Some standard content:
National Standard of the People's Republic of China
Portable mechanical foam fire extinguishers
Portable foam fire extinguishers1 Subject content and scope of application
GB15368-94
This standard specifies the types, specifications and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and other requirements of portable mechanical foam fire extinguishers. This standard applies to portable foam fire extinguishers (hereinafter referred to as fire extinguishers) filled with mechanical foam fire extinguishing agents (hereinafter referred to as fire extinguishing agents). 2 Reference standards
General thread tolerances and fits (diameter 1 ~ 355mm) GB197
GB/T1804 General tolerances for linear dimensions of steel fusion welded butt joints without tolerances Radiography and quality classification GB33234
Industrial gaseous nitrogen
GB 3864
GB4351 General technical requirements for portable fire extinguishers GB12515 Portable pressurized dry powder fire extinguishers
GN 11 Method for compiling fire product models
ZBC84007 Protein foam fire extinguishing agent and fluoroprotein foam fire extinguishing agent 3 Types, specifications and basic parameters
3.1 Type and marking
3.1.1 This fire extinguisher is a pressure storage type or gas cylinder type mechanical foam fire extinguisher. According to the mixing order of the mechanical foam fire extinguishing agent liquid and clean water, there are the following types:
Premixed type: The mechanical foam fire extinguishing agent liquid and clean water are mixed in proportion in advance and then loaded into the fire extinguisher together. a.
b. Separate type: The mechanical foam fire extinguishing agent liquid and clean water are separately packaged in the fire extinguisher, and the two liquids are mixed in proportion when in use. 3.1.2 Marking example
The model marking of the fire extinguisher shall be in accordance with the provisions of GN11. M
3.2 Specifications
Approved by the State Administration of Technical Supervision on December 21, 1994466
GB15368
Standard number
Fire extinguishing agent filling quantity, L
Split type (premixed type without characteristic code) Pressure storage type (gas cylinder type without characteristic code) Mechanical foam fire extinguishing agent code
Fire extinguisher code
Implementation on July 1, 1995
GB15368-94
The specifications of fire extinguishers are divided according to the amount of foam fire extinguishing agent mixture (hereinafter referred to as fire extinguishing dosage), and the specifications are divided into 3L, (4L), 6L, and 9L.
Note: The specifications in brackets are not preferred. 3.3 Basic parameters
3.3.1 When the fire extinguisher is at 20±5℃, its performance parameters shall comply with the provisions of Table 1. Table 1
Fire extinguishing agent filling quantity, L
Effective spraying time, s
Effective spraying distance, m
Spraying lag time, s
Spraying residual rate, %
Foaming multiple, times
25% liquid separation time, s
Note: The specifications in brackets are not preferred. (4L)
Protein foam fire extinguishing agent ≥6.0
Water-forming and synthetic foam fire extinguishing agent ≥5.0Protein foam fire extinguishing agent ≥90.0
Water-forming and synthetic foam fire extinguishing agent ≥60.03.3.2 When the fire extinguisher is at 20±5℃, its ability to extinguish Class A and Class B fires shall comply with the provisions of Table 2. Table 2
A, B fire test
Equipment specifications
34L
Fire extinguishing agent
A, B fire test
3.3.3 At 20±5℃, the ability of the fire extinguisher to extinguish ethanol fire shall comply with the provisions of Table 3. Table 3
Ethanol fire test level
Fire extinguisher specifications
3L, 4L
Equipment specifications
Fire extinguishing agent
Fire extinguishing agent
3.3.4 The operating temperature range of the fire extinguisher shall comply with the provisions of Article 3.3.1 of GB4351. The recommended operating temperature range of this standard is 4～55℃ or -10～－55℃.
The spray performance at the highest or lowest operating temperature shall meet the following requirements: a.
The deviation of the effective spray time shall not exceed ±25% of the effective spray time at 20±5℃; b.
The spray delay time shall not exceed 5s;
c. The spray residual rate shall not exceed 10%.
GB15368-94
3.3.5 For fire extinguishers that can spray intermittently, the intermittent spray delay time shall not exceed 3s. 3.3.6 The total weight of the fire extinguisher shall not exceed 20kg. 4 Technical requirements
4.1 Mechanical strength
4.1.1 The wall thickness design of the fire extinguisher cylinder and gas storage cylinder shall comply with the provisions of Appendix A (Supplement) in GB12515. 4.1.2 The cylinder of the fire extinguisher, the head under internal pressure, the connecting parts between the head and the cylinder, and the gas cylinder shall be subjected to a water pressure test in accordance with the provisions of Article 3.6.2 of GB4351.
