BS EN 62305-2:2012 Protection against lightning. Risk management

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BS EN 62305-2:2012

Protection against lightning. Risk management

Status : Current, Work in hand   Published : April 2013

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BS EN 62305-2:2012 Protection against lightning. Risk management

BS EN 62305-2 outlines risk assessment for a structure or service from lightning flashes to earth.
Its purpose is to provide a procedure for the evaluation of such a risk. Once an upper tolerable limit for the risk has been selected, this procedure allows the selection of appropriate protection measures to be adopted to reduce the risk to or below the tolerable limit.

This document supersedes EN 62305-2:2006 + corrigendum November 2006.

BS EN 62305-2:2012 includes the following significant technical changes with respect to EN 62305-2:2006:

1) risk assessment for services connected to structures is excluded from the scope;

2) injuries of living beings caused by electric shock inside the structure are considered;

3) tolerable risk of loss of cultural heritage is lowered from 10-3 to 10-4;

4) extended damage to surroundings structures or to the environment is considered;

5) improved formulas are provided for evaluation of – collection areas relevant to flashes nearby a structure, – collection areas relevant to flashes to and nearby a line, – probabilities that a flash can cause damage, – loss factors even in structures with risk of explosion, – risk relevant to a zone of a structure, – cost of loss.

6) tables are provided to select the relative amount of loss in all cases;

7) impulse withstand voltage level of equipments was extended down to 1 kV.

 Contents of BS EN 62305-2:

  1. Introduction
  2. Scope
  3. Normative references
  4. Terms, definitions, symbols and abbreviations
  5. Explanation of terms
  6. Risk management
  7. Assessment of risk components
  8. Annex A (informative) Assessment of annual number N of dangerous events
  9. Annex B (informative) Assessment of probability PX of damage
  10. Annex C (informative) Assessment of amount of loss LX
  11. Annex D (informative) Evaluation of costs of loss
  12. Bibliography

 




Standard NumberBS EN 62305-2:2012
TitleProtection against lightning. Risk management
StatusCurrent, Work in hand
Publication Date30 April 2013
Cross ReferencesEN 62305-1:2011, IEC 62305-1:2010, EN 62305-3:2011, IEC 62305-3:2010, EN 62305-4:2011, IEC 62305-4:2010, EN 50536, EN 61000-4-5:1995, IEC 61000-4-5:1995, EN 60079-10-1, IEC 60079-10-1, EN 60079-10-2:2009, IEC 60079-10-2:2009, EN 60664-1:2007, IEC 60664-1:2007, IEC 60050-426:2008, Official Journal of European Union, 1994/28/02, CIGRE Electra No 161:1995, CIGRE Electra No 162:1995, ITU-T Recommendation K.46, IEC/TR 62066:2002
ReplacesBS EN 62305-2:2006
International RelationshipsEN 60947-5-4:2003,EN 62305-2:2012,IEC 62305-2:2010
Draft Superseded By01/206429 DC07/30174633 DC
DescriptorsElectrical equipment, Fire safety in buildings, Electrical installations, Lightning protection, Hazards, Building services, Management, Lightning, Climatic zones, Electrical protection equipment, Buildings, Structures, Risk assessment, Damage, Electrical safety, Climatic protection, Telecommunication systems, Mathematical calculations, Hazard prevention in buildings, Surge protection, Lightning conductors, Climatic hazards
ICS29.020
91.120.40
Title in FrenchProtection contre la foudre. Evaluation des risques
Title in GermanBlitzschutz. Risiko-Management
CommitteeGEL/81
ISBN978 0 580 61193 3
PublisherBSI
FormatA4
DeliveryYes
Pages146
File Size3.261 MB
Price£316.00


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