ISO/DIS 6182-9

Fire protection -- Automatic sprinkler system

Protection contre l'incendie -- Systèmes d'extinction automatique du type sprinkler

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 6182-9
ISO/TC 21/SC 5 Secretariat: ANSI
Voting begins on: Voting terminates on:
2003-08-19 2004-01-19

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Fire protection — Automatic sprinkler system —
Part 9:
Requirements and test methods for water mist nozzles

Protection contre l'incendie — Systèmes d'extinction automatique du type sprinkler —

Partie 9: Prescriptions et méthodes d'essai des ajutages ('brouillard')
ICS 13.220.20

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee secretariat.

ISO Central Secretariat work of editing and text composition will be undertaken at publication

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Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

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Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
© International Organization for Standardization, 2003
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ISO/DIS 6182-9
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ISO/DIS 6182-9
Contents Page

Foreword ..........................................................................................................................................................v

Introduction......................................................................................................................................................v

1 Scope...................................................................................................................................................1

2 NORMATIVE REFERENCES.......................................................................................................................8

3 TERMS AND DEFINITIONS.........................................................................................................................9

4 PRODUCT CONSISTENCY .......................................................................................................................14

5 GENERAL REQUIREMENTS.....................................................................................................................14

6 ELASTOMERIC MATERIALS....................................................................................................................15

7 WATER MIST NOZZLE REQUIREMENTS ................................................................................................17

8 TEST METHODS........................................................................................................................................33

9 WATER MIST NOZZLE MARKING............................................................................................................83

10 DESIGN, INSTALLATION AND MAINTENANCE INSTRUCTIONS .........................................................85

ANNEX A: TOLERANCE LIMIT CALCULATION METHODS (MANDATORY) .............................................99

ANNEX B: ANALYSIS OF THE STRENGTH TEST FOR FUSIBLE ELEMENTS (INFORMATIONAL).......102

ANNEX C: NOZZLE RESPONSE SAMPLE CALCULATIONS (INFORMATIONAL)...................................104

ANNEX D: TOLERANCES (MANDATORY) ................................................................................................106

FIGURES

FIGURE 1 — IMPACT TEST APPARATUS....................................................................................................86

FIGURE 2 — ENGINE MOCK-UP DETAIL .....................................................................................................87

FIGURE 3 — ENGINE MOCK-UP DETAIL .....................................................................................................88

FIGURE 4 — ENGINE MOCK-UP DETAIL .....................................................................................................89

FIGURE 5 — 12M CABIN AND CORRIDOR DETAILS ..................................................................................90

FIGURE 6 — BUNK BED ARRANGEMENT...................................................................................................91

FIGURE 7 — CORRIDOR FIRE FUEL PACKAGE .........................................................................................92

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ISO/DIS 6182-9
FIGURE 8 — LOCATION OF THERMOCOUPLES IN THE CABIN/CORRIDOR AND AREAS
RESTRICTED FOR

LOCATION OF NOZZLES..................................................................................................................93

FIGURE 9 — 24 M AND LARGER CABIN FIRE TEST ARRANGEMENT ....................................................94

FIGURE 10 — CABIN FIRE TEST CRIB AND SIMULATED FURNITURE FUEL PACKAGE........................95

FIGURE 11 — PUBLIC SPACE FIRE TEST ARRANGEMENT ......................................................................96

FIGURE 12 — PUBLIC SPACE CORNER FIRE TEST ARRANGEMENT......................................................97

FIGURE 13 — PUBLIC SPACE ORDINARY HAZARD TEST ARRANGEMENT ...........................................98

TABLES

TABLE 1 — OVEN AGING .............................................................................................................................16

TABLE 2 — NOMINAL RELEASE TEMPERATURE......................................................................................18

TABLE 3 — CLASSIFICATION OF CATEGORY A ENGINE ROOMS...........................................................29

TABLE 4 — PERFORMANCE CRITERIA FOR 12 M CABIN/CORRIDOR FIRE TEST ................................31

TABLE 5 — PLUNGE OVEN TEST CONDITIONS .........................................................................................39

