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                            AS 2118.1-1999 AUTOMATIC FIRE SPRINKLER SYSTEMS - GENERAL REQUIREMENTS
	PREFACE
	CONTENTS
	FOREWORD
	SECTION 1 SCOPE AND GENERAL
		1.1 SCOPE
		1.2 OBJECTIVE
		1.3 APPLICATION
		1.4 NEW DESIGNS AND INNOVATIONS
		1.5 REFERENCED DOCUMENTS
		1.6 DEFINITIONS
			1.6.1 Alarm signalling equipment (ASE)
			1.6.2 Alarm valve
			1.6.3 Assumed area of operation
			1.6.4 Building owner
			1.6.5 Compartment
			1.6.6 Effective height
			1.6.7 Encapsulated
			1.6.8 Fire and draught stop
			1.6.9 Installation
			1.6.10 Listed
			1.6.11 Monitoring service
			1.6.12 Multiple controls
			1.6.13 Net positive suction head (NPSH)
			1.6.14 Open joists and exposed common rafters
			1.6.15 Post or box pallet
			1.6.16 Relevant authority
			1.6.17 Special sprinkler
			1.6.18 Special sprinkler system
			1.6.19 Sprayers
			1.6.20 Sprinkler-protected area
			1.6.21 Sprinkler-protected building
			1.6.22 Sprinkler system
			1.6.23 Standard sprinkler system
			1.6.24 Standard sprinkler
	SECTION 2 CLASSIFICATION OF SPRINKLER SYSTEMS AND DESIGN DATA
		2.1 CLASSIFICATION OF SYSTEMS
		2.2 CLASSIFICATION OF OCCUPANCIES
		2.3 TYPES OF SPRINKLER SYSTEMS
			2.3.1 General
			2.3.2 Standard sprinkler system
			2.3.3 Special sprinkler systems
		2.4 DESIGN DATA
	SECTION 3 INSTALLATION
		3.1 SPRINKLER-PROTECTED BUILDINGS
			3.1.1 Extent of sprinkler protection
			3.1.2 Protection against exposure hazards
			3.1.3 Permitted exceptions
		3.2 TRANSMISSION OF ALARM SIGNAL TO FIRE BRIGADE
		3.3 LOCAL ALARM
		3.4 SYSTEM COMPONENT FAULT MONITORING
			3.4.1 General
			3.4.2 Monitoring devices
			3.4.3 Systems to be monitored
			3.4.4 Components to be monitored
			3.4.5 Installation
	SECTION 4 WATER SUPPLIES
		4.1 GENERAL
			4.1.1 Requirements
			4.1.2 Additives
		4.2 ACCEPTABLE SOURCES OF SUPPLY
		4.3 WATER SUPPLY GRADES
			4.3.1 General
			4.3.2 Grade 3 water supplies
			4.3.3 Grade 2 water supplies
			4.3.4 Grade 1 water supplies
		4.4 CONNECTIONS TO OTHER SERVICES
			4.4.1 General
			4.4.2 Fire hose reel connections
			4.4.3 Fire brigade booster connection
		4.5 PRESSURE AND FLOW REQUIREMENTS
		4.6 PRESSURE CONSIDERATIONS
		4.7 MINIMUM CAPACITY OF STORED WATER SUPPLIES
		4.8 PUMP SUCTION TANKS
			4.8.1 General
			4.8.2 Effective capacity
			4.8.3 Vortex inhibitor
			4.8.4 Supply from inexhaustible source
		4.9 PRIVATE WATER SUPPLIES
			4.9.1 General
			4.9.2 Elevated private reservoirs
			4.9.3 Gravity tanks
		4.10 TOWN MAINS
			4.10.1 Direct supply from town mains
			4.10.2 Pump drawing from town mains
