Lightning Protection BS – Download as PDF File .pdf), Text File .txt) or read online. Information from Omega Red on British Standards relating to Lightning Protection . Including BS EN , BS , BS EN to BS EN. BS Code of practice for protection of structures against lightning.
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This ensures equipment is not only protected from damage but also remains operational during lightning activity. Recommendations are made for special cases such as explosives stores and 66651 structures, e.
BS recommends the inspection of any LPS annually. However, BS EN details the use of air rods or finials, catenary or suspended conductors or a meshed conductor network, in any combination.
If R is greater than RT, then protection measures, as determined from the tables given in the standard, are required. Protection of offshore oil and gas installations does not fall within the scope of this British Standard.
BS EN contains a series of National Annexes, from which individual countries, like the UK, have used their own interpretation and perception of risk to compile parameters for certain elements of the risk assessment.
Debut for hybrid system for automotive connectivity. Risk management Part 3: The first stage of the risk assessment is to identify the types of loss that a structure and its contents can incur.
Guidance is also provided on the protection of electronically stored data. These include risk assessment software to automate the complex and repetitive risk calculations, new technical literature, training seminars and face-to-face assistance. For example, consider the mesh sizes for an air termination network and spacing of down conductors in BS EN Lightning and surge protection.
Contact Publications Site Map. Part 1 General principles This is protcetion introduction to the other parts of the standard. You may experience issues viewing this site in Internet Explorer 9, 10 or Please download Chrome or Firefox or view our browser tips.
The existing fabric and layout of a building may make readily apparent zones, or LPZ techniques may have to be applied to create the required zones.
Standard Number BS It is now recognised that the electromagnetic effects of lightning related activity, and switching events, are the cause of much damage to systems and equipment, with the subsequent loss of critical data. The four parts are as follows: September Replaced By: This British Standard provides guidance on the design of systems for the protection of structures against lightning and on the selection of materials.
BS EN is the latest reference document for protection against lightning. The BS British Standard on lightning protection has existed for decades. A lightning protection system commissioned or installed on a structure prior to this date should be maintained to BS Electrical and electronic systems within buildings.
Appropriate SPDs should be fitted wherever services cross from one LPZ to another Conclusion So, this brief overview of the new BS EN lightning protection standard clearly demonstrates how it is more complex and exacting than its predecessor. This standard includes the following cross references: In BS a system was used where each down conductor was attached to an earth electrode. Most read Latest news.
In BSa mesh arrangement was the commonly used layout for the air termination network. Protection levels within a zone must be co-ordinated with the immunity characteristics of the equipment to be protected, ie, the more sensitive the equipment, the more protected the zone required. BS EN will take some time for people to fully interpret and comprehend, but by using the resources available, the issues they may initially encounter certainly can be mastered. The actual risk R is then arrived at through a series of calculations, using formulae in the standard and including various weighting factors.
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BS EN provides the general principles to be followed in the protection of structures against lightning, including their installations and contents as well as people. Search all products by. Surge protection devices SPDs were not required previously to comply with older standards.
BS EN lightning protection systems comprise external structural and internal surge protection etc.
British Standards relating to Lightning Protection
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The faster, easier way to work with standards. SPDs are required under BS EN ; they are part of the internal LPS and are installed firstly to prevent dangerous lightning currents from entering a building via its services, and secondly to reduce the risk of damage to electrical and electronic equipment and critical systems from transient over-voltages. Guidance is provided on how to assess the risk of being struck and how to compile an index figure as an aid to deciding whether a particular structure is in need of protection.
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British Standards – Lightning Protection | Omega Red
Structural lightning protection cannot now be considered in isolation from transient overvoltage or surge protection. Click to learn more. However, the key principles are well established and pretty familiar to all. Resources and Waste Strategy release. If the actual risk R is lower than the tolerable risk RTthen no protection measures are needed. Take the smart route to manage medical device compliance.
The new standard also includes three methods for determining the position of the air termination system: At the moment, it runs concurrently with BSbut ultimately BS will be withdrawn and BS EN will lighgning the only recognised standard by the end of August