4.1.3 The measured bursting pressure of the fire extinguisher shall satisfy the calculation result of formula (1): Pp ≥ 0. 95 D
Where: Pb-——measured bursting pressure of the cylinder (gauge pressure), MPa; D. —external diameter of the cylinder, mm;
tensile strength of the material at room temperature, N/mm2; nominal wall thickness of the cylinder, mm.
The bursting hole of the cylinder shall be plastically damaged, and no fragments shall be produced during the explosion. 4.1.4 The measured bursting pressure of the gas cylinder shall satisfy the calculation result of formula (2): 20pt
Pp ≥ D. -t.
Where: Pb——measured value of bursting pressure of gas cylinder (gauge pressure), MPa; ab-guaranteed value of tensile strength of gas cylinder material after heat treatment, N/mm; ta-measured minimum wall thickness of gas cylinder, mm;
D. Outer diameter of gas cylinder, mm.
The bursting mouth of gas cylinder should be plastically damaged, and there should be no fragments after the explosion. 4.1.5 The vibration resistance of fire extinguishers shall comply with the provisions of Articles 3.6.4 and 3.6.5 of GB4351. 4.1.6 The impact performance of fire extinguishers shall comply with the provisions of Article 3.6.6 of GB4351. 4.2 Structure
4.2.1 The requirements for the operating mechanism of fire extinguishers shall comply with the provisions of Article 3.10.1 of GB4351. 4.2.2 Fire extinguishers shall be equipped with a pressure relief structure to ensure automatic pressure relief when disassembled under hysteresis. (1)
4.2.3 When the filling volume of a pressure-stored fire extinguisher is greater than or equal to 4L, it should be equipped with an intermittent spray mechanism and a spray hose. The sealing of the intermittent spray mechanism should be reliable, and its requirements should comply with the provisions of Article 3.5.3 of GB4351. The length of the spray hose should not be less than 80% of the height of the fire extinguisher cylinder; the spray hose should be a pressure-resistant, insulated braided hose, and its bursting pressure should be greater than 3.5 times the maximum pressure it can withstand at 60°C, and should not be less than 3.0 MPa. 4.2.4 The spray hose and the joint should have reliable connection strength, and should not leak or fall off after a water pressure test of 1.5 times the design pressure or a tensile test of 400N.
4.2.5 A pressure-stored fire extinguisher should be equipped with a device that can display its internal pressure, and its requirements should comply with the provisions of Article 3.8 of GB4351. 4.2.6 A filter or other structure shall be installed before the minimum cross section of the fire extinguisher's injection channel. The mesh cross section of the filter shall be smaller than the minimum cross section, and the total effective flow cross-sectional area of the filter shall not be less than 5 times the minimum channel area. 4.2.7 The fire extinguisher shall have obvious filling level markings to prevent overfilling. 4.3 Gas cylinders
GB15368--94
4.3.1 The filling coefficient of carbon dioxide gas cylinders shall not be greater than 0.67g/mL. 4.3.2 Carbon dioxide gas cylinders shall be equipped with overpressure safety protection devices, and their requirements shall comply with the provisions of Article 3.10.5 of GB4351. 4.3.3 The body of the gas cylinder shall adopt a seamless structure. 4.3.4 The purity of carbon dioxide filled in the gas cylinder shall not be less than 98%. 4.4 Foam spray gun
4.4.1 The foam spray gun shall have sufficient strength, and the pressure-bearing parts of the gun body shall be subjected to a 3.0MPa water pressure test without rupture or falling off. 4.4.2 The flow channel of the foam spray gun shall be free of burrs and other defects that affect the spraying. 4.4.3 After the foam spray gun is tested according to the method in Article 5.16, there shall be no defects such as breakage and falling off that affect the spraying. 4.5 MaterialsWww.bzxZ.net
4.5.1 The material of the fire extinguisher body and gas cylinder is calm steel, and it shall meet the requirements of the operating temperature range. The chemical composition and mechanical properties of the material shall comply with the provisions of the relevant standards.
4.5.2 The main parts of the fire extinguisher head and other materials shall be made of copper alloy, aluminum alloy, stainless steel and other materials, and their chemical composition and mechanical properties shall comply with the provisions of the relevant standards.
