SIST EN 14972-9:2020
(Main)Fixed firefighting systems - Water mist systems - Part 9: Test protocol for machinery in enclosures not exceeding 260 m³ for open nozzle systems
Fixed firefighting systems - Water mist systems - Part 9: Test protocol for machinery in enclosures not exceeding 260 m³ for open nozzle systems
This document specifies fire testing requirements for water mist systems used for fire protection of machinery in enclosures with volumes not exceeding 260 m³.
Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 9: Prüfprotokoll für Maschinen in Gehäusen bis 260 m³ für offene Düsensysteme
Dieses Dokument legt Anforderungen an Brandprüfungen von Feinsprüh Löschanlagen fest, die für den Brandschutz von Maschinen in geschlossenen Räumen mit einem Volumen bis 260 m3 eingesetzt werden.
Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 9 : Protocole d'essai des systèmes à buses ouvertes pour machines situées dans des enceintes ne dépassant pas 260 m³
Le présent document spécifie les exigences relatives aux essais de résistance au feu des systèmes à brouillard d'eau utilisés pour la protection contre l'incendie de machines situées dans des enceintes d'un volume ne dépassant pas 260 m3.
Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 9. del: Protokol preskušanja sistemov z odprtimi šobami za požarno zaščito strojev v ohišjih do 260 m³
Ta dokument določa zahteve glede požarnega preskušanja za sisteme s pršečo vodo, ki se uporabljajo za požarno zaščito strojev v ohišjih s prostornino do 260 m³.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 14972-9:2020
01-marec-2020
Vgrajeni gasilni sistemi - Sistemi s pršečo vodo - 9. del: Protokol preskušanja
sistemov z odprtimi šobami za požarno zaščito strojev v ohišjih do 260 m³
Fixed firefighting systems - Water mist systems - Part 9: Test protocol for machinery in
enclosures not exceeding 260 m³ for open nozzle systems
Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 9: Prüfprotokoll
für Maschinen in Gehäusen bis 260 m³ für offene Düsensysteme
Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 9 :
Protocole d'essai des systèmes à buses ouvertes pour machines situées dans des
enceintes ne dépassant pas 260 m³
Ta slovenski standard je istoveten z: EN 14972-9:2020
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 14972-9:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14972-9:2020
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SIST EN 14972-9:2020
EN 14972-9
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 13.220.20
English Version
Fixed firefighting systems - Water mist systems - Part 9:
Test protocol for machinery in enclosures not exceeding
260 m³ for open nozzle systems
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-
à brouillard d'eau - Partie 9 : Protocole d'essai des Löschanlagen - Teil 9: Prüfprotokoll für Maschinen in
systèmes à buses ouvertes pour machines situées dans Gehäusen bis 260 m³ für offene Düsensysteme
des enceintes ne dépassant pas 260 m³
This European Standard was approved by CEN on 11 November 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14972-9:2020 E
worldwide for CEN national Members.
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General requirements . 4
5 Test enclosure requirements . 5
6 Machinery mock-up requirement . 6
7 Test equipment requirements . 7
8 Instrumentation requirements . 8
9 Fire test requirements . 9
9.1 General . 9
9.2 Unshielded 1 MW diesel spray fire . 9
9.3 Shielded 1 MW diesel spray fire . 10
2
9.4 Shielded 1 m diesel pool fire . 10
9.5 Shielded 2 MW diesel spray fire, system performance under limited natural
ventilation . 11
9.6 Shielded 2 MW diesel spray fire, system performance at smaller enclosure volumes . 11
9.7 Unshielded 1 MW heptane spray fire . 12
9.8 Shielded 1 MW heptane spray fire . 12
2
9.9 Shielded 1 m heptane pool fire . 13
9.10 Shielded 2 MW heptane spray fire, system performance under limited natural
ventilation . 13
9.11 Shielded 2 MW heptane spray fire, system performance at smaller enclosure
volumes . 14
10 Test report . 14
2
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
European foreword
This document (EN 14972-9:2020) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by July 2020 and conflicting national standards shall be
withdrawn at the latest by July 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
EN 14972, Fixed firefighting systems — Water mist systems consists of the following parts:
— Part 1: Design, installation, inspection and maintenance;
— Part 2: Test protocol for shopping areas for automatic nozzle systems;
— Part 3: Test protocol for office, school and hotel for automatic nozzle systems;
— Part 4: Test protocol for non-storage occupancies for automatic nozzle systems;
— Part 5: Test protocol for car garages for automatic nozzle systems;
