IS 14609 (1999): Dry Chemical Powder for Fighting A,B,C ......AMENDMENT NO. 1 FEBRUARY 2003 TO IS 14609: 1999 DRY CHEMICALPOWDER FOR FIGHTING A, B, C CLASS FIRES - SPECIFICATION (

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है”ह”ह

IS 14609 (1999): Dry Chemical Powder for Fighting A,B,C,Class Fires -Specification [CED 22: Fire Fighting]

IS 14609 : 1999REAFFIRMED 2010

Indian Standard

DRY CHEMICAL POWDER FOR FIGHTINGA,B,C, CLASS FIRES SPECIFICATION

ICS 13.220.10

© BIS 1999

BUREAU OF INDIAN STANDARDSMANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

February 1999 Price Group 7

AMENDMENT NO. 1 FEBRUARY 2003TO

IS 14609: 1999 DRY CHEMICAL POWDER FORFIGHTING A, B, C CLASS FIRES - SPECIFICATION

( Page 2. clause 4.6.1) - Substitute the following for the existing:

'4.6.1 Procedure

Take 100 g of powder in a 250-ml beaker and store the beaker in an atmospherehaving relative humidity 90 percent at 27± 20C for a period of 6 h. Then transferthe same to a desicator containing sulphuric acid (98% w/w H2S04) for a periodof 24 h. Observe the formation of any caking or lump formation, allow it to

drop from a height of 200 mm on a smooth hard surface. The lump shall befriable to pass the requirements giyen in 4.4.'

( Page 3, clause 4.6.2.1 lines 1 to 3 ) - Substitute the following for theexisting lines:

'Place 100 g sample of powder in a nickle crucible shaped cup of suitablecapacity. '

( Page 5, Fig. 4 ) - Substitute 'dia 26' for 'dia 16' and 'I fXXJ cc' for '500 cc'.

( Page 6, Fig. 5 ) - Height of tray shall be 200 mm.

( Page 10,clause 8.1 ) -Insert the following after(e):

f) Base material and its percentage.'

(CED 22)

ReprographyUnu, 81S.New Delhi, India

AMENDMENT NO. 2 SEPTEMBER 2003TO

IS 14609: 1999 DRY CHEMICAL POWDER FORFIGHTING A, B, C CLASS FIRES - SPECIFICATION

( Pag~ 1,clause 4.3) - Insertthefollowingmatterat theend of theclause:

Olemical contentof thedeclaredbase material shallbe checkedas per the proceduregiv~ below.

4.3.1 The method is intended to determine the mono-ammonium phosphatecontent of a multipurpose chemical fife extinguishing agent which may containwacerproofing and fluidizing agents and other materials required for satisfactoryperformance. It is not applicable to products containing other alkali phosphatesor water alcohol soluble compounds which react with aqueous sodiumhydroxide.

4.3.2 Apparatus

Thefollowing apparatusshall be used:

.A = analytical balance.capable ofwei.ghingaccurately to 0.1 1118;

.B :: centrifuge tubes, lOQ-ml capacity preferablycone-shaped;

C = centrifuge;

D =steam bath, capable of maintaining approximately BOoC;

E = pH meter ortitrimeter;

F = burette. 5-ml capacity, graduated in 0.1 ml divisions. alkali-resistantstopcock; and

G = oven, vacuum, capable of operating in the range of 60°C.

43.3 Reagent grade chemicals shall be used, unless otherwise indicated. Othergrades may be used provided it is firstascertained that the reagent isof sufficientlyhigh purity to permit its use without lesseningthe accuracy of thedetermination:

A= absolute or denatured ethanol (a reagent blank is required. if denaturedalcohol is used);

B = 50% ethanol - Mix 1 volume of absolute ethanol (or appropriatevolume of denatured ethanol) with 1 volume of water; and

Amend No.2 to IS1~ : 1999

C =. ~9odiutn hYdtoxr&~ (1.0 m61ll)1" ~D~)vt· ~ td :,45· a~'<xl NaOH in onelitre of water. Standardize potentiometrically against primary standard

J"' .~U;Ill;acjdpb~~.'?~\ f " ~,i,. ", ~Jf~,~;,~~ .~~~'

4.3.4 Weigh to the he8rest ()..-!. tnt:apProximately 3 g of .sample; lmQ" ~ lOO-ml .centrifuge tube. Add SO ml of SO. percent ethanol and mix well. Support thecentrifuge tube in' a steam bath' set'at approximately 80° for about 5 min with

; ~~PeI'iO$ of vigClOlS shaking-, ' ,I

4.3.5 Place the warm tubes in wanned centrifuge tube holders am eentrifuge at,appOOmately 1 500 I rlminfa"· S miD.. Without r~Y decant the:~quantitatively (with h·aid ofa little.wat«} imoa·2S0-1Il1~er. 'Repeat the~ntwice IIKR transfeniDg ·the extracts to theoripnal 2SO-ml'~ or Wlit S8lp~ turnswhiteornatura1 colour. 'I ' •. t • • ( , '

, 4.3.6 Evapcrate theextracts todryress e.ta steam bath With ~ilid ofa~t of air,'I,; . I' ,.

4.3.7 Dissolve the dried residue in approximately 75-ml water and titratepotenti<metrically with the standardized NaOH solution using a pH meter txeViouslystandardized at pH 7.0. Add theNaOH in iIY;ranera of l.lml De¥ theequivalen£epoint (8.05). Pl<X pH readings versus ml of NaGH added and determine theequivalence pointas themidpOint of theinflection in thetitration curve (pH 8.05±0.02).

4.3.8 Calculate the mono-ammonium phosphate content, percent by mass, as follows:

_Ilt"\ A x B 50NH4Hg-v~ percent = W xII.

where

A = volume of NaOH used (corrected for any blank), in ml;

B = concentration of NaOH, in moVl; and

W= mass of sample as received, in g. , .

( Page 11,clause8-2.1, lint! 10 ) - Insert'~of base matlrial' afttr thewcrds 'free flowing' · ; 1\" ,

(CED22)Reprography Unit.BIS.New Delhi, lDdia

2

AMENDMENT NO. 3 APRIL 2005TO

IS 14609: 1999 DRY CHEMICAL POWDER FORFIGHTING A, B, C CLASS FIRES - SPECIFICATION

( Page 7, clause 4.12.1.1 ) - Insert the following after 'indoors':

'or put 8 feet high mild steel sheet enclosing 3 sides'

( Page7 t clause 4.12.1.1 ) - Add the following 'NOTE' at the end:

'NOTE - Provision has beenmade till infrastructure isdeveloped for indoortest facilities.'

( Page 10, clause 4.12.2.3, Note 2 ) - Substitute 'Halo carbon clean agent' for'Halon 1211'.

CED 22)Reprography Unit. BIS.New Delhi, India

AMENDMENT NO.4 AUGUST 2007TO

IS 14609: 1999 DRY CHEMICAL POWDERFOR FIGHTING A, B, C CLASS FIRES­

SPECIFICATION

(Page I, clause 4.3~jijjh line):

a) Substitute "minimum' for "more than' before 50 percent.

b) Delete last sentence 'The allowed -------- constituents.'

