOD FOR DIFFERENTIAL GAUGE CALIBRATION CHECK- WATER COLUMN
24 - I3. 1 Apparatus
24 - I3. 2 Procedure
24 - I4 METHOD FOR DIFFERENTIAL GAUGE CALIBRATION CHECK- MERCURY MANOMETER
24 - I4. 1 Apparatus
24 - I4. 2 Procedure

Specifies requirements for field testing and maintenance of backflow prevention devices specified in AS 2845.1 and includes requirements for air gaps and break tanks as registered by the relevant authorities.

This Standard specifies requirements for field testing and maintenance of backflow prevention devices specified in AS 2845.1, air gaps and break tanks as specified in the draft Standard on air gaps and break tanks* and as registered by the relevant authorities.

First published as AS 2845.3-1993.