• I.S. EN 50381:2004

    Current The latest, up-to-date edition.

    TRANSPORTABLE VENTILATED ROOMS WITH OR WITHOUT AN INTERNAL SOURCE OF RELEASE

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2004

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    1 Scope
    2 Normative references
    3 Definitions
    4 Construction requirements for TVR's and ducting
       4.1 General
       4.2 Degree of ingress protection
       4.3 Design and construction
       4.4 Mechanical strength
       4.5 Penetrations
       4.6 Floor drains
       4.7 Floors
       4.8 Doors
       4.9 Inspection window(s)
       4.10 Apertures
       4.11 Enclosures
    5 Requirements for TVR's, equipment group I, type of
       protection vM2
    6 Ventilation requirements for TVR's, equipment group II
    7 Additional ventilation requirements for TVR'S with an
       internal source of release
    8 Temperature limits
    9 Minimum safety provisions and devices
    10 Additional safety provisions and devices for TVR's
       meeting the requirements of type of protection v2 and
       vM2
    11 Additional requirements for TVR's with an internal
       source of release
       11.1 Assessment of containment systems
       11.2 Release conditions
            11.2.1 No release
            11.2.2 Release of a flammable liquid
       11.3 Design requirements for the containment system
            11.3.1 Infallible parts of the containment system
            11.3.2 Containment system with limited release
       11.4 Ignition capable apparatus in the case of type of
            protection v2
       11.5 Location of apparatus in the case of type of protection
            v3
       11.6 Internal hot surfaces
            11.6.1 Loss of minimum pressure differential, type of
                   protection v2
            11.6.2 Loss of ventilation flow, type of protection v2
            11.6.3 Loss of ventilation flow, type of protection v3
       11.7 Potential source of internal release
    12 Requirements for gas detectors
    13 Supply of protective gas
       13.1 Ventilation
       13.2 Leakage Compensation of a Breathable Atmosphere (LCBA)
       13.3 Density limits
    14 Type verification and tests
       14.1 Sequence of tests
       14.2 Thermal tests
       14.3 Overpressure test
       14.4 Purging test
       14.5 Verification of minimum pressure differential
       14.6 Ventilation flow rate tests for TVR's with an internal
            source of release
       14.7 Overpressure test for containment systems with limited
            release
       14.8 Verification of sequence of operation of the safety
            devices
       14.9 Additional tests
    15 Routine tests
       15.1 Test conditions
       15.2 Verification of minimum pressure differential
       15.3 Ventilation flow rate tests for TVR's with an internal
            source of release
       15.4 Overpressure test for containment systems with limited
            release
       15.5 Verification of sequence of operation of the safety
            devices
       15.6 Additional tests
    16 Marking
       16.1 TVR's all cases
       16.2 TVR's with a containment system
       16.3 Safety related control systems
       16.4 Additional marking
    17 Instructions
    Annex A (normative) Method of protection of electrical
            apparatus containing a potential release of a
            flammable gas or vapour
       A.1 Introduction
       A.2 Definitions
       A.3 Requirements
    Annex B (normative) Method of protection of electrical
            apparatus containing a potential release of a
            flammable liquid
       B.1 Introduction
       B.2 Definitions
       B.3 Requirements
       B.4 Flammable non-flashing liquids
       B.5 Spark and particle barriers
       B.6 Flashing liquids
    Annex C (informative) Determination of peak rise in
            enclosure pressure, resulting from an internal
            release of a flashing liquid
       C.1 Introduction
       C.2 Definitions
    Annex D (informative) Method of protection of electrical
            apparatus containing a potential release of a
            flammable gas or vapour
    Annex E (informative) Mathematical model of dilution of a
            source of release
    Bibliography

    Abstract - (Show below) - (Hide below)

    Provides the specific requirements for the construction and testing of transportable ventilated rooms (TVR's), such as skid mounted analyser houses with type of protection 'v' intended for use in potentially explosive atmospheres.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

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

    EN 50039:1980 Electrical apparatus for potentially explosive atmospheres - Intrinsically safe electrical systems 'i'
    EN 50020:2002 Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'
    EN 60079-15:2010 Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
    EN 61779-4:2000 Electrical apparatus for the detection and measurement of flammable gases - Part 4: Performance requirements for group II apparatus indicating a volume fraction up to 100 % lower explosive limit
    EN 50017:1998 Electrical apparatus for potentially explosive atmospheres - Powder filling "q"
    EN 50019:2000/corrigendum Apr. 2003 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INCREASED SAFETY "E"
    EN 50018 : 2000 AMD 1 2002 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - FLAMEPROOF ENCLOSURE "D"
    IEC TR 60079-16:1990 Electrical apparatus for explosive gas atmospheres. Part 16: Artificial ventilation for the protection of analyser(s) houses
    EN 50021 : 99 COR 2000 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - TYPE OF PROTECTION "N"
    EN 61779-5:2000 Electrical apparatus for the detection and measurement of flammable gases - Part 5: Performance requirements for group II apparatus indicating a volume fraction up to 100 % gas
    EN 60079-10:2003 Electrical apparatus for explosive gas atmospheres - Part 10: Classification of hazardous areas
    EN 61779-1 : 2000 AMD 11 2004 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
    EN 61779-2:2000 Electrical apparatus for the detection and measurement of flammable gases - Part 2: Performance requirements for group I apparatus indicating a volume fraction up to 5 % methane in air
    EN 954-1 : 1996 SAFETY OF MACHINERY - SAFETY-RELATED PARTS OF CONTROL SYSTEMS - PART 1: GENERAL PRINCIPLES FOR DESIGN
    EN 61779-3:2000 Electrical apparatus for the detection and measurement of flammable gases - Part 3: Performance requirements for group I apparatus indicating a volume fraction up to 100 % methane in air
    EN 50015:1998 Electrical apparatus for potentially explosive atmospheres - Oil immersion "o"
    IEC TR 61831:2011 On-line analyser systems - Guide to design and installation
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    EN 50016:2002 Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"
    EN 50028:1987 Electrical apparatus for potentially explosive atmospheres - Encapsulation 'm'
    EN 50014:1997/A2:1999 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS
    IEC 60079-13:2017 Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v"
    EN 61285:2015 Industrial-process control - Safety of analyzer houses
    EN 60034-5:2001/A1:2007 ROTATING ELECTRICAL MACHINES - PART 5: DEGREES OF PROTECTION PROVIDED BY THE INTEGRAL DESIGN OF ROTATING ELECTRICAL MACHINES (IP CODE) - CLASSIFICATION
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