• 17/30352210 DC : 0

    NA Status of Standard is Unknown

    BS ISO 21925-1 - FIRE RESISTANCE TESTS - FIRE DAMPERS FOR AIR DISTRIBUTION SYSTEMS - PART 1: MECHANICAL DAMPERS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date: 

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Definitions
    4 Principles of the test
    5 Apparatus
    6 Test construction
    7 Determination of leakage of connecting duct and
       measuring station
    8 Determination of leakage at ambient temperature
    9 Fire test
    10 Classification and criteria
    11 Test report
    12 Direct field of application of test results
    Annex A (informative) - Explanatory material about the
            test methods historical information
    Annex B (informative) - Alternative thermal release mechanisms
    Annex C (informative) - Test of thermal release mechanisms
    Annex D (informative) - Reliability tests for thermal release
             mechanisms

    General Product Information - (Show below) - (Hide below)

    Comment Closes On
    Committee FSH/22/-/4
    Document Type Draft
    Publisher British Standards Institution
    Status NA

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements
    ISO 5221:1984 Air distribution and air diffusion Rules to methods of measuring air flow rate in an air handling duct
    ISO 834-1:1999 Fire-resistance tests Elements of building construction Part 1: General requirements
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