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GB 17835-2008: Water based extinguishing agent
GB 17835-2008
GB
NATIONAL STANDARD OF THE
PEOPLE?€?S REPUBLIC OF CHINA
ICS 13.220.10
C 84
Replacing GB 17835-1999
Water based extinguishing agent
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ISSUED ON: OCTOBER 08, 2008
IMPLEMENTED ON: MAY 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People?€?s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Classification and marking ... 6
5 Requirements ... 6
6 Test methods ... 7
7 Inspection rules ... 12
8 Packaging, marking, transportation and storage ... 14
Water based extinguishing agent
1 Scope
This Standard specifies the terms and definitions, requirements, test methods,
inspection rules, marking and transportation of water based extinguishing agent.
This Standard applies to water based extinguishing agent.
2 Normative references
The terms in the following documents become the terms of this Standard by reference
to this Standard. For dated references, all subsequent amendments (not including errata
content) or revisions do not apply to this standard. However, parties to agreements that
are based on this Standard are encouraged to study whether the latest versions of these
documents can be used. For undated references, the latest edition applies to this
Standard.
GB 4351.1-2005, Portable fire extinguishers - Part 1: Performance and construction
(ISO 7165:1999, NEQ)
GB/T 6682, Water for analytical laboratory use - Specification and test methods
(GB/T 6682-2008, ISO 3696:1987, MOD)
GB/T 13267-1991, Water quality - Determination of the acute toxicity of substances
to a freshwater fish (Brachydanio rerio Hamilton-Buchanan) (neq ISO 7346-1 ~
7346-3:1984)
GB 15308-2006, Foam extinguishing agent (ISO 7203-1:1995, ISO 7203-2:1995,
ISO 7203-3:1999, NEQ)
SH 0004-1990, Solvent oil for use in rubber industry
3 Terms and definitions
Terms and definitions determined by GB 15308-2006, and the following ones are
applicable to this Standard.
3.1 Water based extinguishing agent
Liquid extinguishing agent ?€? composed of water, penetrating agent, flame retardant and
other additives ?€? that extinguishes fire in the form of droplets or a mixture of droplets
and foam.
6.6.1 Test species
The test fish species shall be Brachydanio rerio Hamilton-Buchanan (Teleostei,
Cyprinidae), of body length (30??5) mm, weight (0.3??0.1) g, i.e., juvenile fish of the
same size selected from the same domestication pond. Before the test, the fish school
shall be domesticated for at least two weeks in continuously aerated water under the
same environmental conditions as the test. Stop the feeding 24 hours before the test,
and clean the feces and food residues every day. The death rate during domestication
must not exceed 10%; otherwise, the batch of fish shall not be used for the test. The test
fish shall be free from obvious diseases and deformities visible to the naked eye. No
disease treatment shall be done two weeks before the test. See Appendix B of GB/T
13267-1991 for the environmental parameters of domestication of Brachydanio rerio
Hamilton-Buchanan.
6.6 Test container
2 L glass beaker, which ?€? if used for the first time ?€? shall be carefully cleaned before
use. After the test, empty the container; clean it by appropriate means; use water to wash
away traces of the test substance and cleaning agent; dry it for later use. Use standard
dilution water to rinse the test container before use.
6.6.3 Standard dilution water
The pH value of the newly prepared standard dilution water is 7.8 ?? 0.2, and the
hardness is about 250 mg/L (calculated as CaCO3). Prepare ?€? by using distilled water
or deionized water that meets the requirements of GB/T 6682 ?€? from the following four
solutions:
a) calcium chloride solution: Dissolve 11.76 g of calcium chloride (CaCl2??2H2O) in
water and dilute to 1 L.
b) magnesium sulfate solution: Dissolve 4.93 g of magnesium sulfate (MgSO4??7H2O)
in water and dilute to 1 L.
c) sodium bicarbonate solution: Dissolve 2.59 g of sodium bicarbonate (NaHCO3)
in water and dilute to 1 L.
d) potassium chloride solution: Dissolve 0.23 g of potassium chloride (KCl) in water
and dilute to 1 L.