(CED 22)

Rcprographv Unu. IJIS. New Dcllu. InJI"

AMEND~NTNO.5NOVEMBER2008

TOIS 14609 : 1999 DRY CHEMICAL POWDER FOR

FIGHTING A, B, C CLASS FIRES ­SPECIFICATION

(Page I, clause 4.2) - Substitute 'The apparent density of the drychemical powder when determined by the method given in 4.2.1 shall be within:J:lOOIO of manufacturer's declared value in g/ml' for 'The apparent density.......... 1.10 g/ml'.

(Page 1, clause 4.4) - Substitute the following for existing:

'4.4 Particle Size Distribution

Percentage retained on 100 mesh sieve, 200 mesh sieve and 325 mesh sieveshall be within ±10010 of the manufacturer's declared value. Percentage retainedon 40 Mesh Sieve Bottom Pan to be deleted.

Procedure - The procedure for particle size distribution shall be as follows:

Apparatus - The apparatus shall comprise the following items:

c) Three sieves (100, 200 and 325 mesh) with a lid bottom pan.

d) Sieve-shaking device, capable ofholding sieves and moving the nest ina horizontal ellipse' with an impact from the bottom to the top of thenestcontinuously.

Test Procedure

Weight approximately 200 g of powder in to the top sieve. Assemble on theshaking device and shake for 10 min. Weigh the quantity ofpowder retained oneach sieve and report as percentage retained on each sieve.'

(Page 1, clause 4.5.1, line 4) - Substitute 'absorption docs not exceed 2.Spercent' for 'absorption does not exceed 1.5 percent'.

(CBD22)

R.epropaphy Unit, 81S,New Delhi,India

Fire Fighting Sectional Committee, CEO 22

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the FireFighting Sectional Committee had been approved by the Civil Engineering Division Council.

Fire fighting dry chemical powder meeting this standard is used in dry chemical powder fire extinguishers,fixed installations and mobile fire tenders for fighting classes A, B, C, fires. However, dry chemical powderfor fighting class Band C fire are covered under IS 4308: 1982 'Specification for dry powder for fire fighting(jirst revision)' and fire involving reactive metals that is, class 0 fires as also radioactive metals are separatelycovered under IS 4H61: 1984 'Specification for dry powder for fighting fires in burning metals (first revision), .

The efficiency of a dry chemical powder for extinguishment is governed by its physical properties and chemicalcomposition. Particle size of the powder is an important characteristic to determine its fire knock downproperties when used in extinguishers. Therefore fine and coarse powder particle must be balanced whilemanufacturing this powder. The dry chemical powder is generally composed of basically mono ammoniumphosphate or ammonium poly phosphate and ammonium sulphate mixtures with additives to make it waterrepellant, free flowing and conforming to various requirements of this standard. While selecting the variousraw materials for the manufacture of this dry chemical powder, it shall be ensured that these are non-toxic,non-corrosive, non-abrasive and electrically non-conductive.

In the following situations, the application of dry powder covered in this standard should not be consideredsatisfactory:

a) Fires involving chemicals-containing their own oxygen supply such as cellulose nitrate, etc.

b) Fires involving radio-active metals such as Radium, Uranium, Polonium, etc.

c) Areas where residual deposits of the powder may adversely affect electronic equipments or delicateelectrical relays.

This standard is formulated to provide guidance regarding selection of materials and requirements in regardto the quality of dry powder for other than in burning metals. The various tests for class A, B, C, firesincorporated in this standard are based on the studies conducted at the Defence Institute of Fire Research, .New Delhi and also taking into consideration the international standards such as ISO, EN, UL, etc.

The composition of the technical committee responsible for the formulation of this standard-is given at Annex C.

For the purpose of deciding whether a particular requirement of this standard is complied with the finalvalue, ohserved or calculated expressing the results of a test or analysis, shall be rounded off in accordancewith IS 2 : 1960 'Rules for rounding off numerical values (revised)', The number of significant places retainedin the rounded off value should be the same as that of the specified value in this standard.

IS 14609 1999

Indian Standard

DRY CHEMICAL POWDER FOR FIGHTINGA,B,C, CLASS FIRES - SPECIFICATION

1 SCOPE

This standard lays down the requirements of drypowder for use as extinguishing medium for fightingClass A, Band C fires.

2 NORMATIVE REFERENCES

The Indian Standards listed in Annex 1'\ containprovisions which through reference in this text,constitute provisions of this standard. At the time ofpublication, the editions indicated were valid. Allstandards are subject to revision, and parties toagreements based on this standard are encouragedto investigate the possibility of applying the mostrecent editions of the standards given at Annex A.

than 10, percent by mass of the extinguishing powder.However, the chemical content declared shall covermore than 50 percent of mono-ammonium phosphatepolyammonium phosphate of total composition of theextinguishing powder. The allowed tolerance shallnot exceed ±3 percent of the declared value forconstituents.

4.4 Particle Size Distribution

When tested asper IS 1607 the particle size distributionshall be as follows:

Base Characteristics

3 TYPES

The dry chemical powder shall be compatible withall types of foams covered under IS 4989 (Part 1,2 and 3). The test requirements for foam compatibilityarc given in 4.11.

4 QUALITATIVE REQUIREMENTS

Particle Size MinimumPercent Retained on

0.425 mm/40 mesh sieve0.150 rom/l00 mesh. sieve 20.075 mrn/200 mesh sieve 180.045 mm/325 mesh sieve 18Bottom pan 25

Maximum

o15283262

4.1 The sample of dry powder for testing shall bedrawn in such a manner that it represents the entirestrata of powder from any container and shall betested for properties mentioned in the followingclauses.

4.2 Apparent Density

The apparent density of the dry chemical powderwhen determined by the method given in 4.2.1 shallhe between 0.75 g/ml and 1.10 g/ml.

4.2.1 A sample of 100 + 0.1 g of the dry powdershall be placed in a clean. dry 250 ml stoppered glassgraduated measuring cylinder having an approximateheight of 320 mm and an approximate internal diameterof 40 mm. Secure the stopper in cylinder. Rotate thecylinder for ten complete revolutions, slowly at a rateof approximately 1 revolution every 2 seconds.Immediately after the ten revolutions have beencompleted, set the cylinder upright on a level surfaceand aJlow the powder to settle for 180 seconds. Readoff the volume occupied by the powder and calculatethe apparent density from the following equation:

Apparent density = lOO/(volume of powder)

4.3 Chemical Content

The declared chemical content of the dry chemicalpowder need not include constituent making' up less'

4.5 Hygroscopicity

4.5.1 A sample of dry chemical powder shall bedeemed to have met the requirement of hygroscopicityif the percentage gain in mass due to moistureabsorption does not exceed 1.5 percent.