TABLE 6 — PLUNGE OVEN TEST CONDITIONS FOR CONDUCTIVITY DETERMINATION ......................41

TABLE 7 — TEST TEMPERATURES FOR COATED AND UNCOATED AUTOMATIC NOZZLES...............46

TABLE 8 — CONTAMINANT FOR CONTAMINATED WATER TEST............................................................60

TABLE 9 — MACHINERY SPACE FIRE TEST SCENARIOS ........................................................................63

TABLE 10 — OIL SPRAY FIRE TEST PARAMETERS ..................................................................................65

TABLE A.1 — TABLE FOR K, FACTORS FOR ONE-SIDED TOLERANCE LIMITS FOR NORMAL

DISTRIBUTIONS ..............................................................................................................................100

TABLE A.2 — TOLERANCE LIMIT WORKSHEET FOR STRENGTH OF HEAT-RESPONSIVE
ELEMENT TEST FOR

FRANGIBLE BULB TYPES..............................................................................................................101

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ISO/DIS 6182-9
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 6182-9 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting,

Subcommittee SC 5, Sprinkler and water spray extinguishing systems.

ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:

— Part 1: Requirements and test methods for sprinklers

— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms

— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves

— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers

— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
Part 10: Requirements and test methods for domestic sprinklers
Part 11: Requirements and test methods for pipe hangers
Part 12: Requirements and test methods for grooved end pipe couplings
Part 13: Requirements and test methods for extended coverage sprinklers

All pressure data in this ISO Standard are given as gauge pressure in bar (1 bar = 0,1 MPa).

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ISO/DIS 6182-9
Introduction

This part of ISO 6182 is one of a number of ISO Standards prepared by ISO/TC 21 covering components for

automatic sprinkler systems.
They are included in a series of ISO Standards planned to cover the following:
a) carbon dioxide systems (ISO 6183),
b) explosion suppression systems (ISO 6184),
c) foam systems (ISO/DIS 7076).
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DRAFT INTERNATIONAL STANDARD ISO/DIS 6182-9
Fire protection — Automatic sprinkler system —
Part 9:
Requirements and test methods for water mist nozzles
1 Scope

This part of ISO 6182 specifies performance requirements, test methods and marking requirements for water

mist nozzles.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute

provisions of this part of ISO 6182. For dated references, subsequent amendments to, or revisions of, any of

these publications do not apply. However, parties to agreements based on this part of ISO 6182 are

encouraged to investigate the possibility of applying the most recent editions of the normative documents

indicated below. For undated references, the latest edition of the normative document referred to applies.

Members of ISO and IEC maintain registers of currently valid International Standards.

ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Designation, Dimension

and Tolerances.

ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties.

ISO 49, Malleable cast iron fittings threaded to ISO 7-1.
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1.
ISO 188: 1982, Rubber, vulcanized — Accelerated ageing or heat-resistance tests.
ISO 5660-1, Rate of heat release from building products.

ANSI/UL 723: 1993, Test for surface burning characteristics of building materials.

ASTM E 799: 1992, Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size

Analysis.

ASTM E 11: 1987, Standard Specification for Wire - Cloth Sieves for Testing Purposes.

IMO Resolution A.653(16).
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ISO/DIS 6182-9
3 Definitions

3.1 assembly load the force exerted on the nozzle body at 0 bar hydraulic pressure at the inlet.

3.2 conductivity factor (C) measure of the conductance between the nozzle's heat-responsive element and

0,5
the fitting expressed in units of (m/s)

3.3 control spaces shipboard areas such as the bridge, radio room and emergency power room

3.4 corrosion resistant material materials of bronze, brass, monel metal, stainless steel or plastic

3.5 design load force exerted on the release element at the service load of the nozzle

3.6 fire control limiting the growth of a fire and controlling ceiling gas temperatures to prevent structural

damage

3.7 fire suppression sharply reducing the rate of heat release of a fire and preventing its regrowth

3.8 fire extinguishment. a zero rate of heat release, definite stoppage of flames and no re-ignition

3.9 flame spread index (FSI) fire spread characteristic measured in accordance with the Standard for tests

for surface burning characteristics of building materials, ANSI/UL 723

3.10 fuel package combustible materials in which the fire is ignited and the combustible materials covering

the walls and ceiling

3.11 low hazard area area where the quantity and/or combustibility of contents is low and fires with relatively

low rates of heat release are expected

3.12 shipboard machinery spaces engine rooms and cargo pump rooms containing combustible or

flammable liquids having fire characteristics no more severe than that of light diesel oil

3.13 nozzles

3.13.1 automatic nozzle thermosensitive device designed to react at a predetermined temperature by

automatically releasing water mist into a designated area and volume having a response time index (RTI) of

1/2 1/2
not more than 50 (ms) and a conductivity factor (C) not more than 1,0 (m/s) .

