Standard
UPDATE AVAILABLE
AS 4587-1999
[Superseded]Water mist fire protection systems — System design, installation and commissioning
Sets out requirements for the protection of life and property from the consequences of fire, through standardization of design, installation and commissioning of water-based fire protection systems that use water mist as the extinguishing agent.
Published: 05/08/1999
Pages: 41
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
FOREWORD
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 OBJECTIVES
1.3 APPLICATION
1.4 NEW DESIGNS AND INNOVATIONS
1.5 APPROVAL AND LISTINGS
1.6 REFERENCED DOCUMENTS
1.7 DEFINITIONS
1.8 INTERPRETATION OF SPECIFIED LIMITING VALUES
1.9 USES AND LIMITATIONS OF WATER MIST SYSTEMS
1.9.1 Uses
1.9.2 Limitations
1.9.3 Environmental factors
2 SAFETY REQUIREMENTS
2.1 SAFETY OF PERSONNEL
2.2 SAFETY REQUIREMENTS
2.3 WATER QUALITY
3 SYSTEM DESIGN
3.1 GENERAL
3.2 LISTING TESTS
3.3 SYSTEM TYPES
3.3.1 General
3.3.2 Pre-engineered systems
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3.10
3.3.11
3.4 ENCLOSURE VARIABLES
3.5 FIRE LOCATION
3.6 OBSTRUCTION AND SHIELDING
3.7 VENTILATION
3.7.1 General
3.7.2 Natural ventilation
3.7.3 Forced ventilation
3.8 HAZARD ANALYSIS
3.9 DOCUMENTATION
3.9.1 General
3.9.2 System calculations
3.9.3 Design approval
3.10 SUPPLY
3.11 COMPONENTS
3.12 EXTINGUISHING AGENT
3.13 ADDITIVES
3.14 CONTROL SYSTEMS
3.15 MARINE SYSTEMS
3.16 MARKING
3.17 ACCEPTANCE OF INSTALLATION
4 PROTECTED HAZARD REQUIREMENTS
4.1 UNCLOSABLE OPENINGS
4.2 SERVICES
4.3 PRESSURE RELIEF VENTING
5 WATER SUPPLY
5.1 WATER SUPPLIES
5.1.1 General
5.1.2 Unlimited water supply
5.1.3 Limited water supply
5.1.4 Uniform cycling systems
5.2 PRESSURIZED STORAGE CONTAINER ARRANGEMENT
5.3 ATOMIZING GAS FOR TWIN FLUID SYSTEMS
6 COMPONENTS AND INSTALLATION
6.1 GENERAL
6.2 VALVES
6.2.1 General
6.2.2 Isolating valves
6.2.3 Valve monitoring
6.2.4 Valve protection
6.3 PIPEWORK
6.3.1 Piping
6.3.2 Flexible connections
6.3.3 Pipe or tube bending
6.3.4 Pipe threads
6.3.5 Fittings
6.3.6 Flanges
6.3.7 Welding and brazing
6.4 INSTALLATION OF PIPEWORK
6.4.1 Preparation of pipe
6.4.2 Pipe supports
6.4.3 Distance between supports
6.5 DRAIN VALVES
6.6 DIRT TRAPS
6.7 DISCHARGE NOZZLES
6.7.1 General
6.7.2 Corrosion protection
6.7.3 Nozzle clogging
6.7.4 Spare nozzles
6.8 STRAINERS
6.9 COMPRESSED GAS PRESSURE REGULATING VALVE (PRV)
6.10 CHECK VALVES
6.11 BACK FLOW PREVENTION OR AIR BREAK TANKS
6.12 PRESSURE INDICATION
6.12.1 General
6.12.2 Pressure gauges
6.13 STORAGE CONTAINERS
6.13.1 Gas cylinders
6.13.2 Pressurized containers
6.13.3 Pump suction tanks
6.13.4 Integral mounting brackets
7 CONTROL SYSTEMS
7.1 GENERAL
7.2 ELECTRICAL CONTROL
7.3 OPERATING DEVICES
7.4 CONTROL AND INDICATING EQUIPMENT
7.5 AUDIBLE ALARMS AND VISIBLE WARNING DEVICES
7.6 MECHANICAL RELEASE
7.6.1 Automatic
7.6.2 Manual
7.7 PNEUMATIC RELEASE
7.7.1 General
7.7.2 Energy source
7.7.3 Reliability of energy source
7.8 TIME DELAY FUNCTION
8 MARINE
8.1 GENERAL
8.2 SYSTEM DESIGN
8.3 PUMP CAPACITY
8.4 PUMP POWER SUPPLY
8.5 PRESSURIZED STORAGE CONTAINERS
8.6 AUDIBLE AND VISUAL INDICATIONS
8.7 WATER SUPPLY
8.8 STABILITY
9 MARKING
9.1 CONTROL AND INDICATING EQUIPMENT (CIE)
9.2 WARNING AND INSTRUCTION SIGNS
9.3 IDENTIFICATION AND MARKING OF CONTAINERS
9.3.1 Identification
9.3.2 Permanent markings
9.3.3 Markings
9.4 PRESSURE GAUGES
9.5 LABELLING OF INDICATORS AND CONTROLS
10 COMMISSIONING AND ACCEPTANCE TESTING
10.1 CRITERIA FOR ACCEPTANCE
10.2 FAILURE
10.3 APPROVAL OF WATER MIST SYSTEMS
10.4 LEAK TESTS
10.5 PNEUMATIC PRESSURE TESTING WARNING
11 HYDRAULIC CALCULATIONS
11.1 GENERAL
11.2 CALCULATION METHODS
11.2.1 General
11.2.2 Hydraulic junction points
11.3 HAZEN-WILLIAMS
11.3.1 Formula
11.3.2 Pressure loss in fittings
11.3.3 Equivalent pipe lengths of values and fittings
11.3.4 Specific friction loss values
11.4 DARCY-WEISBACH
11.4.1 Darcy-Weisbach equations
11.4.2 Friction factor
11.5 PNEUMATIC CALCULATION PROCEDURES FOR ATOMIZING MEDIA IN TWIN FLUID SYSTEMS
11.5.1 Maximum and minimum pneumatic pressure
11.5.2 Basis of calculation
11.5.3 Determining water pressure vs air pressure
11.5.4 Required pipe size calculations
11.5.5 Calculation results
12 ADDITIVES
12.1 GENERAL
12.2 LIMITATIONS
12.3 SAFETY
APPENDIX A
Cited references in this standard
[Current]
Portable fire extinguishers — Classification, rating and performance testing
AS 4428
Fire control and indication equipment
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