— Part 6: Test protocol for false floors and false ceilings for automatic nozzle systems;
— Part 7: Test protocol for commercial low hazard occupancies for automatic nozzle systems;
3
— Part 8: Test protocol for machinery in enclosures exceeding 260 m for open nozzle systems;
3
— Part 9: Test protocol for machinery in enclosures not exceeding 260 m for open nozzle systems;
— Part 10: Test protocol for atrium protection with sidewall nozzles for open nozzle systems;
— Part 11: Test protocol for cable tunnels for open nozzle systems;
— Part 12: Test protocol for commercial deep fat cooking fryers for open nozzle systems;
— Part 13: Test protocol for wet benches and other similar processing equipment for open nozzle systems;
3
— Part 14: Test protocol for combustion turbines in enclosures exceeding 260 m for open nozzle systems;
3
— Part 15: Test protocol for combustion turbines in enclosures not exceeding 260 m for open nozzle
systems;
— Part 16: Test protocol for industrial oil cookers for open nozzle systems;
— Part 17: Test protocol for residential occupancies for automatic nozzle systems.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
3
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
1 Scope
This document specifies fire testing requirements for water mist systems used for fire protection of
3
machinery in enclosures with volumes not exceeding 260 m .
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
1)
EN 14972-1:— , Fixed firefighting systems — Water mist systems — Part 1: Design, installation,
inspection and maintenance
3 Terms and definitions
1)
For the purposes of this document, the terms and definitions given in EN 14972-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
machinery enclosure
any enclosure containing equipment that uses fuel and/or lubrication fluids with volatilities less than or
equal to heptane
4 General requirements
4.1 The water mist system, operating without manual intervention, shall successfully complete all
described performance fire tests for their specific applications.
4.2 The fire tests shall be conducted until the fire is extinguished, as required by the applicable fire
test.
4.3 System components, component locations, operating conditions and test enclosure details shall
remain unaltered throughout all of the fire tests for a given application.
4.4 All fire tests shall be conducted using the specifications from the manufacturer’s DIOM manual in
regard to nozzle placement, spray flux, and spray duration. Sprays can be continuous or intermittent in
time. In the case of intermittent, or cycled, sprays, the time period during which the system is not
discharging shall not be greater than 50 % of one complete on/off cycle. The system off period shall not
exceed one minute.
4.5 In conjunction with the performance fire tests, all twin fluid water mist systems (except for those
applying compressed air) shall be subjected to a straight discharge test with no fire to evaluate the
resulting discharge and oxygen concentration. This evaluation shall be conducted using the maximum
extinguishing agent flow and pressure. The discharge duration for the test shall be the maximum
1) Under preparation. Stage at the time of publication: prEN 14972-1:2019.
4
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
required for the system and occupancy to be protected. Oxygen measurements shall be recorded at a
location(s) within the test enclosure. This information shall be used to evaluate personnel safety, and
shall be accounted for in the manufacturer’s DIOM manual.
4.6 Up to a maximum of 5 nozzles used in the fire tests shall be kept for later verification.
5 Test enclosure requirements
The test enclosure volume shall have main dimensions of 7,30 m by 7,30 m by 4,90 m high. The
enclosure shall be constructed of wood or metal frame with an inner lining of minimum 13,00 mm
gypsum or 0,70 mm galvanized steel (see Figure 1). To minimize leakages, all joints and gaps shall be
sealed. At 2,70 m from one of the enclosure corners, in one of the walls parallel to the machinery
equipment mock-up, a 0,80 m by 2,00 m high personnel door shall be installed with a locking
mechanism.
A 1,20 m by 2,40 m high removable panel shall also be installed in one of the walls to allow for test
enclosure access (The personnel door can be constructed within this panel). A minimum of two hinged
ceiling hatches measuring approximately 0,90 m by 1,80 m shall be installed in opposite diagonal
corners for heat and smoke release at the conclusion of the fire test.
The floor shall be non-combustible and any floor drainage or vent openings shall be sealed during
testing. A small louvered vent can be provided to allow the intake of air, to prevent excessive suctioning
of the walls and ceiling and maintain structural integrity of the fire test enclosure.
