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eLibrary > BS EN 17966:2024 Fire protection equipment. Carbon dioxide extinguishing systems for use on premises. Design and installation >

BS EN 17966:2024 Fire protection equipment. Carbon dioxide extinguishing systems for use on premises. Design and installation, 2024

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BS EN 17966:2024 Fire protection equipment. Carbon dioxide extinguishing systems for use on premises. Design and installation, 2024

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European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Use and limitations [Go to Page]
4.1 General
4.2 Uses for carbon dioxide systems
4.3 Limitations for carbon dioxide systems
4.4 Temperature limitations
5 Safety [Go to Page]
5.1 Hazard to personnel
5.2 Safety precautions [Go to Page]
5.2.1 Normally occupied and normally unoccupied areas
5.2.2 Warning notices for occupiable areas
Figure 1 — Typical instruction notice to be displayed at each entry to the protected area or enclosure
Figure 2 — Typical lock-off warning system notice
Figure 3 — Typical instruction notice to be displayed at the manual release
Figure 4 — Typical lock-off valve notice [Go to Page]
5.2.3 Warning notices for unoccupiable areas
Figure 5 — Typical warning notice to be displayed at access point to the protected unoccupiable area [Go to Page]
5.3 Electrical hazards
Table 1 — Safety clearances to enable operation, inspection, cleaning, repairs, painting and normal maintenance work to be carried out [Go to Page]
5.4 Electrical earthing
5.5 Electrostatic discharge
6 System design [Go to Page]
6.1 General [Go to Page]
6.1.1 Introduction
6.1.2 Specifications
6.1.3 Working documents
6.2 Carbon dioxide supply [Go to Page]
6.2.1 Quality
Table 2 — Requirements for carbon dioxide properties [Go to Page]
6.2.2 Quantity
6.2.3 Container arrangement [Go to Page]
6.2.3.1 General requirements
6.2.3.2 Conditions for the storage of pressurized containers
6.2.3.3 Arrangement for high-pressure containers
6.2.4 Storage containers [Go to Page]
6.2.4.1 General
6.2.4.2 Marking
6.2.4.3 High-pressure containers
Table 3 — Maximum storage temperature [Go to Page]
6.2.4.4 Low-pressure containers
6.2.4.5 Operating temperatures
6.3 Distribution [Go to Page]
6.3.1 General
6.3.2 Piping
6.3.3 Fittings
6.3.4 Pipe and valve support
Table 4 — Maximum pipework spans [Go to Page]
6.3.5 Valves
6.3.6 Nozzles [Go to Page]
6.3.6.1 Nozzle choice and location
6.3.6.2 Nozzles in ceiling tiles
6.3.6.3 Marking
6.4 Enclosures (total flooding) [Go to Page]
6.4.1 Structural strength
6.4.2 Loss through openings
6.4.3 Ventilation systems
6.5 Detection, actuation and control systems [Go to Page]
6.5.1 General
6.5.2 Shut-down of plant and equipment
6.5.3 Automatic detection
6.5.4 Operating devices [Go to Page]
6.5.4.1 General
6.5.4.2 Automatic operation
6.5.4.3 Manual operation
6.5.4.4 Pilot operation
6.5.5 Control equipment [Go to Page]
6.5.5.1 Electric control equipment
6.5.5.2 Electrical actuators
6.5.5.3 Pneumatic control equipment
6.5.5.4 Mechanical cable release systems
6.5.6 Audible alarms and visual indicators
7 Carbon dioxide flow and concentration calculations [Go to Page]
7.1 General
7.2 System flow calculations [Go to Page]
7.2.1 General
7.2.2 Friction losses
7.2.3 Pressure drop
7.2.4 Valves and fittings
7.2.5 As-installed calculations
7.2.6 Specific requirements
7.3 Carbon dioxide concentration requirements [Go to Page]
7.3.1 Flame extinguishment
7.3.2 Inerting
7.4 Total flooding quantity [Go to Page]
7.4.1 General
7.4.2 Design quantity
7.4.3 KB factor [Go to Page]
7.4.3.1 General
Table 5 — Material factors, design concentrations and hold times [Go to Page]
7.4.3.2 Effect of ventilation systems that cannot be shut down
7.4.3.3 Effect of openings (see 7.4.2)
7.4.3.4 Effect of enclosure temperature
