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Fire shutter assembly - Part 1: General technical specification
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GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.50
CCS C 82
Replacing GB 14102-2005
Fire shutter assembly - Part 1.General technical
specification
Issued on: APRIL 29, 2024
Implemented on: MAY 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
Introduction... 6
1 Scope... 7
2 Normative references... 7
3 Terms and definitions... 8
4 Classification... 10
4.1 Structural diagram... 10
4.2 Classification and code... 11
4.3 Specifications... 13
4.4 Model... 13
5 Technical requirements... 13
5.1 Appearance... 13
5.2 Main material properties... 14
5.3 Performance of main components... 14
5.4 Assembly quality... 17
5.5 Opening and closing operation performance... 18
5.6 Wind pressure resistance... 20
5.7 Smoke-proof performance... 20
5.8 Fire resistance... 22
6 Test methods... 22
6.1 Appearance... 22
6.2 Main material properties... 22
6.3 Performance of main components... 22
6.4 Assembly quality... 27
6.5 Opening and closing operation performance... 29
6.6 Wind pressure resistance... 33
6.7 Smoke-proof performance... 36
6.8 Fire resistance... 39
7 Inspection rules... 40
Fire shutter assembly - Part 1.General technical
specification
1 Scope
This document defines the terms and definitions, stipulates the classification, technical
requirements, inspection rules, marking, packaging, transportation and storage of fire
shutter assemblies, and describes the corresponding test methods.
This document applies to the design, manufacture and inspection of fire shutter
assembly products used in industrial and civil buildings.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this
document and are indispensable for its application. For dated references, only the
edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
GB/T 191, Packaging - Pictorial marking for handling of goods
GB/T 708, Dimension, shape, weight and tolerance for cold-rolled steel plates and
sheets
GB/T 709, Dimension shape weight and tolerances for hot-rolled steel plates and
sheets
GB/T 3003-2017, Refractory fibres and the products
GB/T 3923.1, Textiles - Tensile properties of fabrics - Part 1.Determination of
maximum force and elongation at maximum force using the strip method
GB/T 5907.5, Fire protection vocabulary - Part 5.Fire products
GB/T 7633, Fire resistance tests - Door and shutter assemblies
GB/T 8162, Seamless steel tubes for structural purposes
GB/T 8358, Steel wire ropes - Determination of breaking force
GB 8624-2012, Classification for burning behavior of building materials and
products
GB/T 9914.3, The method for reinforcement products - Part 3.Determination of
mass per unit area
GB/T 9969, General principles for preparation of instructions for use of industrial
products
GB/T 13793, Straight seam welded steel pipe
GB 14102.2, Fire shutter assembly - Part 2.Motor for fire shutter assembly
GB 14102.3, Fire shutter assembly - Part 3.Control unit for fire shutter assembly
GB 16807, Fire intumescent seals
GB/T 20285-2006, Toxic classification of fire effluents hazard for materials
GB 50877, Code for installation and acceptance of fire resistant shutters, fire
resistant doorsets and fire resistant windows
3 Terms and definitions
For the purposes of this document, the following terms and definitions, as well as those
given in GB/T 3003-2017, GB/T 5907.5, GB/T 7633 and GB 50877, apply.
3.1
fire shutter assembly
A shutter assembly with certain fire resistance, which is composed of roller, guide rail,
seat plate, lintel, box body, shutter curtain, motor for fire shutter assembly (referred to
as motor for shutter assembly), and control unit for fire shutter assembly (referred to as
control unit) and other components.
[Source. GB/T 5907.5-2015, 2.14.4.1, modified]
3.2
fire steel shutter assembly
Fire shutter assembly of which the shutter curtain is mainly made of steel materials.
[Source. GB/T 5907.5-2015, 2.14.4.2, modified]
3.3
fire inorganic shutter assembly
3.10
motor for fire shutter assembly
A powered device used, in conjunction with the control unit for fire shutter assembly,
to drive the shutter curtain of fire shutter assembly to complete opening, positioning,
and closing functions.