5
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
Dimensions in metres
Key
a) front view 3 removable panel (1,2 m x 2,4 m)
b) side view 4 window
c) top view 5 tray
1 ceiling hatch (typical) 6 sheet metal
2 door (0,8 m x 2,0 m)
Figure 1 — Test enclosure and machinery mock-up steel plate
6 Machinery mock-up requirement
The machinery mock-up is simulated with a horizontal flat steel plate and steel baffles to provide
shielded spaces for fires (see Figure 1). The specific details and thermal mass of the obstructions are not
simulated.
6
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SIST EN 14972-9:2020
EN 14972-9:2020 (E)
The machinery mock-up unit should be centred along the longer wall dimension in the test enclosure.
A horizontal hot rolled 1.0044 steel plate according to EN 10025-2 or other equivalent steel, 1,00 m
wide by 2,00 m long by 5,00 cm thick, is placed at 1 m elevation on steel legs at the four corners of the
plate. This is located in the centre of the room or at a location within the test cell to be selected after the
nozzles are installed (as per manufacturer's specifications). This allows the fire to be placed in an area
considered the most challenging to the specific system being tested.
Horizontal 0,85 mm thick galvanized steel sheet metal shall be placed at an elevation of 1,00 m on steel
legs, on both sides of the 1.0044 steel table, so that the machinery mock-up extends longitudinally the
entire length of the enclosure (see Figure 1).
The underside curvature of the machinery is simulated with 0,85 mm thick galvanized sheet metal
directed upward at an angle of 45 degrees on either side of the steel plate and horizontal sheet metal
extension surface. These side pieces also extend longitudinally the entire length of the enclosure, rising
to a height of 1,50 m above the horizontal sheet metal and steel plate surfaces. The total width of the
mock-up is 2,00 m. There should be a minimal gap between the various steel table and sheet metal
surfaces to permit water run-off.
The space below the plate is partially shielded from water mist using 1,00 m high by 0,50 m wide sheet
metal baffles. The side baffles should be of 0,85 mm thick galvanized sheet metal construction and
removable. They can be installed on support legs and kept in place by being pinched between the
underside of the steel plate table and the 45 degree angle extensions and the floor for ease of removal.
Placement of additional baffles or obstructions can be needed to prevent the direct impact of mist on
the pool or spray test fires.
7 Test equipment requirements
7.1 The test laboratory shall be of adequat
...
SLOVENSKI STANDARD
oSIST prEN 14972-9:2019
01-januar-2019
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Fixed firefighting systems - Water mist systems - Part 9: Test protocol for machinery in
enclosures not exceeding 260 m3 for open nozzle systems
Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-Löschanlagen - Teil 9: Prüfprotokoll für
Maschinen in Gehäusen bis 260 m³ für offene Düsensysteme
Installations fixes de lutte contre l'incendie - Systèmes à brouillard d'eau - Partie 9 :
Protocole d'essai des systèmes à buses ouvertes pour machines situées dans des
enceintes ne dépassant pas 260 m³
Ta slovenski standard je istoveten z: prEN 14972-9
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 14972-9:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 14972-9:2019
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oSIST prEN 14972-9:2019
DRAFT
EUROPEAN STANDARD
prEN 14972-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2018
ICS 13.220.20
English Version
Fixed firefighting systems - Water mist systems - Part 9:
Test protocol for machinery in enclosures not exceeding
3
260 m for open nozzle systems
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Feinsprüh-
à brouillard d'eau - Partie 9 : Protocole d'essai des Löschanlagen - Teil 9: Prüfprotokoll für Maschinen in
systèmes à buses ouvertes pour machines situées dans Gehäusen bis 260 m³ für offene Düsensysteme
des enceintes ne dépassant pas 260 m³
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14972-9:2018 E
worldwide for CEN national Members.
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General requirements . 4
5 Enclosure requirements . 5
6 Machinery mock-up requirement . 7
7 Test equipment requirements . 7
8 Instrumentation requirements . 8
9 Fire Tests . 9
9.1 General . 9
9.2 Unshielded 1 MW diesel spray fire . 10
9.3 Shielded 1 MW diesel spray fire . 10
2
9.4 Shielded 1 m diesel pool fire . 11
9.5 Shielded 2 MW diesel spray fire, system performance under limited natural
ventilation . 11
9.6 Shielded 2 MW diesel spray fire, system performance at smaller enclosure volumes . 12
9.7 Unshielded 1 MW heptane spray fire . 12
9.8 Shielded 1 MW heptane spray fire . 13
2
9.9 Shielded 1 m heptane pool fire . 13
9.10 Shielded 2 MW heptane spray fire, system performance under limited natural
ventilation . 14
9.11 Shielded 2 MW heptane spray fire, system performance at smaller enclosure
volumes . 14
10 Test report . 15
2
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
European foreword
This document (prEN 14972-9:2018) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
EN 14972, Fixed firefighting systems — Water mist systems consists of the following parts:
— Part 1: Design, installation, inspection and maintenance;
— Part 2: Test protocol for shopping areas for automatic nozzle systems;
— Part 3: Test protocol for office, school class rooms and hotel for automatic nozzle systems;
— Part 4: Test protocol for non-storage occupancies for automatic nozzle systems;
— Part 5: Test protocol for car garages for automatic nozzle systems;
— Part 6: Test protocol for false floors and false ceilings for automatic nozzle systems;
— Part 7: Test protocol for commercial low hazard occupancies for automatic nozzle systems;
3
— Part 8: Test protocol for machinery in enclosures exceeding 260 m for open nozzle systems;
3
— Part 9: Test protocol for machinery in enclosures not exceeding 260 m for open nozzle systems;
— Part 10: Test protocol for atrium protection with sidewall nozzles for open nozzle systems;
— Part 11: Test protocol for cable tunnels for open nozzle systems;
— Part 12: Test protocol for commercial deep fat cooking fryers for open nozzle systems;
— Part 13: Test protocol for wet benches and other similar processing equipment for open nozzle systems;
3
— Part 14: Test protocol for combustion turbines in enclosures exceeding 260 m for open nozzle systems;
3
— Part 15: Test protocol for combustion turbines in enclosures not exceeding 260 m for open nozzle
systems;
— Part 16: Test protocol for industrial oil cookers for open nozzle systems.
3
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
1 Scope
This document specifies fire testing requirements for water mist systems used for fire protection of
3
machinery in enclosures with volumes not exceeding 260 m .
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
prEN 14972-1, Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and
1)
maintenance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in CEN/TS 14972 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
machinery enclosure
any enclosure containing equipment that uses fuel and/or lubrication fluids with volatilities less than or
equal to heptane
EXAMPLE Internal combustion engines (excluding engine test cells), oil pumps, oil tanks, fuel filters,
generators, transformer vaults, gear boxes, drive shafts, lubrication skids, diesel engine driven
generators, and other similar equipment using liquid hydrocarbon fuel and/or hydraulic, heat transfer,
and lubrication fluids with volatility less than or equal to heptane; enclosures with incidental use or
storage of hydrocarbon ignitable liquids (also known as flammable liquids) of not more than two 208
litre drums.
4 General requirements
4.1 The tests should be conducted until the fire is extinguished, as required by the applicable fire test.
4.2 System components, component locations, operating conditions and test enclosure details shall
remain unaltered throughout all of the fire tests for a given application.
4.3 All fire tests should be conducted following the manufacturer’s instructions in regard to nozzle
placement, spray flux, and spray duration. Sprays can be continuous or intermittent in time. In the case
of intermittent, or cycled, sprays, the time period during which the system is not discharging shall not
be greater than 50 % of one complete on/off cycle. The system off period shall not exceed one minute.
1) This document is currently in preparation.
4
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
4.4 In conjunction with the performance fire tests, all twin fluid water mist systems should be
subjected to a straight discharge test with no fire to evaluate the resulting discharge and oxygen
concentration. This evaluation should be conducted using the maximum extinguishing agent flow and
pressure. The discharge duration for the test shall be the maximum required for the system and
occupancy to be protected. Oxygen measurements should be recorded at a location(s) within the test
enclosure. This information shall be used to evaluate personnel safety, and should be accounted for in
the manufacturer’s design, installation, operation, and maintenance manual.
5 Enclosure requirements
The test enclosure area shall have main dimensions of 7,3 m by 7,3 m by 4,9 m high. The enclosure
should be constructed of wood or metal frame with an inner lining of minimum 13 mm gypsum or
0,7 mm galvanized steel (see Figure 1). To minimize leakages, all joints and gaps shall be sealed. At
2,7 m from one of the enclosure corners, in one of the walls parallel to the machinery equipment mock-
up, a 0,8 m by 2,0 m high personnel door should be installed with a locking mechanism.