		4.11 PUMP INSTALLATIONS
			4.11.1 General requirements
			4.11.2 Pump operating conditions
			4.11.3 Suction piping
			4.11.4 Performance requirements for pumps
		4.12 PUMPSETS
		4.13 PRESSURE TANKS
			4.13.1 General
			4.13.2 Special requirements
		4.14 PROVING OF WATER SUPPLIES
	SECTION 5 SPACING AND LOCATION OF SPRINKLERS
		5.1 STANDARD SPACING
		5.2 STAGGERED SPACING
		5.3 MINIMUM DISTANCE BETWEEN SPRINKLERS
		5.4 LOCATION OF SPRINKLERS (OTHER THAN SIDEWALL SPRINKLERS)
			5.4.1 General
			5.4.2 Walls and partitions
			5.4.3 Ceilings, roofs and underside of stairs
			5.4.4 Beams and joists
			5.4.5 Columns
			5.4.6 Girders
			5.4.7 Roof trusses
			5.4.8 Clear space below sprinklers
		5.5 SPACING AND LOCATION OF SIDEWALL SPRINKLERS
			5.5.1 General
			5.5.2 Maximum spacing of sidewall sprinklers
			5.5.3 Distance between rows of sprinklers
		5.6 LOCATIONS OR CONDITIONS INVOLVING SPECIAL CONSIDERATION (SUPPLEMENTARY PROTECTION)
			5.6.1 Concealed spaces
			5.6.2 Spaces under ground floors
			5.6.3 Hydraulic design-Concealed spaces
			5.6.4 Machinery pits and production lines
			5.6.5 Hoists, lift shafts, building services shafts and enclosed chutes
			5.6.6 Elevators, rope or strap races, exhaust ducts, gearing boxes and dust receivers
			5.6.7 Corn, rice, provender and oil mills
			5.6.8 Bins and silos
			5.6.9 Escalators
			5.6.10 Canopies
			5.6.11 Roof overhang
			5.6.12 Exterior docks and platforms
			5.6.13 Covered balconies
			5.6.14 Enclosed paint lines, drying ovens, drying enclosures
			5.6.15 Spray booths
			5.6.16 Oil and flammable liquid hazards
			5.6.17 Commercial type cooking equipment and associated ventilation systems
			5.6.18 Air-handling plant
			5.6.19 Computer and other electronic equipment areas
		5.7 OBSTRUCTIONS BELOW SPRINKLERS
			5.7.1 General
			5.7.2 Overhead platforms
			5.7.3 Ducts and bulkheads
			5.7.4 Suspended ceilings
			5.7.5 Suspended open grid ceilings
			5.7.6 Hoods over papermaking machines
			5.7.7 Storage racks
			5.7.8 Storage fixtures of solid and slatted shelved construction
		5.8 FILM AND TELEVISION PRODUCTION STUDIOS
			5.8.1 Overhead platforms and walkways
			5.8.2 Concealed spaces and cavities
		5.9 THEATRES AND MUSIC HALLS (PROTECTION ON THE STAGE SIDE OF THE PROSCENIUM WALL)
		5.10 COLD STORAGE WAREHOUSE
			5.10.1 General
			5.10.2 Piping within the cold chamber
	SECTION 6 SPRINKLERS, SPRAYERS AND MULTIPLE CONTROLS
		6.1 GENERAL
		6.2 TYPES OF SPRINKLERS, SPRAYERS AND MULTIPLE CONTROLS
			6.2.1 Standard sprinklers
			6.2.2 Special sprinklers