4.5.3 The protein foam fire extinguishing agent and fluoroprotein foam fire extinguishing agent filled in the fire extinguisher shall comply with the provisions of ZBC84007, and other mechanical foam fire extinguishing agents shall comply with the provisions of the corresponding standards. 4.5.4 The nitrogen used to drive the fire extinguisher shall comply with the provisions of GB3864. 4.5.5 The additives used to reduce the freezing point of the fire extinguishing agent shall not affect the performance of the fire extinguisher. 4.5.6 The performance of the fire extinguisher head or foam spray gun made of non-metallic materials such as plastic shall comply with the following provisions. 4.5.6.1 The performance of the non-metallic materials such as plastic used shall comply with the provisions of the relevant standards. 4.5.6.2 The head parts shall be subjected to aging test according to the method of Article 5.18. After the test, its burst strength shall not be less than the calculated value of the simplified burst strength, and shall not break after the impact test.
4.5.6.3 The foam spray gun parts shall be subjected to aging test according to the method of Article 5.18. After the test, the pressure-bearing parts of the gun body shall be subjected to a water pressure test of 2.0MPa pressure and shall not break; they shall not break after the drop test according to Article 5.16. 4.5.7 The performance of the rubber and plastic parts inside the fire extinguisher shall comply with the provisions of Article 3.9 of GB4351. 4.6 Manufacturing
4.6.1 The body of the fire extinguisher can be manufactured by welding, stretching or spinning; the gas cylinder should be manufactured by hot spinning. 4.6.2 The weld of the fire extinguisher should be uniform and should not have visible cracks, pores, isolated pits, undercuts, slag inclusions, incomplete penetration and other defects. For the cylinder body using radiographic flaw detection, the weld flaw detection inspection should be in accordance with the provisions of GB3323, and the weld quality should meet the requirements of Level 3. 4.6.3 The surface of sheet metal and impact parts should be free of defects such as heavy skin, wrinkles and obvious mechanical damage. 4.6.4 The surface of cast and forged parts should be free of heavy skin, scars, flash, etc., and there should be no visible shrinkage, pores, sand holes, cracks and insufficient pouring inside that affect the strength.
4.6.5 The machining tolerance grade of metal parts without dimension notes shall comply with the provisions of IT14 grade in GB1804, and the machining tolerance grade of non-metal parts without dimension notes shall comply with the provisions of IT16 grade in GB1804. 4.6.6 The thread tolerance of parts shall comply with the provisions of 7H grade for internal thread and 8g grade for external thread in GB197. 4.6.7 The exterior of the fire extinguisher shall be resistant to atmospheric corrosion, and its requirements shall comply with the provisions of Article 3.7.1 of GB4351. 4.6.8 The interior of the fire extinguisher shall be resistant to corrosion by the fire extinguishing agent, and its requirements shall comply with the provisions of Article 3.7.2 of GB4351. If a coating is used, it shall not affect the performance of the fire extinguisher. After the internal corrosion test, the spraying time, spraying residual rate, foam expansion multiple and 25% liquid separation time of the fire extinguisher shall comply with the provisions of Table 1. 4.7 Sealing performance
4.7.1 During the use of the fire extinguisher, there shall be no visible leakage at the joints. 4.7.2 The body and head of the pressure-type fire extinguisher shall be able to withstand the airtightness test of the design pressure value, and there shall be no visible leakage bubbles during the immersion test.
4.7.3 After the gas cylinder is filled, there shall be no visible leakage bubbles when tested according to the method of Article 5.11.2. 469
GB15368—94
4.7.4 The overall sealing performance of the fire extinguisher shall comply with the provisions of Article 3.5 of GB4351. 4.8 Appearance quality
4.8.1 The color of the coating on the surface of the fire extinguisher shall be uniform, without obvious defects such as flow marks, cracks, bubbles, scratches and mechanical damage. 4.8.2 The decals shall be straight, flat, without missing edges or words; without obvious wrinkles, bubbles and other defects. They shall not fall off after the external corrosion test. 5 Test method
5.1 Spray performance test. Install the fire extinguisher on the test stand, the spray angle is not more than 30° and the nozzle is 1m above the ground, and then spray.