4.5.2 Procedure

Take an aluminium or glass or .stainless steel madedish having a loosely fitting flanged lid. The dishshall have an internal diameter of 65 mm and depth15 mm. Clean, dry and weigh the dish alongwith itslid. Let it be called WI. Remove the lid, fill the dishwith the powder sample upto the top edge. gentlytap its bottom so that the level of the powder surfacefalls to 1mm to 2 mm below the top edge.Clean the outer surface of the dish. Cap the dishwith its lid and weigh accurately. Let this weightbe called W

2,

4.5.3 Exposure of the Sample to Humid AirAtmosphere

Remove the cover and place the dish holding powderon the round porcelain perforated plate kept in250 mm internal diameter desiccator having a saturatedsolution of ammonium chloride in its bottomcompartment. The desiccator lid shall have rubbercork through which two L-shaped glass tubes of

.6 rom internal diameter shall be passed to serve as

IS 14609 : 1999

air inlet and outlet. The air inlet glass tube shallterminate 20 mm above the centre of the glazedporcelain round plate .kept in the desiccator.

4.5.3.1 During exposure of the powder sample tohumid air a humidified air stream at the rate of5 IImin shall be continuously circulated/fed into thedesiccator. For the purpose of humidification of aircurrent, air coming out of an air rotameter shall befirst bubbled/passed through distilled water kept ina gas washing bottle of 200 ml capacity and the aircoming out of this bottle shall be passed through asaturated aqueous solution of ammonium chloridekept in another gas washing bottle of 200 ml capacity.The air thus humidified and coming out of the NH CIsolution shall be fed into desiccator in which drypowder sample is kept. The layout and generalarrangement of the moving air stream humidifyingapparatus to be used is shown in Fig.l.

4.5.4 In order to obtain reproducible results followinginstructions shall be strictly followed:

a) The humidification train specified in Fig.1shall be strictly adhered to.

b) It shall be ensured that throughout the durationof exposure of the sample the liquid levels ineach of the two gas wash bottles shall bemaintained between 80 to 100 mm above thebottom of the bubbler tube in the bottles.

c) A uniform flow rate of 5 l/min of air shallbe maintained.

d) A suitable device to monitor the relativehumidity of the air at the exit vent shall beinstalled and relative humidity shall bechecked from time to time.

e) The specified temperature range.

4.5.5 The sampJe of the dry powder held in the dishshall be exposed to moving humid air maintainedat 78 percent relative humidity and 27 ± 5°C for a

period of 48 h. At the end of this period take outthe dish, put on its lid and weigh accurately. Let thisweight be called W3• Determine the gain in mass andcalculate the percentage gain in mass due to moistureabsorption if any, that is, hygroscopicity using thefollowing equation:

H W3. - W2= x 100W2-.W.

where

H = Hygroscopicity (gain in mass), in percent.

WI = Mass of empty clean and dry dish withlid, in g.

W2 = Mass of covered dish with powdersample, in g.

~,= Mass of dish and lid with powder afterexposure, in g.

4.6 Hygroscopicity and Caking Test

4.6.1 Procedure

Separately weigh two numbers of clean, dry watchglasses marked A, B for distinguishment. Place about5 g of dry chemical powder in each of them andweigh each of them accurately to fourth place ofdecimal of gram. Also take 100 g of dry powder ina clean, dry glass beaker of 250 ml capacity. Thethree samples shall be placed on a perforated porcelainround plate kept in a desiccator jar containing saturatedsolution of ammonium chloride in water in the bottomcompartment so as to produce a humid atmosphereof 90 percent relative humidity in the desiccator. Thesamples in watch glasses shall be weighed after48 h to note the increase in weight. The weight ineach case should not increase by more than 1.5 percentat any stage. If this condition is satisfied, then thebeaker holding the powder sample shall be kept ina desiccator containing anhydrous calcium chloride

tAIR OUT

DESICCATOR

....1-----.... GLASSTUBING

SAT.NH4CI

SOLUTION

BOTTLEGAS WASH1NG

FIG. I MOVING AIR STREAM HUMIDIFYING ApPARATUS

TVGON TUBING

1

AIRIN

FLOWMETER

for 2 days and then in a desiccator containingammonium chloride saturated solution for 2 days andthis cycle should be repeated for 20 days. Observethe powder for formation of any cakes or lumps. Incase there is any caking or lump formation, allowthem to drop from a height of 100 mm on a smoothclean, dry glass sheet or some other hard surface.This lumps shall be friable to pass the requirementsof particle size distribution laid down in 4.4.

4.6.2 Resistance to Caking, Lumping and Hardnessof the Caking

A sample of dry chemical powder shall be deemedto have passed the test if the penetration of the needleis found more than 15 mm.

The resistance of the dry chemical powder to cakingand lumping shall be determined by preparing thesamples as described in 4.6.2.1 and using a suitablepenetrometer as specified in 4.6.2.2 and operatingit as per instructions contained in 4.6.2.3. Determinethe penetration distance three times at three non­collinear points across the surface of the dry powderfire extinguishing agent on each of the two samples.Determine the arithmetic mean and report the sameas the penetration distance.

4.6.2.1 Sample preparation

Place 125 g sample of powder in a nickel crucibleshaped cup of 100 ml capacity. The cup shall be64 mm deep and 60 mm in diameter at the rim.Similarly prepare another sample. Mount both the cupson a suitable sieve shaker in holders and subject thepowder to vibrations until there is no furthercompaction observed, but in any event for not lessthan 5 min.

Expose the samples to humid atmosphere by keepingthem in a moving air stream humidifier described in4.5 (see Fig. 1) at 27 ± 5°C and minimum 78 percentrelative humidity for 24 h, followed by drying for 24h hy keeping in a electric oven maintained at48 ± 3°C.

IS 14609 : 1999

NOTE-Stagnant air conditions found in the usual saturatedsolution desiccator compartments may not give consistentresults and precautions shall be taken to ensure air circulationif a desiccator is used as the humidifier. A 250 rom internaldiameter desiccator with a saturated Ammonium Chloridesolution in the lower compartment may be used in thisdetennination. During the test, circulate air at 5 IImin. Pre­saturate the air by bubbling through distilled water and thenthrougha saturated AmmoniumChloride solution and introduceinto the desiccator of 6 mm, terminating 20 mm above thecentre in the desiccatorporcelain round plate. Check therelativehumidity of the exit air stream from time to time using someconvenient means.

4.6.2.2 Equipment

The penetration apparatus consists of a penetrometer(see Fig 2) with a needle in a holder (spindle) ableto move vertically without measurable friction andcapable of indicating the depth of penetration to thenearest 0.1 mm. The mass of the spindle shall be47.5 ± 0.05 g and the total mass of needle and spindleassembly 50.0 ± 0.05 g.

