Public Safety Industrial Standard of the People’s Republic of China

GA 498-2012 In replacement of GA 498-2004

• Chapter 5 and Chapter 7 hereunder are obligatory and the rest is recommended.

• This standard is drafted in accordance with the guidelines under GB/T 1.1-2009.

• This standard substitutes GA 498-2004 Fire Extinguishing Device for Kitchen Equipment.

• Compared with GA 498-2004, major technical changes in addition to editorial modification are as follows:

• The normative reference list is modified (see Chapter 2, Chapter 2 of the 2004 version);

• The requirements on designation, operating temperature scope, container assembly material and control panel are modified (see 4.2, 4.3.1, 5.2.1, 5.3, and 4.1, 4.2.1, 5.2, 5.15 of the 2004 version);

• Requirements on classification jetting performance parameter, pressure display, check valve, extinguishing agent, expellant gas, etc. (see 4.1, 5.1.3.4, 5.2.7, 5.8, 5.13);

• Linkage test, the deep fryer fire and work fire extinguishing test, the fume hood fire and exhaust pipe fire extinguishing test, anti-splash test, working medium corrosion test and other methods are modified (see 6.3, 6.4, 6.5, 6.6, 6.14, and 6.3, 6.4, 6.5, 6.7.3 of the 2004 version).

• This standard is put forward by the Fire Department of the Ministry of Public Security.

• This standard is subject to Subcommittee on Fixed Fire Extinguishing System of National

• Technical Committee on Fire Protection (SAC/TC 113/SC 2).

• This standard is drafted by Tianjin Fire Research Institute of the Ministry of Public Security.

• This standard is also jointly drafted by Hangzhou Jiean Fire Control Co., Ltd. and Sichuan Vita Long Fire Control Co., Ltd.

• This standard is drafted mainly by Wang Shuyan, Liu Lianxi, Gao Yunsheng, Dong Haibin, Fu Shan and Tang Liu.

• The issuance condition of historical version of the standard substituted by this standard is as below: GA 498-2004.

1. Scope
This standard defines the terms and definition, classification, model designation, requirements, test methods, inspection rules and manual preparation requirement of fire extinguishing devices for kitchen equipment.
This standard applies to the fire extinguishing devices for kitchen equipment equipped in buildings.

2. Normative Reference
The following documents are inevitable to the application of this standard. For all dated references, the version with date shall apply to this standard. For all undated references, the latest version (including all modification) shall apply to this standard.

GB 4351.1-2005 Portable Extinguisher Part 1: Performance and Structure Requirement
GB 5099 Seamless Steel Gas Cylinders
GB/T 8979 Pure Nitrogen, High Purity Nitrogen and Ultra-pure Nitrogen
GB/T 9969 Industrial Product Manual-General Guideline
GB 16889-2010 General Technical Conditions of Carbon Dioxide Extinguisher System and Assemblies
GB/T 25208-2010 Product Environment Test Methods of Fixed Extinguisher System
GA 61-2010 General Technical Conditions of Expellant and Control Devices of Fixed Extinguisher System

3. Term and Definition
The following terms and definitions apply to this document.

3.1 Fire extinguishing device for kitchen equipment

The complete devices consisting of agent storage container assemblies, expellant gas storage container assemblies (suitable for expellant cartridge), pipeline, nozzle, valves and other driving devices, thermal detector, control devices, linkage-controlled gas shutoff valves and so on, which are fixed at high-humidity, wet and warm environment like kitchens and can automatically detect fire from kitchen devices and implement fire extinguishing.

3.2 Linkage-controlled gas shutoff valve
The valve is mounted on the gas pipeline of kitchen hearth and can immediately shut off when fire extinguishing device starts.

3.3 Linkage-controlled water flow valve
The valve is mounted on the pipeline of fire extinguishing device and is connected to water source, when the device starts and the extinguishing agent is totally jetted, it can immediately start.

3.4 Agent storage container assemblies
It consists of extinguishing agent container, container valve, syphon tube and so on and is for storing extinguishing agent.

3.5 Expellant gas storage container assemblies
It consists of gas container, container valve and so on and is for storing expellant gas.

3.6 Storage pressure

The storage pressure of stored-pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies refers to the balanced pressure in the container at 20℃ after being pressured according to rated filling.

3.7 Maximal operating pressure

The maximal operating pressure of pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies refer to the balanced pressure in the container at maximal operating temperature after being pressured according to rated filling.

The maximal operating pressure of cartridge-driven extinguishing agent container assemblies refers to the maximal pressure at the reducing valve outlet when the fire extinguishing device operates normally under the maximal operating temperature.

The maximal operating pressure of reducing valve refers to the balanced pressure in the container under the maximal operating temperature after being pressured according to rated filling.

The maximal operating pressure of linkage-controlled water flow valve, linkage-controlled gas shutoff valve, check valve, connection tubes and pipeline tubes refer to the maximal pressure when the medium runs through the part when the fire extinguishing device is operating normally under the maximal operating temperature.

3.8 Discharge rate
The amount of extinguishing agent jetted from the nozzle in unit time.

4. Classification, Designation and Basic Parameters

4.1.1 According to the type of extinguishing agent:
a) Special extinguishing agent for cooking oil;
b) Other extinguishing agents

4.1.2 According to the storage form of extinguishing agent:
a) Stored-pressure;
b) Cartridge-driven

4.1.3 According to starting type:
a) Power start type;
b) Mechanical start type

4.1.4 According to the quantity of extinguishing agent storage containers:
a) Single container;
b) Multiple containers

4.1.5 According to whether cooling water is jetted:
a) Automatically switch into jetting cooling water after jetting extinguishing agent;
b) Only jet extinguishing agent.

4.2 Model designation

4.2.1 See Table 1 for the classification code of extinguishing agent, storage form code of extinguishing agent, starting mode code and water cooling function of fire extinguishing device for kitchen equipment (hereinafter referred to as device).

Classification code of extinguishing agent Storage form code of extinguishing agent Starting mode
code Water cooling function
Special extinguishing agent for cooking oil Other extinguishing agents Stored-pressure
Cartridge-driven Power start type Mechanical start type With water cooling function Without
water cooling function

4.2.2 The model designation mode of device is as below:

Defined by enterprise
Quantity of extinguishing agent container
Quantity of nozzles
Water cooling function code (see Table 1)
Automatic mode code (see Table 1)
Storage form code of extinguishing agent (see Table 1)
Classification code of extinguishing agent (see Table 1)
Device code: fire extinguishing device for kitchen equipment

Example: CMZJS8-3, indicating the use of special extinguishing agent for cooking oil, stored-pressure type, mechanical start type extinguishing device with water cooling function, 8 nozzles and 3 extinguishing agent containers.