5.1.1 The test methods for effective spray time, spray lag time and spray residual rate shall comply with the provisions of Article 4.1.1 of GB4351. 5.1.2 The effective spray distance test shall be carried out simultaneously with the test in Article 5.1.1. During the test, foam receiving discs shall be placed 3m in front of the spray direction, 2 in each row, for a total of 20 rows. The outer dimensions of the foam receiving disc are 25cm×25cm×5cm. After the continuous spray test, weigh the weight of the foam received in each row, and the horizontal distance from the center of the row of receiving discs with the largest weight to the nozzle is the effective spray distance. 5.1.3 For fire extinguishers that can spray intermittently, the intermittent spray test method shall comply with the provisions of Article 4.1.2 of GB4351. 5.2 The method of testing the spray performance of fire extinguishers within the operating temperature range shall comply with the provisions of Article 4.2 of GB4351. 5.3 The test method of fire extinguishers for extinguishing Class A and Class B fires shall comply with the provisions of Articles 4.3 and 4.4 of GB4351. The test model of fire extinguishers for extinguishing ethanol fires consists of a circular disk with industrial ethanol of no less than 95% placed in it. The circular disk is made of steel plate with a wall thickness of no more than 3mm and a depth of no more than 200mm. The width of the reinforced edge of the disk edge shall not exceed 50mm. The thickness of ethanol shall not be less than 50mm, and clean water shall not be added. During the fire extinguishing test, pre-burn for 180s, and the remaining test methods shall comply with the provisions of Article 4.4 of GB4351. 5.4 The method of water pressure test of fire extinguishers shall comply with the provisions of Article 4.6.1 of GB4351. 5.5 The method of explosion test of fire extinguishers shall comply with the provisions of Article 4.6.2 of GB4351. 5.6 The method of vibration test of fire extinguisher shall be in accordance with the provisions of Article 4.7 of GB4351. 5.7 The method of impact test of fire extinguisher shall be in accordance with the provisions of Article 4.8 of GB4351. 5.8 The method of external corrosion test of fire extinguisher shall be in accordance with the provisions of Article 4.9.1 of GB4351. 5.9 For internal corrosion test of fire extinguisher, first put the fire extinguisher upright in a 55-9℃ environment for 21 days, then put it in a room at room temperature for 70 days, take it out at the end of the period, and measure the spray time, spray residual rate, foam multiple and 25% liquid separation time according to the methods of Articles 5.1 and 5.17. Then remove the fire extinguisher head, clean the inside and surface of the fire extinguisher with warm water, and check the corrosion of the inner surface and surface of the components after drying. The results shall meet the provisions of Article 4.6.8.
5.10 The method of performance test of rubber and plastic parts for fire extinguisher shall be in accordance with the provisions of Article 4.11 of GB4351. 5.11 The sealing test of fire extinguishers shall be carried out in accordance with the provisions of Article 4.5 of GB4351. 5.11.1 The manufacturer shall conduct an airtightness test on each pressure-type fire extinguisher. During the test, the filled fire extinguisher (without the spray hose or foam spray gun) shall be immersed in clean water with a water temperature of not less than 5°C. The water level shall be 50mm higher than the top of the fire extinguisher, and it shall be kept for 10 minutes. During the test, the fire extinguisher shall be observed carefully. There shall be no visible leakage bubbles. 5.11.2 The gas cylinder of the gas cylinder fire extinguisher shall be tested for airtightness. During the test, the filled gas cylinder shall be immersed in warm water of 55+5°C. The water level shall be 50mm higher than the top of the gas cylinder, and it shall be kept for 10 minutes. During the test, the gas cylinder shall be observed carefully. There shall be no visible leakage bubbles. 5.12 The method of the explosion test of the spray hose and joint shall be in accordance with the provisions of Article 4.13 of GB4351. The tensile test of the connection strength of the spray hose and the joint can be determined by the tensile test; it can also be replaced by a magnetic code weight. The accuracy of the code should not be less than 5. 5.13 The method of the performance test of the internal pressure display of the pressure storage type fire extinguisher shall be in accordance with the provisions of Article 4.10 of GB4351. 5.14 The method of the performance test of the operating mechanism of the fire extinguisher shall be in accordance with the provisions of Article 4.12 of GB4351. 5.15 Foam spray gun water pressure test, the mixed liquid outlet of the foam spray gun is blocked, and then the test is carried out according to the method of Article 4.6.1 of GB4351. The result shall comply with the provisions of Article 4.4.1.