			6.2.3 Sprayers
			6.2.4 Multiple controls
		6.3 STANDARD SPRINKLE K FACTORS, ORIFICE AND THREAD SIZES
		6.4 APPLICATION OF SPRINKLER TYPES
		6.5 TEMPERATURE RATINGS
		6.6 COLOUR CODING
		6.7 STOCK OF REPLACEMENT SPRINKLERS
			6.7.1 Special sprinklers
		6.8 ANTI-CORROSION TREATMENT OF SPRINKLERS
		6.9 SPRINKLER GUARDS
		6.10 ESCUTCHEON PLATE ASSEMBLIES
		6.11 PROTECTION AGAINST FROST
	SECTION 7 PIPING
		7.1 PIPE AND PIPE FITTINGS
		7.2 HYDRAULIC TEST PRESSURE
		7.3 PIPING IN NON-SPRINKLER-PROTECTED BUILDINGS
		7.4 HAZARDOUS PROCESSES AND EXPLOSION HAZARD - SPECIAL PRECAUTIONS CONCERNING PIPING AND VALVES
		7.5 SLOPE OF PIPES FOR DRAINAGE
		7.6 LOW LEVEL DRAINAGE
		7.7 PIPE SIZES
		7.8 ORIFICE PLATES
		7.9 SUPPORT OF SPRINKLER PIPING
	SECTION 8 VALVES AND ANCILLARY EQUIPMENT
		8.1 CONTROL ASSEMBLIES
		8.2 STOP VALVES
			8.2.1 General
			8.2.2 Main stop valves
			8.2.3 Stop valves controlling water supplies
			8.2.4 Subsidiary stop valves
		8.3 BLOCK PLAN
		8.4 LOCATION PLATE
		8.5 EMERGENCY INSTRUCTIONS
		8.6 NON-RETURN (BACK PRESSURE) VALVES
		8.7 ALARM VALVES
			8.7.1 Alarm valves (wet)
			8.7.2 Alarm valves (dry)
			8.7.3 Composite alarm valves
			8.7.4 Identification of alarm valves and alarm gongs
			8.7.5 Accelerators or exhausters for alarm valves (dry system)
		8.8 PRESSURE-REDUCING VALVES
		8.9 DELUGE AND PRE-ACTION VALVES
			8.9.1 Deluge valves
			8.9.2 Pre-action valves
		8.10 ALARM DEVICES
			8.10.1 General
			8.10.2 Prevention of false alarms
			8.10.3 Local water motor alarms
			8.10.4 Fire alarm signal
			8.10.5 Pressure switches
			8.10.6 Testing of alarm devices
		8.11 REMOTE TEST VALVES
		8.12 PRESSURE GAUGES
	SECTION 9 LIGHT HAZARD CLASS SYSTEMS
		9.1 SCOPE
		9.2 DESIGN DATA
		9.3 WATER SUPPLY
			9.3.1 Pressure and flow requirements
			9.3.2 Water storage capacity
			9.3.3 Additional storage capacity
			9.3.4 Pump suction tanks
			9.3.5 Pressure tanks
			9.3.6 Pumpsets
			9.3.7 Proving of water supplies
		9.4 SPRINKLERS
			9.4.1 Size and type
			9.4.2 Maximum area coverage per sprinkler
			9.4.3 Reduced coverage
			9.4.4 Maximum spacing
			9.4.5 Special sprinklers
		9.5 PIPING
			9.5.1 Pipe types
			9.5.2 Pipe sizes
			9.5.3 Hydraulic calculations
			9.5.4 Concealed spaces
			9.5.5 System drainage
	SECTION 10 ORDINARY HAZARD CLASS SYSTEMS
		10.1 DESIGN DATA
		10.2 WATER SUPPLIES
			10.2.1 Pressure and flow requirements
			10.2.2 Minimum capacity of water supplies
			10.2.3 Pumps
			10.2.4 Proving of water supplies
		10.3 SPACING OF STANDARD SPRINKLERS
			10.3.1 Maximum area coverage per sprinkler
