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EN 50381 : 2004 COR 2005

Current
Current

The latest, up-to-date edition.

TRANSPORTABLE VENTILATED ROOMS WITH OR WITHOUT AN INTERNAL SOURCE OF RELEASE
Published date

12-12-2005

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
Annex ZZ (informative) Coverage of Essential Requirements of
         EC Directives
Bibliography

Presents 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.

Committee
TC 31
DevelopmentNote
To be read in conjunction with EN 50014. (08/2006)
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Current

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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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