4.3 Basic Parameters

4.3.1 Operating temperature range
The operating temperature range of device should be 4℃~55℃.
When the designed operating temperature range of product is higher than above temperature limit, permanent mark should be made on the product plate, while relevant performance requirements and test methods should also be adjusted according to the actual temperature range.

4.3.2 Maximal operating pressure and storage pressure
The maximal operating pressure and storage pressure of the container are to be published by the manufacturing unit.

5. Requirement

5.1 Whole Device

5.1.1 Appearance and mark

5.1.1.1 The integral parts of the device should be free of obvious processing faults or mechanical damage, the external appearance of non-corrosion resistant materials should undergo anticorrosion treatment, the anticorrosion coating and cladding should be complete and even, and fasteners should be tight.

5.1.1.2 The external appearance of extinguishing agent storage containers should be marked with the extinguishing agent name, the filling mass of agent and valid service period in Chinese, clear and eligible. The expellant cylinder should be marked with expellant gas name and filling quality (or pressure).

5.1.1.3 Set endurable plate at distinct device parts, which should marked the product name, model, implementing standard code, storage pressure, extinguishing agent type, extinguishing agent filling amount, temperature range of use, manufacturing unit and factory date, etc..

5.1.2 Starting mode

5.1.2.1 Mechanically started device should equip automatic start and mechanical emergency start function.

5.1.2.2 Power-started device should equip start, manual start and mechanical emergency start function.

5.1.2.3 The operating mechanism of mechanical emergency start should conform to the following requirements:
a) Have measures against faulty action, and mark the operation method with words or images, and the tripping force preventing faulty action should be larger than 20N and be no larger than 100N;
b) Manual operating force should be no larger than 150N;
c) Finger pulling force should be no larger than 50N;
d) Finger pushing force should be no larger than 10N;
e) Manual operating displacement should be no larger than 300N.

5.1.3 Linkage performance
5.1.3.1 When the device is started in various manners, the action should be accurate, reliable and with no fault; during test, the sealing parts of all components should show no leaking.
5.1.3.2 When the device starts, the linkage-controlled gas valve should be able to shut off immediately.

5.1.3.3 For devices with water cooling function, after the extinguishing agent is fully jetted, the linkage-controlled water flow valve should be able to start water jetting immediately and the automatic switch should take no longer than 5s.

5.1.3.4 During linkage operation, the jetting performance parameters of the nozzle should conform to Table

Table 2 Jetting Performance Parameters
Type of extinguishing agent Jetting time
Jetting delay time
Nozzle operating pressure
MPa Cooling water nozzle operating pressure

5.1.3.5 The display, alarm and output terminal action condition when the device is jetting should conform to 5.3.2 and 5.3.3.

5.1.4 Fire extinguishing performance

5.1.4.1 The extinguishing performance of deep fryer and work fire
Conduct extinguishing test according to 6.4 and when the device finishes jetting, the flame should be totally put out. No after-combustion occurs within 20 min after the flame is put out, and the oil temperature in the fryer should be lower than its self-ignition point of 33℃.

5.1.4.2 Extinguishing performance of fume hood and exhaust pipe fire
Conduct extinguishing test according to 6.5 and when the device finishes jetting, the flame should be totally put out. The temperature inside the exhaust pipe should lower and show no temperature increase.

5.1.5 Anti-splash performance
Conduct anti-splash test according to 6.6.2 and no burning oil should splash out when the device is jetting extinguishing agent, namely, no burning oil spot should exist outside the cooking dish.
Conduct anti-splash test according to 6.6.3 and the diameter of oil spot splashing out when the device is jetting extinguishing agent should be no larger than 4.8mm.

5.2 Container assemblies

5.2.1 Materials

5.2.1.1 Expellant gas storage container should adopt seamless steel gas cylinder and the materials should conform to GB 5099.

5.2.1.2 Extinguishing agent storage container should adopt seamless steel gas cylinder or welded steel container, and the materials should conform to the anticorrosion performance under 5.2.5.

5.2.1.3 The syphon tube material of extinguishing agent storage container should adopt materials resistant to the corrosion of extinguishing agent. When the syphon tube adopts plastic, immersion test of extinguishing agent should be done according to 7.12.3.2 in GB 4351.1-2005, and when measuring tension or ring shoulder pressure strength, the decreasing value should be no larger than 40% of that before test.

5.2.2 Sealing

5.2.2.1 Stored-pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies should undergo air pressure sealing test according to 6.15.1, and all sealing parts of the container assemblies should show no foam leakage.

5.2.2.2 Cartridge expellant extinguishing agent storage container assemblies should undergo water pressure sealing test according to 6.15.2, and no sealing part of the container assemblies should show leakage during test.

5.2.3 Strength
Extinguishing agent storage container assemblies and expellant gas storage container assemblies should undergo hydrogen strength test according to 6.16, and no container assemblies should show leakage or visible deformation.

5.2.4 Anti-shock performance
Stored-pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies should undergo vibration test according to 6.8. After test, no part of container assemblies should show structural damage and the net internal weight loss should be no larger than 0.25% of the filling amount.

5.2.5 Anticorrosion performance to medium
Extinguishing agent storage container assemblies should undergo internal corrosion test according to 6.14 and after test, the internal coating of container should show no shedding, crack or foam; if there is no coating, the internal wall surface should show no visible rust and the extinguishing agent should show no color change.

5.2.6 Resistance to high and low temperature
Expellant gas storage container assemblies should undergo high and low temperature cycle test according to 6.9 and after test, the net loss of gas inside the container should be no larger than 0.25% of the gas filling amount.

5.2.7 Pressure display
Extinguishing agent storage container assemblies and expellant gas storage container assemblies should equip display showing the internal pressure, and the performance should conform to 5.14.2 in GB 16669-2010.

5.3 Control Panel

5.3.1 Power source requirement
The power source should conform to the following requirements:
a) When AC power supply voltage is within 187 Va.c~242 Va.c, and change within the range with frequency of 50 Hz±1 Hz occurs, the control panel should be able to operate reliably.
b) Tehran standby power source capacity of the control panel should ensure successive operation of 24 hours under normal monitoring status and ensure reliable device start during this period.
c) The master and standby power source should be able to switch for power supply with operation indication.

5.3.2 Alarm function
The control panel should be able to receive the alarm signal from the thermal detector or pressure signal valve (ringer) and send off voice and light alarm. Under rated operating voltage and with a distance of 1m to the control panel, the acoustic pressure level (A-weighted) of internal and external audio elements should be higher than 65dB and 86dB respectively and below 115dB.