			10.3.2 Maximum distance between sprinklers on range pipes and between adjacent rows of sprinklers
			10.3.3 Maximum distance from walls and partitions (see also Clauses 5.4.2 and 5.5)
		10.4 SYSTEM COMPONENTS
			10.4.1 Sprinklers
			10.4.2 Piping
		10.5 SYSTEM DRAINAGE
	SECTION 11 HIGH HAZARD CLASS SYSTEMS
		11.1 DESIGN DATA
			11.1.1 General
			11.1.2 Process risks
			11.1.3 High piled storage risks
			11.1.4 Type of system
		11.2 WATER SUPPLIES
			11.2.1 Pressure and flow requirements
			11.2.2 Minimum capacity of water supplies
			11.2.3 Pumps
			11.2.4 Proving of water supplies
		11.3 SPACING OF STANDARD SPRINKLERS
			11.3.1 Maximum area coverage per sprinkler
			11.3.2 Maximum distance between sprinklers on range pipes and between adjacent rows of sprinklers
			11.3.3 Maximum distance from walls and partitions
		11.4 SYSTEM COMPONENTS
			11.4.1 Sprinklers
			11.4.2 Piping
		11.5 SYSTEM DRAINAGE
	SECTION 12 FULL HYDRAULIC CALCULATION OF SPRINKLER SYSTEMS
		12.1 GENERAL
		12.2 DESIGN REQUIREMENTS FOR DENSITY OF DISCHARGE
		12.3 ASSUMED AREA OF OPERATION
		12.4 SPRINKLERS IN OPERATION
		12.5 POSITION OF ASSUMED AREA OF OPERATION
			12.5.1 Hydraulically most unfavourable area of operation
			12.5.2 Hydraulically most favourable area of operation
		12.6 SHAPE OF ASSUMED AREA OF OPERATION
			12.6.1 Hydraulically most unfavourable area of operation
			12.6.2 Hydraulically most favourable area of operation
		12.7 WATER SUPPLIES
		12.8 PUMPSETS
			12.8.1 General
			12.8.2 Maximum flow rates
		12.9 CALCULATION OF PRESSURE LOSS IN PIPES
		12.10 PRESSURE LOSSES
			12.10.1 Fittings and valves
			12.10.2 Dry pendent (or upright) sprinklers
		12.11 ACCURACY OF CALCULATIONS
		12.12 MINIMUM SPRINKLER DISCHARGE PRESSURE
		12.13 MINIMUM PIPE SIZES
		12.14 VELOCITY LIMITATION
		12.15 VELOCITY PRESSURE
		12.16 IDENTIFICATION OF FULLY HYDRAULICALLY CALCULATED SYSTEMS
	APPENDIX A -OCCUPANCY CLASSIFICATIONS
		A1 INTRODUCTION
		A2 LIGHT HAZARD OCCUPANCIES
		A3 ORDINARY HAZARD OCCUPANCIES
			A3.1 Ordinary Hazard 1 occupancies (OH 1)
			A3.2 Ordinary Hazard 2 occupancies (OH 2)
			A3.3 Ordinary Hazard 3 occupancies (OH 3)
			A3.4 Ordinary Hazard Special (OH Special) occupancies
		A4 HIGH HAZARD OCCUPANCIES
			A4.1 High Hazard-Process Risks
			A4.2 High Hazard-High-piled Storage Risks
			A4.3 Storage risks requiring special consideration
	APPENDIX B - REFERENCED DOCUMENTS
	APPENDIX C - ORIFICE PLATES
		C1 SCOPE
		C2 REQUIREMENTS
		C3 NOTES ON THE USE OF TABLES C1 AND C2
	APPENDIX D - PIPING INTERPRETATIONS
	INDEX
                        