The needle shall be made of fully hardenedand tempered stainless steel. It shall be approximately50 mm in length and 1.02 mm in diameter,symmetrically tapered at one end by grinding to acone having an angle between 8.70 and 9.70 forthe entire cone length. The cone shall be coaxialwith the straight body of the needle. The total axialvariation of the intersection between the conical andstraight surfaces shall not exceed 0.2 mm. Thetruncated tip of the cone shall be within the diameterlimits of 0.14 and 0.16 mm and square to the needleaxis within 2°. The entire edge of the truncatedsurface at the tip shall be sharp and free of burrs. Thesurface roughness height of the tapered cone surfaceshall be 0.2 to 0.3 microns arithmetic average. Theneedle shall be mounted in a stainless steel ferruleand the exposed length being between 40 and 45 mrn.The ferrule shall be 3.2 ± 0.05 mm in diameter and38 ± 1 mm in length. The needle shall be rigidlymounted in the ferrule. The mass of the ferrule needleassembly shall be 2.50 ± 0.05 g.

t( N08 TO ~E T DIALAT ZfRO

FIG. 3 TEsT ARRANGEMENT FOR HYGROSCOPICITYAND CAKING TEsT

[I, .. --..----FINE ADJUSTMENtSCREW

SPINDLE .--------

~~~......-- SPIRIT LEVEL

FIG. 2 PENETROMETER

3

CIRCULAR--....DIAL

GRADUATED

N£EOl6

SAMPLE --+--~-4----"_CUP

SAMPlfCUP PLATf

SAMPLETU8

IS 14609 : 1999

4.6.2.2.1 Penetrometer

It is designed to measure in mm and tenths of amillimetre the permanently fixed in a brass ferrulewhich in turn is held at the lower end of a verticallymovable spindle which is made to fall freely withoutfriction under the gravitational force into dry chemicalpowder held in a cup that has been compacted andexposed to humid atmosphere followed by drying asspecified.

Before letting the spindle fall down, it is held in staticposition in a guide against a spring loaded button.In order to let the assembly of needle, ferrule andspindle fall down the spring loaded button has to bepressed and kept pressed for 5 seconds. Thepenetration, that is, the distance the spindle, needleand ferrule assembly has travelled down is manuallymeasured by using a movable rack and fixed pinionarrangement having a pointer fixed on the axle ofthe pinion. This pointer is fixed at the centre of acircular graduated dial.

When the upper end of the vertical rack is manuallypressed, the pointer rotates over a circular dial havingequal divisions graduated from 0 to 400.

4.6.2.3 Operating instructions for penetrometer

the arm and rotate the fine movement adjustmentscrew provided on the right side of the arc shapedann. '

By moving the fine movement screw systemattached to the arm in anti-clockwise direction,the needle gets lowered and vice versa, that is,by moving the fine movement screw theclockwise direction the level of needle goes up.Adjust the fine movement screw till the truncatedtip of the needle just touches the upper surfaceof the caked powder sample held in the cup.

j) Now press the spring loaded button for 5 secondsto release the assembly of needle, ferrule andspindle and let this assembly of needle, ferruleand spindle fall freely under the earth'sgravitational pull. It is essential that this fallof needle should take place ~ithout friction.

k) After releasing the button when the downwardmovement of needle and spindle assembly stops.Note the distance the needle has penetrated intothe dry powder sample as read on the dial bymanually pressing with thumb at the upper endof the square ended rack till the lower end ofthe rack touches the upper flat end of the spindle.

4.7 Water Repellency Test

4.8 Moisture Content

4.7.1 Procedure

The moisture content shall not exceed 0.25 percent(m1m).

x 100M=

4.8.1 In an atmosphere of 50 ± 5 percent relativehumidity, and a temperature of 27 ± 5°C, place asample of approximately 50 g into a tared aluminiummoisture foil having 65 rom diameter and 15 mmdepth and weigh accurately. Place the dish holdingpowder sample in a desiccator using 95 to 98 percentby mass reagent grade sulphuric acid as a dryingagent. Maintain the closed desiccator and contentsat a temperature of 21 ± SoC for 24 h. At the endof this timet remove the test sample and weighaccurately. Calculate the moisture content of thesample from the following equation:

Dry powder weighing 50 g shall be placed in a taredbeaker and gradually filled with 50 ml of distilledwater. After 2 min, the dry powder and the waterfrom the beaker shall be gently poured out and thebeaker with wet powder, if any sticking to the beakerdried in an oven at 60°C for 2 h and then cooledin a desiccator containing anhydrous calcium chloridefor 1 h. The beaker shall then be weighed and theweight of dry residue calculated. The increase in theweight of the beaker due to powder residue stickingto the beaker shall not exceed 0.75 g, that is, 1.5percent.

a) Note that the needle made of stainless steel isrigidly and permanently fixed in a brass rodcalled ferrule.

b) Loosen the screw provided on the lower endof the spindle. Insert the brass ferrule of thepenetration needle into the needle holder calledspindle and tighten the screw so that needlemay not come out during measurements.

c) Level the penetrometer by suitably rotating thethree levelling screws provided on the base andseeing the air bubble of the spirit level providedon the base so that air bubble should rest inthe centre of the spirit level.

d) By keeping the button pressed manually raisethe spindle, that is, the needle holder with needleand ferrule assembly till the upper flat end ofthe spindle touches the lower end of the rackmade of square rod of brass.

e) Loosen the small knob provided on the left ofthe graduated circular dial and manually slidingit up or down and tightening, that is, bymanipulating the screw set the dial such thatpointer reads 400 (or zero).

f) Keep the cup holding the caked sample powderon the base of the penetrometer in the centre.

g) Holding the arc shaped arm loosen the L-shapedholt. Now lower the arc shaped arm (spindleand needle assembly) till the truncated tip ofthe needle remains say 10 mm above the surfaceof the dry powder. Now screw up the L-shapedbolt.

h) Loosen the screw provided on the left side of

4.

4.9 Heat Resistance Test

Mass of sample, in grams, after 24 hdrying.

where

M = Moisture content, in percent;

WI = Original mass of sample, in g; and

W2 =

The dry powder sarnple weighing 150 ± 2 g shallbe placed in a tinned steel cup having 75 rom diameterand 50 mm depth provided with a closely fittingflanged cover/lid. The lidded cup holding the powdershall then be placed in a thermostatically controlledoven maintained at a temperature of 60 ±2°C for aweek. The sample shall then be cooled down andexamined for caking or lumps formation. The lumpsor cakes, when dropped from a height of 100 mmon a smooth glass surface of some other hard surface,shall he friable to pass the requirement of particlesize distribution laid down in 4.4.