5.3.3 Control and display function

5.3.3.1 Power start
The control panel of power-started device should have the following control and display functions:
a) Automatic and manual starting fire extinguishing device, and automatic and manual statuses should have obvious marks and can be switched. Whether the control panel is in automatic or manual status, manual start should always be effective;
b) Delayed start function, with the delay time adjustable within 0s~30s;
c) The “Manual Start” button should have protection measures against faulty touch of staff; when setting “Emergent Stop” button, the button should be set at available position. The statuses of “Manual Start” and “Emergent Stop” should have obvious light signal display;
d) Display of the feedback signal of starting fire extinguishing device;
e) Connection terminal for controlling external devices and connection terminal for transmitting device start signal to fire control center;
f) Self (including detection and control circuit) fault alarm display function.

5.3.3.2 Mechanical start
The control panel of mechanical start device should have the following control and display functions:
a) Display of the feedback signal of starting fire extinguishing device and the signal of shutting off linkage-controlled gas valve;
b) Connection terminal for controlling external devices and connection terminal for transmitting device start signal to fire control center.

5.3.4 Other performance
The resistance performance to weather, mechanical environment, electrical interference, voltage, insulating resistance and part performance of the control panel should conform to GA 61-2010.

5.4 Container Valve

5.4.1 Materials
The container valve should adopt austenite stainless steel or copper alloy, and other metals with strength and anticorrosion performance no lower than above materials may also be used for manufacturing.

5.4.2 Anticorrosion performance

5.4.2.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the container valve should show no obvious corrosion damage and its sealing performance should conform to 5.2.2.

5.4.2.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the container valve should show no obvious cracks or damage, and its strength performance should conform to 5.2.3.

5.4.3 Operation reliability
Conduct operation reliability test according to 6.17.1, the action of container valve and its auxiliary control driving devices should be flexible and reliable, without any fault or structural damage (except for allowable part damage under normal operation), and after test, its sealing performance should conform to 5.2.2.

5.5 Reducing Valve

5.5.1 Materials
The reducing valve should adopt austenite stainless steel or copper alloy, and other metals with strength and anticorrosion performance no lower than above materials may also be used for manufacturing.

5.5.2 Sealing

5.5.2.1 For reducing valve on expellant gas pipeline, conduct air pressure sealing test according to 6.15.1 and all sealing parts of the reducing valve should show no foam leakage.

5.5.2.2 For reducing valve on jetting extinguishing agent pipeline, conduct water pressure sealing test according to 6.15.2 and all sealing parts of the reducing valve should show no leakage.

5.5.3 Strength
Conduct hydraulic strength test according to 6.16, and the valve should show no leakage, deformation or damage during test.

5.5.4 Anticorrosion performance

5.5.4.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the reducing valve should show no obvious corrosion damage and its sealing performance should conform to 5.5.2.

5.5.4.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the reducing valve should show no obvious cracks or damage, and its strength performance should conform to 5.5.3.

5.5.5 Reducing characteristics
Conduct test according to 6.18, compare the reducing characteristic of the reducing valve measured within the specified flow range to the published value on manual of the manufacturing unit, and the difference should not exceed ±10% of the published value.

5.6 Linkage-controlled Water Flow Valve

5.6.1 Materials
Linkage-controlled water flow valve should adopt austenite stainless steel or copper alloy, and other metals with strength and anticorrosion performance no lower than above materials may also be used for manufacturing.

5.6.2 Sealing
Conduct water pressure sealing test according to 6.15.2 and all sealing parts of the linkage-controlled water flow valve should show no leakage.

5.6.3 Strength
Conduct hydraulic strength test according to 6.16, and the linkage-controlled water flow valve should show no leakage, deformation or damage during test.

5.6.4 Anticorrosion performance

5.6.4.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the linkage-controlled water flow valve should show no obvious corrosion damage and its sealing performance should conform to 5.6.2.

5.6.4.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the linkage-controlled water flow valve should show no obvious cracks or damage, and its strength performance should conform to 5.6.3.

5.6.5 Operation reliability
Conduct operation reliability test according to 6.17.2, the action of linkage-controlled water flow valve during test should be flexible and reliable, without any fault or structural damage, and after test, its sealing performance should conform to 5.6.2.

5.7 Linkage-controlled gas valve

5.7.1 Structure
Linkage-controlled gas valve should select products with market access and acceptance certificate, and can be linked to the device.

5.7.2 Sealing
Conduct air pressure sealing test according to 6.15.1 and all sealing parts of the linkage-controlled gas valve should show no foam leakage.

5.7.3 Strength
Conduct hydraulic strength test according to 6.16, and the linkage-controlled gas valve should show no leakage, deformation or damage during test.

5.7.4 Anticorrosion performance

5. 7.4.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the linkage-controlled gas valve should show no obvious corrosion damage and its sealing performance should conform to 5.7.2.

5.7.4.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the linkage-controlled gas valve should show no obvious cracks or damage, and its strength performance should conform to 5.7.3.

5.7.5 Operation reliability
Conduct operation reliability test according to 6.17.3, the action of linkage-controlled gas valve during test should be flexible and reliable, without any fault or structural damage, and after test, its sealing performance should conform to 5.7.2.

5.8 Check Valve

5.8.1 Materials
Check valve should adopt austenite stainless steel or copper alloy, and other metals with strength and anticorrosion performance no lower than above materials may also be used for manufacturing.

5.8.2 Sealing

5.8.2.1 Positive sealing

5.8.2.1.1 For check valve on expellant gas pipeline, conduct positive air pressure sealing test according to 6.15.1 and all sealing parts of the check valve should show no foam leakage.

5.8.2.1.2 For check valve on extinguishing agent circulation pipeline, conduct positive water pressure sealing test according to 6.15.2 and all sealing parts of the check valve should show no leakage.

5.8.2.2 Reverse sealing

5.8.2.2.1 For check valve on expellant gas pipeline, conduct reverse air pressure sealing test according to
6.15.1 and all sealing parts of the check valve should show no foam leakage.

5.8.2.2.2 For check valve on extinguishing agent circulation pipeline, conduct reverse water pressure sealing test according to 6.15.2 and all sealing parts of the check valve should show no leakage.

5.8.3 Strength
Conduct hydraulic strength test according to 6.16, and the check valve should show no leakage, deformation or damage during test.

5.8.4 Anticorrosion performance

5.8.4.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the check valve should show no obvious corrosion damage and its sealing performance should conform to 5.8.2.
5.8.4.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the check valve should show no obvious cracks or damage, and its strength performance should conform to 5.8.3.

5.8.5 Operation reliability
Conduct operation reliability test according to 6.17.4, the check valve should be able to tolerate “On-Off” action test for 100 times and its starting and shutting should be flexible and reliable, without any fault or structural damage, and after test, its sealing performance should conform to 5.8.2.

5.8.6 Starting pressure
Conduct test according to 6.19, and the starting pressure of the check valve should not exceed the published value on the manual of the manufacturing unit.

5.9 Nozzle

5.9.1 Structure
The nozzle should equip protection cap preventing the jet orifice from being obstructed by foreign substance and equip filter preventing the jet orifice from being obstructed by sundries. During jetting, the protection cap should not affect normal jetting of the nozzle.