3.13.2 coated nozzle nozzle that has a factory applied coating for corrosion protection

1/2

3.13.3 fast response nozzle automatic nozzle having a response time index (RTI) not more than 50 (ms)

1/2
and a conductivity factor (C) not more than 1,0 (m/s)

3.13.4 fusible element nozzle nozzle that opens under the influence of heat by the melting of a component

3.13.5 glass bulb nozzle nozzle that opens under the influence of heat by the bursting of the glass (frangible)

bulb through pressure resulting from expansion of the enclosed fluid

3.13.6 multiple orifice nozzle nozzle having two or more outlet orifices arranged to distribute the water

discharge in a specified pattern and quantity for a definite protection area
3.13.7 open nozzle nozzle without a thermosensitive element

3.13.8 pendent nozzle nozzle that is arranged in such a way that the water mist is directed initially downward

by striking a distribution plate or by nozzle orientation
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ISO/DIS 6182-9

3.13.9 upright nozzle nozzle that is arranged in such a way that the water mist is initially directed upwards

against a distribution plate

3.14 operating pressure service pressure at which a nozzle is intended to operate

3.15 rated working pressure maximum service pressure at which a nozzle is intended to operate, but not

less than 12bar

3.16 protective cap: a device attached to the nozzle for the purpose of protecting the nozzle throughout

transport and installation but mainly for the protection of the nozzle while in service.

1/2

3.17 response time index (RTI) measure of automatic nozzle sensitivity expressed as RTI = tu , where t is

the time constant of the heat-responsive element in units of seconds, and u is the gas velocity expressed in

1/2
meters per second. RTI has units of (ms) .

NOTE RTI can be used in combination with the conductivity factor (C) to predict the response of a nozzle in fire

environments defined in terms of gas temperature and velocity versus time.

3.18 service load the combined force exerted on the nozzle body by the assembly load of the nozzle and the

equivalent force of the rated working pressure applied at the inlet

3.19 shipboard passenger cabin area with sleeping facilities that are assigned to passengers for their

private use

3.20 shipboard public space area where people may gather such as restaurants, dining rooms, lounges,

corridors and offices

3.21 shipping cap a device attached to the nozzle for the purpose of protecting the nozzle only during

transport and installation. Shipping caps are not intended to remain on the nozzle after the installation is

complete.

3.22 standard hazard area area where the quantity and combustibility of contents is moderate, stockpiles of

combustibles do not exceed 1,5 m and fires with moderate rates of heat release are expected

3.23 standard orientation orientation where the airflow is perpendicular to both the axis of the nozzle's inlet

and the plane of the frame arms, if provided, that produces the shortest response time

3.24 worst case orientation orientation that produces the longest response time with the axis of the nozzle

inlet perpendicular to the airflow
4 Product consistency

It shall be the responsibility of the manufacturer to implement a quality control program to ensure that

production continuously meets the requirements in the same manner as the originally tested samples. Before

testing, nozzles shall be examined with respect to marking, conformity to manufacturer's drawings and

obvious defects.

Every automatic water mist nozzle shall pass a leak resistance test equivalent to a hydrostatic pressure of at

least twice the rated working pressure, but not less than 30,0 bar, applied for at least 2 sec.

5 General requirements
5.1 Materials
5.1.1 All water mist nozzles shall be made from corrosion resistant materials.
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ISO/DIS 6182-9

5.1.2 A water mist nozzle shall be constructed to effect closure of its water seat for extended periods of time

without leakage and to open as intended and release all parts from the minimum operating pressure up to the

rated working pressure. The closure of the water seat shall not be achieved by the use of a dynamic o-ring or

similar seal (an o-ring or similar seal that moves during operation or is in contact with a component that moves

during operation.

