Some standard content:
ICS. 13. 340. 20
People’s Republic of China Public Safety Industry Standard GA296—2001
Police service helmets
Service helmets for police
2001-02-15 Published
Sinochem Guoshi
Implemented on 2001-08-01
GA 296---2001
All technical contents of this standard are mandatory. Previous
This standard is based on GB811-1998 "Motorcycle Passenger Helmet", combined with the performance characteristics of the police service helmet itself, with reference to GB2811-1989 "Safety Helmet", GB/T2812-1989% Safety Helmet Test Methods". Appendix A and Appendix B of this standard are appendices to the standard. This standard was proposed by the Equipment Finance Bureau of the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Technical Committee for Standardization of Police Equipment and Uniforms of the Ministry of Public Security. This standard is drafted by the Traffic Safety Product Quality Supervision and Inspection Center of the Ministry of Public Security, with Baoding Public Security Helmet Factory and Shenyang 3523 Factory participating in the drafting.
The main drafters of this standard: Jin Tongming, Zhang Yong, Fang Lizhuang, Wang Hongzhu, Liu Hechun. This standard was first released on February 15, 2001. 1
1 Scope
People’s Republic of China Public Safety Industry Standard Police Service Helmets
Service helmets for police
GA 296—2001
This standard stipulates It provides the definition, product classification and naming, requirements, test methods, inspection rules, marking, packaging, transportation and storage of police service helmets.
This standard applies to police service helmets.
2 Reference standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication of this standard, the versions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB191-2000 Packaging, storage and transportation pictorial mark
GB811-1998 Motorcycle rider helmet
GB/T31811995 paint film color standard
GB/T3978-1994 standard lighting body and lighting observation conditions GB/T10000—1988 Chinese adult human body dimensions GB/T16422.2—1999 Plastic laboratory light source exposure test methods Part 2: Xenon arc lamp (idtISO4892-2:1994) GA270—2001
Police clothing cap badge
3 Definitions
This standard adopts the following definitions.
3.1 Police service helmets (hereinafter referred to as helmets) are police equipment used to protect the heads of service personnel. 3.2 Testing area testingarea
The area for testing designated on the helmet. The test area of the shell is the entire shell. 3.3 Basic plane basic plane
The horizontal plane determined by the left and right tragus points and the suborbital point, also called the head horizontal plane (see Figure 1) [3.10 of GB8111998], 3.4 mid-sagittal plane||tt| |A plane that bisects the head perpendicularly to the basal plane and the coronal plane and symmetrically (see Figure 1). 3.5 Coronal plane coronal plane
The plane passing through the center of the auricle and perpendicular to the base plane and the midline plane (see Figure 1). The Ministry of Public Security of the People's Republic of China approved the implementation on 2001-08-01 on 2001-02-15
Basic plane
Head side view
4 Product classification and naming
4.1 Classification
GA 296—2001
Figure 1 Head plane diagram
Helmets are divided into three specifications: small (S), medium (M), and large (L). 4.2 Naming
The helmet model is named according to the following structure and requirements: 00-0
Specification (L or M or S)
Lost face
Product name code ( The Chinese pinyin capital letter of the service helmet is QWK) Example: The product model of the large service helmet is QWK-L. 5 Requirements
5.1 Appearance requirements
5.1.1 Appearance
The appearance of the helmet should comply with the requirements of Appendix A (Standard Appendix). 5.1.2 Logo
Helmet logo should comply with the requirements of Appendix A.
5.1.3 Cap Badge
The cap badge uses the Type 99 Police Clothing Hat Badge [GA270]. See Appendix A for the installation dimensions. 5.1.4 Color
The color of the outer surface of the helmet is porcelain white.
5.2 Structural Requirements
The helmet consists of a shell, a wearing device, etc. 5.2.1 Shell
a) The shell should not have defects such as dents, chips, sharp corners, etc.; b) There should be no hard protrusions exceeding 7mm on the outer surface, and no hard protrusions exceeding 3mm on the inner surface. Projection. 5.2.2 Wearing device
5.2.2.1 The wearing structure should ensure firm and comfortable wearing and easy release. 5.2.2.2 Tie width
Tie width is 20mm±2mm.
5.2.2.3 Strength performance
Crown plane
Top view of the head
Conduct the test according to the provisions of 6.3. The helmet shall not have laces torn or the connectors to fall off. and buckles loosening, and the above phenomena shall not occur during the test specified in 6.4 2
.
5.3 size
GA 296--2001
Helmets are divided into three specifications: small (S), medium (M) and large (L) according to the head circumference in GB/T10000 , its dimensions are shown in Table 1. Table 1 Helmet specifications and dimensions
Small (S)
Medium (M)
Large (L)
5.4 Helmet quality (including accessories)
Helmet The mass is no more than 1kg.