5.16 Foam spray gun drop test. The nozzle of the foam spray gun is dropped freely from a height of 1.5m to the concrete floor at three positions: upward, downward and horizontal of the spray gun axis. The result shall comply with the provisions of Article 4.4.3. 5.17 Determination of the foaming multiple and 25% liquid separation time of the fire extinguisher. 470
5.17.1 Test instruments and equipment
Stopwatch, 1/100 S;
Measuring cup, 1000ml, graduation value 10mL;
Eluent analyzer, see figure;
GB 15368-94
Foam flow plate, length 900mm, width 700mm, thickness more than 1mm; scraper, length 200mm, width 20mm, thickness 5mm; glass thermometer, range 0～100℃, graduation value 1℃. g100
Low-power foam liquid analyzer
1-Foam receiving tank; 2-Screen (aperture 0.125mm), 3-Eluent water receiving tank 5.17.2 Test preparation
5.17.2.1Put the fire extinguisher in an environment of 20±5℃ and keep it for more than 24h. 5.17.2.2 The measuring cup is used as a foaming multiple determination device. First, clean the measuring cup and fill it with clean water at 20±5℃. Weigh W (accurate to g), then pour out the water, wipe the outer wall and drain the water on the inner wall, and then weigh the empty cup (accurate to g). The difference between the two weights is regarded as the volume value of the measuring cup. Measure the same measuring cup three times and take the average value. 5.17.2.3 Use clean water to clean the foam receiving tank of the liquid analyzer (pay attention to whether the screen in the liquid analyzer is blocked by foreign matter), drain the water on the inner wall, wipe the outer wall, and weigh the empty container W accurately.g), remove the liquid collection tank under the liquid analyzer, weigh the weight W2 (accurate to g), and then install it on the foam receiving tank. 5.17.2.4 The foam flow plate is placed firmly at 45° to the ground, and then the measuring cup and liquid analyzer are placed under the foam flow plate, so that the foam can smoothly enter the measuring cup and the liquid analyzer.
5.17.3 Test steps
5.17.3.1 Take the fire extinguisher out of the 20±5℃ environment, spray within 1min, and start the fire extinguisher to spray for 10s at a distance of 4m from the foam flow plate. Then let the sprayed foam hit the flow plate. When the measuring cup is full, immediately scrape the edge and put it aside. Use the liquid analyzer to receive the foam. When the foam enters the liquid analyzer, start the stopwatch. After it is full, immediately scrape the edge. 5.17.3.2 Wipe off the foam on the outer wall of the foam receiving tank and weigh its weight W3, (accurate to g), and calculate the 25% effluent weight 25%W - W, -W
Where: 25%W——25% effluent weight, g; W:----total weight of the foam receiving tank filled with foam, g; W,—weight of the foam receiving tank, g.
5.17.3.3Calculation of 25% effluent time
· (3)
Put the effluent measuring instrument on the bracket, remove the effluent water collecting tank at the bottom of the effluent measuring instrument, and put it on an electronic scale (or a tray balance). When the weight reaches 25%W+W, stop the stopwatch. This time is the 25% effluent time. 5.17.3.4 Calculation of Foaming Multiple
Wipe off the foam on the outer wall of the multiple measuring device (measuring cup), weigh its weight Ws, (accurate to g), and calculate the foaming multiple N according to the following formula. Nn
The volume of the multiple measuring device, mL;
Wherein: V-
The weight of the multiple measuring device filled with foam, g; The weight of the multiple measuring device, 8,
p-The density of the mixed liquid. (1 g/mL). V
5.17.3.525% liquid separation time and foaming multiple should take the normal value of two tests as the measurement result. 5.18 Aging test of non-metallic parts such as plastics 5.18.1 The aging test adopts artificial accelerated aging test, and the light source is a 6000W water-cooled tubular xenon lamp. ..(4)
5.18.2 Six specimens of plastic and other non-metallic heads or foam spray gun parts are vertically suspended on the outer edge of a support tube with a diameter of 960 mm and a height of 520 mm. The support tube rotates continuously around the common axis of the xenon lamp and the tube at a speed of 1 r/min. 5.18.3 The test chamber temperature is 55 ± 5 °C, the relative humidity is 70% to 80%, the rainfall cycle is 12 minutes per hour, and the rainfall water pressure is not less than 0.1 MPa (gauge pressure).
5.18.4 The test cycle is 480 hours, continuous irradiation, and the machine is stopped every 48 hours after startup to check the specimens. After 192 hours, the machine is stopped every 96 hours for inspection. After each inspection, the upper and lower positions of the specimens are interchanged, and the machine is immediately restarted to continue the test. 5.18.5 When the test expires, the temperature is reduced to 20 ± 5 °C, maintained for 5 hours, and then inspection is carried out. 5.18.5.1 The three samples of the head shall be subjected to burst test according to the method in Article 5.5, and the other three samples shall be subjected to impact test according to the method in Article 5.7. 5.18.5.2 The three samples of the foam spray gun shall be subjected to water pressure test according to the method in Article 5.4, and the other three samples shall be subjected to drop test according to the method in Article 5.16. 6 Inspection rules
6.1 New and imported fire extinguishers shall be subjected to type inspection, and the type inspection shall be carried out for all items in accordance with the requirements of this standard. 6.2 After the fire extinguisher is finalized, when there are changes in the design, process, materials, etc. involving the performance or safety performance, a type change inspection shall be carried out. The change inspection shall be carried out in accordance with the provisions of this standard for items related to the type change and shall comply with the requirements of this standard. 6.3 Fire extinguishers shall be inspected by the inspection department of the manufacturer before leaving the factory and shall comply with the requirements of this standard. The inspection is divided into batch inspection and periodic inspection. 6.3.1 The sampling plan and result evaluation of batch inspection shall comply with the provisions of GB2828. The inspection items are: spray performance test at 20℃, sealing performance test, water pressure test, and burst test. 6.3.2 The sampling plan and result evaluation of periodic inspection shall comply with the provisions of GB2829. The inspection items are all the items specified in this standard. 472
7 Marking, packaging, transportation and storage
7.1 Marking
GB15368-94
The marking of fire extinguishers shall comply with the provisions of Chapter 6 of GB4351. 7.2 Packaging
7.2.1 The packaging of fire extinguishers shall ensure that they are not damaged or loose during normal transportation, and comply with the regulations of the transportation department. 7.2.2 The packaging of exported products shall comply with the regulations on export packaging. 7.2.3 The packaging box should have the following contents on its exterior: a.
