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BSI 23/30469191 DC:2023 Edition

BSI 23/30469191 DC:2023 Edition

$13.70

BS EN 17450-2. Fixed firefighting systems. Water mist systems – Part 2. Product characteristics and test methods for nozzles

Published By Publication Date Number of Pages
BSI 2023 40
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This document specifies product characteristics and test methods of open nozzles and automatic nozzles for use in water mist systems.

PDF Catalog

PDF Pages PDF Title
1 30469191-NC.pdf
3 41_e_stf (2).pdf
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Product characteristics
4.1 General
10 4.2 Nominal operating temperature for automatic nozzles
4.3 Thermal response of automatic nozzles
4.4 K-factor
4.5 Function of nozzles
4.5.1 Automatic nozzles
11 4.5.2 Open nozzles
4.6 Strength of nozzle body and deflector
4.6.1 Mechanical strength test
4.6.2 Hydrostatic strength test
4.6.3 Strength of nozzle deflector and its supporting or moving parts
4.7 Strength of release element of automatic nozzles
4.7.1 General
4.7.2 Automatic nozzles using glass-bulbs
4.7.3 Automatic nozzles using fusible links
4.8 Leak resistance
4.9 Heat exposure for automatic nozzles
4.10 Resistance against thermal shock for automatic nozzles
12 4.11 Resistance against corrosion
4.11.1 Stress corrosion for nozzles with brass parts
4.11.2 Sulphur dioxide corrosion
4.11.3 Salt mist corrosion
4.11.4 Moist air exposure
13 4.12 Aging test (by heat exposure) for automatic nozzles (optional)
4.13 Resistance against water hammer for automatic nozzles
4.14 Resistance to heat
4.15 Resistance to low temperature for automatic nozzles (optional)
4.16 Resistance to vibration
4.17 Resistance to impact
5 Testing, assessment and sampling methods
5.1 General
14 5.2 Operational tests
5.2.1 Comparison of fire test nozzles with the one used for component testing
5.2.2 Operating temperature of automatic nozzles
5.3 Thermal response tests
5.4 Water flow test
5.5 Function test of nozzles
5.5.1 Function of release element for automatic nozzles
15 5.5.2 Functional test for open nozzles with blow-off caps
5.5.3 Verification functional test
16 5.6 Strength of nozzle body and deflector tests
5.6.1 Mechanical strength test
5.6.2 Hydrostatic strength test
5.6.3 Strength of nozzle deflector and its supporting or moving parts test
5.7 Strength of release elements test for automatic nozzles
5.7.1 General
17 5.7.2 Automatic nozzles using glass bulbs
5.7.3 Automatic nozzles using fusible links
5.8 Leak resistance test
5.9 Heat exposure for automatic nozzles
18 5.10 Thermal shock test
5.11 Corrosion tests
5.11.1 Stress corrosion
5.11.1.1 Stress corrosion for nozzles with brass parts
5.11.1.2 Post exposure tests for automatic nozzles requiring further investigation
5.11.1.3 Post exposure tests for open nozzles requiring further investigation
5.11.2 Sulphur dioxide corrosion
5.11.3 Salt mist corrosion
5.11.4 Moist air exposure
19 5.12 Aging test (by heat exposure) for automatic nozzles (optional)
5.13 Water hammer test
20 5.14 Heat-resistance test
5.15 Low temperature resistance test for automatic nozzles (optional)
5.16 Vibration test
21 5.17 Resistance to impact test
22 6 Documentation and marking
6.1 Product documentation
6.2 Marking
23 7 Test facilities
7.1 Test facility
7.2 Test report
24 AnnexĀ A (normative)Test apparatus for water flow test
A.1 Single inlet pipe nozzle
A.2 Calculation
26 AnnexĀ B (informative)Water distribution test
B.1 Apparatus
B.2 Procedure
28 AnnexĀ C (normative)Corrosion tests
C.1 Stress corrosion test for brass nozzles
C.1.1 Reagents
C.1.2 Apparatus
C.1.3 Procedure
C.2 Post exposure flowing test (if required)
C.2.1 Automatic nozzles
C.2.2 Open nozzles
C.3 Sulphur dioxide corrosion test
C.3.1 General
29 C.3.2 Reagents
C.3.3 Apparatus
C.3.4 Procedure
C.3.4.1 General
C.3.4.2 Automatic nozzles
C.3.4.3 Open nozzles
30 C.4 Salt mist corrosion test
C.4.1 Reagents
C.4.2 Apparatus
31 C.4.3 Procedure
C.5 Moist air atmosphere test
32 AnnexĀ D (normative)Thermal response tests
D.1 Test setup
D.2 Prolonged exposure ramp test
33 D.3 Plunge test
35 AnnexĀ E (normative)Strength of water mist body and deflector tests
E.1 Body
E.1.1 Mechanical strength test
37 E.1.2 Hydrostatic strength test
38 AnnexĀ F (normative)Test to determine operating temperatures
F.1 Apparatus
F.2 Procedure

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$13.70