Vietnam: What are the details of National Standard TCVN 9383: 2012 on testing the fire resistance of fire doors and shutter assemblies?
- What are the scope of regulation and reference documents in National Standard TCVN 9383: 2012 on fire resistance testing of fire doors and shutter assemblies in Vietnam?
- What are the requirements for testing the fire resistance of fire doors and shutter assemblies in Vietnam?
- What are the procedures for testing the fire resistance of fire doors and shutter assemblies in Vietnam?
What are the scope of regulation and reference documents in National Standard TCVN 9383: 2012 on fire resistance testing of fire doors and shutter assemblies in Vietnam?
In Section 1, Section 2 of National Standard TCVN 9383: 2012 on fire resistance testing of fire doors and shutter assemblies in Vietnam, the scope of regulation is specified as follows:
Scope of application
This National Standard describes test methods to determine the fire resistance of doors such as fire doors and shutter assemblies, windows,... designed for installation in doorways located in vertical separators that have fire resistance requirements. Specific types of rear doors (see illustration in Appendix D):
- Hinged doors and vertical swing doors;
- Horizontal sliding doors, vertical sliding doors, full-array doors;
- Folding iron barrier door with 1 metal shell, not insulated;
- Sliding doors with folding wings;
- The door opens and flips;
- Rolling doors.
This National Standard can be applied to test the fire resistance of some types of doors used for elevators.
Reference documents
TCVN 9311:2012, Fire - resistance test- Elements of building construction - Part 1: General requirements
BS EN 1634-1:2000, Fire resistance tests for door and shutter assemblies - Part 1: Fire door and shutter
EN 1363-2:1999, Fire resistance tests - Part 2 Alternative and additional procedures.
EN ISO 13943, Fire safety - Vocabulary.
What are the requirements for testing the fire resistance of fire doors and shutter assemblies in Vietnam?
In Section 5 of National Standard TCVN 9383: 2012, the requirements for testing the fire resistance of fire doors and shutter assemblies in Vietnam are:
Test requirements
The conditions for increasing heat and pressure as well as gas pressure in the test furnace must comply with the requirements set out in National Standard TCVN 9311:2012, if there are additional requirements, they must also comply with EN 1363-2:1999
Test Safety Requirements
All individuals or organizations managing or implementing tests according to this standard should pay attention, this is a form of fire testing that often has dangerous factors such as the ability to generate smoke and toxic gases. On the other hand, due to the large sample size and weight, the safety of people and equipment during sample fabrication and testing should be given close attention.
Before conducting a test, there must be an assessment of risk factors and hazards to human health to provide safety guidelines for the entire trial. A test safety manual is required. There should also be appropriate training for individuals involved in the trial. Laboratory personnel must comply with the test safety guidelines at all times.
What are the procedures for testing the fire resistance of fire doors and shutter assemblies in Vietnam?
In Section 10 of National Standard TCVN 9383: 2012, the procedures for testing the fire resistance of fire doors and shutter assemblies in Vietnam are clearly stated as follows:
Measurements, tests, and preparations before testing
(1) General principles
Before conducting a combustion test, the following steps must be taken:
+ Mechanical inspection, for example, the testing laboratory conducts the relay test of the links in accordance with the provisions of product standards;
+ Measure gaps,
+ Measure the retention resistance of the collapsible mechanism in case this holding resistance is part of the sample fire resistance, see 10.1.3;
+ Check closing status,
(2) Clearance measurement
Before testing, the clearance between the moving part and the fixing part of the door assemblies and barriers (for example, between the door plate and the frame) must be measured. At a minimum, measurements must be taken at 3 locations along each side, top, and bottom edge of each door. The measuring points must be no more than 750 mm apart and must give a non-errant value that differs by more than 0.5 mm. Inaccessible openings must be measured indirectly.
Figures 9 through 12 show examples of measurements taken in various locations for some form of door fin (the contact between the door and the door molding). If the gaps measured by the laboratory are not covered by the provisions of 7.3 prior to testing, the direct scope of application of the test results may be limited. See in 13.
(3) Retention resistance measurement
Retention resistance must be measured for open-door assemblies that do not require a support mechanism (normal opening) but have a closing device. This measurement allows you to know the magnitude of the forces used to keep the door closed and confirm that they work in the same way as the actual working state.
The retention resistance must be determined according to the following provisions: for doors opening on 2 sides, the opening torque for each direction of opening must be determined; For rolling doors, the traction must be determined according to the direction of opening the door.
The retaining resistance in all door assemblies with closing devices installed must be determined by the person himself when exiting without a specific support mechanism as follows: Twist the handle, unlock the latch, ... Open the door sample being tested slowly, attach it to the handle with a force gauge and pull it out about 100 mm from the full closing position. Record the maximum value of the force gauge in the operating range of the door between the fully closed position and the 100 mm opening position.
(4) Inspection of the closing status
Fire doors and shutter assemblies must be checked for final closure before combustion tests can be conducted. This inspection involves opening the door about 300 mm and then pushing it back into the closed position. When performing this procedure, the closing aids must be completely installed into the door model. If the door assembly does not have a closing support device or cannot be used within the range of the incinerator, the door assembly must be closed manually.
Door latches can be installed before the test, but they must not be locked unless the lock can only be used to keep the door in the closed position throughout the test (i.e., there is no lock or other closing device to hold the door in the closed position). This condition is only applicable to doors that are regularly maintained in a closed state. Do not leave keys in the locks.
If the closure condition test is performed on a test specimen placed in the test site in the incinerator, the incinerator must be left in atmospheric pressure mode (i.e. there is no air blowing into the furnace or air intake from within the furnace).
Combustion tests
(1) General principles
Equipment and procedures for combustion testing must comply with the provisions of National Standard TCVN 9311:2012 and, if required, comply with EN 1363-2:1999.
(2) Integrity
When monitoring the integrity of the sample, do not use a 6 mm clearance meter at locations where there are doorsill bars of fire doors and shutter assemblies.
(3) Thermal insulation
When monitoring thermal insulation properties, do not place mobile thermometers in locations where a fixed thermometer is not allowed.
(4) Thermal radiation calculation
Follow the instructions in EN 1363-2:1999 on thermal radiation measurement procedures.
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