Product name and specification or model;
Quantity inside (boxes);
Outer dimensions of the packaging box 1Xb×h (mm);
Total weight (kg);
Product year and month of manufacture or serial number;
Manufacturer name and address;
“Handle with care”, “Afraid of moisture”, “Afraid of heat”, etc. or other words or marks. 7.3 Transportation and storage
7.3.1 During transportation and storage, fire extinguishers should be kept away from being placed upside down, exposed to rain, exposed to the sun, strong radiation and contact with corrosive substances. 7.3.2 The storage environment temperature of fire extinguishers should be within the range of +4 to +45°C. 8.1 Maintenance of fire extinguishers during use:
8.1.1 The location where the fire extinguisher is placed should be kept dry and ventilated to prevent the cylinder from getting wet; it should be kept away from sunlight and strong radiant heat to avoid affecting the normal use of the fire extinguisher.
8.7.2 Fire extinguishers should be regularly inspected according to the requirements and inspection cycles specified by the manufacturer. 8.1.3 The inspection of fire extinguishers should be carried out by trained personnel. 8.2 Maintenance and refilling of fire extinguishers.
8.2.1 Once the fire extinguisher is opened, even if not much is sprayed, it must be refilled according to the specified requirements. Refilling should be carried out by a professional maintenance department according to the requirements and methods specified by the manufacturer. The type, weight and driving gas type and pressure of the fire extinguishing agent shall not be changed at will. 8.2.2 Before each refilling of the fire extinguisher, its main pressure-bearing parts, such as the head and cylinder, should be subjected to a water pressure test according to the provisions of Article 5.4 of this standard. Only those that pass the test can continue to be used. If the water pressure test fails, it is not allowed to be repaired and used by welding or other methods. 8.2.3 Fire extinguishers repaired by the maintenance department shall have the fire supervision department's approval mark and the name of the maintenance unit and the maintenance date. Additional notes:
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fifth Technical Committee of the National Fire Standardization Technical Committee. This standard was drafted by the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Kang Hongxiang, Shao Guoping and Dai Guoding. 47318 Aging test of plastic and other non-metallic parts 5.18.1 The aging test adopts artificial accelerated aging test, and the light source is a 6000W water-cooled tubular xenon lamp. ..(4)
5.18.2 Six samples of plastic and other non-metallic heads or foam spray gun parts are vertically hung on the outer edge of a support tube with a diameter of 960mm and a height of 520mm. The support tube rotates continuously around the common axis of the xenon lamp and the tube at a speed of 1r/min. 5.18.3 The temperature of the test chamber is 55±5℃, the relative humidity is 70%~80%, the rainfall cycle is 12 minutes per hour, and the rainfall water pressure is not less than 0.1 MPa (gauge pressure).
