oSIST prEN 50622:2014
(Main)Lightning protection systems pure performance standard
Lightning protection systems pure performance standard
9-month extension requested by TC secretary * D139/044: NWI approved by BT * ENQ+FV track
Betriebverhaltensnorm von Blitzschutzsystemen
Norme de performance pure des systèmes de protection contre la foudre
Standardne lastnosti sistemov zaščite pred delovanjem strele
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Jan-2014
- Technical Committee
- STZ - Lightning protection
- Current Stage
- 98 - Abandoned project (Adopted Project)
- Start Date
- 06-Oct-2017
- Due Date
- 11-Oct-2017
- Completion Date
- 06-Oct-2017
Overview
prEN 50622:2013 (CLC) is a draft pure performance standard for lightning protection systems (LPS) that defines a method to measure and document the interception (attachment) performance of LPS installed in real-world conditions. The standard focuses only on interception performance (not materials or installation techniques) and requires statistical monitoring across a representative set of installations to establish performance objectively.
Key topics and technical requirements
- Objective: Provide a reproducible method to evaluate interception performance of LPS installed according to public reference standards or specifications.
- Performance metric: The performance factor α is the ratio of observed failures to the total number of expected dangerous events; the LPS is acceptable when α < 1.
- Expected dangerous events (per structure):
- N = Ng × A × C × 10^-6
- Ng = lightning ground flash density (flashes/km²/year)
- A = collection area (m²) of the structure (graphical or mathematical). For isolated rectangular structures:
A = L × W + 6 × H × (L + W) + 9 × π × H² (L, W, H in metres) - C = location factor (typical values: 0.25, 0.5, 1, 2 depending on surroundings)
- N = Ng × A × C × 10^-6
- Monitoring requirements: Accumulate a minimum total of N ≥ 500 expected dangerous events across monitored sites before evaluating α. Each LPS must be monitored at least 6 months, and at least 10% of installations used for α must have ≥5 years’ monitoring.
- Monitoring Degrees (MD):
- MD1 (high): Instruments detect strikes and characteristics - unambiguous performance measurement. ≥10% of monitored installations.
- MD2 (medium): Event counters (date, peak current optional). Can count strikes; damage attribution limited. Combined MD1+MD2 ≥ 60% of monitored sites.
- MD3 (basic): Periodic visual inspections and incident records only.
- Failure accounting: Observed failures are adjusted by the declared efficiency (E) of each LPS type: total failures = a + Σ(b·E) + Σ(c·E), where a = MD1 failures, b = MD2 failures, c = MD3 failures.
- Book of Installation: Certified record including inspection data, coordinates, collection-area inputs, drawings, materials, counters/instrument descriptions and damage reports.
Applications and users
- Organizations implementing large-scale LPS monitoring programs (utilities, telecom, airports, industrial facilities).
- LPS manufacturers and system type assessors seeking objective field-proven performance validation.
- Certification bodies and independent testing institutions performing performance verification and long-term data collection.
- Researchers and national committees establishing evidence-based LPS requirements.
Related standards
- prEN 50622 is explicitly a performance standard and is intended to be used in conjunction with public reference standards or specifications that define materials, installation practices and component tests. Users should pair prEN 50622 monitoring procedures with their applicable design/installation standards for a complete compliance framework.
Keywords: lightning protection systems, pure performance standard, LPS monitoring, interception performance, lightning ground flash density, collection area, performance factor, monitoring degrees.
Frequently Asked Questions
oSIST prEN 50622:2014 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Lightning protection systems pure performance standard". This standard covers: 9-month extension requested by TC secretary * D139/044: NWI approved by BT * ENQ+FV track
9-month extension requested by TC secretary * D139/044: NWI approved by BT * ENQ+FV track
oSIST prEN 50622:2014 is classified under the following ICS (International Classification for Standards) categories: 91.120.40 - Lightning protection. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN 50622:2014 is associated with the following European legislation: Standardization Mandates: M/490. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase oSIST prEN 50622:2014 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 50622:2013
01-januar-2014
6WDQGDUGQHODVWQRVWLVLVWHPRY]DãþLWHSUHGGHORYDQMHPVWUHOH
Lightning protection systems pure performance standard
Norme de performance pure des systèmes de protection contre la foudre
Ta slovenski standard je istoveten z: prEN 50622:2013
ICS:
91.120.40 =DãþLWDSUHGVWUHOR Lightning protection
oSIST prEN 50622:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 50622:2013
oSIST prEN 50622:2013
DRAFT
EUROPEAN STANDARD
prEN 50622
NORME EUROPÉENNE
September 2013
EUROPÄISCHE NORM
ICS
English version
Lightning protection systems pure performance standard
Norme de performance pure des To be completed
systèmes de protection contre la foudre
This draft European Standard is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2014-02-14.
