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GB/T 20284-2006 English PDF (GBT20284-2006)

GB/T 20284-2006 English PDF (GBT20284-2006)

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GB/T 20284-2006: Single burning item test for building materials and products

GB/T 20284-2006
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.40
C 80
Single burning item test for
building materials and products
ISSUED ON. JUNE 2, 2006
IMPLEMENTED ON. NOVEMBER 1, 2006
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Test facility ... 6
5 Test specimen ... 14
6 Conditioning ... 18
7 Principle... 18
8 Test procedure ... 18
9 Expression of results ... 24
10 Test report ... 24
Annex A (Normative) Calculation procedures ... 26
Annex B (Informative) Precision of test method ... 45
Annex C (Normative) Calibration procedures ... 50
Annex D (Informative) Calibration procedures ... 63
Annex E (Normative) Design drawings ... 67
Annex F (Informative) Data file format ... 102
Annex G (Informative) Record sheet ... 106
Annex H (Informative) Standardization installation and fixed conditions of tubular insulation materials ... 108
Foreword
This Standard equivalently adopts EN 13823.2002 Reaction to fire tests for building products - Building products excluding floorings exposed to the thermal attack by a single burning item (English version).
This Standard is equivalent to translate EN 13823.2002.
For ease of use, this Standard makes the following editorial changes.
a) modified the name of the standard, so as to suit Chinese customs;
b) used Chinese national standards to replace the referenced international standards (see Clause 2 “Normative references”);
c) used decimal point “.” to replace comma “,” which was used as decimal point;
d) deleted EN standard’s foreword and introduction;
e) added informative Annex H for instructions on use.
Annex A, annex C, annex E of this Standard are normative; annex B, annex D, annex F, annex G, annex H are informative.
This Standard was proposed by China Ministry of Public Security.
This Standard shall be under the jurisdiction of the 7th Technical Committee of National Technical Committee on Fire Protection of Standardization
Administration of China (SAC/TC 113/SC 7).
The drafting organization of this Standard. Sichuan Fire Research Institute of Ministry of Public Security.
Main drafters of this Standard. Zhang Xu, Wang Liping, Lu Guojian, Deng Xiaobing, Zhao Li.
Single burning item test for
building materials and products
1 Scope
This Standard specifies a method of test for determining the reaction to fire performance of construction products excluding floorings, and excluding products which are indicated in the EC Decision 2000/147/EC, when exposed to thermal attack by a single burning item (SBI). The calculation procedures are given in annex A. Information on the precision of the test method is given in annex B. The calibration procedures are given in annexes C and D, of which C is a normative annex.
NOTE This Standard has been developed to determine the reaction to fire performance of essentially flat products. The treatment of some families of products, e.g. linear products (pipes, ducts, cables etc.) need special rules.
2 Normative references
The following standards contain the provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated references, subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 16839.1 Thermocouples - Part 1. Reference tables (GB/T 16839.1-
1997, idt IEC 584-1.1995)
GB/T 6379.1-2004 Accuracy(trueness and precision) of measurement
methods and results - Part 1. General principles and definitions (ISO 5725- 1.1994, IDT)
GB/T 6379.2-2004 Accuracy (trueness and precision) of measurement
methods and results - Part 2. Basic method for the determination of
repeatability and reproducibility of a standard measurement method (ISO 5725-2.1994, IDT)
ISO 13943 Fire safety - Vocabulary
3.6
TSP600s
total smoke production from the specimen in the first 600 s of exposure to the main burner flames
3.7
FIGRA0.2 MJ
maximum of the quotient of heat release rate from the specimen and the time of its occurrence using a THR-threshold of 0.2 MJ.
NOTE The FIGRA0.2 MJ is described in more detail in A.5.3.
3.8
FIGRA0.4 MJ
maximum of the quotient of heat release rate from the specimen and the time of its occurrence using a THR threshold of 0.4 MJ.
NOTE The FIGRA0.4 MJ is described in more detail in A.5.3
3.9
SMOGRA
smoke growth rate. The maximum of the quotient of smoke production rate from the specimen and the time of its occurrence
NOTE The SMOGRA is described in more detail in A.6.3.
3.10
sustained flaming
persistence of flame on or over a surface for a minimum period of time
4 Test facility
4.1 General
The SBI test facility shall consist of a test room, the test apparatus (trolley, frame, burners, hood, collector and ducting), the smoke exhaust system and general measuring equipment. These components are specified in 4.2 to 4.7. Design drawings are given in annex E. Dimensions given in the drawings are nominal unless tolerances are given in the text.
NOTE The air supply to the test room entering below the trolley should be fresh, uncontaminated air.
4.2 Test room
4.2.1 The test room shall have an inner height of (2.4±0.1) m and an inner floor area of (3.0±0.2) m in both directions. The walls shall be made of stone type building blocks (e.g. cellular concrete), gypsum boards, calcium silicate boards or other boards classified as Euro class A1 or A2.
4.2.2 One wall of the test room shall have an opening to insert the trolley from the surrounding laboratory into the test room. The opening shall be at least 1470 mm wide and 2450 mm high (dimensions of the frame). Windows shall be
placed in the two walls facing the front side of the two perpendicular specimen planes. To be able to handle the SBI apparatus and the specimen when the trolley is in place, an additional door is needed.
4.2.3 With the trolley in place in the test room, the distance between the long wing specimen surface touching the U-profile and the wall of the test room shall be (2.1±0.1) m. This distance shall be measured perpendicularly to the wall facing the long wing. The areas of the openings in the test room, excluding the air inlet at the bottom of the trolley and the smoke exhaust opening in the hood, shall not exceed a total of 0.05 m2.
4.2.4 Both left-orientated arrangements, as shown in Figure 1, and right- orientated arrangements (the trolley shown in Figure 1 mirrored around a vertical line) are allowed.
NOTE 1 To be able to remove side plates of the hood without removing the collector, attention should be paid to the connection between the frame of the SBI apparatus and the ceiling of the room. It should be possible to move the side plate outwards at the bottom. NOTE 2 The relative position of the frame in the test room depends on the details of the connection between room and frame.
a) Shape. right angled triangle (top view) with two equal sides of 250 mm, height 80 mm, bottom closed except for a 12.5 mm pipe socket at the
gravitational center, top open. A right-angled triangular perforated plate shall be positioned in the burner at a height of 10 mm above the bottom. Metal gauze with a maximum mesh size of 2 mm shall be positioned at
heights of 12 mm and 60 mm above the bottom. All dimensions shall be
within ±2 mm.
b) Material. box made of 1.5 mm stainless steel, filled from bottom to top with, successively, a 10 mm void, a layer of pebbles within a size
distribution of 4 mm to 8 mm up to a height of 60 mm, and a top layer of sand within a size distribution of 2 mm to 4 mm up to a height of 80 mm. The metal gauze is used to stabilize the two layers and prevent the
pebbles from entering the gas pipe socket. The pebbles and sand used
shall be rounded (river) stones, not broken ones.
c) Position of main burner. mounted in the tray (see Figure E.18) and
connected to the U profile at the bottom of the specimen position. The
top edge of the main burner shall be at the l...

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