5.18.4 The test cycle is 480h, continuous irradiation, and the machine is stopped every 48h to check the samples after starting. After 192h, the machine is stopped every 96h for inspection. After each inspection, the upper and lower positions of the samples are interchanged, and the machine is turned on to continue the test. 5.18.5 When the test is due, lower the temperature to 20 ± 5℃ and keep it for 5 hours before submitting for inspection. 5.18.5.1 The 3 samples of the head shall be subjected to burst test according to the method in Article 5.5, and the other 3 samples shall be subjected to impact test according to the method in Article 5.7. 5.18.5.2 The 3 samples of the foam spray gun shall be subjected to water pressure test according to the method in Article 5.4, and the other 3 samples shall be subjected to drop test according to the method in Article 5.16. 6 Inspection rules
6.1 New products and imported products of fire extinguishers shall be subjected to type inspection, and the type inspection shall be carried out for all items in accordance with the requirements of this standard. 6.2 After the fire extinguisher is finalized, when there are changes in the design, process, materials, etc. involving the performance or safety performance, a type change inspection shall be carried out. The change inspection shall be carried out in accordance with the provisions of this standard for items related to the type change and shall comply with the requirements of this standard. 6.3 Fire extinguishers shall be inspected by the inspection department of the manufacturer before leaving the factory and shall comply with the requirements of this standard. The inspection is divided into batch inspection and periodic inspection. 6.3.1 The sampling plan and result evaluation of batch inspection shall comply with the provisions of GB2828. The inspection items are: spray performance test at 20℃, sealing performance test, water pressure test, and burst test. 6.3.2 The sampling plan and result evaluation of periodic inspection shall comply with the provisions of GB2829. The inspection items are all the items specified in this standard. 472
7 Marking, packaging, transportation and storage
7.1 Marking
GB15368-94
The marking of fire extinguishers shall comply with the provisions of Chapter 6 of GB4351. 7.2 Packaging
7.2.1 The packaging of fire extinguishers shall ensure that they are not damaged or loose during normal transportation, and comply with the regulations of the transportation department. 7.2.2 The packaging of exported products shall comply with the regulations on export packaging. 7.2.3 The packaging box should have the following contents on its exterior: a.
Product name and specification or model;
Quantity inside (boxes);
Outer dimensions of the packaging box 1Xb×h (mm);
Total weight (kg);
Product year and month of manufacture or serial number;
Manufacturer name and address;
“Handle with care”, “Afraid of moisture”, “Afraid of heat”, etc. or other words or marks. 7.3 Transportation and storage
7.3.1 During transportation and storage, fire extinguishers should be kept away from being placed upside down, exposed to rain, exposed to the sun, strong radiation and contact with corrosive substances. 7.3.2 The storage environment temperature of fire extinguishers should be within the range of +4 to +45°C. 8.1 Maintenance of fire extinguishers during use:
8.1.1 The location where the fire extinguisher is placed should be kept dry and ventilated to prevent the cylinder from getting wet; it should be kept away from sunlight and strong radiant heat to avoid affecting the normal use of the fire extinguisher.
8.7.2 Fire extinguishers should be regularly inspected according to the requirements and inspection cycles specified by the manufacturer. 8.1.3 The inspection of fire extinguishers should be carried out by trained personnel. 8.2 Maintenance and refilling of fire extinguishers.
8.2.1 Once the fire extinguisher is opened, even if not much is sprayed, it must be refilled according to the specified requirements. Refilling should be carried out by a professional maintenance department according to the requirements and methods specified by the manufacturer. The type, weight and driving gas type and pressure of the fire extinguishing agent shall not be changed at will. 8.2.2 Before each refilling of the fire extinguisher, its main pressure-bearing parts, such as the head and cylinder, should be subjected to a water pressure test according to the provisions of Article 5.4 of this standard. Only those that pass the test can continue to be used. If the water pressure test fails, it is not allowed to be repaired and used by welding or other methods. 8.2.3 Fire extinguishers repaired by the maintenance department shall have the fire supervision department's approval mark and the name of the maintenance unit and the maintenance date. Additional notes:
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fifth Technical Committee of the National Fire Standardization Technical Committee. This standard was drafted by the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Kang Hongxiang, Shao Guoping and Dai Guoding. 47318 Aging test of plastic and other non-metallic parts 5.18.1 The aging test adopts artificial accelerated aging test, and the light source is a 6000W water-cooled tubular xenon lamp. ..(4)
5.18.2 Six samples of plastic and other non-metallic heads or foam spray gun parts are vertically hung on the outer edge of a support tube with a diameter of 960mm and a height of 520mm. The support tube rotates continuously around the common axis of the xenon lamp and the tube at a speed of 1r/min. 5.18.3 The temperature of the test chamber is 55±5℃, the relative humidity is 70%~80%, the rainfall cycle is 12 minutes per hour, and the rainfall water pressure is not less than 0.1 MPa (gauge pressure).