5.9.2 Materials
The nozzle should adopt austenite stainless steel, and other metals with strength and anticorrosion performance no lower than above materials may also be used for manufacturing.
5.9.3 Resistance performance to shock
Conduct mechanical shock test according to 6.20.2, and the nozzle should show no deformation, crack or damage.

5.9.4 Resistance performance to high temperature
Conduct high temperature resistance test according to 6.20.3, and the nozzle should show no deformation, crack or damage.

5.9.5 Anticorrosion performance

5.9.5.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12. After test, the nozzle should show no obvious corrosion damage.

5.9.5.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the nozzle should show no crack or damage.

5.10 Thermal Detector

5.10.1 Action temperature
According to various installation places and locations, the nominal action temperature of thermal detectors may use 74℃,100℃,138℃,182℃,232℃,260℃ and so on.
During test according to 6.21.1, the action temperature of thermal detectors should not exceed the range of [X±(0.035X+0.62)] (X is nominal action temperature in ℃).

5.10.2 Thermal stability
During test according to 6.21.2, the thermal detector should not act.

5.10.3 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12, the thermal detector and its auxiliary parts should show no obvious corrosion damages. After test, the action temperature of thermal detector should conform to 5.10.1.

5.11 Driver

5.11.1 Driving force
The driving force of the driver should conform to GA 61-2010.

5.11.2 Operation reliability
Conduct operation reliability test according to 6.17.5, the action of driver should be flexible and reliable, without any fault or structural damage (except for allowable part damage under normal operation), and after test, the driving force should conform to 5.11.1.

5.11.3 Anticorrosion performance

5.11.3.1 Anticorrosion performance to salt fog
Conduct salt fog corrosion test according to 6.12, the driver and its auxiliary parts should show no corrosion damage. After test, the driving force of the driver should not decrease. Conduct operation reliability test under normal temperature once, the result should conform to 5.11.2.

5.11.3.2 Anticorrosion performance to Ammonia residual stress resistance
Conduct Ammonia test for residual stress resistance according to 6.13. After test, the driver and its auxiliary parts should show no crack or damage.

5.12 Connection Pipe, Pipeline and Pipe Fittings

5.12.1 Materials
Connection pipes, pipeline and pipe fittings should adopt anticorrosion materials for manufacturing and should not use hot dip galvanized pipes or iron cast members.

5.12.2 Sealing
Conduct water pressure sealing test according to 6.15 and no leakage should occur during test.

5.12.3 Strength
Conduct hydraulic strength test according to 6.16, and no leakage, deformation or damage should occur during test.

5.13 Extinguishing Agent and Expellant Gas

5.13.1 The extinguishing agent filled in the device container should be products with market access and acceptance certificate.

5.13.2 For the expellant gas of nitrogen, it should conform to GB/T 8979.

6. Test Methods

6.1 Device Appearance and Mark Inspection
Inspect the model, operation temperature range, operation pressure and storage pressure of the tested device according to design drawing and relevant technical materials; inspect the nameplate, part marks and processing, coating quality and the like of the tested device, record the inspection content.

6.2 Manual Operation Test of Device
The tested device should be under normal operation condition and the precision of the ergometer should not be lower than 2.5.
Connect the operation mechanism of mechanical emergent start to the ergometer, start the tested device through the ergometer. Record the largest operating force, measure and record the maximal operation path.

6.3 Device Linkage Test

6.3.1 Test preparation
According to the device composition drawing, inspect the device composition with naked eyes and it should include all parts applied for model inspection, the device should be under quasi operating condition, and the extinguishing agent in the extinguishing agent storage container can be replaced with water.

6.3.2 Automatic start function test
Add fire analog signal to the thermal detector to make the device start automatically, observe its action condition and record.

6.3.3 Manual start function test
Manually start the device, observe its action condition and record. This test can be done at the same time with 6.4 extinguishing test.

6.3.4 Mechanical emergent start function test
Manually operate the start device of the mechanical emergent operation mechanism, observe its action condition and record. This test can be done at the same time with 6.4 extinguishing test.

6.3.5 Jetting performance parameter test
Install two press sensors at the end of the device and near the adjacent nozzle, conduct tests of 6.3.2 and 6.3.3, record the pressure, jetting time and jetting delay time of the nozzle at the same time.

6.4 The Deep Fryer Fire and Work Fire Extinguishing Test

6.4.1 Test Preparation

6.4.1.1 Test condition
The test should be done under following conditions:
a) The test should be done indoor;
b) Before test, put the extinguishing agent storage container assemblies and expellant gas container assemblies filled with rated amount and storage pressure under the lowest storage temperature for over 16 hours;
c) The pipeline, pipe fittings, extinguishing agent filling amount, nozzle arrangement, quantity and installation height and other values should conform to the technical documents and manuals provided by the manufacturing unit;
d) The nozzle should be installed with the maximal allowable height and the most unfavorable angle in the manual;
e) The test should be done under the largest pipe diameter, the most branches and the longest pipeline allowable by the device design;
f) The test cooking utensils should be put under the nozzle at the most unfavorable location, namely, the location of the lowest jetting rate;
g) Temperature measurement is done by the thermoelectric couple immersed in oil, which should be K-type thermoelectric couple with 1.0mm diameter.

6.4.1.2 Measurement of nozzle jetting rate
Put one container for collecting extinguishing agent under each nozzle, start the device. When the jetting is over, weigh the container filled with extinguishing agent under each nozzle, calculate the jetting rate of each nozzle. The nozzle corresponded to the container with the smallest extinguishing agent mass is the nozzle of the lowest jetting rate.

6.4.2 The deep fryer fire extinguishing test

6.4.2.1 The dimensions of the deep fryer is provided by the manufacturing unit according to the manual, the depth should be no smaller than 229cm and the sections should be of the same shape; the heating source is electric stove, gas stove or propane stove; the self-ignition point of fuel should be no lower than cooking oil of 357℃.

6.4.2.2 Fill the cooking oil into the tested fryer, make the oil surface 86mm from the upper fryer edge (the measurement of oil surface should be done when the oil is heated to 288℃~315℃); put the thermoelectric couple 25mm under the oil surface and no less than 76mm to the side wall, start the temperature measurement meter and make it under normal operation conditions. Turn the heating source to the largest power and ensure that the heating rate of oil be no slower than 7℃/min, heat the cooking oil to self ignition point under this condition, start time counting when the burning oil temperature is higher than 363℃, 2 minutes later, shut off the heating source and manually start the extinguishing device to put out the fire.

6.4.2.3 Observe and record the temperature change of the cooking oil in the tested fryer and extinguishing time.

6.4.3 Work fire extinguishing test

6.4.3.1 The test is done with two largest and two smallest works specified in the design manual provided by the manufacturing unit; the heating source is electric stove, gas stove or propane stove; the self-ignition point of fuel should be no lower than cooking oil of 349℃.

