AS 2118.2-1995

1 - AS 2118.2-1995 AUTOMATIC FIRE SPRINKLER SYSTEMS - WALL WETTING SPRINKLERS (DRENCHERS)
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 NEW DESIGNS AND INNOVATIONS
7 - 1.3 INTERPRETATIONS
7 - 1.4 REFERENCED AND RELATED DOCUMENTS
7 - 1.5 DEFINITIONS
7 - 1.5.1 Assumed area of operation (wall wetting sprinkler system)
7 - 1.5.2 External opening
7 - 1.5.3 Fire compartment
7 - 1.5.4 Fire-source feature
8 - 1.5.5 Radiant heat
8 - 1.5.6 Radiant heat flux
8 - 1.5.7 Receiver building
8 - 1.5.8 Source building
8 - 1.5.9 Wall wetting sprinkler open
8 - 1.5.10 Wall wetting sprinkler sealed
8 - 1.5.11 Worst case exposure fire
8 - 1.6 TYPES OF SYSTEMS
8 - 1.6.1 Sealed wall wetting sprinkler systems
8 - 1.6.2 Open wall wetting sprinkler systems
8 - 1.6.3 Wet systems
8 - 1.6.4 Dry systems
9 - SECTION 2 SYSTEM DESIGN
9 - 2.1 GENERAL
9 - 2.2 SEALED WALL WETTING SPRINKLER SYSTEMS
9 - 2.2.1 Design
9 - 2.2.2 Water supply
9 - 2.2.3 Sprinkler orientation for wet type systems
9 - 2.2.4 Dry systems
9 - 2.3 OPEN WALL WETTING SPRINKLER SYSTEMS
9 - 2.4 MAXIMUM NUMBER OF WALL WETTING SPRINKLERS ON SYSTEM
9 - 2.5 MINIMUM OPERATING PRESSURE
10 - 2.6 AREA TO BE PROTECTED
10 - 2.7 SHIELDING OF WALL WETTING SPRINKLERS
11 - 2.8 SPACING OF WALL WETTING SPRINKLERS
11 - 2.9 DISTANCE OF WALL WETTING SPRINKLERS FROM THE PROTECTED SURFACE
11 - 2.10 SEALED WALL WETTING SPRINKLERS
11 - 2.11 OPEN WALL WETTING SPRINKLERS
12 - SECTION 3 WATER SUPPLIES
12 - 3.1 GENERAL
12 - 3.2 PROVING OF WATER SUPPLIES
12 - 3.2.1 Test facilities
12 - 3.2.2 Acceptable source of supply
12 - 3.3 CONNECTIONS TO OTHER SERVICES
12 - 3.4 FIRE BRIGADE BOOSTER CONNECTION
12 - 3.4.1 General
12 - 3.4.2 Location
13 - 3.4.3 Fittings
13 - 3.4.4 Enclosure
13 - 3.5 PRESSURE LIMITATIONS
13 - 3.6 MINIMUM CAPACITY OF RESERVOIRS AND TANKS
13 - 3.7 PRIVATE WATER SUPPLIES
13 - 3.8 TOWN MAINS
13 - 3.8.1 Direct supply from town mains
14 - 3.8.2 Pumps drawing from town mains
15 - SECTION 4 PUMPSET INSTALLATIONS
16 - SECTION 5 SYSTEM COMPONENTS
16 - 5.1 GENERAL
16 - 5.2 INSTALLATION CONTROL ASSEMBLIES
16 - 5.3 EMERGENCY INSTRUCTIONS
16 - 5.4 LOCATION PLATE
17 - SECTION 6 PIPING
18 - APPENDIX A - REFERENCED AND RELATED DOCUMENTS
18 - A1 STANDARDS
18 - A2 RELATED DOCUMENTS
19 - APPENDIX B - A METHOD OF ASSESSING THE AREA REQUIRING PROTECTION
19 - B1 SCOPE
19 - B2 RATIONALE
19 - B3 DEFINING THE FIRE WITHIN THE SOURCE BUILDING
19 - B4 DEFINING THE SOURCE OF RADIANT HEAT
19 - B4.1 General
19 - B4.2 Vertical and horizontal sources
19 - B4.3 Source radiant heat intensity
19 - B4.4 Bounding rectangle
20 - B4.5 Percentage of openings
20 - B4.6 Aspect ratio
20 - B5 THE RECEIVER BUILDING
20 - B5.1 Limiting radiant heat intensity
20 - B5.2 Attenuation factor
20 - B5.3 Limiting distance
20 - B6 ASSUMED VALUES
21 - B7 EXAMPLES
21 - B7.1 Vertical source example
22 - B7.2 Horizontal source example
25 - APPENDIX C - DISCHARGE PERFORMANCE TEST FOR WALL WETTING SPRINKLERS
25 - C1 SCOPE
25 - C2 RATIONALE
25 - C3 APPARATUS
26 - C4 SPECIMEN
27 - C5 PROGRAM OF TEST RUNS
27 - C6 TEST PROCEDURE
27 - C7 CALCULATIONS
28 - C8 TEST REPORT
31 - APPENDIX D - DETERMINATION OF THE AREA OF OPERATION
31 - D1 GENERAL
31 - D2 METHOD
31 - D3 EXAMPLE
33 - APPENDIX E - DETERMINATION OF RADIANT HEAT OPERATION CHARACTERISTICS OF SEALED WALL WETTING SPRINKLERS
33 - E1 SCOPE
33 - E2 PRINCIPLE
33 - E3 METHOD
33 - E4 APPARATUS
33 - E4.1 Radiant panel
33 - E4.2 Pipework
33 - E5 CONDITIONING
33 - E6 PREPARATION
34 - E7 PROCEDURE
34 - E8 CALCULATION
34 - E9 REPORTING OF RESULTS
35 - APPENDIX F - WIRING SYSTEMS RATING
35 - F1 PROTECTION AGAINST EXPOSURE TO FIRE
35 - F2 PROTECTION AGAINST MECHANICAL DAMAGE
36 - F3 PROTECTION AGAINST HOSING WITH WATER

Specifies minimum performance requirements of wall wetting sprinklers.

This Standard specifies minimum requirements for wall wetting sprinkler systems intended to automatically provide external protection to windows, doors, and walls from exposure to fire where the anticipated radiant heat flux from a fire-source feature is 10 kW/m2or greater. It does not apply to manually-operated systems.Appendices provide methods of assessing the area requiring protection and detail a test procedure for assessment of the operating characteristics of wall wetting sprinklers when exposed to radiant heat.

First published as AS 2118.2-1995.