5.5 Helmet collision energy absorption performance
The test shall be carried out according to the method specified in 6.4 and shall meet the requirements given in Table 2. Table 2 Helmet collision energy absorption performance requirements
Peak acceleration
Action time exceeding 150g
Shell condition
5.6 Helmet penetration resistance performance
≤ 400g
Applicable head circumference size
540~560
560~580
580~600
Performance requirements
During the test There shall be no cracks in the shell
The test shall be carried out according to the method specified in 6.5, and the steel cone shall not penetrate the helmet and come into contact with the head shape. 5.7 Helmet weather resistance
The test shall be carried out in accordance with the provisions of 6.6. The outer surface of the helmet shall have no obvious erosion, deformation or discoloration. 6 Test method
6.1 Appearance, structural requirements and specifications of the helmet 6.1.1 Test device
Length measuring instrument: The graduation value is 0.5mm. Shape card plate: Made according to the shape of the helmet's sagittal plane and crown plane, see Appendix A. Standard chromaticity sample: complies with GB/T3181 regulations. Colorimeter accuracy: △r: 0.02,
Ay: 0.02.
Head shape: Comply with the provisions of Appendix B (Standard Appendix) B2.1. 6.1.2 Test steps
a) Use length measuring instruments and shape cards to measure the helmet’s shape, logo, and the position and size of the cap emblem; mm
b) Use standard colorimetric samples and specimens, and Perform visual comparison under the standard D65 light source specified in GB/T3978 to qualitatively determine whether it meets the specified chromaticity requirements; if there is any objection to the qualitative judgment of visual comparison, the standard D65 light source that complies with GB/T3978 should be used. Measurement geometric conditions: 0/d, use a colorimeter to detect the appearance color and chroma of the helmet; c) Use a length measuring instrument to detect the hard protrusions on the inner and outer surfaces of the helmet; d) Use a head shape of corresponding specifications to measure the specifications and dimensions of the helmet; e) The test results shall comply with the provisions of 5.1, 5.2 and 5.3. 6.2 Helmet mass
GA 296—2001
Use a scale with a graduation value of 0.01kg to weigh and record the mass of the helmet. The test results shall comply with the provisions of 5.4. 6.3 Helmet wearing device testing
6.3.1 Test device
Length measuring instrument: the graduation value is 0.5mm; wearing device strength tester: in addition to 6.6.1 of GB811-1998, it should also Meet the following requirements: a) Simulated lowering device: the distance from the top of the head to the simulated lowering device should be less than 250mm; b) Test head shape: comply with the provisions of B2.1 in Appendix B 6.3.2 Test steps
a) Measure the width of the helmet strap with a length measuring device; b) Wear the helmet properly on the corresponding head shape, pass the strap through the simulated lower cheek and tighten it, apply a load of 23kg ± 0.5kg, maintain for 2 minutes, and observe the strength of the wearing device;
c) The test results should comply with the provisions of 5.2.2. 6.4 Helmet collision energy absorption performance test
6.4.1 Pretreatment
The conditions for helmet pretreatment are shown in Table 3.
Table 3 Helmet pretreatment
50℃±2℃
-10℃±2℃
Room temperature (water spray volume is 15L/min)
Note: The helmet sample must be treated according to the provisions of Table 3 before it can be inspected. Select one treatment for each helmet sample. After high and low temperature treatment, the helmet samples should complete one test within 5 minutes. For the second test, the helmet samples should be placed back in the incubator and treated for more than 20 minutes before the test can be carried out; the helmet samples treated with rain should be placed for 5 minutes before the test; this process should be repeated until all tests are completed. However, the total treatment time of the helmet cannot exceed the time specified in the table. 6.4.2 Test device
The collision test bench meets the requirements of 6.7.2.1 of GB811-1998. The test head shape shall meet the requirements of B2.2 in Appendix B. The test and analysis instrument system shall meet the requirements of 6.7.2.2 of GB811--1998, with a frequency response range of 0.1~6000Hz and a maximum impact acceleration of 200km/s2 peak.
6.4.3 Test steps
a) According to the provisions of 6.4.1, each helmet shall be pre-treated at one option; b) The acceleration sensor shall be rigidly fixed to the head shape collision detection position, and the angle between the sensor sensitive axis and the normal line of the head shape collision point shall not be greater than 5°;
c) Wear the helmet that has undergone pre-test treatment on the corresponding head shape, fasten the straps, and conduct the test according to the test conditions in Table 4: d) The test results shall comply with the provisions of 5.5.