It has been drawn up by CLC/TC 81X.
If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national
standard without any alteration.
This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own
language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to
change without notice and shall not be referred to as a European Standard.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Project: 23705 Ref. No. prEN 50622:2013 E
oSIST prEN 50622:2013
1 Contents
2 Foreword . 3
3 Introduction . 4
4 1 General . 4
5 1.1 Object . 4
6 1.2 Scope . 4
7 2 Normative references . 4
8 3 Terms and definitions . 4
9 4 Installations under monitoring . 6
10 4.1 Lightning ground flash density N . 6
g
11 4.2 Collection area A . 6
d
12 4.3 Location factor C . 6
d
13 4.4 Number of dangerous events N for a structure . 6
D
14 4.5 Total number of expected dangerous events N . 7
DT
15 5 Monitoring Degrees . 7
16 6 Book of installation . 7
17 7 Failures . 8
18 8 Performance . 9
oSIST prEN 50622:2013
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21 Foreword
22 This document (prEN 50622:2013) has been prepared by CLC/TC 81X "Lightning protection".
23 This document is currently submitted to the Enquiry.
oSIST prEN 50622:2013
24 Introduction
25 In April 2010, the Technical Bureau (BT) of CENELEC asked the European Lightning Protection group
26 (CLC/TC 81X) “to examine the possibility to establish a pure performance standard, independent from any
27 technology and enabling the development of existing and future technologies on lightning protection systems
28 and report back to BT” (D136/014).
29 In October 2011, BT approved by majority the New Work Item i.e. the future prEN 50622 “Lightning
30 protection systems pure performance standard” (D139/044).
31 The aim of this standard is to describe a method to know and document the performance of an LPS. Taking
32 into account that lightning phenomena cannot be fully reproduced in a laboratory and that testing in “field
33 sites” is not representative from a statistical point of view, the performance of a LPS can only be established
34 in real installations with a significant number of sites, representing the different climatic and geographical
35 conditions around the world.
36 This commitment from the BT is a unique opportunity to go a step forward in the scientific and technologic
37 developments in the field of lightning protection.
38 Only interception performance is considered in this document.
40 1 General
41 1.1 Object
43 The object of this standard is giving a method to measure the interception performance of lightning
44 protection systems when they are installed in real conditions.
45 1.2 Scope
47 This standard provides the requirements to evaluate the performance, in terms of lightning interception
48 attachment, of lightning protection systems (LPS) installed according to their reference standards or
49 specifications.
50 2 Normative references
51 This is a Pure Performance Standard and therefore no indications about material, sizes or installation
52 instructions are given. Nevertheless, the Lightning Protections Systems under monitoring should have been
53 designed and installed according to documents that shall be public and shall contain all the characteristics of
54 the LPS, such as installation instructions, materials, sizes and laboratory tests of the lightning protection
55 components.
56 3 Terms and definitions
57 For the purpose of this document, the following terms and definitions apply.
58 3.1
59 Lightning Protection System
60 LPS
61 system intended to intercept lightning flashes, conduct lightning current and disperse it into the earth thus
62 reducing physical damage caused by direct lightning flashes
63 3.2
64 Type of Lightning Protection Systems under monitoring
65 full set of characteristics of the Lightning Protection Systems which performance is being monitored
66 3.3
67 protected area
68 structure, object or open area that is under the protection of a lightning protection system and that should
69 therefore not be struck by lightning
oSIST prEN 50622:2013
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70 3.4
71 monitoring Degree
72 MD
73 number related to the information given by the set of measures taken for observing the performance of a
74 Lightning Protection System
75 3.5
76 failure
77 missed interception by LPS in a protected area
78 3.6
79 damage
80 puncture, masonry breakage, fire or flash mark that has been caused by a direct lightning strike
81 3.7
82 efficiency of a LPS
83 E
84 accepted percentage of flashovers for an installed LPS, that must be clearly defined in the standards or
85 specifications, indicating the type and characteristics of lightning flashes to which the protected area is
86 exposed
87 3.8
88 performance factor
89 α
90 value of the number of failures within monitored protected areas relative to the total amount of flashes
91 expected in those areas
92 3.9
93 flashover
94 …………………………………………………………….
...
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