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Assessment of Base Station Conformity to Lightning Protection Norms

This presentation discusses the assessment of base station conformity to normative requirements related to protection against lightning and the measures of protection that should be implemented. The presentation also covers the inspection process for the lightning protection system and the normative requirements that should be followed. The context, prerequisites, and operating mode are also discussed.

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Assessment of Base Station Conformity to Lightning Protection Norms

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  1. ASSESSMENT OF THE CONFORMITY OF THE BASE STATIONS TO THE NORMATIVE REQUIREMENTS RELATED TO THE PROTECTION AGAINST LIGHTNING ITU Regional Standardization Forum for Africa (Dakar, Senegal, March 24-25 2015) DALLY Brice Landry, Co-Editeur of Rec K. arcb ITU-T/SG5 Tanya MCPHERSON'S Consulting Ivory Coast Brice.dally@Tanya Mcpherson'S-consulting.c i DAKAR, Senegal, 24 - March 25, 2015

  2. PLAN OF THE PRESENTATION • CONTEXT 3 • PREREQUISITES 4 • MEASURES OF PROTECTION 5 • INTERNAL SPF 6 • EXTERNAL SPF 7 • INSPECTION OF A SPF 8 • NORMATIVE REQUIREMENTS 9 • OPERATING MODE 12 • CONCLUSION 18 2 DAKAR, Senegal, 24 - March 25, 2015

  3. CONTEXT For the exercise of its tasks, rights and obligations of controls of ICT infrastructure, the State of the Côte D’Ivoire has instructed its operational structures (the Ex-ATCI and the AIGF today) since 2011 to the effect of achieving the "campaigns of control of conformity of the base-electrical stations implanted on the Ivorian territory". These campaigns are occuring in a period of intensive deployment (densification, extension, migration) of networks in urban and rural areas by telecommunications operators. VLSCH Consulting, as consultant in the realization of this mission, presents the experience gained on more than 1800 radio-electrical sites by focusing on "The control of lightning protection systems ". 3 DAKAR, Senegal, 24 - March 25, 2015

  4. Prerequisite • LIGHTNING PROTECTION : A basic requirement Lightning is an electrical discharge of atmospheric origin. "There are no devices or methods which could change the natural phenomena to the point of preventing lightning strikes. The impacts of lightning on the facilities or in their vicinity(or on the services entering the facilities) are dangerous to the people, the facilities themselves, their content, their installations and departments That is why the lightning protection measures are essential". cf the IEC 62305 - 1. 4 DAKAR, Senegal, 24 - March 25, 2015

  5. MEASURES OF PROTECTION AGAINST LIGHTNING "The measurement of essential protection and the most reliable one for the protection of facilities against physical damage is deemed to be the lightning protection system (SPF). It usually includes a system of external protection and a system of internal protection against lightning strikes. " Cf. IEC 62305-3. 5 DAKAR, Senegal, 24 - March 25, 2015

  6. SYSTEM OF EXTERNAL PROTECTION • A system of external protection against lightning is intended to: A) intercept a lightning strike on the facility by a capture device ; B) flow in a safe manner the lightning current to earth by one or some downward conductors ; C) disperse the lightning current in the earth by a network of earthing. 6 DAKAR, Senegal, 24 - March 25, 2015

  7. INTERNAL PROTECTION SYSTEM • A system of internal protection against lightning helps to prevent the dangerous sparks in the facility by using a network of bonding connections or a separation distance between the components of the system of external protection and the other internal conductors of the facility. 7 DAKAR, Senegal, 24 - March 25, 2015

  8. INSPECTION OF A SPF • The inspections of the SPF include the verification of the technical documentation, visual checks and test measurements. They are intended to ensure that: • The lightning protection system is consistent with the design based on the normative requirements in force; • All the components of the lightning protection system are in good condition and able to ensure the functions for which they were designed, and that there is no corrosion; • All departments or all constructions recently added are integrated in the external SPF . 8 DAKAR, Senegal, 24 - March 25, 2015

  9. NORMATIVE REQUIREMENTS Among normative requirements in force, we can cite the recommendations of the standardization sector of the International Telecommunication Union and the international standards: • Recommendation ITU-T K56: 2010: K SERIES: Protection against disturbances: Protection of radio-electrical base stations against lightning ; • Recommendation ITU-T K27; K72 and K39 . • ISO IEC 62305-1 / -2 / -3 / -4: 2010 NB:there is no ITU-T recommendation specific to the evaluation of the conformity of the SPF, such is the purpose of the draft recommendation K. arcb 9 DAKAR, Senegal, 24 - March 25, 2015

  10. DESIGN/ CONSTRUCTION / DEPLOYMENT INITIAL CHECK Periodic checking • Visual Inspection; • Full Inspection according to the package leaflet for verification Identification of feared events Establishment of a PTAC adapted to the risk of the lightning Installation of external and internal SPF and establishment of PV from recipe Verification of compliance of achievements to the Specifications COMPREHENSIVE APPROACH TO DESIGN, DEPLOY, AND MAINTENANCE OF A SPF 10 DAKAR, Senegal, 24 - March 25, 2015

  11. MAXIMUM PERIODICITY • The maximum periodicity of inspection of a SPF is: • * Included: all facilities containing sensitive internal networks, venues of large assemblies . 11 DAKAR, Senegal, 24 - March 25, 2015

  12. OPERATING MODE 12 DAKAR, Senegal, 24 - March 25, 2015

  13. Sheet of periodic inspection of the system of external protection 13 DAKAR, Senegal, 24 - March 25, 2015

  14. 14 DAKAR, Senegal, 24 - March 25, 2015

  15. Sheet of inspection of the system of earthing 15 DAKAR, Senegal, 24 - March 25, 2015

  16. Sheet of inspection of the system of earthing 16 DAKAR, Senegal, 24 - March 25, 2015

  17. Sheet of inspection of the system of the earthing 17 DAKAR, Senegal, 24 - March 25, 2015

  18. CONCLUSION At the end of this presentation, we could recall that the impacts of lightning on the radio-electrical base stations in particular or in their vicinity are dangerous for people and the services provided. These impacts caused many interruptions of services, hence financial losses and more and more litigation between site managers, operators and residentsin the neighborhoods of those sites. The verification of compliance with the standards in the design and installation of the SPF of radio-electrical sites, coupled with regular monitoring of compliance is by far the effective means of the implementation of the precautionary principle. We therefore recommend to the regulators and operators, as far as they are concerned to observe these good practices that allow stating liabilities in case of damage and mitigating the unavailability of services offered. 18 DAKAR, Senegal, 24 - March 25, 2015

  19. THANK YOU FOR YOUR ATTENTION 19 DAKAR, Senegal, 24 - March 25, 2015

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