Table 4 Test conditions for the performance of helmets absorbing collision energy Anvil
Flat anvil
1000mm±5mm
6.5 Test for the penetration resistance of helmets
6.5.1 Test device
Testing location
Any two locations in the test area, the distance between two adjacent locations shall not be less than 120mm
Number of collisions at each location
GA 296-2001
The drop-type penetration test bench shall comply with the provisions of 6.8.2 of GB811-1998. The test head shape shall comply with the provisions of B2.1 in Appendix B and be fixed horizontally on the bottom foundation of the drop bench. 6.5.2 Test steps
The test shall be carried out at room temperature in accordance with the requirements of 6.8.3 of GB811--1998. The test conditions for the penetration resistance of helmets are shown in Table 5, and the test results shall comply with the provisions of 5.6.
Table 5:
Test conditions for penetration resistance of helmets
Number of tests
Mass of steel cone
3+g\kg
Note: Drop height is the vertical distance from the tip of the steel cone to the headform test point. 6.6 Weathering performance test
6.6.1 Test device
The test device shall meet the requirements of GB/T16422.2. 6.6.2 Test steps
Height of steel cone drop
1000mm±5mm
The distance between two test parts
Not less than 75mm
a) Fix the helmet on the sample rack and carry out aging test according to the following requirements: The radiation intensity of the helmet is 1000W/m\, the radiation intensity deviation is not more than ±10%, the blackboard temperature is 63℃±3℃, the relative humidity is 65%±5%, and the water spraying cycle is 18min/102min (water spraying time/no water spraying time). Every 24h is a test cycle, irradiation for 20h, stop irradiation for 4h, and the test duration is 7 cycles; b) The test results should comply with the provisions of 5.7.
7 Inspection rules
7.1 Inspection classification
Helmet inspection is divided into type inspection and factory inspection. 7.2 Type inspection
7.2.1 Type inspection shall be conducted in any of the following cases: a) Trial production inspection of new products;
b) Transfer of old products to another factory;
c) When production is resumed after a year of suspension;
d) When the structure, main raw materials and major process of the product are changed, which may affect the product performance;
f) When the superior quality supervision and management department proposes type inspection. 7.2.2 Number of sample helmets
7 sample helmets, 6 for testing and 1 for reserve.
7.2.3 Sampling
The sampling base is 50.
7.2.4 Test items and sequence
The test items and sequence shall be carried out in accordance with Table 6.
Table 6 Type test items and sequence
Test items
Appearance, structure, specifications and dimensions
Performance of wearing device
Absorbing impact energy halo performance
Performance requirements Clause Test method Clause
Test items
Penetration resistance
Weather resistance
Note: "" in the table indicates that this test is carried out. 7.3 Factory inspection
7.3.1 Sampling base
GA 296—2001
Table 6 (end)
Performance requirements Clause Test method Clause
For helmets with the same structure, material and process conditions, 2000 helmets shall be a test batch (if less than one batch is calculated), and 6 helmets shall be sampled from each batch.
Test items and sequence
The test items and sequence shall be carried out in accordance with Table 7.
Table 7 Factory inspection items and sequence
7.4 Determination of unqualified
Inspection items
Appearance, structure, specifications and dimensions
Performance of wearing device
Penetration resistance
Technical requirements clauses
5.1, 5.2, 5.3
Test method clauses
In the sample helmet inspection, if a single indicator of a performance is unqualified, the inspected batch of products shall be judged to be unqualified. The enterprise may improve the products and conduct a second inspection, but the number of sample helmets shall be twice that of the first inspection. If the second inspection still fails, the batch of products shall be judged to be unqualified. 8
Marking, packaging, transportation and storage
8.1 Marking
Each helmet should have the following permanent markings: a) product name (in Chinese), model, specifications; b) manufacturer name;
c) trademark;
d) production date, product batch number or serial number. 8.2 Packaging
8.2.1 The product packaging box should have the product name, quantity, quality, specifications, production date, manufacturer, moisture-proof and handle with care markings, and comply with the provisions of GB191.
8.2.2 Each product should be accompanied by a product certificate and product use and maintenance instructions. The product use and maintenance instructions should include the following: a) This type of helmet is not suitable for motorcycle riders; b) The specifications and dimensions of the helmet;
c) The straps must be fastened during use;
d) The helmet should not be used if a major collision accident occurs; e) Take care to store it, do not use corrosive solvents to scrub the surface of the helmet, and do not hit the helmet; f) The service life.