5.2 Prevention of field adjustment The load on the heat-responsive element in automatic nozzles shall be

set by the manufacturer in such a manner so as to prevent field adjustment or replacement. The nozzle

orifice/deflector shall be permanently attached to the nozzle so as to prevent field adjustment or replacement.

5.3 Drawing review The requirements and tests in clauses 7 and 8 shall be conducted for each type of

nozzle. Before testing, precise drawings of parts and the assembly shall be submitted together with the

appropriate specifications and a copy of the manufacturer’s design and installation instructions

5.4 Pipe and fitting threads

5.4.1 Pipe and fitting threads shall conform to the applicable requirements of the International Standard for

Pipe Threads, ISO 7-1:1982.

5.4.2 If International Standards are not applicable, then National Standards are permitted to be used.

5.5 Strainers and filters

5.5.1 Each water mist nozzle shall be provided with a strainer or filter constructed from corrosion resistant

materials. The maximum dimension of an opening in the strainer or filter shall not exceed 80 % of the

smallest orifice diameter being protected.

5.5.2 All nozzles shall be constructed so that a sphere of diameter 8 mm can pass through each water

passage in the nozzle. Nozzle with smaller openings shall utilize an integral strainer with each nozzle.

6 Elastomeric materials

6.1 Properties An elastomer used to provide a water seal shall be tested to determine that it has the

following properties.

a) As-received materials, when tested in accordance with ISO 37, shall be of minimum tensile strength of 3,4

MPa for silicone rubber having the characteristic constituent of poly-organo-siloxane and 10,3 MPa for other

elastomers.

b) When tested in accordance with ISO 188, the physical properties after oven aging at the time and

temperature specified in Table 1 shall be at least 60 % of the original tensile strength and elongation values.

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ISO/DIS 6182-9
Maximum service Oven time Oven temperature
temperature
h °C
60 70 100
75 168 100
80 168 113
90 168 121
105 168 136
115 1 440 123
125 1 440 133
135 1 440 143
145 1 440 153
150 1 440 158
155 1 440 164
165 1 440 174
175 1 440 184
185 1 440 194
195 1 440 204
200 1 440 210
210 1 440 220
220 1 440 230
230 1 440 240
240 1 440 250
250 1 440 260
Table 1 — Oven Aging

6.2 A part with an inside diameter larger than 25 mm shall be subjected in whole to the above tests. If the

size of the actual part is less than 25 mm or otherwise precludes accurate testing, larger samples of similar

parts or sheet material made of the same compound are to be subjected to the tests.

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ISO/DIS 6182-9
7 Water mist nozzle requirements (see 8. Test methods)

7.1 Dimensions Nozzles shall be provided with a 6 mm or larger nominal inlet thread. The dimensions of all

threaded connections shall conform to International Standards where applied. If International Standards are

not applicable, National Standards may be used.
7.2 Nominal operating temperatures

7.2.1 The nominal operating temperatures of automatic glass bulb nozzles shall be as indicated in Table 2.

Glass bulb nozzles Fusible element nozzles
Nominal Nominal
release Liquid color release Color
temperature code temperature code
57 orange 57 – 77 uncolored
68 red 80 – 107 white
79 yellow 121 – 149 blue
93 – 107 green 163 – 191 red
121 – 141 blue
163 – 182 mauve
Table 2 — Nominal release temperature

7.2.2 The nominal operating temperatures of automatic fusible element nozzles shall be specified in advance

by the manufacturer and verified in accordance with 7.3. They shall be determined as a result of the nominal

release temperature test. See 8.6.1. Nominal operating temperatures shall be within the ranges specified in

Table 2.

7.2.3 The nominal operating temperature that is to be marked on the nozzle shall be that which is determined

when the nozzle is tested in accordance with 8.6.1, taking into account the specifications of 7.3.

7.3 Operating temperatures Automatic nozzles shall open within a temperature range of X ± (0,035X +

0,62) °C where X is the nominal operating temperature.
7.4 Water flow and distribution and droplet size
7.4.1 Flow constant See 8.10.

