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CEI membership discount

Dear customer,
our systems show that your name is connected to a company associated with CEI: you would therefore be entitled to thediscount reserved for our members for CEI products and services. To check the validity of the association and benefit from the discounts, it is necessary to enter the register number assigned to your company in the box below.

You can continue shopping even without entering the membership register number, but you will not have access to dedicated discounts.


The membership register number has been correctly entered.
From now on, after logging into your MyNorma account, you can purchase our products at the price reserved for our members.

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Flash by CEI

The CEI software for the assessment of the risk linked to atmospheric discharges and for the sizing of the countermeasures
SOFTWARE help_outline
VERSION:  5.4.1
OPERATING SYSTEM:  Microsoft® Windows®

Flash by CEI is the application for assessing the risk associated with atmospheric discharges and for identifying and sizing the related countermeasures.

It allows the quantitative calculation of the risk to people and things, guiding the designer in the choice of the protection measures.

Flash by CEI allows you to obtain:

  • lightning risk assessment
  • the targeted choice of lightning protection measures according to the IEC 62305 standard
  • calculation of the lightning current, of the safety distance and verification of the SPDs
  • economic analysis and comparison of the various design solutions
  • automatic calculation of the lightning collection area from the structure drawing
  • the technical report exportable in editable Microsoft Word format

Guided input of the characteristics of zones, lines and systems

With Flash by CEI the compilation of input data is simple and it is possible to define in a guided way:

  • structures and areas with any characteristics (residential or industrial buildings, hospitals, etc.)
  • external lines and systems inside the structure of any type (energy, telephone, data, etc.)

Lightning risk assessment

The assessment of the overall lightning risk is carried out with details of the individual risk components and according to the types of sources of damage.

This makes it possible to evaluate the potential risk of the structures in detail and to choose the most effective protection measures among those recommended by the technical standards (LPS, SPD, electrical insulation, external shielding, etc.).

The risk assessment allows you to represent the results of the calculation both in graphical and numerical form.

Choice of protection measures and economic analysis of the various design solutions identified

The choice of lightning protection measures is carried out directly on structures, zones, lines and systems in a simple and targeted way.

It can be performed in automatic mode (using the specific “wizard” for the automatic choice of protection against atmospheric discharges) or manually (by selecting the improvement to be applied for the risk component to be optimised).

It is also possible to carry out an analysis of the Risk of Economic Loss (R4).

Calculation of lightning current, safety distance and verification of SPDs

With Flash by CEI With Flash by CEI it is possible to automatically obtain the diagram of the incoming lines of the systems with the characteristics defined in the risk assessment phase and the calculation of the lightning current for each conductor of the line.

It is also possible to calculate the safety distance according to the IEC 62305-3 standard and carry out the electrical checks of the SPDs on the lines (IEC 62305-3/4) automatically and according to the electrical characteristics of the inserted SPDs and on the equipment protection.

The SPDs are chosen directly from a rich, easy-to-use library that can be modified with new components.

Automatic calculation of lightning collection area from structure drawing

The lightning collection area (direct or indirect lightning) can be determined analytically or graphically starting from the design of the structure.

It is possible to start from imported DXF/DWG format files, as a trace to draw structures faster.

Automatic and editable technical report

Flash by CEI automatically generates the technical report in editable Microsoft Word format (RTF), complete with all the calculation results for the entire structure and for each individual zone, line or system.

License mode

Flash by CEI is sold with an annual license (365 days from the date of purchase of the license).

Throughout this period, the user will have the right to use the product on one workstation, as well as to download and install the updates that will be released (major and minor versions).

If necessary (change of PC, breakdown...), the user has the option of moving the license to another workstation from within the program itself.

Minimum system requirements

  • OPERATING SYSTEM: Microsoft® Windows® 7, 8 (not Windows RT), 8.1 (not Windows RT), 10
  • PROCESSOR (CPU): Processor with 2 cores: Intel Core2 Duo 2.4 Ghz or higher
  • MEMORY: 1 GB of RAM memory (3 GB recommended)
  • VIDEO CARD (GPU): Video card with at least 512 MB of memory, 1 GB recommended
  • HARD DISK: at least 2GB of free space (5GB recommended)
  • MOUSE: 3 buttons mouse. Scroll wheel recommended
  • CONNECTIVITY: To access the web functions of the software (activation and recognition at startup, databases, online services, updates, etc.) an internet connection is required
  • PRINTER: any printing device recognized by Windows (necessary if you want to produce paper reports)

Install on Mac

Intel-based Macs running OS X Leopard (10.5) or later are recommended.

Running the application on Mac is only possible by virtualizing a Windows 7, 8, 8.1 or 10 system (both 32 and 64 bit) with one of the following hypervisors:

  • VMWare
  • Parallels
  • Virtual Box
  • Boot Camp


International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

Each field has a two-digit notation, e.g.

  43    Road Vehicle Engineering

The main fields are subdivided into groups (level 2). The notation of a group consists of the field notation and a three-digit group number, separated by a point, e.g.

  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

You can identify the ICS code of your interest by typing the code or a keywordword in the dropdown ICS field, and by selecting one of the filtered results.

Search also in the summary/description of the standard

By flagging this control, the search for keywords will not be limited to the Standard Number and Title fields, but will also be performed in the Abstract of the standard.

This way, you will get more results.

You should use this option when you can not find the desired result with the standard approach and it is necessary to extend the scope of the search: by increasing the number of results, you will increase the number of non-relevant elements, as well.