Document Text Contents
Page 1

AS 2118.1—1999
(Incorporating Amendment No. 1)

Australian Standard™

Automatic fire sprinkler systems

Part 1: General requirements

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Page 85

AS 2118.1—1999

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83

7.6 LOW LEVEL DRAINAGE

In basements and other areas where sprinkler piping is below the installation drain valves
and in other trapped sections in the system, auxiliary drain valves of the following
minimum sizes shall be provided:

(a) For pipes up to 50 mm in diameter .................................................................20 mm.

(b) For 65 mm diameter pipes .............................................................................25 mm.

(c) For pipes larger than 65 mm in diameter ........................................................32 mm.

7.7 PIPE SIZES

Pipe size shall be determined either by full hydraulic calculation (see Section 12), or partly
by pre-calculated pipe size tables and partly by hydraulic calculations in accordance with
the requirements for the class of hazard (see Clauses 9.5, 10.4 and 11.4).

7.8 ORIFICE PLATES

Orifice plates fitted to assist in hydraulically balancing a High Hazard class system or to
meet pump characteristic curves shall have an orifice diameter of not less than 50% of the
diameter of the pipe into which the plate is to be fitted and shall comply with the
requirements of Appendix C. Such orifice plates shall be permitted only in pipes of 50 mm
in diameter or larger.

7.9 SUPPORT OF SPRINKLER PIPING

When a pipe support system is being designed for a standard fire sprinkler system,
consideration shall be given to the correct location of pipe supports and to—

(a) the stresses and loads which may be imposed on the support system from all external
causes including differential movement of the building structure and all internal
causes including pressure reactions;

(b) the transmission of vibration from the building to the piping and from the piping to
the building; and

(c) the effect a corrosive atmosphere may have on the materials used.

Fire sprinkler piping support systems shall comply with the requirements specified in
AS 2118.9.

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AS 2118.1—1999

© Standards Australia www.standards.com.au

84

S E C T I O N 8 V A L V E S A N D A N C I L L A R Y
E Q U I P M E N T

8.1 CONTROL ASSEMBLIES

Each installation shall be provided with a control assembly and ancillary equipment
comprising the following:

(a) A main stop valve (see Clause 8.2.2).

(b) A valve, comprising either:

(i) an alarm valve (wet) (see Clause 8.7.1) or an alarm valve (dry)
(see Clause 8.7.2); or

(ii) a composite alarm valve suitable for either wet or dry systems (see Clause 8.7.3).

(c) A water motor alarm and gong (see Clauses 8.10.3 and 3.3).

(d) Direct brigade alarm equipment, where facilities for such are available
(see Clause 3.2).

(e) A plan of the risk, i.e. block plan (see Clause 8.3).

(f) Emergency instructions (see Clause 8.5).

(g) A location plate (see Clause 8.4).

(h) A notice identifying the installation and the area served by the installation.
NOTE: Installation control assemblies and ancillary equipment should be placed near a main
entrance to the building, in such a location as to be readily visible and accessible to authorized
persons.

8.2 STOP VALVES

8.2.1 General

All stop valves (except those fitted by the water supply authorities on the branches from a
town main) shall comply with the requirements of AS 4118.1.6.

All valves shall be permanently identified to show their function and normal operating
position. All valves on the water supply side of the sprinkler alarm valves shall be subject
to the requirements of the water supply authority.

8.2.2 Main stop valves

Water supplies to each sprinkler installation shall pass through a main stop valve. Before
passing through the main stop valves, water supplies shall be combined. The main stop
valve shall be secured open by a padlocked or riveted strap and shall be adequately
protected from the effect of frost.

NOTE: Provision should be made for closure of the main stop valve to give a visible and audible
alarm at a place under constant surveillance (see Clause 3.4).

8.2.3 Stop valves controlling water supplies

All stop valves controlling water supplies, except those under control of the water supply
authority, shall be secured open by a padlocked chain or a padlocked or riveted strap. In the
elevated private reservoirs and gravity tanks, the stop valve shall be fixed close to the
non-return valve and on the reservoir or tank side thereof.

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Page 169

PO Box 1055 Strathfield NSW 2135

Administration Phone (02) 9746 4700 Fax (02) 9746 8450 Email [email protected]

Customer Service Phone 1300 65 46 46 Fax 1300 65 49 49 Email [email protected]

Internet www.standards.com.au

ISBN 0 7337 3021 3 Printed in AustraliaA
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