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GB/T 41480-2022Smoke leakage tests for door and shutter assemblies (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

April 15, 2022

Implementation date

November 1, 2022

Scope

GB/T 41480-2022 (Smoke leakage tests for door and shutter assemblies) is available as an English-translated PDF.

GB/T 41480-2022 is the Chinese standard "Smoke leakage tests for door and shutter assemblies". Its scope clause reads: This document specifies the measurement of normal temperature (cold) flue gas and medium temperature (hot) flue gas from a door or rolling shutter under the specified test temperature and differential pressure conditions.

Test method for the rate of flue gas leakage from side to side. This document is applicable to smoke leakage rate testing of doors and roller shutters of various structures that impede the spread of fire smoke. Its clauses include terms and definitions.

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Document preview — GB/T 41480-2022

National Standard of the People's Republic of China

Classification: C 82

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Test equipment and equipment
5 Specimen
6 Test Step
7 Presentation of test results
8 Test report
9 Application of test results
Appendix A (informative) This document and ISO 5925-1.2007 structure numbering list
Appendix B (informative) List of technical differences between this document and ISO 5925-1.2007 and their reasons
Appendix C (Informative) Test Principle
Appendix D (normative) test device

1 Scope

This document specifies the measurement of normal temperature (cold) flue gas and medium temperature (hot) flue gas from a door or rolling shutter under the specified test temperature and differential pressure conditions.

Test method for the rate of flue gas leakage from side to side.

This document is applicable to smoke leakage rate testing of doors and roller shutters of various structures that impede the spread of fire smoke.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 5907.5 Fire Fighting Vocabulary Part 5.Fire Fighting Products

GB/T 7633 Fire resistance test method for doors and shutters (GB/T 7633-2008, ISO 3008.2007, MOD)

GB/T 9978.1 Fire resistance test method for building components Part 1.General requirements (GB/T 9978.1-2008, ISO 834-1.

1999, MOD)

3 Terms and Definitions

GB/T 5907.5, GB/T 7633, GB/T 9978.1 and the following terms and definitions apply to this document.

3.1 ambienttemperature

The average air temperature is the ambient temperature of (20±10)°C.

3.2 mediumtemperature

The average air temperature is the ambient temperature of (200 ± 20) °C.

3.3 Smoke leak smokeleakage

Flue gas leakage rate around a closed door or shutter at standard temperature and pressure.

Note. The amount of smoke leakage is represented by the symbol qa, and the unit is cubic meters per hour (m3/h).

3.4 Differentialpressure

During the test, the static pressure difference between the inside and outside of the test device (that is, on both sides of the door or shutter in the closed state).

Note. The pressure is represented by the symbol p, and the unit is Pascal (Pa).

3.5 standard state

Dry air is in the state of temperature 20°C and pressure 101325Pa. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 3008.2007 · ISO 834

Cited by

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