Take 25 mL of each of the above four solutions; mix them and use distilled water to
dilute to 1 L. Aerate the prepared dilution water until the dissolved oxygen
concentration reaches the air saturation value; stabilize the pH value at 7.8 ?? 0.2.
6.6.4 Test conditions
During the test, keep the temperature of the mixture at (23??2) ??C; stop feeding 24 hours
before the test, and feed no food during the whole test.
Class A fire extinguishing test shall be carried out indoors. The test room shall have
enough space, and the ventilation conditions shall meet the requirements of free
combustion of wood piles.
The fire extinguishing test can be operated by specially-assigned personnel, and the
operator can wear a transparent mask and protective clothing and gloves for radiant heat
insulation.
6.7.3.3 Test procedure
Pour clear water with a depth of 30 mm into the ignition plate first; then, add fuel; put
the ignition plate directly under the wood pile.
Light the fuel; when the fuel burns out, the ignition plate can be pulled out from under
the wood pile to allow the wood pile to burn freely. When the wood pile is burned to
53% ~ 57% of its original mass, the pre-combustion ends.
Note: The mass loss of the wood pile during combustion can be measured directly or
by other methods that have been shown to provide fairly consistent results.
Start fire extinguishing after the pre-combustion. Fire extinguishing shall be carried out
in front of the wood pile, started by spraying from not less than 1.8 m away from the
wood pile, then approaching the wood pile and spraying the top, bottom, sides, etc., but
not the back of the wood pile. During fire extinguishing, keep the fire extinguisher in
the maximum open state and spray continuously. The operator and any part of the fire
extinguisher shall not touch the model.
6.7.3.4 Test evaluation
If there is no visible flame within 10 minutes after the flame is extinguished (while the
discontinuous flame within 10 minutes is not counted), it means that the fire is
successfully extinguished.
If the wooden pile collapses during the fire extinguishing test, the test is invalid.
The fire extinguishing test shall be carried out 3 times, and if the fire is extinguished
successfully in 2 times, it shall be regarded as a success. If the fire is successfully
extinguished twice in a row, the third time can be exempted.
6.7.4 Class B fire extinguishing test
6.7.4.1 Test model
The Class B fire extinguishing test model is composed of fuel put into a circular disk,
which is made of steel plate; the size of the model shall meet the requirements in Table
12 of GB 4351.1-2005. The fuel is solvent oil for use in rubber industry (suitable for
alcohol-resistant and non-alcohol-resistant type) and 99% acetone (suitable for alcohol-
resistant type) that meet the requirements of SH 0004-1990.
7.2 Sampling
Perform according to 6.1 in GB 15308-2006. The sample quantity is 25 kg.
7.3 Exit-factory inspection
7.3.1 The ex-factory inspection items for each batch of products shall at least include:
freezing point, pH value, and surface tension.
7.3.2 The ex-factory inspection items for each group of products shall at least include:
freezing point, pH value, surface tension and fire extinguishing performance.
7.4 Type inspection
All the technical indicators listed in Chapter 5 of this Standard are type inspection items.
In any of the following cases, type inspection shall be carried out; the base number of
products to be sampled during type inspection shall not be less than 2 t.
a) when a new product is identified or an old product is transferred to another factory
for production;
b) when there are major changes in raw materials, processes, and formulas during
official production;
c) when the production, which has been suspended for more than one year, is
resumed;
d) when the cumulative output of two years of normal production or intermittent
production reaches 500 t;
e) when there is a requirement for market access or when the national quality
supervision agency proposes a type inspection;
f) when there is a large difference between the ex-factory inspection and the last type
inspection.
7.5 Determination of the test result
7.5.1 Determination of ex-factory inspection results
The ex-factory inspection results shall be determined by the manufacturer itself
according to the inspection regulations.
7.5.2 Determination of type inspection results
If one of the following conditions is met, judge the sample to be qualified.
-- All indicators meet the requirements of Chapter 5;