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HVI Lightning Protection System

High – Voltage – Resistant Insulated Conductor (HVI)

"The current UK regulations for high risk and explosive sites are; Dangerous Substances and Explosive Atmospheres Regulations (DSEAR), Control Of Major Accident Hazards Regulations 2015 COMAH & Explosive Regulations 2014. All three of these documents require lightning protection to be installed regardless of the outcome of any risk assessment. Furthermore BSEN 62305 (the current UK standard for lightning protection) states in part 2 section 5.4 that for these explosive and high risk structures, a level II system is required as a minimum.

The type of protection required must ensure that no energy, sparking or source of ignition is present on an explosive storage facility or inside an EX zone 1, 21, 0 or 20 (as determined by BSEN 60079) (An EX zone is an area where ignitable concentrations of flammable gases, vapours or liquids may be present under normal operating conditions) in order to achieve this, it is a legal requirement to provide a level II isolated lightning protection system, either by using free standing masts, overhead catenary system or an insulated high voltage product which complies to BSEN 62561 part 8.

The DEHN HVI system is fully tested, approved and certified for use in these areas providing a non-sparking, non-inductive, self-extinguishing conductor that can cope with up to 200kA of lightning energy and yet safely be installed directly against metallic surfaces within an EX zone 1. If you have any EX zones, have structures storing solid explosives, tanks or silos containing dangerous or flammable powders, liquids or vapours then HVI is the ideal solution for your lightning protection system and comes with the offering of 3D designs to prove the separation distance and area of protection afforded.

If you require any further information please contact us.

Lightning conductors installed, repaired or tested at:

  • Truro Cathedral
  • Lincoln Cathedral
  • Derby Cathedral
  • Exeter Cathedral
  • St. George’s Chapel, Windsor
  • Eton College
  • Wells Cathedral
  • Peterborough Cathedral
  • Blenheim Palace
  • Hereford Cathedral
  • St Asaph’s Cathedral
  • Longleat
  • Worcester Cathedral
  • Bath Abbey
  • St Michael’s Mount
  • Llandaff Cathedral
  • Buckfast Abbey
  • National Trust
  • St David’s Cathedral
  • Bangor Cathedral
  • Plymouth R.C. Cathedral
  • Glastonbury Abbey
  • Downside Abbey
  • Bristol R.C. Cathedral