6.4.3.2 When conducting fire extinguishing test with the largest work, make the oil surface 86mm from the work edge and no smaller than 25mm from the work bottom (the measurement of oil surface height should be done when the oil is heated to 288℃~315℃); put the thermoelectric couple 13mm under the oil surface and no less than 76mm to the side wall, start the temperature measurement meter and make it under normal operation conditions. Heat the cooking oil to self ignition point with heating source, start time counting when the burning oil temperature is higher than 363℃, 2 minutes later, shut off the heating source and manually start the extinguishing device to put out the fire.

6.4.3.3 When conducting fire extinguishing test with the smallest work, put the largest work at the edge of the smallest work.

6.4.3.4 Observe and record the temperature change of the cooking oil in the tested work and extinguishing time.

6.5 Fume Hood Fire and Exhaust Pipe Fire Extinguishing Test

6.5.1 Test preparation
The test should be done under following conditions:
a) Before test, put the extinguishing agent storage container assemblies and expellant gas container assemblies filled with rated amount and storage pressure under the lowest storage temperature for over 16 hours;
b) The pipeline, pipe fittings, extinguishing agent filling amount, nozzle arrangement, quantity and installation height and other values should conform to the technical documents and manuals provided by the manufacturing unit;
c) The nozzle should be installed at the most unfavorable location and angle allowed in the design manual; and should be tested under the lowest jetting rate;
d) Temperature measurement is done by the thermoelectric couple immersed in oil, which should be K-type thermoelectric couple with 1.0mm diameter;
e) The fuel is vegetable oil or animal oil;
f) The heating source is natural gas burner, propane burner, portable torch or other similar igniting devices with the heating power being no smaller than 15.825kJ/min. Do not use flammable liquid such as petrol and diesel oil;
g) The devices for fume hood fire and exhaust pipe fire extinguishing test are shown in Figure 1.

6.5.2 Structure and dimensions of fume hood and exhaust pipe

6.5.2.1 Fume hood

6.5.2.1.1 The structure and dimensions of fume hood should adopt the maximal value specified in the design manual of the manufacturing unit.

6.5.2.1.2 The width of fume hood can use 1.2m, when wider than 1.2m, the increment should be 0.3m as the basic width.

6.5.2.1.3 The length of fume hood can use 1.2m, 1.7m, 2.4m, 3.6m, 4.2m, 4.9m, 6.1m or 7.3m, when longer than 7.3m, the increment should be 1.8m as the basic length.

6.5.2.1.4 The fume hood should be made with steel sheet of thickness no smaller than 2.0mm.

6.5.2.2 The filter screen and frame in fume hood
The frame of filter screen in fume hood should be in V shape that is installed along the entire length direction of the fume hood. The frame of filter screen can adopt angle iron of 50mm×50mm with thickness no smaller than 3mm for manufacturing. The filter screen can use steel wire gauze of 50mm thickness for manufacturing and installed on the two surfaces of V-shaped frame, with the angle of 45°±10°, as shown in Figure 1.

Description:
1. Horizontal apron;
2. Air regulating flashboard;
3. Blower;
4. Air inlet hole;
5. Angle iron bracket;
6. Filter screen;
7. 7-Fume hood;
-Exhaust pipeline length;
-Each segment is 1.32m long; c-0mm~914mm.

6.5.2.3 Exhaust pipe

6.5.2.3.1 The exhaust pipe includes rectangular and round structures. When using rectangular exhaust pipe as the model for fire extinguishing test, the test result can substitute that of round exhaust pipe with the same perimeter, while using round exhaust pipe as the model for fire extinguishing test, the test result cannot substitute that of rectangular exhaust pipe with the same perimeter.

6.5.2.3.2 The structure and dimensions of exhaust pipe should adopt the largest value specified in the design manual of the manufacturing unit.

6.5.2.3.3 The perimeter of rectangular exhaust pipe can use 1.2m, 1.9m, 2.5m, 3.2m, 3.8m, 7.6m and or larger ones. The perimeter of round exhaust pipe can use 0.6m, 0.8m, 1.0m, 2.4m or larger ones. The longer side of rectangular exhaust pipe is in horizontal direction, and the ratio of the vertical side to horizontal side is (1:2) ±10%.

6.5.2.3.4 The length of exhaust pipe can use 6m, 15m, 23m or intermediate value among them (to be determined by the manufacturing unit).

6.5.2.3.5 To facilitate inspection and painting inside the exhaust pipe, set one window every 2.4m at least along the length direction of the exhaust pipe. The cover of each window and the interface of each segment of exhaust pipe should equip sealing pad made by heat resistant materials. Set one bracket every 2.4m at least along the length direction of the exhaust pipe, inclining 25.4mm to 76.2mm to the side equipped with fume hood every 10m along the length direction of the exhaust pipe.

6.5.2.3.6 The fume hood and exhaust pipe should be connected with one column no higher than 914mm. Equip one portable horizontal apron at the connection point of the column and exhaust pipe. To adjust the air flow speed in the filter screen and exhaust pipe, equip one blower and air regulating valve (air regulating flashboard) at the outlet of the exhaust pipe.

6.5.3 Fire extinguishing test

6.5.3.1 Evenly spray or wipe the tested fuel (vegetable oil or animal oil) onto the internal surface of the fume hood, filter screen and exhaust pipe, the amount sprayed or wiped to the exhaust pipe should be no less than 1.5kg/m2, and the amount onto the fume hood and filter screen should be no less than 3.7kg/m2.

6.5.3.2 Equip two thermoelectric couples respectively at 3.6m and 6.1m inside the exhaust pipe. The thermoelectric couples should be located at the center of exhaust pipe section and connected to the temperature measurement meter, start the temperature measurement meter and make it under normal operation condition.

6.5.3.3 When testing, use an oil pan of the largest dimensions specified in the design manual of the manufacturing unit, fill the test fuel in 6.4.2.2 into the pan and ignite it, put the oil pan with fire under the fume hood to ignite the fume hood and filter screen. Or directly ignite the fume hood and filter screen with portable igniter.

6.5.3.4 Open the end of the exhaust pipe, when igniting the fume hood and filter screen, ignite the fuel in exhaust pipe with the igniter, when the temperature of the thermoelectric couple at 3.6m inside the exhaust pipe is higher than 871℃, or that at 6.1m inside the exhaust pipe is higher than 649℃, shut off all igniters. When the igniters are off and the temperature of thermoelectric couple at 6.1m inside the exhaust pipe remains higher than 482℃, the igniting is successful.

6.5.3.5 After successful igniting, close the end of the exhaust pipe and start time counting, 30s later, manually start the device to put out fire. Observe the temperature changes inside the exhaust pipe after the device jets.

6.5.3.6 Repeat the tests of 6.5.3.1~6.5.3.4, after successful igniting, keep open the end of exhaust pipe and start time counting, 30s later, manually start the device to put out fire. Observe the temperature changes inside the exhaust pipe after the device jets.

6.5.4 Fire extinguishing test under ventilation condition

6.5.4.1 Open the end of exhaust pipe and connect to the blower, start the blower before wiping oil onto the fume hood and filter screen, regulate the air flow rate inside the exhaust pipe to 2.5m/s~5.1m/s.

6.5.4.2 Conduct fire extinguishing test under ventilation condition based on 6.5.3 test conditions, when the air flow rate inside the exhaust pipe reaches the upper limit and the flame on fume hood (filter) reaches the strongest level when observed with naked eyes, manually start the device to put fire, observe the whether the flame is put out after the device jets and the temperature changes inside the exhaust pipe.

6.6 Anti-splash Test

6.6.1 Test preparation
The test should be done under following conditions:
a) The test should be done indoor;
b) Before test, put the extinguishing agent storage container assemblies and expellant gas container assemblies filled with rated amount and storage pressure under the highest storage temperature for over 16 hours;
c) The test should be done under conditions of the smallest pipe diameter, fewest branches and shortest pipeline allowable by the fire extinguishing device design;
d) The test cooking utensils should be set under the nozzle providing the largest jetting rate;
e) Temperature measurement is done by the thermoelectric couple immersed in oil, which should be K-type thermoelectric couple with 1.0mm diameter;

6.6.2 Anti-splash test when extinguishing fire
The cooking utensils for test are the deep fryer and work of same size in 6.4.2.1 and 6.4.3.1, and the fuel and amount, igniting source, arrangement of thermoelectric couple, temperature measurement as well as igniting process should all conform to the corresponding fire extinguishing test methods. After starting the device, observe whether there is burning oil splashing out during jetting.

6.6.3 Anti-splash test under cooking temperature

6.6.3.1 The cooking utensils for test are the deep fryer and work of same size in 6.4.2.1 and 6.4.3.1, and the fuel heating source should all conform to the corresponding fire extinguishing test methods.

6.6.3.1 Fill the cooking oil into the tested cooking utensil, make the oil surface 76mm from the upper utensil edge (the measurement of oil surface should be done when the oil is heated to 177℃~191℃); put the thermoelectric couple 25mm under the oil surface and 76mm to the side wall, start the temperature measurement meter and make it under normal operation conditions. Put a metal plate with the width no less than 762mm respectively at the front and side of the cooking utensil, scatter dry saleratus powders no thicker than 1.6mm onto the plates. Ignite the fire source, heat the oil to normal cooking temperature (177℃~191℃), shut off the fire source and manually start the fire extinguishing device. Stop jetting after 3s~5s, observe whether there are splashed oil spots on the metal plate, measure the spot size.

6.7 Internal Plastic Element Test of Container Assemblies
Conduct according to 7.12.3.2 in GB4351.1-2005

6.8 Container assemblies vibration test

6.8.1 The stored-pressure extinguishing agent storage container assemblies should be filled with extinguishing agent and pressured to the maximal extent allowed by the design; expellant gas storage container assemblies should be filled with expellant air to the maximal extent allowed by the design.

6.8.2 Before test, equip precise pressure gauge with 0.4 precision level for inspection on the sample.

6.8.3 The test is done on the vibration table, change the vibration directions along three mutually perpendicular axial lines of X, Y and Z to test.

6.8.4 When testing, the amplitude is 0.8mm, the frequency is 20Hz and the vibration time is 2 hours at each direction.

6.8.5 After test, inspect and record the internal pressure in the stored-pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies.

6.9 The performance test of expellant gas storage container assemblies on resistance to high and low temperature
The test is done in temperature test chamber. Before test, the expellant gas storage container assemblies should be filled with expellant air to the maximal extent allowed by the design and record the pressure value.
Put under the following temperature conditions for 24 hours respectively in following order:
a) The highest operating temperature of device±2℃;
b) The lowest operating temperature of device±2℃;
c) The highest operating temperature of device±2℃;
d) The lowest operating temperature of device±2℃;
e) The highest operating temperature of device±2℃;
f) The lowest operating temperature of device±2℃;
After above cycle test, put the tested sample under 25℃±5℃ condition for 24 days and then terminate the test.
After test, read the pressure value in the container assemblies and compare it with that before test.

6.10 Basic performance test of pressure display Conduct according to 6.34 in GB 16669-2010.

6.11 Control panel test

6.11.1 Power source test of control panel
The tested control panel is under normal monitoring condition, connect it to adjustable power source, and charge standby batteries to normal operation condition.
Adjust the power source voltage to 187Va.c~242Va.c, with the frequency being 50Hz±1Hz. Make all circuits of the control panel under alarm and driving jetting condition, inspect operating condition. Cut off the primary power source, after the standby batteries are in normal monitoring condition for 24 hours, make one circuit of the control panel under alarm and driving jetting condition, inspect operating condition..

6.11.2 Control, alarm function inspection
Make the tested control panel under normal monitoring condition, compare to design drawing and technical documents, visible inspect the control and alarm function of the control panel with general measurement tools.
Acoustic measurement adopts sound level meter.

6.11.3 Other performance inspection
The other performance test of control panel of power-started device should conform to GA 61-2010.

6.12 Salt Fog Corrosion Test
Conduct test according to Chapter 11 of GB/T 25208-2010. The mass concentration of sodium chloride solution is (20±0.1)%, the test lasting time is 10 days. After test, inspect the corrosion condition of the sample.

6.13 Ammonia residual stress resistance test
Conduct test according to Chapter 12 of GB/T 25208-2010.
After test, clean and dry the sample, inspect the corrosion condition of the sample.

6.14 Medium corrosion test

6.14.1 Put the container storing extinguishing agent into test chamber, subject to 8 cycles according to the test temperature and time specified in Table 3.

6.14.2 When the test is over, release the extinguishing agent in the container, compare it to the same extinguishing agent before test, observe and record whether the extinguishing agent shows color change; cut the container into half, observe and record the internal corrosion condition.

Step Test temperature Lasting time
1 The lowest operating temperature of device±2 24±1 2 +20±5 >24
3 The highest operating temperature of device±2 24±1 4 +20±5 >24

6.15 Sealing test

6.15.1 Air pressure sealing test

6.15.1.1 Air sealing test can use nitrogen or compressed air, the precision of pressure measurement meter should be no lower than 1.6 level, and the air pressure source in the test device should be adjustable within (0~0.5)MPa/s range of pressure increase rate. The leakage inspection water temperature should be no lower than 5℃.

