90smss3-portable fire extinguishers

8/18/2019 90SMSS3-Portable Fire Extinguishers

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SCECO MATERIALS STANDARD SPECIFICATION 90-SMSS-3, Rev.1

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Saudi Consolidated Electric Companyin the Eastern Province

PAGE NO. 1 of 16[90SMSS3:AHN:as] 0799

SPECIFICATION

FOR

PORTABLE FIRE EXTINGUISHERS

APPROVED BY ENGINEERING STANDARDS COMMITTEE (ESC)

ON 1416 MUHARRAM 30 (1995/06/28)




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TABLE OF CONTENTS

1.0 SCOPE

2.0 CROSS REFERENCES

3.0 APPLICABLE CODES AND STANDARDS

4.0 DESIGN AND CONSTRUCTION REQUIREMENTS

4.1 General

4.2 Ratings

4.3 Design Criteria

4.4 Materials

4.5 Fabrication

4.6 Mounting

4.7 Marking

5.0 TESTS

6.0 DATA SCHEDULE




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1.0 SCOPE

This SCECO-East Material Standard Specification (SMSS) specifies the minimum

technical requirements for design, engineering, manufacture, inspection, testing and

performance of outdoor and indoor Portable Fire Extinguishers intended to be used in the

system of Saudi Consolidated Electric Company in the Eastern Province (SCECO-East),

Saudi Arabia.

2.0 CROSS REFERENCES

This Material Standard Specification shall be read in conjunction with the SCECO-East

General Specification No. 01-SMSS-01, titled "General Requirements for All Equipment/Materials" which shall be considered as an integral part of this SMSS.

This SMSS shall also be read in conjunction with SCECO-East Purchase Order or

Contract Schedules for project, as applicable.

3.0 APPLICABLE CODES AND STANDARDS

The latest revisions of the following Codes and Standards shall be applicable for the

equipment/material covered in this SMSS. In case of conflict, the vendor/manufacturer

may propose equipment/material conforming to one group of Industry Codes and

Standards quoted hereunder without jeopardizing the requirements of this SMSS.

3.1 NFPA 10 Standard for Portable Fire Extinguishers.

3.2 NFPA Fire Protection Handbook

3.3 ANSI/UL 711 Rating and Testing of Fire Extinguishers

3.4 ANSI/UL 154 Performance Standards of Carbon Dioxide Type Fire

Extinguishers

3.5 ANSI/UL 299 Performance Standards of Dry Chemical Type Fire

Extinguishers

3.6 ANSI/UL 626 Performance Standards of Water Type Fire Extinguisher

3.7 SASO SSA 38 Saudi Arabian Standards Methods of Test for Steel Carbon

Dioxide Cartridges for Fire Extinguishers

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4.1 General

4.1.1 The fire extinguisher shall be of the manufacturer's standard design but

shall meet or exceed the requirements of this Specification in all respects.

4.1.2 The fire extinguishers will be installed interchangeably indoors or outdoors

in SCECO-East facilities.

4.1.3 For indoor installation, fire extinguishers will be installed inside an air-

conditioned building. However, the fire extinguisher must performsatisfactorily up to its rated capacity continuously without deterioration and

shall not suffer any damage during failure of the air conditioning system

which may be for a duration of up to six (6) hours under the service

conditions specified in 01-SMSS-01.

4.1.4 Fire extinguishers shall be hand held or wheeled type using extinguishing

agent as follows :

a. Hand Held - Dry chemical, carbon dioxide(CO2), or water

b. Wheeled - Dry chemical, carbon dioxide (CO2).

4.1.5 All fire extinguishers shall be designed for upright squeeze grip operation.

4.1.6 The fire extinguishers described herein shall be applicable to one or a

combination of the classes of fire listed as follows:

a. CLASS A FIRES - Are fires in ordinary combustible materials,

such as wood, cloth, paper, rubber and many

plastics.

b. CLASS B FIRES - Are fires in flammable liquids, oils, grease,

tars, oil-based paints, lacquers and flammable

gases.

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c. CLASS C FIRES - Are fires that involve energized electricalequipment wherein the electrical non-

conductivity of the extinguishing media is of

importance. (When electrical equipment is

de-energized, fire extinguishers for Class A

or B Fires may be used safely.)

4.2 Ratings

4.2.1 The rating of fire extinguishers shall be for Class A, B and C fires or a

combination of A, B and C as applicable.

4.2.2 The rating system referred above is that classification and rating system

used by Underwriters Laboratories Inc. (UL) and per NFPA 10.

4.2.3 The rating of each type of fire extinguisher shall consist of a capital

LETTER indicating the class of fire on which the fire extinguisher has been

found to be effective, preceeded by a rating in NUMERAL which indicates

its relative extinguishing effectiveness.

4.2.4 Fire extinguishers shall be capable of providing its specified rated

characteristics continuously at the specified service conditions in 01-SMSS-

01.

4.2.5 The specific UL ratings including the type, class, agent capacity, range of

stream, time of discharge and method of operation for each type of fire

extinguisher shall be as specified in Data Schedule.

4.3 Design Criteria

4.3.1 Fire extinguishers shall be designed as a complete unit for simple operation,

easy inspection and recharging.

4.3.2 The fire extinguishers shall be of such design as to provide maximum

effective horizontal range of stream per NFPA 10 for the class, type, and

rating of each extinguisher.

4.3.3 Wheeled type fire extinguisher shall be of compact low profile design for

easy maneuvering and operation by just one trained person.

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4.4 Materials

All materials used in the manufacture of fire extinguishers including its component

parts shall be resistant to corrosion, tough, durable and of high quality to insure

proper operation.

4.5 Fabrication

4.5.1 Water Fire Extinguisher (Stored Pressure)

This type of fire extinguisher consists of a single chamber (shell) containing both the agent (water) and expellant. The cap head assembly includes a

siphon tube, combination carrying handle/operating discharge lever,

discharge valve, air pressure valve and gage, discharge hose and nozzle.

This fire extinguisher is pressurized by either air or inert gas by means of an

automobile tire type valve.

a. The shell shall be of heavy duty stainless steel cylinder, butt welded

and crevice free construction for long life.

b. Visual pressure gage shall be of sufficient size for ease of reading and

allow quick visual verification of the extinguishers operational status.

c. The discharge valve shall be heavy duty brass and chrome-plated

finished with replaceable molded stem seal.

d. The combination of carrying handle/operating lever shall be of

stainless steel and shall be equipped with locking pin to prevent

accidental discharge.

e. The length of discharge hose shall not be greater than the height of the

fire extinguisher but not less than 500mm.

f. Water fire extinguisher shall have the following specific characteristics

specified in Table I below :




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Table I

UL Rating 2-A

Capacity (liters) 9.46

Horizontal range (meters) 9-12

Discharge time (seconds) 60 (Approx.)

4.5.2 Carbon Dioxide Fire Extinguisher

This type of fire extinguisher is self expelling. It consists of a pressure

cylinder (shell), a siphon tube and valve for releasing the agent, carrying

handle, operating lever and a discharge horn or horn-hose combination.

a. The shell shall be of high strength aluminum cylinder, with red glossy

polyester paint finish.

b. The valve shall be of chrome-plated heavy duty forged brass of straight

thread design to fit all sizes and with O-Ring seal.

c. The carrying handle and operating lever shall be of stainless steel and

shall be equipped with locking pin to prevent accidental discharge.

d. The siphon tube shall be of such length that it will extend from the

valve to almost at the bottom of the shell. This will permit liquefied

carbon dioxide only to reach the discharge horn until about 80 percent

of the content has been released.

e. The horn or horn-hose combination shall be nonmetallic and non-

conductor of electricity. The hose shall retain its flexibility at a

temperature of -40°C (-40°F). Hose shall have a nominal diameter of

7.9mm (5/16 in) and a length of 914mm (36 inches).

f. A durable stainless steel clip to hold the fire extinguishers horn-hosecombination firmly closed to the shell shall be provided.

g. Carbon dioxide fire extinguisher shall have the characteristics specified

in Table II below :




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Table II

UL Rating 5B : C 10B : C 10B : C

Capacity (Kg/lb) 4.6/10 6.8/15 9.1/20

Horizontal Range (m/ft) 0.9-2.4/3-8 0.9-2.4/3-8 0.9-2.4/3-8

Discharge Time (Sec.) 10 12 14

4.5.3 Dry Chemical Fire Extinguisher

This section covers fire extinguishers using dry chemical agent with

expellant gas cartridge or cylinder only. The dry chemical fire extinguisher can be hand held or wheeled type with the characteristics specified in Table

III below :

Table III

Type

Of Dry

Chemical

Capacity

(Kg/lb)

Method

Of

Operat-

ion

Approx.

Horizon-

tal Range

(m/ft.)

Approx.

Time Of

Discharge

(Sec.)

UL

Rating

HAND HELD:

Ordinary 8.2/18 Cartridge 7.6/25 19 80B:C

12.3/27 - do - 9.2/30 27 120B:C

Multi- 3.7/8.5 - do - 5.2/17 14 4A:40B:C

Purpose 7.7/17 - do - 6.1/20 20 10A:60B:C

11.3/25 - do - 6.1/20 25 20A : 80 B:C

WHEELED :

Ordinary 56.8/125 Nitrogen 7.6/25 51 320B:CCylinder

Multi- 56.8/125 - do - 7.6/25 51 40A:240B:C

Purpose




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a. Hand held Type

1. This type of fire extinguisher shall consist of a dry chemical

container, an expellant gas cartridge, a discharge hose and a shut

off nozzle, and suitable integral equipment parts to permit

fluidization of dry chemical, pressurization of the container, and

discharge of the dry chemical from the container while operated

from its normal upright position.

2. The dry chemical tank shall be a three piece steel assembly

consisting of a welded tube, a bottom closure and a top closure.Date of manufacture shall be stamped on the shell. The finished

assembly shall be hydrostatically tested at 600 psi. Completed

assembly shall be subjected to a final production air test of 240 psi

and stamped to indicate year of manufacture.

3. Steel parts shall be properly prepared to accept powder paint

application which guarantees a uniform paint thickness and

provide exceptional corrosion resistance. Paint finish shall be red

glossy polyester coating.

4. Cartridge receiver of the cartridge puncturing mechanism shall be

made of cast aluminum with the following features:

i. Provided with steel insert to prevent thread wear;

ii. With stainless steel puncture pin equipped with protective

rubber cap to prevent accumulation of contaminants;

iii. With spring loaded impregnated felt washers to seal against

moisture and lubrication to puncture pin;

iv. The puncture assembly is void of safety pin, eliminating one

step in operation. The puncture pin is operated with hose

container to prevent accidental actuation.

v. The pressure cartridge shall be mounted on the outside for

easy removal and recharge.

5. Gas tube is equipped with rubber check valves to provide proper

fluidization of the dry chemical.




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6. Expellant gas cartridge shall be of one piece steel construction

fabricated in accordance with DOT 3A-1800 Specifications.

Expellant gas to be retained in cartridge by means of a brass seal

assembly utilizing a copper seat. Seal shall incorporate safety

device with a rupture pressure range of 27.9-31 MPa (4050-4500

psi) at temperature range of 90-99°C (195-210°F).

7. Expellant cartridge guard shall be of removable steel completely

enveloping the cartridge, cartridge receiver and component parts.

Cartridge shall be attached to the receiver assembly to prevent

paint abrasion on shell and cartridge disengagement under conditions of vibration and impact.

8. Discharge hose shall be made of Ethylene Propylene Diamine and

shall be UL listed. The hose shall retain its flexibility at a

temperature of -40°C (-40°F). Hose cover shall be pin pricked to

avoid outer cover bubbling. Shell connection coupling shall be

equipped with an O-Ring to provide a proper seal.

9. Discharge nozzle body shall be made of cast aluminum with

component parts of stainless steel and other corrosion resistant

materials. Nozzle plunger assembly shall be provided with two

guide bushings (Front and Back) to assure proper sealing when

used with intermittent discharge, thus providing gas tight seal.

10. The fill cap shall be of forged aluminum utilizing a flat gasket to

provide a water seal and a guard ring to provide a gas tight seal.

Cap shall be equipped with an indicator device with a replace-

able lexan cap for visual observation if the chamber is in

pressurized condition.

11. The carrying handle for dry chemical hand held fire extinguisher

shall be designed with a 45° carrying angle, spring loaded to

prevent handle from moving during operation and prevent handle

from resting on the shell.




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b. Wheeled Type

1. This type of fire extinguisher consists of dry chemical container,

carriage and wheel, a nitrogen cylinder and valve discharge hose

with shut off nozzle, and suitable integral equipment parts to

permit fluidization of the dry chemical, pressurization of the

container and discharge of dry chemical from the container while

operated in its normal upright position.

2. The dry chemical tank or container shall be of welded steel

construction with elliptical dished heads and circumferentialseams. The material shall be of heavy duty mild carbon steel

constructed for a test pressure of at least 33l2 kPa (480 psi) and a

bursting pressure of 6624 kPa (960 psi) minimum. The tank shall

be capable of storing 56.8kg (l25 lb) of dry chemical.

3. The fire extinguisher wheels shall be semi-pneumatic for smooth

transport. The maximum diameter to allow tight turn during

maneuver and lower center of gravity for stability shall be 400mm

(l6 inch). The carriage assembly including the handle, axle,

nozzle holder and hose hanger shall be of the welded construction.

4. The nitrogen cylinder shall be mounted in a vertical position. The

method of mounting shall be of design to permit easy access

during operation and replacement. It shall be a nitrogen medical

cylinder, Type "E", with a capacity of 3.l2m3 (110 ft3).

5. Each cylinder shall be equipped with a conventional hand

operated nitrogen cylinder valve with visual pressure gage.

