ДСТУ EN 50381:2017 Камери переносні вентильовані з внутрішнім джерелом викиду чи без нього (EN 50381:2004; AC:2005, IDT)

ДСТУ EN 50381:2017
(EN 50381:2004, АС:2005, IDT)

Kамери переносні вентильовані з внутрішнім джерелом викиду чи без нього

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

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

11.3 Design requirements for the containment system

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

11.7 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

Annex B (normative) Method of protection of electrical apparatus containing a potential release of a flammable liquid

Annex C (informative) Determination of peak rise in enclosure pressure, resulting from an internal release of a flashing liquid

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