6.15.1.2 Connect stored-pressure extinguishing agent storage container assemblies and expellant gas storage container assemblies to the air pressure source, slowly increase the pressure to the largest operating pressure at a pressure increase rate no larger than 0.5 MPa/s, and the pressure maintaining time is 5 min. Immerse the sample into water, the immersion depth should be no smaller than 0.3m, inspect and record sample leakage condition within the pressure maintaining period.

6.15.1.3 Make the reducing valve, linkage-controlled gas valve under Off condition, the gas check valve in positive condition and connect it to the air pressure source, slowly increase the pressure to the largest operating pressure at a pressure increase rate no larger than 0.5 MPa/s, and the pressure maintaining time is 5 min. Immerse the sample into water, the immersion depth should be no smaller than 0.3m, inspect and record sample leakage condition within the pressure maintaining period.

6.15.1.4 Make the reducing valve, linkage-controlled gas valve under On condition, the gas check valve in reverse condition, repeat 6.15.1.3, Inspect the sample and record the result.

6.15.2 Water pressure sealing test

6.15.2.1 Water pressure sealing test device should use water as pressure medium, water temperature should be no lower than 5℃, the precision of pressure measurement meter should be no lower than 1.6 level, and the structure of test device should ensure no external force to the bottle body.

6.15.2.2 Non-stored-pressure extinguishing agent storage container assemblies, linkage-controlled water flow valve, liquid check valve (respectively in positive and reverse conditions), connection pipe and other parts should undergo water pressure test respectively. During test, first increase to the largest pressure and then decrease, repeat for many times to eliminate air in water; then slowly and evenly increase to the largest operating pressure, remain for 5 min under this pressure and carefully observe the test result.

6.16 Strength test

6.16.1 The hydraulic source for hydraulic strength test device should have pressure stabilizing function that can eliminate pressure pulse, the precision of pressure measurement meter should be no lower than 1.6 level, and the pressure increase rate of test device should be adjustable within (0~0.5)MPa/s.

6.16.2 Slowly increase the pressure of tested sample passing sealing test to test pressure at a rate no larger than 0.5MPa/s, and remain for 5 min, the test pressure is 1.5 times of the largest operating pressure. Inspect the sample and record the result.

6.17 Operation reliability test

6.17.1 Operation reliability test of container valve

6.17.1.1 The operation reliability test of container valve is done on special test device. The pressure source adopts water or compressed air (determined according to the medium in container); the volume of special test container and the operating conditions of control driving part should satisfy that the tested valve can be fully open after being started.

6.17.1.2 Equip the tested valve onto special test container, connect to the control driving part and make it operate under specified conditions in following procedures:
a) Fill the tested valve to container storage pressure, the remaining time should be no shorter than 5s;
b) Start the control driving part to open the tested valve;
c) Shut off the tested valve when the pressure in the special test container is lowered to 0.2MPa;
d) Fill pressure to the tested valve and proceed with next cycle.
For parts of tested valve allowed to damage during normal operation, timely replace after each cycle test.

6.17.1.3 Repeat the above steps for 100 times under normal temperature, put the test device and samples into temperature test chamber, repeat for 10 times respectively under the lowest and highest temperatures. For the stay time of samples in test environment before test, it should be no shorter than 2 hours for the first time, while other tests should fully balance the sample temperature with the temperature inside test chamber.

6.17.2 Operation reliability test of linkage-controlled water flow valve

6.17.2.1 Linkage-controlled water flow valve of electromagnetic system
The test is done under normal temperature, equip the tested valve on water pressure test table, connect to power and make it under normal operating condition, conduct according to the following steps:
a) Press the tested valve to nominal operating pressure (provided by the manufacturing unit) and the remaining time is no shorter than 5s;
b) Connect to power and open the tested valve under rated operating voltage;
c) When the pressure is lower than 0.05MPa, shut off the tested valve;
d) Pressure the valve again and proceed with next cycle.
Repeat the above steps for 100 times, then repeat 5 times respectively under±15% of rated operating voltage. Inspect the sample and record the result.

6.17.2.2 Linkage-controlled water flow valve of gas dynamic type
The test is done under normal temperature, equip the tested valve on water pressure test table, connect to hydraulic source on the positive side, the expellant air source use compressed air or nitrogen, and connect to the reverse side of the tested valve, conduct according to the following steps:
a) Fill water pressure to the tested valve at positive side to nominal operating pressure (provided by the manufacturing unit) and the remaining time is no shorter than 5s;
b) Fill air pressure to the opening pressure of the linkage-controlled water flow valve to open the tested valve;
c) Lower the air pressure to 0 to make the tested valve close under water pressure influence;
d) Press the tested valve again and proceed with next cycle.
Repeat the above steps for 100 times. Inspect the sample and record the result.

6.17.3 Operation reliability test of linkage-controlled gas valve

6.17.3.1 Linkage-controlled gas valve of power type
The test is done under normal temperature, equip the tested valve on special test table, connect to power and make it under normal operating condition, conduct according to the following steps:
a) Press the tested valve in open condition to nominal operating pressure and the remaining time is no shorter than 5s;
b) Connect to power to rated operating pressure to close the tested valve;
c) When the pressure in special test pipeline is lower than 0.05MPa, open the tested valve;
d) Pressure the valve again and proceed with next cycle.
e) Repeat the above steps for 100 times, then repeat 5 times respectively under±15% of rated operating voltage. Inspect the sample and record the result.

6.17.3.2 Linkage-controlled gas valve of mechanical type
The test is done under normal temperature, the air source adopts compressed air or nitrogen. Equip the tested valve on special test table, connect to control driving parts and make it operate under specified condition, conduct according to the following steps:
a) Press the tested valve in open condition to nominal operating pressure and the remaining time is no shorter than 5s;
b) Start the control driving part to close the tested valve;
c) When the pressure in special test pipeline is lower than 0.05MPa, open the tested valve;
d) Pressure the valve again and proceed with next cycle.
e) Repeat the above steps for 100 times. Inspect the sample and record the result.

6.17.4 Operation reliability test of check valve

6.17.4.1 The operation reliability test of check valve is done on special test device, the gas or liquid flow of the tested device should guarantee that the check valve can fully open during test.

6.17.4.2 The test is done under normal temperature, fill pressure to the positive and reverse sides of the check valve in order, the pressure is the operating pressure of the check valve, make the valve reach fully open or closed condition, the switch frequency between positive and reverse direction should be no larger than 30times/min. After open-off cycle for 100 times, Inspect the sample and record the result.

6.17.5 Operation reliability test of driver

6.17.5.1 The reliability test condition, procedures and time requirement of driver are the same as 6.17.1.

6.17.5.2 Adjust the driver load to the maximal load value, when conducting the operation reliability test of driver and the operation reliability test of container valve at the same time, if the driver sample can be used for the driving of valves of various models and specifications, the valve requiring the largest driving force should be used.