7.4.3.5 Simultaneous flooding of interconnected volumes
7.5 Design of local application systems [Go to Page]
7.5.1 General
7.5.2 Carbon dioxide requirements
7.5.3 Rate by area method [Go to Page]
7.5.3.1 General
7.5.3.2 Nozzle discharge rates
7.5.3.3 Area per nozzle
7.5.3.4 Location and number of nozzles
Table 6 — Aiming factors for angular placement of nozzles
Figure 6 — Nozzle locations [Go to Page]
7.5.4 Rate by volume method [Go to Page]
7.5.4.1 General
7.5.4.2 Assumed enclosure
7.5.4.3 System discharge rate
Figure 7 — Volume discharge rate [Go to Page]
7.5.4.4 Location and number of nozzles
7.6 Duration of protection — total flooding systems
7.7 System performance [Go to Page]
7.7.1 Discharge time
Table 7 — Discharge times for surface fires [Go to Page]
7.7.2 Extended discharge
8 Commissioning and acceptance [Go to Page]
8.1 General
8.2 Tests [Go to Page]
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 [Go to Page]
9.1 General
9.2 Inspection [Go to Page]
9.2.1 General
9.2.2 Container
9.2.3 Hose
9.2.4 Enclosures
9.3 Maintenance [Go to Page]
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
A.4 Completion certificate and documentation
Table A.1 — Commissioning checklist
Figure A.1 — Certification of Completion
Annex B (normative) Carbon dioxide system pipe and orifice size determination
Table B.1 — Values of Y and Z for low-pressure systems
Table B.2 — Values of Y and Z for high-pressure systems
Figure B.1 — Pressure drop in pipeline for 2,07 MPa (20,7 bar) storage pressure
Figure B.2 — Pressure drop in pipeline for 5,17 MPa (51,7 bar) storage pressure
Table B.3 — Equivalent length of threaded pipe fittings
Table B.4 — Equivalent length of welded pipe fittings
Table B.5 — Elevation correction factors for low-pressure systems
Table B.6 — Elevation correction factors for high-pressure systems
Table B.7 — Discharge rate of equivalent orifice area for low-pressure systems
Table B.8 — Discharge rate of equivalent orifice area for high-pressure systems
Annex C (informative) System performance verification
Annex D (informative) General information on carbon dioxide
D.1 General
Figure D.1 — Variation of pressure of carbon dioxide with change in temperature (constant volume)
D.2 Free efflux
Figure D.2 — Carbon dioxide requirements for inert atmosphere, based on a carbon dioxide expansion of 0,56 m3/kg
D.3 Hazards to personnel
Table D.1 — Acute health effects of high concentrations of carbon dioxide (with increasing exposure levels of carbon dioxide)
Annex E (informative) Examples of calculations
E.1 Rate by volume method — Example 1
E.1.1 Hazard
Figure E.1 — Example paint spray booth, open front, one open side and open top
E.1.2 Actual dimensions
E.1.3 Assumed volume
E.1.4 Percent perimeter enclosed
E.1.5 Discharge rate for 71 % enclosure
E.1.6 Discharge rate
E.1.7 Carbon dioxide requirement
E.2 Rate by volume method — Example 2
E.2.1 Hazard
Figure E.2 — Example printer within a large enclosure
E.2.2 Actual dimensions
E.2.3 Assumed volume
E.2.4 Percent perimeter enclosed
E.2.5 Discharge rate for 0 % enclosure
E.2.6 Discharge rate
E.2.7 Carbon dioxide requirement
E.3 Rate by area method
E.3.1 Hazard
E.3.2 Surface dimensions
E.3.3 Nozzle location
E.3.4 Procedure
E.3.5 Total flow rate
E.3.6 Carbon dioxide requirement
E.4 Total flooding system
E.4.1 Storeroom
E.4.2 Actual dimensions
E.4.3 Assumed volume
E.4.4 Additional volume for ventilation
E.4.5 Deductible volume
E.4.6 Total surface area of all sides
E.4.7 Total surface area of all openings
E.4.8 Area
E.4.9 Carbon dioxide design quantity
Bibliography [Go to Page]

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BS EN 17966:2024 Fire protection equipment. Carbon dioxide extinguishing systems for use on premises. Design and installation, 2024

⨯To continue with accurate pricing,
please select your company type below: