This standard specifies the fire resistance grade of safes, test piece requirements for fire resistance tests, test devices, test items, test procedures, fire resistance limit determination criteria and test reports. This standard applies to general-purpose safes. GB 16810-1997 Test method for fire resistance of safes GB16810-1997 Standard download and decompression password: www.bzxz.net

GB16810-1997 | | tt | | Foreword | At present, the quality of safes in our country often only pays attention to theft prevention, but ignores fire resistance. According to statistics, when a fire occurs, the property losses caused by the poor fire resistance of safes are quite serious. The purpose of formulating this standard is to unify the fire resistance performance of safes and provide a basis for inspection and supervision for manufacturers and regulatory authorities. This standard refers to the Japanese Industrial Standard JISS10371989 "Fire-resistant Cabinet Part 8." This standard specifies the fire resistance test methods for safes. 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 National Fire Protection Standardization Technical Committee. This standard is drafted by the Tianjin Fire Science Research Institute of the Ministry of Public Security. Drafters of this standard: Han Qingfa, Liu Xiaohui, Hu Jiyu. 197
National Standard of the People's Republic of China
Test methods for fire resistance of cotainers Subject content and scope of application
GB 16810---1997
This standard specifies the fire resistance grade of safes, test piece requirements for fire resistance tests, test devices, test items, test procedures, fire resistance limit determination criteria and test reports.
This standard applies to general-purpose safes. 2 Referenced standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions 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. GB 9978-88 Fire resistance test method for building components 3 Fire resistance grade
The fire resistance grade regulations of safes are shown in Table 1.
Table 1
Fire resistance grade code
3hc
2hc
1hc
3h
2h
1 h | Not less than 2h, the fire resistance limit of Grade 2 rapid heating and impact drop is not less than 1h, the fire resistance limit of Grade 3 rapid heating and impact drop is not less than 3h
The fire resistance limit is not less than 2h
The fire resistance limit is not less than 1h
4.1.1 Select representative products from each type of product as test pieces. For products with the same structure, material and wall thickness but different sizes, the largest one is selected as the test piece.
4.1.2 When conducting a fire resistance grade test of 3hc, 2hc or 1hc, the number of test pieces is two. When conducting a fire resistance grade test of 3h, 2h or 1h, the number of test pieces is one set.
4.2 Preparation
4.2.1 Before the test, a support should be set at the bottom of the specimen to prevent the steering wheel from melting during the fire resistance test and causing the specimen to tip over. 4.2.2 Use newsprint with a size of 148mm × 210mm and loosely roll it into a paper ball with a diameter of 6 to 7cm, and then place five paper balls evenly on each layer of the specimen (including drawers, etc.). State Bureau of Technical Supervision approved 198
1997-12-01 implementation on 1997-05-28
5 test device
5.1 test furnace
GB16810—1997||tt| |5.1.1 The test furnace should comply with the provisions of 3.1 heating conditions and 3.2 pressure conditions in GB9978-88, so that all sides of the test piece except the bottom can be evenly exposed to fire, and the flame cannot directly impact the test piece. 5.1.2 The test furnace should be able to bring the furnace temperature to 900°C within 10 minutes. 5.2 Furnace temperature measurement
The temperature measurement in the furnace should comply with the provisions of 2.3.1 Temperature measurement in the furnace in GB9978-88. The thermocouples are symmetrically arranged on the four sides of the specimen, with the number not less than 4, and their hot ends are 50mm away from the four sides of the specimen. 5.3 Measurement of the internal temperature of the specimen
The internal temperature of the specimen is measured using a thermocouple with a wire diameter of 0.5mm. The thermocouple is inserted into the hole at the bottom of the specimen, and the hole is blocked with refractory material.
5.4 Specimen lifting device
Set up lifting equipment to lift the specimen to the height required by this standard during the impact drop test. 5.5 Accuracy of measuring instrument
Temperature: Furnace temperature is 15℃,
Others: 5℃;
Pressure: ±5 Pa;
Time: ±10s.
6 test items
a) Standard heating test, conduct the test according to the provisions of 7.3. b) Rapid heating and impact drop test, conduct the test according to the provisions of 7.4. The test items and test contents corresponding to the fire resistance grade of the test piece are shown in Table 2. Table 2
Fire resistance grade code
3hc
2hc
The
3h
2h
1h||tt| |7Www.bzxZ.net
Test procedure
7.1 The beginning and end of the test
Test items
a) and b)
a) and b)||tt ||a) and b)
a)
a)
a)
Test content
Standard heating 3h and level 1 rapid heating and impact Drop test standard difficulty period 2h and 2-level rapid heating and impact drop test standard heating 1h and 3-level rapid heating and impact drop test standard heating 3h
standard heating 2h
standard heating 1h||tt ||When the thermocouple in the test furnace close to the center of the specimen records 50°C, it can be used as the starting time; at the same time, all manual and automatic measurement and observation systems should start working. Tests should be measured and recorded in accordance with the relevant provisions of this standard. When any of the conditions specified in Chapter 8 appears on the test piece during the test, the test shall be terminated immediately, or the test may also be terminated when the predetermined time has been reached even though the conditions specified in Chapter 8 do not occur. 7.2 Measurement
7.2.1 The temperature measurement in the furnace shall be carried out in accordance with the provisions of 5.1 and 5.2, and the temperature shall be measured continuously. 199 | | tt | X
Side view
i4ost
f
Picture 1
50+
50+
*||tt || The position of each point is 150 mm from the inner roof and 50 mm from the adjacent inner wall.
7.2.2.2 For a pair of double-door or sliding door test pieces, set a fifth thermocouple 50mm away from the inner surface of the door and 1/2 the height of the door gap. 7.2.2.3 For specimens with an internal height less than 300mm, a thermocouple may be arranged at one-half of the internal net height. 7.2.2.4 In addition to the above provisions, thermocouples should also be installed at the weak parts of the specimen. 7.2.2.5 For drawer-type specimens, the arrangement of thermocouples shall refer to 7.2.2.1~7.2.2.4. 7.3 Standard heating test procedures
7.3.1 Put the specimen upright into the test furnace and follow the procedures specified in 5.1 Heating tests were carried out under heating conditions and pressure conditions. 7.3.2 After reaching the heating time specified in Table 2, immediately take the specimen out of the test furnace and cool it with water. 7.3.3 Open the door or drawer of the test piece and check the discoloration, deterioration and handwriting recognition of the newsprint inserted. 7.4 Rapid heating and impact drop test steps 7.4.1 The time required for each stage of rapid heating and impact drop test is shown in Table 3. Table 3
Test items
1-level rapid heating well
impact drop test
2-level rapid heating and
impact drop test
Level 3 rapid heating and
impact drop test
first stage rapid heating test
min
60
45
30|| tt | |Second stage rapid heating test
min
60
30
will 4.1. Put the specified specimen into the test furnace, and make the furnace temperature reach 900°C within 10 minutes. The time to maintain this temperature is shown in Table 3. When performing a rapid heating test on a specimen, the temperature inside the specimen is not tested. 7.4.3 Impact drop test
After completing the test specified in 7.4.2, take out the specimen from the test furnace, immediately lift the specimen to a height of 4m, and then let it drop to a height of 200 meters with concrete ||tt| |GB 16810 -- 1997
as the basis, with a layer of ordinary clay bricks laid on the ground. The test specimen should be removed from the test furnace and dropped within 10 minutes. 7.4.4 For the level 3 rapid heating and impact drop test, after impact dropping the specimen, perform water cooling; then open the door or drawer and check the discoloration, deterioration and handwriting recognition of the inserted newsprint ball. 7.4.5 The second stage of rapid heating test
is rapid heating and impact drop test for Level 1 and Level 2. After the impact drop test, put the specimen back into the furnace and make the furnace temperature reach 900℃ within 5 minutes. , the time to maintain this temperature is shown in Table 3. 7.4.6 After the heating time is reached, immediately take out the specimen from the furnace and cool it with water; then open the door or drawer and check the discoloration, deterioration and handwriting recognition of the newsprint ball.
8 Judgment Criteria
When any of the following conditions occurs during the test, it means that the specimen reaches the fire resistance limit: a) The single point temperature inside the specimen exceeds 180°C; b) During the test , the specimen cracked. 9 Test report
The test report includes the following contents:
a) Name of the test commissioning unit;
b) Name of the manufacturer and model and specification of the test piece; c) Sample delivery form;
d) Standard number;
e) Test date;
f) Structural diagram, materials used, technical data, installation and other relevant instructions of the test piece g) Test data;
h) Observation record:
i) Photo record of the test process;
3) Discoloration, deterioration and handwriting recognition of the newsprint ball placed in the test piece; k) Test Conclusion:
1) Signed by the test host and the person in charge of the test unit, and stamped by the test unit. 201
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