6.17.5.3 The PQ value of expellant gas pressure of drive of gas dynamic type is provided by the manufacturing unit. The pressure control precision during test should not be lower than ±5%. When the PQ value provided is within one voltage range, use the smallest value for test.

6.17.5.4 Driver of electromagnetic type. Conduct reliability tests for 100 times under normal temperature at rated operating voltage, 10 times under the lowest temperature and 10 times under the highest temperature. 5 tests under the lowest temperature and the highest temperature respectively should be conducted at ±15% of rated operating voltage.

6.17.5.5 Driver of igniting type. Conduct reliability tests for 80 times under normal temperature at rated operating voltage, 10 times respectively at ±15% of rated operating voltage. For dual igniting driver, install one electric igniter once during each test.

6.17.5.6 Reliability test of mechanical driver under normal, the lowest and the highest operating temperature, conduct with hand or auxiliary tools, and the start frequency should be no larger than 6 times/min.

6.17.5.7 During the reliability test of driver, for each test cycle, make judgment about action quality and counter.

6.18 Reducing characteristic test of reducing valve
The test medium adopts nitrogen or compressed air, equip the nozzle provided by the manufacturing unit at the end of the test device pipeline, the inlet pressure and outlet pressure of the reducing valve should adopt automatic measurement. The precision of record meters should be no lower than 0.4 level. The volume of air pressure source should satisfy the jetting time for measuring parameters.

Install the reducing valve onto the test device according to operating position (see Table 2), adjust the test device pressure to the storage pressure of the expellant gas storage container. Start the control valve in test device and measure the pressure value at all points.

Description:
1. Air source
2. Reducing and stabilizing valve
3. Pressure gauge
4. Control valve
5. Pressure sensor
6. Nozzle
7. Extinguishing agent storage container assemblies
8. Test valve
9. Stabilizing air source

6.19 Opening pressure test of the check valve
Opening pressure test of the check valve adopts special test devices for operation reliability defined in 6.17.4.1, and the precision of pressure gauge should be no lower than 0.4 level.
Connect the inlet of tested valve to the test device, with the valve in positive closed status. Slowly increase the pressure of the control device, record the pressure when the air jets out, namely, the opening pressure value, the test should be done at least 3 times.

6.20 Nozzle test

6.20.1 Structure
Visibly inspect whether that nozzle structure has equipped protection cap preventing the jet orifice from being obstructed by foreign substance.

6.20.2 Anti-shock test
The anti-shock test of nozzle should be conducted according to 6.23 in GB 16669-2010, inspect the nozzle conditions after test.

6.20.3 High temperature resistance test
Put the nozzle without protection cap into high temperature test chamber with temperature of 600℃ ± 20℃, take it out after 15 minutes and immerse it into water of 15℃ ± 2℃ immediately, inspect after the nozzle cools.

6.21 Thermal detector test

6.21.1 Action temperature test of thermal detector

6.21.1.1 The test is done in liquid bath, put the thermal detector with rated action temperature of 74℃ into water (distilled water is recommended), while the thermal detector with rated action temperature higher than 74℃ should be done in oil bath. The temperature of test liquid bath should be even, the temperature difference in test zone should not exceed 0.5℃. The action temperature of thermal detector should use Level 2 standard glass thermometer.

6.21.1.2 Put at least 2 thermal detectors into the test liquid bath (when the thermal detector is soluble alloy element, the soluble alloy element should be installed in clamps that can add the smallest design load published by the manufacturing unit, put it with clamp together into to the test liquid bath), heat the test liquid bath from room temperature to 20℃±2℃ below the rated action temperature with an increase rate no larger than 20℃/min, and keep this temperature for 10 min. Then heat at the rate of 0.5℃/min±0.1℃/min until the thermal detector acts. Record the action temperature of the thermal detector.

6.21.2 Thermal stability test of the thermal detector

6.21.2.1 Put two thermal detector samples into 20℃±5℃ environment for at least 30 min before test.

6.21.2.2 Immerse the thermal detector into liquid bath, the temperature of liquid bath should be 16℃±2℃ below the rated action temperature of the thermal detector, the temperature difference in test zone should not exceed ±1℃. 5 min later, remove the thermal detector from the liquid bath and immerse it into liquid bath of 10℃±1℃ to see whether it will act.

6.22 Measurement of the driving force of driver
Conduct according to 7.2.2 in GA 61-2010.

7. Inspection Rules

7.1 Inspection Classification
Device inspection includes factory inspection and type inspection. Table 4 shows inspection items and nonconforming types.

7.2 Factory Inspection

7.2.1 The device can only be delivered out of the factory after being fully inspected by the Quality Inspection Department of the manufacturing unit according to the inspection items in Table 4 and issued with quality certificate.

7.2.2 Each set of devices and all parts of full inspection items should be inspected respectively.

7.2.3 The sampling items should be done batch by batch. The manufacturing unit should reasonably define each batch according to production quantity and contract, but it should not be more than 50 sets. The quantity of samples should be no fewer than 10% of batch product quantity.

7.3 Type Inspection

7.3.1 Type inspection should be done when one of the following conditions occurs:
a) Trail production, type determination and identification of new product;
b) After formal production, product structure, materials and process and the like have major change that may affect product performance;
c) Restore production after stop production for more than 1 year;
d) Requirement of mandatory product access;
e) Material quality incident occurs;
f) Order from the quality supervision agency.

7.3.2 The type inspection items should be all items in Table 4.

7.3.3 The sample quantity of type inspection should conform to Table 5. The sampling base of type inspection parts should be 5 times of that in Table 5. The parts adopt one-time random sampling and the device is installed with sampled parts.

7.4 Judgment of Inspection Results

7.4.1 Type inspection
When all type inspection items conform to standards, the device is conforming to standard. When one of the following conditions occur, it is nonconforming:
-A item occurs;
-2 and more B items occur;
-4 and more C items occur;
-1 B item occurs and 2 and more C items occur.

7.4.2 Factory inspection
When all factory inspection items conform to standards, the device is conforming to standard.
When one factory inspection item is A item, the device will be nonconforming; If B item or C item occurs, double sampling inspection is allowed, if there is still nonconforming item, the device will be nonconforming.

8. Requirement on Manual Preparation
The device should be delivered with manual. The manual content must conform to GB/T 9969 and include at least:
a) Device introduction (including operating principle);
b) Main performance parameters of device, such as operating temperature range, action temperature of thermal detector, operating pressure, jetting time, delay time, lowest jetting rate and lowest operating pressure of nozzle;
c) Device demonstration drawing;
d) Device operation procedure
e) Name, model and specification and main performance parameters of parts;
f) Installation, use and maintenance manual;
g) Filling method of extinguishing agent and expellant gas;
h) Safety cautions;
i) Implementing standard number;
j) After-sale service
k) Name, address and telephone number of the manufacturing unit.