AS 4214.1-1995

1 - AS 4214.1-1995 GASEOUS FIRE EXTINGUISHING SYSTEMS - GENERAL REQUIREMENTS
4 - PREFACE
5 - CONTENTS
7 - FOREWORD
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 APPLICATION
8 - 1.3 NEW DESIGNS AND INNOVATIONS
8 - 1.4 REFERENCED DOCUMENTS
9 - 1.5 DEFINITIONS
9 - 1.5.1 Appropriate authority
9 - 1.5.2 Approved and approval
9 - 1.5.3 Automatic
9 - 1.5.4 Containers
9 - 1.5.5 Container discharge valve
9 - 1.5.6 Control device
9 - 1.5.7 Converted systems
9 - 1.5.8 Design concentration
9 - 1.5.9 Directional valve
9 - 1.5.10 Discharge inhibit switch
10 - 1.5.11 Distribution system
10 - 1.5.12 Extinguishant
10 - 1.5.13 Flame extinguishing concentration
10 - 1.5.14 Hazardous concentrations
10 - 1.5.15 Holding time
10 - 1.5.16 Inerting
10 - 1.5.17 Local application system
10 - 1.5.18 Lock-off valve
10 - 1.5.19 Lowest observed adverse effect level (LOAEL)
10 - 1.5.20 Manual
10 - 1.5.21 Monitoring
10 - 1.5.22 No observed adverse effect level (NOAEL)
10 - 1.5.23 Nominal size
10 - 1.5.24 Normally occupied area
10 - 1.5.25 Normally unoccupied area
10 - 1.5.26 Operating device
10 - 1.5.27 Primary release
10 - 1.5.28 Release
11 - 1.5.29 Shall
11 - 1.5.30 Should
11 - 1.5.31 Secondary (slave) release
11 - 1.5.32 Total flooding system
11 - 1.5.33 Listing authority
11 - 1.6 INTERPRETATION OF SPECIFIED LIMITING VALUES
11 - 1.7 USES FOR AND LIMITATIONS OF GASEOUS SYSTEMS
11 - 1.7.1 General
11 - 1.7.2 Uses for gaseous systems
11 - 1.7.3 Limitations of gaseous systems
11 - 1.7.4 Protection of multiple enclosures
13 - SECTION 2 SAFETY REQUIREMENTS
13 - 2.1 SAFETY OF PERSONNEL
13 - 2.2 SAFETY PRECAUTIONS
14 - 2.3 PROTECTION OF OCCUPANTS
14 - 2.4 SAFETY REQUIREMENTS
14 - 2.4.1 General
14 - 2.4.2 Total flooding systems
15 - 2.4.3 Local applications systems
15 - 2.4.4 Installer's responsibility
16 - 2.4.5 Owner's responsibility
16 - 2.4.6 Electrostatic discharge
16 - 2.4.7 Other potential hazards
18 - SECTION 3 SYSTEM DESIGN
18 - 3.1 SPECIFICATIONS, PLANS AND APPROVALS
18 - 3.1.1 Specifications
18 - 3.1.2 Plans
18 - 3.1.3 System calculation approval
18 - 3.1.4 Approval of plans
18 - 3.1.5 Performance and classification requirements
18 - 3.2 APPROVAL OF INSTALLATIONS
18 - 3.3 APPROVAL OF COMPONENTS
19 - 3.4 CONCENTRATION REQUIREMENTS
19 - 3.5 APPLICATION RATE AND DURATION OF DISCHARGE
19 - 3.6 EXTENDED APPLICATION
19 - 3.7 CONCENTRATION, DISTRIBUTION AND HOLDING
19 - 3.8 FLAMMABLE LIQUIDS AND GASES
19 - 3.8.1 Concentration
19 - 3.8.2 Requirements for flame extinguishment
20 - 3.8.3 Flame extinguishing concentrations
20 - 3.8.4 Inerting
20 - 3.9 DEEP-SEATED FIRES
20 - 3.10 TOTAL FLOODING QUANTITY REQUIREMENTS
21 - 3.11 SPECIAL CONDITIONS
21 - 3.12 LOCAL APPLICATION SYSTEMS
21 - 3.13 COMPATIBILITY
21 - 3.15 DEEMED TO SATISFY
22 - SECTION 4 PROTECTED ENCLOSURE REQUIREMENTS
22 - 4.1 UNCLOSABLE OPENINGS
22 - 4.2 VENTILATION AND SERVICES
22 - 4.3 PRESSURE RELIEF VENTING
22 - 4.4 ENCLOSURE STRENGTH AND ALLOWABLE PRESSURE
24 - SECTION 5 SUPPLY
24 - 5.1 QUALITY
24 - 5.2 STORAGE CONTAINERS
24 - 5.3 VALVES
24 - 5.3.1 General
24 - 5.3.2 Isolating valves
24 - 5.3.3 Lock-off valves
24 - 5.3.4 Container discharge valves
24 - 5.4 STORAGE CONTAINER ARRANGEMENT
26 - SECTION 6 DISTRIBUTION SYSTEM
26 - 6.1 GENERAL
26 - 6.2 PIPEWORK
26 - 6.3 INSTALLATION OF PIPEWORK
26 - 6.4 QUALITY CONTROL AND QUALITY ASSURANCE OF PIPEWORK
26 - 6.5 DIRT TRAPS
26 - 6.6 DRAIN TRAPS
26 - 6.7 SAFETY DEVICES
26 - 6.7.1 Pressure-relief device
27 - 6.7.2 Automatic venting
27 - 6.7.3 Safety of personnel
27 - 6.8 NOZZLES
27 - 6.8.1 Nozzle choice and location
28 - 6.8.2 Ceiling tiles
29 - SECTION 7 CONTROL SYSTEMS
29 - 7.1 GENERAL
29 - 7.2 ELECTRICAL CONTROL
29 - 7.3 OPERATING DEVICES
29 - 7.4 CONTROL AND INDICATING EQUIPMENT
30 - 7.5 DISCHARGE CONTROLS
30 - 7.6 LOCAL CONTROL STATION
31 - 7.7 AUDIBLE ALARMS AND VISIBLE WARNING DEVICES
31 - 7.8 MANUAL MECHANICAL RELEASE
31 - 7.9 PNEUMATIC
31 - 7.9.1 General
31 - 7.9.2 Energy source
31 - 7.9.3 Reliability of energy source
31 - 7.10 MECHANICAL
31 - 7.11 TIME DELAY FUNCTION
32 - SECTION 8 MARKING
32 - 8.1 CONTROL AND INDICATING EQUIPMENT (CIE)
32 - 8.2 VISUAL WARNING DEVICES
32 - 8.3 NUMBER OF CONTAINERS AND QUANTITY MARKING
32 - 8.4 IDENTIFICATION AND MARKING OF CONTAINERS
32 - 8.4.1 Identification
32 - 8.4.2 Permanent markings
32 - 8.4.3 Marking
33 - 8.5 LABELLING OF INDICATORS AND CONTROLS
33 - 8.6 IDENTIFICATION OF DISCHARGE NOZZLES
37 - SECTION 9 COMMISSIONING AND ACCEPTANCE TESTING
37 - 9.1 CRITERIA FOR ACCEPTANCE
37 - 9.2 FAILURE
38 - APPENDIX A - COMMISSIONING CHECK LIST

Sets out requirements for the design, installation and commissioning of both total flooding and local application types, and applies to single supply or distributed systems. Specific requirements for individual gases are given in other parts of this Standard.

This Standard sets out requirements for design, installation and commissioning of gaseous fire extinguishing systems of both total flooding and local application types. It applies to single supply or distributed supply systems.Specific requirements for individual extinguishing gases are given in other Parts of the Standard. The extinguishing gas shall be referred to as the gas or extinguishant in this Standard.

First published as AS 4214.1-1995.