NOTE - Meeting of this requirement ensures that the drypowder is thermally stable and shall not decompose in normalambient extreme temperature. Also it ensure that none of itsadditives shall Inch at an elevated temperature of 6cr>c. If itis not so the powder shall be rendered non-effecti veextinguishing agent when used in extinguisher(s) kept inlocations having higher temperatures such as boiler rooms, andnear pipes carrying hot chemicals, steam, etc, in industries.

4.10 Free Flowing Characteristics (EfficientFluidity)

IS 14609 : 1999

Erlenmeyer flask is inverted over the horizontal oneand the rubber tube is slipped over so that it coversthe neck. The purpose of rubber tube is to hold thetwo flasks. A suitable apparatus is shown in Fig. 4.

4.10.3 Procedure

This assembly is held vertically by their necks ina suitable stand. The assembly of the two flasks isthen turned/rotated by 180· and kept held in thisposition, till all the powder moves/flows down to the

'lower flask. In this process some aeration of thepowder sample takes place. As soon as the entirequantity of powder falls into the lower flask, theassembly is immediately again turned 1800 and heldin this position. In this way the process of aerationis continued and repeated so that in all aeration isdone only ten times. Note that this aeration is to bedone in quick succession without stopping in betweenconsecutive aeration.

Immediately after the tenth run is over themeasurement of fluidity is commenced by recordingthe period required for the powder to flow throughcompletely. In quick succession total ten measu­rements are carried out. The arithmetic mean timeIt' of these timings is calculated. Then the rate offlow, that is, fluidity of powder is calculated bydividing the quantity 500 g by mean time It' seconds.

The sample of the powder is deemed to have passedthe requirement of fluidity if the rate of flow is notbelow 50 g/s.

FIG.4 ARRANGEMPNT OF EQUIPMENT FOR FREEFLOWING CHARACTERISTICS

4.10.1 A dry chemical powder having howsoevergood fire inhibitory property when used inextinguishers 111ay be rendered ineffective if it doesnot now in pipes satisfactorily.

Dry powders are generally filled in extinguisherbodies whether portable or wheeled units or in fixedinstallations or in special dry chemical powdertenders. Moisture free compressed gases likenitrogen, carbon dioxide or air are generally usedto drive out the powder. In doing so the powderis required to flow through metal pipes, bends, rubberflexible hoses, etc. If the powder has less mobilityit can not be dri ven out satisfactorily hence can notbe projected on fire. .

In the design of good extinguishers an effort is madeto loosen or aerate the powder before its finding wayinto the discharge pipes and fittings, etc, so that anon-pulsating jet of power is obtained.

4.10.2 Equipment

The device consists of two numbers of Erlenmeyerglass conical flasks each of 1 000 ml capacity. Oneflask is inverted over the other such that they meetmouth to mouth. A clean, dry flask holding a knownmass of powder 500 g under test is kept horizontal.A rubber tube is put on its neck. A dish made outof I rum thick stainless steel sheet and having aconcentric aperture of 26 mm diameter is fixedhorizontally in to the neck. A similar clean, dry

5

EAlENMEV£RFLA5ICS -­500,c

RU8BERCOllAR

@1~t~1-1~

APERTURE

/ '0~--- .250=--'-'--"-'..

All dimensions in millimetres.

21S 325

I

503

4.11.2 Procedure

4.11.1 Equipment

IS 14609 : 1999

4.11 Foam Compatibility

p) Above the platform of the butterfly valve ofthe puffer chamber.

By operating the puffer chamber at276 kN/m2 (40 psi) apply the powder on theburning tray. This makes the fuel surface hotand powder particles remain on exposedsurface of fuel. The fire.mayor may not goout.

c) Keep foam generating arrangement ready. Thepressure vessel is to be charged with apremixed solution ofprotein foam concentrateconforming to IS 4989 (Part 1) at 4 percentconcentration{vlv) in clean potable water.

d) Pour 3 I of n-heptane into the fire tray holdingwater layer.

j) Thirty seconds after the completion of foamapplication, open the gas line and ignite theLPG bubbling out of the foam blanket fromthe sparge pipe. Immediately start notingdown the time period required for completearea of tray to be involved into flames. Letthis time be called T

Iseconds.

NOTE - Throughout the test LPG gas supply is to bemaintained at full throttle.

k) Extinguish the fire. Let the tray cool down.

q) Immediately apply foam for }o. s as donepreviously in steps (c) and (0.

r) Now repeat steps from (g) to (j).

e) Ignite the fuel and let it bum freely for 10 s.

f) Using a suitable goose neck fitted on thefoam making branch pipe apply foam intothe tray on fire for lOs.

g) Start a stop watch.

h) Meanwhile, immediately connect thedomestic LPG gas line to the free end of thesparge pipe.

m) Repeat the procedure as given above fromstep (a) to (e).

n) Put 60 g of the dry chemical powder sampleunder test.

510

10 6·35 GAS PIP EWITH SEVEN HOLESOF ';2'0

The equipment shall consist of the following:

a) A foam making branch pipe having waterdischarge capacity of 7.5 Ymin at 7 kgf/cm 2

pressure connected to a pressure vesselthrough a flexible rubber hose on one side.The pressure vessel is to be pressurized withthe help of an air compressor as shown inFig. 3 of IS 4989 (Part 1).

b) A fire tray made out of 3 mm thick mildsteel sheet, with all welded, leak proofconstruction. The tray shall be kept on a standand shall have a sparged pipe of stainlesssteel fitted on one side as shown in Fig. 5.The sparged pipe shall have a spigot madeon the free end so that the LPG rubber tubingmay be easily and securely connected to it.

c) A domestic LPG gas cylinder fitted withregulator and rubber tube.

d) A suitable torch to set petrol, LPG on fire.

The following procedure shall be followed:

a) Keep the fire tray measuring 60 cm length,25 em breadth and 20 cm height on a68 em high stand as shown in Fig. 5. Thetray should be clean and ensure that noneof the holes made in the sparge pipe areclogged.

b) Pour 8 I of clean potable water into the tray.so that the sparge pipe gets submerged.

~~"\)2

~

ANGLE IRON

All dimensions in rnillimetres.

FIG. 5 TRAY WITH STAND

s) Record the time taken for involvement ofcomplete area of tray into flames. Let thistime be T

2seconds.

A dry powder sample shall be deemedcompatible with the foam sample withwhich it is tested if T

2is not less than one

half of TI•

NOTE - For application of foam into tray the operatorshould wear fire protective hand gloves and faceshield and use a suitable/goose neck on the foam makingnozzle.

6

4.12 Fire Knocking Down Properties

4.12.1 Procedure for Class A Fire

Extinguishing powder suitable for Class A Fire shallextinguish the test fire described below. The generalarrangements shall be as shown in Fig. 6 and Fig. 7.

4.12.1.1 Location and ambient conditions

Carry out the tests indoors, sheltered from draughtslwinds, which does not impede the natural developmentof the test fire or effective fire fighting.

WOOD CRIB 13LAVERS EACHCOMPRISING 6 STICKS

63 • 38 nYI'ISTEEL ANGLESUPPORTS 405 mmHlGH CONCRETEBLOCKS

FIG. 6 SET-UP FOR CLASS ~A' TEST FIRE OF

A,B,C, DRy CHEMICAL POWDER

IS 14609 1999

4.12.1.2 Test fire construction

The test fire shall consist of a crib of wooden sticksconstructed on two 63 mm x 63 mm angle irons orother similar and appropriate supports, placed onconcrete blocks having square cross section of300 mm x 300 mm so that the height of the supportsabove the flour is 405 rom. The sticks forming theoutside edges of the crib shall stapled or nailed togetherto provide strength to the crib.

Use wood sticks of species, sub-species or hybridsof the general Pinus, Picea or Abies or the speciesCryptomeria, Japonica or kail (local Indian name)in the form of sticks of square cross section withsides of 38+~1 mm and 651 ± 10 mm long, with amoisture content of 9 to 13 percent (mass/mass) anda density of 500 ± 50 kg/m'.

Stack the wooden sticks in 13 layers with 6 sticksin each layer. Stack each layer of sticks at rightangles to the layer below. Stack individual sticks oneach layer with even spacing and in the form of asquare with sides equal to the stick length as shownin Fig. 6.

4.12.1.3 Ignition

Take a lighting tray made of mild steel sheet andhaving all welded, leak proof construction and havingsquare shape with each side 686 mm. The tray shallbe 102 mm deep. Place this tray centrally andsymmetrically under the crib. Pour 5 I of water andthen 3.8 1 of n-heptane into the tray. Ignite the fuel.Wait till the entire quantity of fuel is burnt out.Remove the tray once the liquid fuel has beenconsumed. Allow the crib to bum until the sticksin the top row have unburnt core. diameters of 19to 25 nun before applying the extinguisher to the fire.

4.12.1.4 Description of extinguisher for fire knockdown test ofA,B, C, dry powder on class 'A'fire (woodcrib)

PRESSUREGAUGE 0- 21kgf/c m

2

L.C.a. 0-5 kgf lem ~

OCPSAMPLE

RELIEFVALVE

PRESSUREGAUGE

AIR COMPRE SSOR

o

FIG. 7 SCHEMATIC VIEW OF A,B,C, DRY POWDER FiRE KNOCK DOWN TEST ARRANGEMENTON WOOD CRIB FIRE

7

PUFFERCHAMJtER

10 6'4:tO~1AIR SUPPLY TUBE

BRAZED ORWELDED FLUSH

PUFFER CHAMBERREST STANO

b) Unscrew the cap and remove it. Ensure thatthe rubber gasket/washer is there seated inthe recess made in the cap.

c) Empty the extinguisher and clean it.(Caution : Do not use water to clean).

d) Screw up the cap and tighten it. Turn off thepressure release valve and purge theextinguisher system with moisture freecompressed air. Continue purging till onlyair is seen coming out from the dry powderdischarge nozzle.

e) Now, stop compressed air supply and releasethe pressure by operating pressure releasevalve.

f) Open up the cap by unscrewing it.

g) Charge/fill the extinguisher body with 4 kgof A,B,C, dry chemical powder sample undertest.

h) Screw up and completely tighten the gunmetal cap.

j) Switch on the air compressor and build upa pressure of minimum 14 kgf/cm! in thecompressor air tank.

k) Pressurize the extinguisher system to10 kgf/crn".

The system is now ready for application ofdry powder on Class 'A' fire.

NOTE - During the application of powder on tire keepcompressed air supply on and keep the operation leverof the squeeze grip nozzle fully pressed intermittentdischarge throughout the entire duration of the fire test.

4.12.1.6 Method of application

Apply the discharge of the extinguisher to the testfire, initially to the front and from a distance of notless than 1.8 )ll. Reduce the distance of attack andapply the discharge to the top, bottom, front or eithersides but not the back of the crib. Maintain all devicesfor controlling the flow of the powder in the positionfor maximum discharge.

PRESSUREGAUGE

\FIRE PAN

a) Its CO2

gas cartridge is removed.

b) In the dome portion at a point diametricallyopposite to the discharge elbow a hole isBlade on which an elbow is welded to serveas an air-inlet point. This elbow is connectedto a tee connection. On the tee connectionan air pressure gauge of range 0 to21 kgf/cm! and least count of 0.5 kgf/cm'is screwed up. The free end of the tee isconnected to a nipple which is connected toanother tee. One end of the tee is connectedto a pressure release valve and the other endof the tee is connected to a flexible highpressure rubber hose pipe having 12 mmnominal bore. The free end of the hose pipeis connected to a suitable moisture trap whichin turn is connected to an electrically operatedair compressor capable of supplyingcompressed air at 10 kgf/cm? continuouslyfor 10 min.

c) Instead of the normal discharge hose pipeusually connected to the syphon pipe, a3 m length of high pressure flexible hose pipeof rubber is connected. This discharge hosehas a nominal bore of 12 mm. At the freeend of the hose fitted on discharge side, asuitable squeeze grip type or quarter turnvalue dry powder nozzle having a dischargerate of V2 kg/s at 10 kgf/cm? pressure isfitted. This nozzle and the design of thedischarge mechanism shall be such as toobtain a non-pulsating continuous dischargeof powder in jet form. The whole systemshall wi thstand a pressure of 25 kgf/cm? andshall be air leak tight.

IS 14609 : 1999

For this test an extinguisher having gun metal wheeltype cap of 5 kg nominal capacity of dry chemicalpowder, conforming to IS 2171 is modified as under:

4.12.1.5 Method of charging

a) By operating pressure release valve, releasethe pressure if any present in the extinguisher.

BASE MADE OF

:'E"~~O~.?2lfO WITHAll dimensions in millimetres.

FIG. 8 GENERAL ARRANGEMENT OF EQUIPMENT FOR FIRE TEsT

8

4.12.1.7 Condition for successful extinction.

For the test to be successful, all flames shall beextinguished and the crib shall be in a state whichwill not be subject to self-ignition or continue tosmoulder under the conditions of the test for a periodof 14 min.

4.12.2 Procedure for Class B Fire

4.12.2.1 Equipment

The equipment shall consist of the following:

a) An air compressor.

b) An air pressure regulator and moisture trap(to eliminate moisture from compressed air)suitably mounted on a stand.

c) Weighing scales, weights and a plastic orstainless steel spoon.

d) A stop watch.

e) A small torch and match box.

f) Stainless steel fire pan, as shown in Fig. 9.

g) Stainless steel fire pan cover, made of asbestossheet.

h) A puffer chamber made out of stainless steelsheet mounted on a stand, as shown in Fig.lO.

j) A graduated glass measuring cylinder ofone litre capacity.

4.12.2.2 Fuel

600 ml of normal heptane.

4.12.2.3 Procedure

a) Arrange the equipment as shown in Fig. 8on aIm high table provided with a non­combustible top, kept in a draught free roomor enclosure fitted with exhaust fan(s) to ventout smoke when the test is over.

b) Connect the puffer chamber to compressedair reservoir using, a high pressure rubberhose line through an air pressure reducer­cum-regulator and a moisture trap.

IS 14609 : 1999

c) With the puffer chamber valve shut, regulatethe pressure of compressed air till the pressureof the moisture free compressed air is set at2.8 kN/m2•

d) Fill the outer area of the semielleptical shapedfire pan up to 2 mm below the edges withclean potable water.

e) Next, pour 5 I of water into the inner areaof the fire pan.

f) Weigh 30 ±1 g of the sample powder. Weigh5 of such samples.

g) Remove the cap kept on the cylindricalstainless steel pipe embodying the butterflyvalve. Pour this mass of powder into the pipeprovided so as to place the powder on to theplatform of the spring loaded butterfly valvein closed position of the puffer chamber.Replace the cap.

h) Gently pour 600 ml of n-heptane as fuel overwater container in the inner area of the firepan taking care that no fuel is splashed intothe outer area. The level of water is to beadjusted in the inner area such that top layerof the fuel is about 2 mm below the frontedge. Due care is to be exercised whilepouring fuel to avoid splashing of the fuelinto the outer area to avoid conditionsresulting in inconsistent fires or fires in theouter area and consequently inconsistentresults.

j) Ignite the fuel and simultaneously start thestop watch and let the fuel bum freely forlOs. As soon as to s are over, simultaneouslyfully tum the butterfly valve in anti-clockwisedirection so as to open the valve. Also operatethe pet cock/stop cock provided on thecompressed air line so as to let compressedair line open and sample powder falling onthe puffer chamber inner plate get introducedinstantly into the air stream which is deliveredon the fire in the form of a dry powder cloudor dry powder puff over the flames whichsweeps out the burning flames to causeextinction of fire.

Conduct the test five times out of which the

CAP

.1-4*0-1DRILLED HOLE

(ORIFICE)

All dimensions in millimetres.

NOTE - Permissible deviation :to.S.FIG. 10~ CHAMBER4STAINlSS STEEL SHFEf 1.6 mm)

T,

All dimensions in millimetres.FIG. 9 FIRE PAN (STAINLESS STEEL SHEET 2.24 mm)

9

IS 14609 : 1999

sample powder must extinguish the flre fourtimes. If extinction is achieved in the first fourtests the fifth one need not be carried out.

NOTES1 This test must be done in a room or enclosure where thewind does not disturb the tire.2 A suitable Halon I 211 extinguisher or CO2 extinguisheror DC. P. extinguisher or AFFF stored pressure mechanicalfoam extinguishermust be kept in attendance to meet any fireout-break exigency arising due to non-extinction of fire orother reasons.3 To obtain repeatable results the fire pan must be allowedto cool down before repeating the test.

4.12.2.4 Precautions

Following precautions shall be taken during the test:

a) The distance between .the lower edge of theoutlet of puffer chamber and the nearest edgeof the fire pan is of critical importance andshould be maintained as shown in Fig. 8.

b) The angle at which puffer chamber rests onthe stand is also of critical importance.

4.12.3 Procedure for Class C Fire

4.12.3.1 Any powder meeting the requirements ofClass B fire test as described in 4.12.2, in additionbe deemed to possess the potential for colour achievingan adequate performance on Class 'C' fires, that is,fires involving gases.

4.13 Colour

A,B,C powder shall be of pale yellow colour.

5 GUIDANCE NOTES

a) All extinguishing powder must be safe foruse on live electrical equipment, and mustnot contain any electrically conductivematerial.

b) The various materials and additives used toproduce extinguishing powders shall begenerally recognized as being non-toxic tohumans.

c) The discharge of large amounts of drychemical powder may create hazards topersonnel in the vicinity such as reducedvisibility and temporary breathing difficulty.

d) Mono-ammonium phosphate and potassiumchloride are slightly acidic, and in the presenceof moisture, they can corrode metals such assteel, cast iron and aluminium.

e) Potassium bicarbonate, sodium bicarbonateand urea based potassium bicarbonate areslightly basic, and in the presence of moisturethey can corrode metals such,as. aluminium,aluminium bronze and titanium.

f) However, prompt clean up, if done, can avoid

10

such corrosion. Mono-ammonium phosphatebased agent will require same scraping andwashing if exposed surfaces were hot whenthe agent was applied.

g) Multipurpose dry chemical powder shall notbe considered satisfactory for use onmachinery such as carding equipment intextile operations and delicate electricalequipment, because. upon exposure totemperatures in excess of I21OC, or relativehumidity in excess of 50 percent, depositswill be formed which may be corrosive,conductive of electricity and difficult toremove.

.6 SAMPLING AND CRITERIA FORCONFORMITY

The details of the sampling and criteria for conformityare given in Annex B.

7 PACKING

7.1 The powder shall be packed in hermetically sealedmoisture proof plastic bags or containers lined withplastic, in the quantities 1, 2, 5, 10 and 25 kg.

7.1.1 The strength of the container used shall be suchthat no distortion or failure of the' container shalloccur when it is kept on a flat surface on any ofits sides/ends and a weight of 10 kg is applied toit. The container shall not disintegrate to any extentwhen dropped from a height of 1 m on a concretesurface after being packed.

7.2 The powder of quantity 50 kg shall be packedin jute bag conforming to IS 7406 (Part 2).

8 MARKING

8.1 Each pack containing dry powder shall be labelledwith the following information:

a) Manufacturer's name or trade-mark.

b) Quantity of the powder in kilograms.

c) Type : Foam Compatible.

d) Date of manufacture/Batch No.

e) Class of fire, that is, A, B, C.

8.1.1 BIS Certification Marking

The packing may also be marked with the StandardMark.

8.1.1.1 The use of the Standard Mark is governedby the provisions of the Bureau of Indian StandardsAct, 1986 and the Rules and Regulations madethereunder.Detailsof conditions under which a licencefor the use of the Standard Mark may be grantedto manufac.turers or producers may be obtained fromthe Bureau of Indian Standards.

IS 14609 : 1999

ANNEX A(Clause 2)

LIST OF REFERRED INDIAN STANDARDS

IS No. Title IS No. Title

1607 : 1977 Methods for test sieving (firstrevision)

(Part 1): 1985 Protein foam (second revision)

4308 : 1982

4861 : 1984

4905 : 1968

4989

Specification for dry powder forfire fighting (first revision)

Specification for dry powder forfighting fires in burning metals(first revision)

Methods for random sampling

Specification for foam concentrate(compound) for producing mech­anical foam for fire fighting:

(Part 2) : 1984 Aqueous film formingfoam (AFFF)

(Part 3): 1987 Fluoro protein foam

7406 Specification for jute bags for(Part 2) : 1986 packing fertilizers : Part 2 Lami­

nated bags manufactured from 380g/rn"; 68 x 39 tarpaulin fabric (firstrevision)

ANNEX B(Clause 6)