8.3 Transportation
The product should be tightly covered during transportation, and it is strictly forbidden to be exposed to rain, moisture, exposure to the sun, and high-temperature baking. It is strictly forbidden to drop, hit, or pile it up. 8.4 Storage
8.4.1 The product should be stored in a ventilated and dry warehouse, keeping it more than 250mm above the ground, with a gap of not less than 200mm around it. 8.4.2 The product cannot be stored with corrosive substances and should be kept away from high temperatures and heat sources. 6
B1 Scope
GA 296—2001
Appendix B
(Appendix to the standard)
Test head form
This appendix specifies the test head form for police duty helmets. B2 Test head form
All the following test head forms are divided into three sizes: small, medium and large. See Figure 5 and Table 6 of GB811-1998. According to the purpose, they are divided into two types: general test head form and collision test head form. B2.1 General test head form
B2.2 Collision test head form
The head form is made of a structure and metal material that approximates the frequency response of the human head. The total mass of the falling head form (including sensors and connectors) is 4+1kg for small, 5+1kg for medium and 6+1kg for large (wherein the mass of the sensors and connectors is not more than 25% of the total mass of the falling head form).
As shown in Figure A1.
Non-uniform 5 rational B-spline by lineman
missing surface
blue reflective film
non-reduced rational B-group line!
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(Standard appendix)
Police front inspection helmet type
Marking requirements: ||tt| |A Paste the words "POLICE" in bold type in English to the left side of the view, with a character height of 33 and a character length of 108 (chord length); paste the Chinese characters in bold type "Inspector" or "Police Lei" on the right side with a character height of 40 and a character length of 108 ( Chord length) material is blue reflective film. The ribbon material is the same as the text, and it is required to be pasted according to the size shown in the picture. The police dynamic helmet inspection picture, logo picture, and appearance card board picture are non-uniform and rational B-splines.
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0-108. 588952,47, 177882|| TT || 0,109, 341336,42. 273906 || TT || 37.358556 || TT || 2.110.01546 || TT || 0,110. 708330, 32.45793 || TT || 0,111, 555151 || || tt | |0.120 , 737708,4, 684915
0,123, 500000,0. 564300000000 Figure A1
(Standard appendix)
Police front inspection helmet type
Logo requirements:
A paste the bold English to the left side of the view\ POLICE", with a character height of 33 and a character length of 108 (string length); on the right side, the words "Inspector" or "Police Tired" in bold are pasted, with a character height of 40 and a character length of 108 (string length). The material is blue reflective film. Ribbon The materials and text are the same, and they are required to be pasted according to the size shown. The non-uniform rational B-splines of the police helmet inspection helmet shape diagram, logo diagram, and outline card diagram are composed of lines B
0, 123, 500000, 0. , 564300
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0,105, 942568,61. 824497| |tt | 481942,86.0101075 || TT || .90.725476 || TT || 97.229768.95.383186 || TT || 0,95. 373882,99, 984179 || TT || 104.515415 || TT || 0, 91, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348, 152348. 108. 961273 | 944880||tt ||0,61 501809.141, 704968
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0.43, 759378,150 , 313392
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0-65. 723652,138. 944880
0,69, 663687,135, 930936
0,73. 407224,132. 676143
0.76, 939601,129, 193324
0.80. 245569,125, 494886
0-83, 312805,121. 596184
0.86, 145405,117, 523639
0- 88, 754254,113. 304132
0,91, 152348,108. 951273
0,93, 353804.104, 515415
0-95, 373882,95, 984179||tt ||0,97, 229768,95, 38318
0.98. 938436,90, 725470
0,100, 481942,86, 010575
0-101- 823309-81 234301|| tt | |0-106, 867366,56, 950029
0.107, 756925,$2. 069018
0-108. 588952,47, 177882
0,109, 341336,42. 273906|| TT || 37.358556 || TT || 2.110.01546 || TT || 0,110. 708330, 32.45793 || TT || 0,111, 541906,27, 555151 || TT || 0,112.22. 717479 || tt | 0,123 , 500000,0. 564300000000 Figure A1
(Standard appendix)
Police front inspection helmet type
Logo requirements:
A paste the bold English to the left side of the view\ POLICE", with a character height of 33 and a character length of 108 (string length); on the right side, the words "Inspector" or "Police Tired" in bold are pasted, with a character height of 40 and a character length of 108 (string length). The material is blue reflective film. Ribbon The materials and text are the same, and they are required to be pasted according to the size shown. The non-uniform rational B-splines of the police helmet inspection helmet shape diagram, logo diagram, and outline card diagram are composed of lines B
0, 123, 500000, 0. , 564300
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0.109, 341336.42. 273906
37.358556
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0.110. 708330.32. 445793
0.111, 541906.27, 555151
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0.115. 994974.13, 392538
0.118. 220776-8. 959542
0.120, 737708.4, 684915
0.123, 500000.0. 564300
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