Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Use and limitations
  4.1 General
  4.2 Extinguishants
  4.3 Electrostatic discharge
  4.4 Compatibility with other extinguishants
  4.5 Temperature limitations
5 Safety
  5.1 Hazard to personnel
  5.2 Safety precautions
      5.2.1 General
      5.2.2 For normally unoccupied areas
      5.2.3 For unoccupiable areas
  5.3 Occupiable areas
  5.4 Electrical hazards
  5.5 Electrical earthing
  5.6 Electrostatic discharge
6 System design
  6.1 General
  6.2 Extinguishant supply
      6.2.1 Quantity
      6.2.2 Quality
      6.2.3 Container arrangement
      6.2.4 Storage containers
  6.3 Distribution
      6.3.1 General
      6.3.2 Piping
      6.3.3 Fittings
      6.3.4 Pipe and valve supports
      6.3.5 Valves
      6.3.6 Nozzles
      6.3.7 Pressure reducing orifice assembly
  6.4 Detection, actuation and control systems
      6.4.1 General
      6.4.2 Automatic detection
      6.4.3 Operating devices
      6.4.4 Control equipment
      6.4.5 Operating alarms and indicators
      6.4.6 Stop devices
7 Extinguishant
  7.1 General
  7.2 Specifications, plans and approvals
      7.2.1 Specifications
      7.2.2 Working documents
  7.3 System flow calculations
      7.3.1 General
      7.3.2 Balanced and unbalanced system
      7.3.3 Friction losses
      7.3.4 Pressure drop
      7.3.5 Valves and fittings
      7.3.6 Piping length
      7.3.7 Drawings
      7.3.8 Liquefied gases - Specific requirements
  7.4 Enclosures
  7.5 Extinguishant concentration requirements
      7.5.1 Flame extinguishment
  7.6 Total flooding quantity
      7.6.1 General
      7.6.2 Liquefied gases
      7.6.3 Non-liquefied gas
  7.7 Altitude adjustment
  7.8 Duration of protection
  7.9 System performance
      7.9.1 Discharge time
      7.9.2 Extended discharge
8 Commissioning and acceptance
  8.1 General
  8.2 Tests
      8.2.1 General
      8.2.2 Enclosure check
      8.2.3 Review of mechanical components
      8.2.4 Review of enclosure integrity
      8.2.5 Review of electrical components
      8.2.6 Preliminary functional tests
      8.2.7 System functional operational test
      8.2.8 Remote monitoring operations (if applicable)
      8.2.9 Control panel primary power source
      8.2.10 Completion of functional tests
  8.3 Completion certificate and documentation
9 Inspection, maintenance, testing and training
  9.1 General
  9.2 Inspection
      9.2.1 General
      9.2.2 Container
      9.2.3 Hose
      9.2.4 Enclosures
  9.3 Maintenance
      9.3.1 General
      9.3.2 User's programme of inspection
      9.3.3 Service schedule
  9.4 Training
Annex A (normative) Working documents
      A.1 General
      A.2 Working documents
      A.3 Specific details
          A.3.1 Pre-engineered systems
          A.3.2 Engineered systems
Annex B (normative) Determination of flame-extinguishing
        concentration of gaseous extinguishants by the cup
        burner method
      B.1 General
      B.2 Principle
      B.3 Requirements for apparatus
          B.3.1 General
          B.3.2 Cup
          B.3.3 Chimney
          B.3.4 Diffuser
          B.3.5 Fuel supply
          B.3.6 Manifold
          B.3.7 Air supply
          B.3.8 Extinguishant supply
          B.3.9 Delivery system
      B.4 Requirements for materials
          B.4.1 Air
          B.4.2 Fuel
          B.4.3 Extinguishant
      B.5 Procedure for flammable liquids
      B.6 Procedure for flammable gases
      B.7 Extinguishant extinguishing concentration
          B.7.1 Preferred method
          B.7.2 Alternative method
      B.8 Reporting of results
Annex C (normative) Fire extinguishment/area coverage fire test
        procedure for engineered and pre-engineered extinguishing
        units
      C.1 Requirements
      C.2 Type of test
      C.3 Extinguishing system
      C.4 Extinguishing concentration
      C.5 Nozzle distribution verification tests
          C.5.1 Nozzles minimum height/maximum area coverage test
          C.5.2 Nozzles maximum height test
      C.6 Extinguishing concentration tests
          C.6.1 Wood crib test
          C.6.2 Heptane pan test
          C.6.3 Polymeric sheet fire test
Annex D (normative) Method of evaluating inerting concentration
        of a fire extinguishant
      D.1 General
      D.2 Principle
      D.3 Apparatus
      D.4 Procedure
      D.5 Inerting concentration
Annex E (normative) Door fan test for determination of minimum
        hold time
      E.1 General
      E.2 Test for determination of predicted hold time
          E.2.1 Principle
          E.2.2 Apparatus
          E.2.3 Calibration and accuracy of apparatus
          E.2.4 Preliminary preparation
          E.2.5 Evaluation of enclosure
          E.2.6 Measurement of enclosure
          E.2.7 Test procedure
          E.2.8 Calculation
      E.3 Treatment of enclosures with predicted hold times less
          than the recommended value
          E.3.1 General
          E.3.2 Leakage areas
          E.3.3 Improved sealing of the enclosure
          E.3.4 Quantification and location of leaks
      E.4 Report
Annex F (informative) System performance verification
Annex G (informative) Safe personnel exposure guidelines
      G.1 General
      G.2 Safety
      G.3 Hazards to Personnel
          G.3.1 Agent itself
          G.3.2 Noise
          G.3.3 Turbulence
          G.3.4 Low temperature
      G.4 Halocarbon agents
          G.4.1 Toxicity of halocarbons (liquefied gases)
          G.4.2 PBPK Model
          G.4.3 Safe exposure guidelines for halocarbons
      G.5 Inert Gas (non-liquefied gas)
          G.5.1 Physiological effects of inert gas agents
          G.5.2 Safe exposure guidelines for inert gas agents
Annex H (informative) Flow calculation implementation method
        and flow calculation verification and testing for approvals
      H.1 General
      H.2 Calculation method implementation
      H.3 Minimum accuracy recommendations
          H.3.1 Physical quantities
          H.3.2 Recommended design limits to be included
                inside the flow calculation method (software)
      H.4 Recommended testing procedure for system flow
          calculation method (software) validation
          H.4.1 General
          H.4.2 System design for testing
      H.5 Pass/fail criteria
Bibliography