SAMPLING PROCEDURE FOR DRY CHEMICAL POWDER FOR FIGHTINGA,B,C, CLASS FIRES

B-l.1 Lot

8-1 SCALE OF SAMPLING

Table 1 Scale of Sampling(Clause B-1.2)

B-l.2.1 These containers shall be selected from thelot at random. In order to ensure the randomness ofselection, procedures given in IS 4905 may befollowed.

B-2 NUMBER OF TESTS AND CRITERIA FORCONFORMITY

8-2.1 Draw with an appropriate sampling instrumenta small portion of the material from different partsof each selected container. Thoroughly mix all portionsof the material drawn from the same container. Thetotal quantity of the material drawn from eachcontainer shall be sufficient to conduct all the testsgiven under 4. The material from each of the containerso selected, shall be subjected to the tests for apparentdensity, particle size distribution, water repellencyand free flowing. The lot shall be considered asconforming to these requirements if all the samplesmeet the requirements.

8-2.2 For the tests for hygroscopicity and caking andheat test, a composite sample shall be made of takingsmall but equal quantity of material from each ofthe selected containers and one test shall be carriedout for each requirements. The lot shall be consideredas conforming to these requirements if a sample passesin both the requirements.

B-2.3 The fire test and foam compatibility test(applicable only to foam compatibility type) shallalso be carried out on the composite sample. Threesamples shall be tested for Class B fire. Howeverfor Class A only one test shall be carried out. Thelot shall be considered as conforming to therequirements of fire test if at least two samplescompletely extinguish the fire. For foam compatibility,two samples shall be tested. The lot shall beconsideredas conforming to the requirements of this test if boththe samples pass.

34

5

6

7

Sample Size(2)

Lot Size(I)

Up to 5051 to 100

101 to 150

151 to 300

30 I and above

All the containers in a single consignment of thematerial of the same type drawn from a single batchof manufacture, shall constitute a lot.

D-t.2 The samples shall be tested from each lot forascertaining the conformity of the material to therequirements of the specification. The number ofcontainers to be selected from each lot shall dependupon the size of the lot and shall be in accordancewith col 1 and 2 of Table 1.

] 1

IS 14609 1999

ANNEX C(Foreword)

COMMITTEE COMPOSITION

Fire Fighting Sectional Committee, CED 22

Chairman

SHRI OM PRAKASH (FIRE ADVISER)

Members

SIIRI D. K. SHAMI

DR NAVINCHANDRA JAIN

SHRI P. N. SE"rnNA'

SURJ N. T. PANJWANI tAltermue)

StiRI SHIV NATH

SHRI P. GANESHAN (Altematev

SHRI P. K. CHATIERJEE

SHRI H. S. KAPARWAN (Alttrnclte)

SHRJ K. P. SHARMA

Assn SECURITY COMMISSIONER (FIRE) (Alternate)

SHRI M. GANGARAJU

SHRI V. K. VERMA (Alternate)

SHRI S. K. DHERI

StlRJ R. C. SHARMA iAltemate)

SHRI V. L. N. RAO

LT-COL S. K. MARKANDEY (Alternate)

S.IRJ P. A. DUBEY

SHRI NARlNDER KUMAR

FIRE AUVISER

SURJ S. C. RAY (Alternate)

SHRI J. N. VAKIL

SURJ K. RAVJ (Alternate)

DIRECTOR

DEPUTY DIRECTOR (Alternate)

DR T. P. SHARMA

DR A. K. GUPTA (Alt~rnate)

SURI B. PATHAK

MANAGrNG DIRECTOR

TECHNlCAL ExECUTIVE (Alternate)

SHRI P. S. BUANDARI

SHRI D. R. YADAV (Altern"te)

PRESIDENT

GENERAL SECRETARY (Allernate)

SURI S. N. KUNDU

SHRJ P. KHANNA

Representing

Ministry of Home Affairs, New Delhi

Ministry of Home Affairs, New Delhi

Government of Maharashtra, Mumbai

Kooverji Devshi & Co (P) Ltd, Mumbai

Steelage Industries Ltd, ChennailDeIhi

Ministry of Defence, Delhi

Railway Board, Delhi

Directorate General of Supplies & Disposals, Pune

Delhi Fire Service, Delhi

Controllerate of Quality Assurance, Pune

Design & Consultancy, CME Campus, Pune

Engineer-in-Chiers Branch, New Delhi

Defence Research & Development Organization, Delhi

Tariff Advisory Committee. Ahmadabad

Home Department (Fire Service), Chennai

Central Building Research Institute (CSIR), Roorkee

West Bengal Fire Service, Calcutta

Avon Services Pvt Ltd, Murnbai

Central Industrial Security Force, New Delhi.The Institution of Fire Engineers (India), Delhi

Fire & Safety Appliances Co, Calcutta

Jaya Shri Textiles, Delhi

(Continued (1ft pug~ 13)

12

(Continued from paRe 12)

Members

DIRECTOR OF EQUIPMENT

SENIOR FIRE OFFICER (Alternate)

SHRJ C. P. GOSAIN

SHRJ P. N. GHOSH

SHRI B. J. SHAH

SHRI A. M. SHAH (Alternate)

SHRI V. V. RAO

St-IU G. V. SAWANT (Alternate)

SHRJ T. YOOESWARA

SHRI JOHN TAKEY (Alternate)

SHRl SURESH BABU

SHRJ D. N. SINGH (Alternate)

SHRI R. P. SAXENA

SHRJ NEERAJ SHARMA (Alternate)

SHRI SWARANJIT SEN

DEPtTfY DIRECTOR (Alternate)

SHRI TARIT SUR

StiRl D. NEOCJI (AlterntJfe)

SHRI HARISH SALOT

SUR! RAMESH R. DHOBLEY

SURI S. M. DESAI

SHRI G. B. MENON

SHRJ ASHOK SHARMA

SHRJ A. K. NANDI (A.lurllate)

MANAGING DIRECTOR

SHR( P. N. PANCHAL

SURI VINOD KUMAR,

Director (Civ Engg)

IS 14609 1999

Representing

National Airport Authority, New Delhi

Central Public Works Depatment, New Delhi

In personal capacity (1-1916 Chiuaranjan Park, New Delhi)

Newage Industries, Gujarat

Bombay Fire Brigade, Mumbai

Steel Authority of India Ltd, Rourkela

Steel Authority of India Ltd, Dhanbad

Oil & Natural Gas Commission, Dehra Dun

Home (Police Department), Government of Andhra Pradesh, Hyderabad

Surex Production & Sales Pvt Ltd. Calcutta

Vijay Fire Protection Systems Pvt Ltd, Mumbai

Bhabha Atomic Research Centre, Mumbai

Eureka Firetech Pvt Ltd, Mumbai

In personal capacity iHouse No. 33/238 A-5 Puzhakkara Padam Yennal,Cochin)

Mather & Platt (India) Ltd, Mumbai

Loss Prevention Association of India, Mumabi

In personal capacity (Flat No. 46 8/0(;k £-1, Pocur II. Sector 15. Rohini.D~lhi)

Director General. DIS (Ex-officio Member)

Member-SecretarySHRI SANJEEV CHAruRVEDI

Joint Director (Civ Engg), BIS

13

Bureau orlDdIa. Standards

BIS is a statutory institution established under tbe Bureau of Indian Standards Act, 1986 to promoteharmonious development of tbe activities of standardization, marking and quality certification of goods andattending to connected matters in thecountry.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publication), BIS..

Review of Indian Standards

Amendments arc issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issueof 'BIS Handbook' and 'Standards Monthly Additions'

This Indian Standard has been developed from Doc: No. CED 22 (5272).

Amendments Issued Since Publication

Amend No. Text Affected

BUREAU OF INDIAN STANDARDSHeadquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002Telephones: 32301 31, 323 3375,323 9402

Regional Offices:

Central : Manak Bhavan, 9 Bahadur Shah Zafar MargNEW DELHI 110002

Eastern : 1/14 C.I.T. Scheme VII M, V.LP. Road, ManiktolaCALCUTIA 700054

Northern : seQ 335-336, Sector 34-A, CIIANDIGARH 160022

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Telegrams: Manaksanstha(Common to all offices)

Telephone

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