5.18.4 The test cycle is 480h, continuous irradiation, and the machine is stopped every 48h to check the samples after starting. After 192h, the machine is stopped every 96h for inspection. After each inspection, the upper and lower positions of the samples are interchanged, and the machine is turned on to continue the test. 5.18.5 When the test is due, lower the temperature to 20 ± 5℃ and keep it for 5 hours before submitting for inspection. 5.18.5.1 The 3 samples of the head shall be subjected to burst test according to the method in Article 5.5, and the other 3 samples shall be subjected to impact test according to the method in Article 5.7. 5.18.5.2 The 3 samples of the foam spray gun shall be subjected to water pressure test according to the method in Article 5.4, and the other 3 samples shall be subjected to drop test according to the method in Article 5.16. 6 Inspection rules
6.1 New products and imported products of fire extinguishers shall be subjected to type inspection, and the type inspection shall be carried out for all items in accordance with the requirements of this standard. 6.2 After the fire extinguisher is finalized, when there are changes in the design, process, materials, etc. involving the performance or safety performance, a type change inspection shall be carried out. The change inspection shall be carried out in accordance with the provisions of this standard for items related to the type change and shall comply with the requirements of this standard. 6.3 Fire extinguishers shall be inspected by the inspection department of the manufacturer before leaving the factory and shall comply with the requirements of this standard. The inspection is divided into batch inspection and periodic inspection. 6.3.1 The sampling plan and result evaluation of batch inspection shall comply with the provisions of GB2828. The inspection items are: spray performance test at 20℃, sealing performance test, water pressure test, and burst test. 6.3.2 The sampling plan and result evaluation of periodic inspection shall comply with the provisions of GB2829. The inspection items are all the items specified in this standard. 472
7 Marking, packaging, transportation and storage
7.1 Marking
GB15368-94
The marking of fire extinguishers shall comply with the provisions of Chapter 6 of GB4351. 7.2 Packaging
7.2.1 The packaging of fire extinguishers shall ensure that they are not damaged or loose during normal transportation, and comply with the regulations of the transportation department. 7.2.2 The packaging of exported products shall comply with the regulations on export packaging. 7.2.3 The packaging box should have the following contents on its exterior: a.
Product name and specification or model;
Quantity inside (boxes);
Outer dimensions of the packaging box 1Xb×h (mm);
Total weight (kg);
Product year and month of manufacture or serial number;
Manufacturer name and address;
“Handle with care”, “Afraid of moisture”, “Afraid of heat”, etc. or other words or marks. 7.3 Transportation and storage
7.3.1 During transportation and storage, fire extinguishers should be kept away from being placed upside down, exposed to rain, exposed to the sun, strong radiation and contact with corrosive substances. 7.3.2 The storage environment temperature of fire extinguishers should be within the range of +4 to +45°C. 8.1 Maintenance of fire extinguishers during use:
8.1.1 The location where the fire extinguisher is placed should be kept dry and ventilated to prevent the cylinder from getting wet; it should be kept away from sunlight and strong radiant heat to avoid affecting the normal use of the fire extinguisher.
8.7.2 Fire extinguishers should be regularly inspected according to the requirements and inspection cycles specified by the manufacturer. 8.1.3 The inspection of fire extinguishers should be carried out by trained personnel. 8.2 Maintenance and refilling of fire extinguishers.
8.2.1 Once the fire extinguisher is opened, even if not much is sprayed, it must be refilled according to the specified requirements. Refilling should be carried out by a professional maintenance department according to the requirements and methods specified by the manufacturer. The type, weight and driving gas type and pressure of the fire extinguishing agent shall not be changed at will. 8.2.2 Before each refilling of the fire extinguisher, its main pressure-bearing parts, such as the head and cylinder, should be subjected to a water pressure test according to the provisions of Article 5.4 of this standard. Only those that pass the test can continue to be used. If the water pressure test fails, it is not allowed to be repaired and used by welding or other methods. 8.2.3 Fire extinguishers repaired by the maintenance department shall have the fire supervision department's approval mark and the name of the maintenance unit and the maintenance date. Additional notes:
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fifth Technical Committee of the National Fire Standardization Technical Committee. This standard was drafted by the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Kang Hongxiang, Shao Guoping and Dai Guoding. 4734. Only those that pass the water pressure test may continue to be used. If the water pressure test fails, it is not allowed to be repaired and used by welding or other methods. 8.2.3 Fire extinguishers repaired by the maintenance department shall have the approval mark of the fire supervision department and the name of the maintenance unit and the maintenance date. Additional notes:
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fifth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Kang Hongxiang, Shao Guoping and Dai Guoding. 4734. Only those that pass the water pressure test may continue to be used. If the water pressure test fails, it is not allowed to be repaired and used by welding or other methods. 8.2.3 Fire extinguishers repaired by the maintenance department shall have the approval mark of the fire supervision department and the name of the maintenance unit and the maintenance date. Additional notes:
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fifth Technical Committee of the National Fire Protection Standardization Technical Committee. This standard was drafted by the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are Kang Hongxiang, Shao Guoping and Dai Guoding. 473
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