7.4.1.1 The flow constant K for nozzles shall be calculated by the following formula:

K =
0,5
where
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ISO/DIS 6182-9
P is the pressure in bars;
Q is the flow rate in l/min.

7.4.1.2 The value of the flow constant K published in the manufacturer’s design and installation instructions

shall be verified using the test method of 8.10. The average flow constant K shall be within ±5 % of the

manufacturer's value.

7.4.2 Water distribution (See 8.11.1 and 10.2g). The discharge characteristics of the nozzle shall be

determined in accordance with 8.11.1.

7.4.3 Water droplet size and velocity (See 8.11.2 and 10.2g). The water droplet size distribution and droplet

velocity distribution of the nozzle shall be determined in accordance with 8.11.2.

7.5 Function See 8.5.

7.5.1 When tested in accordance with 8.5.1 to 8.5.4, an open nozzle fitted with a protective device for the

outlet shall release within 10 s after the application of pressure. An automatic nozzle shall open and, within 5

s after the release of the heat responsive element, shall operate satisfactorily by complying with the

requirements of 7.4.1. Any lodgement of released parts shall be cleared within 5 s of release or the nozzle

shall then comply with the requirements of 7.4.2 and 7.4.3.

7.5.2 A nozzle shall not sustain damage as a result of the functional test specified in 8.5.5 and shall have the

same flow constant range and water droplet size and velocity within 5 % of values as previously determined in

7.4.1 and 7.4.3.
7.6 Strength of body See 8.3.

An automatic nozzle shall not show permanent elongation of more than 0,2 % between the load-bearing

points after being subjected to two times the average service load as determined using the method of 8.3.

7.7 Strength of release element
7.7.1 Glass bulb (see 8.9.1)
When tested in accordance with 8.9.1 glass bulb elements shall
a) have an average strength of at least six times the average service load and

b) have a design strength lower tolerance limit (LTL) on the strength distribution curve of at least two times

the upper tolerance limit (UTL) of the service load distribution curve based on calculations with a degree of

confidence (y) of 0,99 for 99 percent of the samples (P). Calculations will be based on Normal or Gaussian

distribution except where other distribution can be shown to be more applicable due to manufacturing of

design factors.

7.7.2 Fusible elements Fusible heat-responsive elements in the ordinary temperature range shall be

designed to

a) sustain a load of 15 times its design load corresponding to the maximum service load measured in 8.3 for a

period of 100 h when tested in accordance with 8.9.2 or

b) demonstrate the ability to sustain the design load when tested in accordance with 8.9.2.

7.8 Leak resistance and hydrostatic strength

7.8.1 An automatic nozzle shall not show any sign of leakage when tested by the method specified in 8.4.1.

7.8.2 A nozzle shall not rupture, operate or release any parts when tested by the method specified in 8.4.2.

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ISO/DIS 6182-9
7.9 Heat exposure

7.9.1 Glass bulb nozzles There shall be no damage to the glass bulb element when the nozzle is tested by

the method specified in 8.7.1.

7.9.2 Uncoated automatic nozzles Uncoated automatic nozzles shall withstand exposure to increased

ambient temperature without evidence of leakage, weakness or failure when tested by the method specified in

8.7.2.

7.9.3 Coated automatic nozzles In addition to meeting the requirement of 7.9.2 in an uncoated version,

coated automatic nozzles shall withstand exposure to ambient temperatures without evidence of leakage,

weakness or failure of the coating when tested by the method specified in 8.7.3.

7.10 Thermal shock for glass bulb nozzles Glass bulb nozzles shall not be damaged when tested by the

method specified in 8.8. Proper operation shall not be considered as damage.
7.11 Corrosion

7.11.1 Stress corrosion When tested in accordance with 8.12.1, brass nozzles or parts shall show no

cracking, delamination or failure that could affect their ability to function as intended.

When tested in accordance with 8.12.2, stainless steel nozzles or parts shall show no cracking, delamination

or failure that could affect their ability to function as intended.
7.11.2 Sulfur dioxide corrosion Nozzles shall be resistant to sulfur dioxide s
...