A 1,2 m by 2,4 m high removable panel should also be installed in one of the walls to allow for test
enclosure access (The personnel door can be constructed within this panel). A minimum of two hinged
ceiling hatches measuring approximately 0,9 m by 1,8 m should be installed in opposite diagonal
corners for heat and smoke release at the conclusion of the fire test.
The floor should be non-combustible and any floor drainage or vent openings should be sealed during
testing. A small louvered vent can be provided to allow the intake of air, to prevent excessive suctioning
of the walls and ceiling and maintain structural integrity of the fire test enclosure.
5
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
Dimensions in metres
Key
1 ceiling hatch (typical)
2 door (0,8 m x 2,0 m)
3 removable panel (12 m x 2,4 m)
4 window
5 pan
6 sheet metal
Figure 1 — Test enclosure and machinery mock-up steel plate
6
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oSIST prEN 14972-9:2019
prEN 14972-9:2018 (E)
6 Machinery mock-up requirement
The machinery mock-up is simulated with a horizontal flat steel table and steel baffles to provide
shielded spaces for fires (see Figure 1). The specific details and thermal mass of the obstructions are not
simulated. The mock-up unit should be centred along the longer wall dimension in the test enclosure.
Horizontal 0,85 mm thick galvanized steel sheet metal shall be placed at an elevation of 1 m on steel
legs, on both sides of the steel table, so that the mock-up extends longitudinally the entire length of the
enclosure (see Figure 1). This is located in the centre of the room or at a location within the test cell to
be selected after the nozzles are installed (as per manufacturer's design criteria). This allows the fire to
be placed in an area considered the most challenging to the specific system being tested.
The bottom of a cylindrical piece of equipment is simulated with 0,85 mm thick galvanized steel sheet
metal directed upward at an angle of 45° on either side of the horizontal steel sheet metal table surface.
These side pieces also extend longitudinally the entire length of the enclosure, rising to a height of 1,5 m
above the horizontal steel sheet metal surface. The total width of the mock-up is 2,0 m. If multiple
sections of steel sheet metal are used, there should be a minimal gap between the various sections to
permit water run-off. It is recommended to either butt up or simply attach the table and sheet metal
extension surfaces with screw fasteners.
The space below the table is partially shielded from water mist using 1 m high by 0,5 m wide sheet
metal baffles. The side baffles should be of 0,85 mm thick galvanized sheet metal construction and
removable. They can be installed on support legs and kept in place by being pinched between the
underside of the steel table and the 45 degree angle extensions and the floor for ease of removal.
7 Test equipment requirements
7.1 The test laboratory should be of adequate size with natural or minimal ventilation so as to not
interfere with the fire testing within the enclosure or about the mock-up or test fuel package.
7.2 The size of the test laboratory should not impact extinguishment of any test fires (i.e. depletion of
oxygen due to an inadequately sized test laboratory).
7.3 For all fire tests, the ceiling, floor, and walls should be as dry as possible, with only ambient
moisture content allowed. The relative humidity in the test enclosure should not significantly differ
from that of the ambient relative humidity.
7.4 The test enclosures or laboratory shall be at an ambient temperature of (20 ± 10) °C prior to the
start of the test. The enclosure or hall shall be at as uniform an ambient temperature as reasonably
possible. Localized hot or cold spots are not permitted. All non-fire induced drafts shall be eliminated.
7.5 The minimum operating nozzle pressure (as specified by the manufacturer) shall be used for all
tests, unless otherwise noted. System operating pressures shall be repeatable to within ± 5 %. If the
system pressures cannot be controlled within the specified tolerance, fire tests should be conducted at
the minimum and maximum pressure by using external means to control the system pressure.
7.6 The maximum nozzle ceiling height and spacing (as specified by the manufacturer) shall be used
for all tests. This includes utilizing the maximum ceiling spacing of the nozzles from the walls.
7.7 The ceiling nozzle arrangement shall have uniform spacing. The ceiling nozzle spacing from the
wall shall be uniform, preferably one half of the main spacing.
7.8 The discharge from water mist doorway nozzles, if used, are no
...
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