1.
LIGHTNING AND SURGE RISK
ASSESSMENT STUDY
Vijayakumar.N
[Reg. No. DW22076]
Department of P.G Diploma in fire and industrial safety, TVR Nagar,
Aruppukottai Road, Tamil Nadu 625022
Presented to Fire & Industrial Safety
Headed by Mr.I.Vivek RamKumar
Professor & HOD,
Department of Fire safety, Industrial safety
Subbalakshmi Lakshmipathy College of Science
Madurai,Tamil Nadu 625022
External Support : Mr.Naresh
22.01.2023 SLCS-2022 Slide No. 1

2.
ABSTRACT
.
• The fundamental principle in the protection of life and property against
lightning is to provide a means by which a lightning discharge can enter or leave
the earth without resulting damage or loss. A low resistance path should be
offered to the discharge current.
• The function of an external lightning protection system is to intercept, conduct
and disperse a lightning strike safely to earth. Without such a system a
building’s structure, electronics systems and the people working around or
within it are all at risk.
• A structural lightning protection system is designed to protect the structure and
the lives of the people inside by channeling the lightning strike in a safe and
controlled manner to the earth termination network.
• Complete review of existing non conventional lightening protection system of
ABC company and based on risk probability changes to be implemented.
22.01.2023 SLCS-2022 Slide No. 2

3.
SCOPE AND OBJECTIVE
• The scope of the project is primarily to do risk assessment on lightening & Surge
protection of ABC Company.
• Based on the study report improve the existing condition to prevent accident and
asset loss due to lightening.
Objective
 Review of existing Lightning and surge protection system in Building/Structures as
per IS/IEC 62305 series of standards
 Suggest suitable lightning & surge protection system, wherever applicable.
Reference Standard:
IS/IEC 62305 : Part 1 Protection Against Lightning Part 1 General Principles
IS/IEC 62305 : Part 2 Protection Against Lightning Part 2 Risk Management
IS/IEC 62305 : Part 3 Protection Against Lightning Part 3 Physical Damage to Structures and Life Hazard
IS/IEC 62305 : Part 4 Protection Against Lightning Part 4 Electrical and Electronic Systems Within Structures
22.01.2023 SLCS-2022 Slide No. 3

4.
HAZARD IDENTIFICATION AND RISK ASSESSMENT - WITH
JOURNAL REFERENCE
•Jun Guo, Tian-Yi Yang, Si-Yu Guo, Xu-Dong Zhang, Bang-Yong Wang, Yan-Zhao
Xie, Jian Wu, Yan Jing, "Validation of the Lightning Fractal Model Based on the
Attachment Probability Experiments Using Rod-Rod Air Gaps", IEEE Transactions
on Power Delivery, vol.37, no.6, pp.5133-5144, 2022. Link
22.01.2023 SLCS-2022 Slide No. 4
P. Sarajcev, "Bayesian optimization of external lightning protection system of HV
substations", 2020 5th International Conference on Smart and Sustainable
Technologies (SpliTech), pp.1-6, 2020.
Link

5.
JOURNAL REFERENCE
William Brooks, David H. Barnett, W. A. Harrison, David Hattz, John Mankowski,
James Dickens, Andreas Neuber, "Investigation of Lightning Attachment Risks to Small
Structures Associated With the Electrogeometric Model (EGM)", IEEE Transactions on
Plasma Science, vol.48, no.6, pp.2163-2174, 2020. Link
22.01.2023 SLCS-2022 Slide No. 5
Venkatesh Srinivasan, Thirumalini Selvaraj, Shashank Chandrasekaran, Srisailam
Sreedhar, Kunal Kakria, Ramesh Fernando, J.R.S.S. Kumara, "Three-Dimensional
Implementation of Modified Rolling Sphere Method for Lightning Protection of Giant
Medieval Chola Monument in South India", 2019 14th Conference on Industrial and
Information Systems (ICIIS), pp.535-540, 2019. Link

6.
JOURNAL REFERENCE
Shanliang Qiu, Xiaoliang Si, Zhibao Li, Song Zhang, Zemin Duan, "Lightning
strike protection performance research of early streamer emission terminal based
on contrastive discharge test", 2016 IEEE International Power Modulator and High
Voltage Conference (IPMHVC), pp.688-694, 2016. Link
22.01.2023 SLCS-2022 Slide No. 6
Barry Brusso, "The Electrogeometrical Model of the Rolling Sphere Method
[History]", IEEE Industry Applications Magazine, vol.22, no.2, pp.7-70, 2016.
Link

7.
JOURNAL REFERENCE
Sonia Ait-Amar, Gérard Berger, "A Modified Version of the Rolling Sphere
Method", IEEE Transactions on Dielectrics and Electrical Insulation, vol.16, no.3,
pp.718-725, 2009. Link
22.01.2023 SLCS-2022 Slide No. 7
T.A. Potapenko, A.I. Shtifanov, A.N. Potapenko, "Features of estimating of
lightning protection and grounding electrode based on the family of lines of force
in electric field", 2014 International Conference on Lightning Protection (ICLP),
pp.1786-1792, 2014.Link

8.
22.01.2023 SLCS-2022 Slide No. 8
Flow chart of study methodology:

9.
Methods for Air Termination
22.01.2023 SLCS-2022 Slide No. 9
1. The rolling sphere method
2. The Protective angle method
3. The mesh method

10.
Methods for Air Termination
22.01.2023 SLCS-2022 Slide No. 10
Input parameter Comment Symbol Value Reference
Ground flash density
(1/km2/year)
47 thunderstorm days
in
Chennai
NG 4.7 NBC 2016
Structure dimensions (m) - L, W, Hmax 385, 175, 35 -
Location factor of structure No other building in
the vicinity
CD 1 Annex 1-Table 1
LPS Partial Protection is
given.
PB 1 Annex 1-Table 6
Equipotential bonding None PEB 1 Annex 1-Table 11
External spatial shield None KS1 1 Equation (A1.16)

11.
Thanks !!!