Note. The motor for fire shutter assembly is generally composed of an electric
motor, a thermal release mechanism with temperature sensing element, a
limitation assembly, a gearbox assembly, a brake and manual operation
assembly, and an electrical assembly.
[Source. GB/T 5907.5-2015, 2.14.4.5, modified]
3.11
thermal release mechanism with temperature sensing element
A mechanical device that is connected to the clutch release lever in the brake and
manual operation assembly of the motor for fire shutter assembly and can be linked to
release the brake of the motor through the action of its own temperature sensing element.
Note. The thermal release mechanism with temperature sensing element is a key
component of the motor for fire shutter assembly. In the event of an
emergency when a fire occurs in a building and the power is cut off, when the
ambient temperature reaches the specified nominal operating temperature
(70 °C), the temperature sensing element will be heated and actuated, and the
clutch release rod will be linked to separate the brake component of the motor
for fire shutter assembly from the transmission mechanism, releasing the
brake. The shutter curtain of fire shutter assembly will drop under its own
weight and close the opening of the fireproof (partition) wall to prevent the
spread of fire. For the performance requirements of the thermal release
mechanism with temperature sensing element, see GB 14102.2.
4 Classification
4.1 Structural diagram
The structural diagram of the fire shutter assembly is shown in Figure 1.
4.3 Specifications
The specifications of fire shutter assemblies are expressed in four digits consisting of
the thousands and hundreds digits (tens digits rounded off) of the design-given
installation opening width and height structural dimensions [in millimeters (mm)]
arranged in sequence. For example, if the installation opening structure width of the fire
shutter assembly is 4 580 mm and the height is 5 030 mm, its specification is expressed
as 4650.
4.4 Model
The method for compiling the models of fire shutter assemblies is shown in Figure 2.
Example 1.Model "GFJ·3530-C2b-Ⅰ-abc" indicates a fire steel shutter assembly, of
installation opening width 3 450 mm ~ 3 540 mm; height 2 950 mm ~ 3 040 mm; un-
insulated fire shutter assembly; fire resistance integrity not less than 2.00 h; exposed to
fire on the side facing away from the motor and the box body; single-curtain;
manufacturer-customized as abc.
Example 2.Model "WFJ·3560-A3-Ⅱ/360-ab" indicates a fire inorganic shutter
assembly, of installation opening width 3 450 mm ~ 3 540 mm; height 5 950 mm ~ 6
040 mm; insulated fire shutter assembly; fire resistance insulation not less than 3.00 h;
fire resistance integrity not less than 3.00 h; exposed to fire on both sides; double-
curtain; center distance between the guide rails on the same side of the double-shutter
curtain 360 mm; manufacturer-customized as ab.
5 Technical requirements
5.1 Appearance
5.1.1 The surface of the metal parts of the fire shutter assembly shall be smooth and
free of rust. There shall be no cracks, pits, burrs, distortions, welding defects, obvious
bumps, hammer marks, scratches and other defects. The surface coating and plating of
the fire shutter assembly material shall be uniform and there shall be no missing coating,
peeling, rust and other phenomena. The shutter curtain of the fire inorganic shutter
assembly shall be flat and there shall be no cracks, missing corners, patching and other
defects.
5.1.2 Fire shutter assembly products shall be equipped with permanent markings and
nameplates and shall comply with the requirements of 8.1.
5.2 Main material properties
5.2.1 The nominal thickness of steel plates used in the main components of fire shutter
assemblies shall comply with the provisions of Table 4.The allowable deviation of the
thickness of steel plates and steel strips shall comply with the relevant provisions of
GB/T 708 or GB/T 709.The allowable deviation of the wall thickness of steel pipes
shall comply with the relevant provisions of GB/T 8162 or GB/T 13793.
