Lightning Risk Assessment Study
Lightning Risk assessment Study is actually the measure of risk of a lightning strike and probability of damages. It assesses the lightening risks to the facility according to international standards requirements.
These calculations are according to IEC Standard 62305-2.
All these calculations are based on:
- lightning strike density in that particular area (provided by OMV i.e. Ng = 8),
- Danger for people,
- Occupation coefficient of structure,
- Relative location of site,
- Fire Risk,
- Associated services,
- Electrical Lines,
- Lightning Protection Level,
- Surge Arrestor and
- Dimensions of installation.
Brief introduction of all are given below.
Lighting Strike Density (Ng)
It is the measure of lightning strikes per kilometre square per year in the particular area.
Higher the lighting strike density, higher the probability of lightning strike which needs higher level of lightning protection level.
Danger for People (h)
It is the factor of presence of people and panic in the building in case of a lightning strike.
| No particular danger | 1 |
| Low panic level(<=2 floors, < 100 persons | 2 |
| Medium risk of panic (< 1000 persons) | 5 |
| Difficult to evacuate (disabled people, hospitals) | 5 |
| High risk of panic (> 1000 persons) | 10 |
| Hazard for surroundings or environment | 20 |
| Contamination of surroundings or environment | 50 |
Occupancy Coefficient (Lf1)
It is the risk reduction factor with respect to theoccupancy of the building / installation. For example, loss due to lighting strike is higher in hospital as compared to a store / warehouse.
| Structure unoccupied | 0.1 |
| Structure normally occupied | 0.01 |
Relative Location of Site (Cd)
It is the risk reduction factor with respect to the location and surrounding of the building / installation. For example, chance of lighting strike is minimized if the building is near to a high tower.
| Structure surrounded by higher objects or trees | 0.25 |
| Structure surrounded by similar or lower objects | 0.5 |
| Isolated structure-No other objects nearby | 1 |
| Isolated structure on top of a hill or a hillock | 2 |
Fire Risk (rf)
It is the risk reduction factor with respect to the flammability of the material present in the building / installation. For example, in case of lighting strike, loss will be very high at a gas station as compare to the cement store.
| Explosion | 1 |
| High | 0.1 |
| Ordinary | 0.01 |
| Low | 0.001 |
Continue reading in Manual (available for download below)
| Software: | Lightning Protection Risk Assessment Calculator |
| Version: | – |
| Developer: | Shafqat Ali |
| Size: | 578 KB |
| Price: | Free |
| Download: | Right here | Video Courses | Membership | Download Updates |
| Manual: | Right here | Video Courses | Membership | Download Updates |
how can i download the excel sheet for risk assessment calculator?
for project-electrical
Please send the calculation sheet
Dears
I need lightining risk assessment calculation excel sheet
Tool would be usefull if all the parameters such as lightning density, Rd, Ri and Pd the protection level for specified areas/conditions are explained and given.
Without these the calculation tool would be redundant.
keep share articles.. i , . i’m working as project consultant need complete version.thank you
Could you send me the software for calculations Lightning Protection Risk Assessment Calculator,
Thanks about.
Thanks for the information. I have a project Power station at Kurd, Iraq, where I have to do lighting calculation. I have IEC 60325 all 4 volumes and BS 6651. .The client requirement is to do in accordance with IEC
Let me work on it
Hi, Sasi G, What is the basis of LPL selection.
I can’t find a course in risk assessment of LPS. Can you help me, please?
Please advise a course for risk assessment calculation for Lightning protection.
Also please advise the best software for risk calculation as per BS 62305.
I’m a Colombian engineer, and I think. It’s a Good thing you lead us to download the software because the norma is so difficult for your interpretation. I have a worksheet in Excel made by me, but at some points, I look confused.
Thank You.
buen dia. donde consigo el software iec Risk assessment ligthing?
Me podrian enviar el soft evaluacion del riesgo por rayo (IEC Risk assessment ligthing)
Muchas , muchas gracias
Great work. Can’t get the software
How can I get the values of lightning strike density per year in that area . Who will provide that information
How to calculate the lightning protection, because it is risk assessment, please
thank you very much.
Greetings from Mexico
Can you give me the software in Spanish, please?
Dear Sir
Could you send me the Fire Risk Assessment for substation form
Thank you so much
Best Regards
DL Thien
Necesitaria software en Esoañol.
Gracias
Ruben Benitez
Tierra del Fuego – Argentina
Wow! I like the software, I compared its results with a risk assessment that I did manually and the two results are almost similar.
Hello
I can´t donwload the arhive.
The archive no dowload.
Thanks
Try now, it’s fixed.
Hi, can I get the LPL / Class after I do this risk assessment? I have a task to determine LPL of a structure and still cannot find calc that will give me an answer to it.
Your reply will be appreciated!
I have a question.
How can i see the calculation result? I can not see the result after enter some information..
Excel sheet only one and It’s locked even..
Please give me a instruction. Thanks.
I have a question.
How can i see the calculation result? I can not see the result after enter some information..
Excel sheet only one and It’s locked even..
Please give me a instruction. Thanks.
Dear manger,
i have roof top with 13 meters width and 19 meters length and the high of the building is
45 meters,
will you please give the total copper that imus use thank you
Its a great software, thanks!!
There is a question about Occupation coefficient of structure that I don’t really understand what it means.And I couldn’t find any similar parameter in 62305-2.
Could you please help me explain this item? Thanks a lot!!
really it will be great to calculate the lighning stike for high rise building. thanks
Hi
Great software and very useful
Can I have the mail address of the author of this software?
I would suggest some improvements
Regards
(I’m a engineer)
big thanks