6. The fire extinguisher hose shall be l9mm (3/4 in.) in diameter, l5m

(50 ft.) long with steel coupling and hydrostatically tested at 33l2kPa (480 psi). The nozzle shall be of the design to produce a flow

rate of l to l.5 kg per second at a range of not less than 7.6m (25

ft.) at the extinguisher operating pressure of l656 kPa (240 psi).

7. The fill cap shall be of forged aluminum utilizing a flat gasket to

provide a water seal and a quad ring to provide a gas tight seal.

Cap shall be equipped with an indicator device with a replaceable

lexan cap for quick visual inspection.




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9. Steel parts shall be properly prepared to near white metal blast toaccept powder paint application which guarantees a uniform paint

thickness and provides exceptional corrosion resistance. Paint

finish shall be red glossy polyester coating.

4.6 Mounting

Hand held fire extinguishers shall be supplied with hangers or brackets made of

cadmium or zinc plated steel. The mounting hanger or bracket shall be designed to

permit for quick and easy hanging or removal of the fire extinguisher.

4.7 Marking

4.7.1 Fire extinguishers shall be provided with split nameplate made from tough,

glare-resistant, etched aluminum.

4.7.2 The split nameplate shall have the following minimum information:

a. Operating instructions and the fire class symbol for which the

extinguisher is applicable shall be on the front plate.

b. On the back plate, information shall include:

1. After use and maintenance instructions

2. Type, class and rating

3. Name of Manufacturer

4. Temperature range for which the extinguisher will operate

satisfactorily

5. Identification of the listing, testing and labelling organization, the

fire test, and the performance standard which the extinguisher

meet or exceeds.

4.7.3 The nameplate and markings shall be of contrasting color to assure

readability.

5.0 TESTS

All test results shall be provided for review and acceptance by SCECO-East.

5.1 Type (Design) Tests




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5.1.1 All type (design) tests prescribed in the relevant ANSI/UL 711 and SASOStandards shall be performed on one unit of every new design but not less

than one unit of every 100 units. Tests shall include, but not limited to, the

following:

a. Visual inspection

b. Hydrostatic Pressure Test

c. Leakage Test

d. Ageing Test

e. Bursting Strength Test

f. Shaking and vibration test

g. Discharging and extinguishing capability test

5.1.2 In lieu of the actual type (design) tests, certified test reports of type

(design) tests performed on an identical unit may be submitted to SCECO-

East for review and approval during bidding stage.

5.2 Routine (Production) Tests

All routine (production) tests prescribed in the relevant NFPA10 shall be

performed on all units and component parts prior to delivery to SCECO-East.

5.3 Special Tests

Performance testing and inspection shall include testing for extinguishing and

discharge capacity, discharge time and discharge range. This test shall ensure that

extinguisher will perform satisfactorily in accordance with the specified capacity

and rating.




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6.0 DATA SCHEDULE


SCECO-East Inquiry No. Date

SCECO-East Purchase Order No. Date

or Contract No.

SCECO-East PTS No./Project Title with J. O. No.

REFERENCESECTION NO. DESCRIPTION 'A' 'B' 'C'

3.0 APPLICABLE CODES & STANDARDS *


4.1.3 Type of Fire Extinguisher

(Hand Held/Wheeled)

4.1.4 Type of Extinguisher Agent

Type of Dry Chemical (if used)

4.2 Ratings

4.2.1 Fire Extinguisher Classification

4.2.5 Capacity (Kg)

'A' - SCECO-EAST SPECIFIED DATA/PARAMETERS

'B' - BIDDER/SUPPLIER/VENDOR/CONTRACTOR PROPOSED

DATA/PARAMETERS

'C' - REMARKS SUPPORTING THE PROPOSED DEVIATION IN COLUMN 'B'

'*' - DATA/PARAMETER TO BE PROVIDED/PROPOSED BY THE BIDDER/

SUPPLIER/VENDOR/CONTRACTOR IN COLUMN 'B'




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6.0 DATA SCHEDULE


REFERENCE

SECTION NO. DESCRIPTION 'A' 'B' 'C'

4.2 (Continued)

Horizontal Range (Meters)

Discharge Time (Sec.)

5.0 TESTS

5.3 Performance Test Require ? Yes/No




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6.0 DATA SCHEDULE


A. ADDITIONAL TECHNICAL INFORMATION OR FEATURES SPECIFIED BY

SCECO-EAST :

B. ADDITIONAL SUPPLEMENTARY DATA OR FEATURES PROPOSED BY BIDDER/

VENDOR/SUPPLIER/CONTRACTOR :

C. OTHER PARTICULARS TO BE FILLED UP BY BIDDER/VENDOR/SUPPLIER/

CONTRACTOR :

Manufacturer Vendor/Supplier/

of Material/Equipment Contractor

Name of Company

Location and Office Address

Name and Signature of Authorized

Representative and Date

Official Seal/Stamp

of the Company

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