5.2.2 The tensile breaking strength (50 mm) of the inorganic shutter curtain shall not be
less than 1 000 N.
5.3 Performance of main components
5.3.1 Shutter slat
5.3.1.1 The shutter slat shall be straight and both ends shall be securely fitted with
baffles (side buckles) or other mechanisms to prevent adjacent shutter slats from
moving.
5.3.1.2 The shutter slat shall be able to be connected in series (connected) reliably. After
being connected in series (connected), adjacent shutter slats shall rotate flexibly and
shall not fall off after swinging 90°, as shown in Figure 3.
5.3.1.3 The deviation of the mass (weight) per unit length of the shutter slat shall not
exceed ±6% of the manufacturer's published (designed) value.
5.3.5.2 Transmission chains
The tensile strength of the transmission chain shall not be less than 6 times the rated
load.
5.3.5.3 Shutter curtain bearing components
The fixed ends of the shutter curtain bearing components (such as steel wire ropes) shall
be securely fastened, and their tensile strength shall not be less than 6 times the actual
load.
5.3.6 Curtain guide device
5.3.6.1 A shutter curtain guide device shall be provided between the tops of the guide
rails of the fire shutter assembly along the width of the shutter curtain so that the shutter
curtain does not scrape against the ends of the guide rails when entering the guide rails.
The rolling parts on the guide device that come into contact with the shutter curtain
shall be securely fixed and operate smoothly.
5.3.6.2 When the rolling component of the guide device that contacts the shutter curtain
is a cam, the cam spacing shall not be greater than 2 000 mm.
5.3.7 Motor
The performance of the motor for fire shutter assembly shall comply with the provisions
of GB 14102.2.
5.3.8 Control unit
The performance of the control unit for fire shutter assembly shall comply with the
provisions of GB 14102.3.
5.4 Assembly quality
5.4.1 The connection and installation of all parts and fasteners of the fire shutter
assembly shall be firm and reliable.
5.4.2 Appropriate amount of lubricant shall be added to the contact surfaces between
the transmission parts of the fire shutter assembly as required.
5.4.3 Buried guide rails shall be installed and embedded in the building wall or column
structure; exposed guide rails shall be protected from fire by non-combustible materials.
5.4.4 The installation method and position of the temperature-sensing element of the
thermal release mechanism with temperature sensing element in the motor shall meet
the requirements of rapid startup in the event of a fire, and its horizontal installation
position shall be located in the middle of the width direction of the fire shutter assembly;
fire shutter assemblies exposed to fire on both sides shall be equipped with two sets of
5.7.2 Smoke leakage from shutter curtain
When the pressure difference on both sides of the shutter curtain of the fire shutter
assembly is 20 Pa, the smoke leakage under the standard state (20 ℃, 101 325 Pa) shall
not be greater than 12 m3/(m2·h).
5.8 Fire resistance
The fire resistance performance of fire shutter assemblies shall comply with the
requirements of Table 2.
6 Test methods
6.1 Appearance
Under normal natural light conditions, carry out the inspection by combining visual
observation and hand touch.
6.2 Main material properties
6.2.1 Use a micrometer or vernier caliper to measure the thickness of the steel material
specified in Table 4.Measure three random locations on the steel material of each
component; take the average value; calculate the material thickness deviation by
comparing it with the designed value on the drawing.
6.2.2 The breaking strength (50 mm) of inorganic shutter curtain materials shall be
measured in accordance with the provisions of GB/T 3923.1.
6.3 Performance of main components
6.3.1 Shutter slat
6.3.1.1 Under normal natural light conditions, use a combination of hand inspection and
visual inspection to check the straightness of the shutter slat and the installation of the
end baffles (side buckles) or anti-movement mechanisms.
6.3.1.2 Take any two shutter slats connected in series; fix one of them; rotate the other
shutter slat to 90° (see Figure 3); observe and record the rotation of the shutter slats.
6.3.1.3 The mass deviation per unit length of the shutter slat shall be determined
according to the following steps.
a) Randomly select three shutter slats from the fire shutter assembly as test pieces;
b) Use an electronic scale to weigh the mass Gi of each shutter slat;
c) Use a steel tape measure to measure the length Li of each shutter slat;
d) Calculate the mass per unit length ρLi of each shutter slat according to Formula
(1) and round the result to an integer;
Where.
Gi – shutter slat mass, in grams (g);
Li – shutter slat length, in meters (m);
ρLi – mass per unit length of the shutter slat, in grams per meter (g/m);
i – shutter slat test piece number, 1, 2, 3, respectively.
e) Calculate the mass deviation per unit length of the shutter slat ΔρL according
to Formula (2) and round the result to an integer.
Where.
ρL1, ρL2, ρL3 – masses per unit length of the three shutter slats calculated according to
Formula (1), in grams per meter (g/m);
ρL0 – the manufacturer's declared value of the shutter slat's mass per unit length, in
grams per meter (g/m);
ΔρL – mass deviation of shutter slat per unit length, in grams per meter (g/m).
6.3.1.4 The temperature gradation of the core material of the steel composite shutter
slat shall be determined in accordance with the test method specified in GB/T 3003-
2017.Randomly take a steel composite shutter slat; cut it into 3 sections; dismantle it
and visually inspect the filling condition of the sandwich (layer) material inside the
shutter slat.
6.3.2 Inorganic shutter curtain
6.3.2.1 The deviation of the mass per unit area of the inorganic shutter curtain shall be
determined according to the following steps.
a) Cut a sample of 2 000 mm × 400 mm from the inorganic shutter curtain and
prepare 6 test pieces according to the cutting method for felt samples specified
in GB/T 9914.3;
b) According to the method for determining the mass per unit area of felt samples
specified in GB/T 9914.3, test the mass per unit area ρA of the inorganic shutter
curtain;
c) Calculate the mass deviation per unit area ΔρA of the shutter curtain according
to Formula (3).
Where.
ρA – mass per unit area of the shutter curtain measured according to 6.3.2.1b), in grams
per square meter (g/m2);
ρA0 – the manufacturer's declared value of the mass per unit area of the shutter curtain,
in grams per square meter (g/m2);
ΔρA – mass deviation of shutter curtain per unit area, in grams per square meter (g/m2).
6.3.2.2 The combustion performance of inorganic shutter curtains shall be tested in
accordance with the provisions of GB 8624-2012, and the smoke toxicity hazard
classification shall be tested in accordance with the provisions of GB/T 20285-2006.
6.3.2.3 The high and low temperature test of inorganic shutter curtain shall be carried
out according to the following steps.
a) Cut a test sample with a length of not less than 1 500 mm and a width of not
less than 300 mm along the vertical running direction of the shutter curtain;
b) Fold the shutter curtain test sample four times in the forward and reverse
directions along its length; stack them in a low-temperature test chamber.
Adjust the temperature in the test chamber to 20 °C ± 2 °C; maintain it for 30
min ± 5 min; then reduce the temperature to -20 °C ± 2 °C at a rate of no more
than 5 °C/min; after maintaining it at this temperature for 48 h, remove the test
sample from the low-temperature chamber and observe whether it is brittle and
whether it still maintains a certain degree of elasticity.
c) After placing the shutter curtain samples tested in 6.3.2.3b) under normal
laboratory conditions for 24 hours, fold the shutter curtain test samples in the
forward and reverse directions a total of four times along the length direction
and stack them in a high-temperature test chamber. Adjust the temperature in
the test chamber to 20 °C ± 2 °C; maintain it for 30 min ± 5 min; then increase
the temperature to 55 °C ± 2 °C at a rate of no more than 5 °C/min. After
maintaining it at this temperature for 48 hours, remove the test samples from
the high-temperature chamber and observe whether they are sticking.
6.3.3 Guide rail
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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