SCIOS Inspections: What is it? How does it work?

Since January 1, 2016, the SCIOS inspection is legally required. What exactly does a SCIOS inspection entail? We explain that to you in this article. A SCIOS inspection is simply no more than a special inspection for combustion plants. Emergency power generators are included in combustion plants and the SCIOS inspection is therefore also mandatory for this. 

The reason that a SCIOS inspection is mandatory is for environmental and safety reasons. Even if an emergency power generator only runs when the power goes out. The SCIOS inspection consists of many different parts, also called scopes. Now not all scopes are relevant for emergency power generators. The most relevant scopes for emergency power generators are scope 4, scope 6 and scope 7C only. Here is some more information about the respective scopes:

  • Scope 4: The inspection of the combustion engine and gas turbines. This must always be carried out on aggregates with a thermal input of 20 kW or higher. Not sure if your generator falls under this? We are happy to help you!
  • Scope 6: The emission measurement. This is mandatory for installations that run more than 500 hours per year. Is your installation running fewer hours? Then this emission measurement does not simply expire. You must be able to demonstrate that your installation actually runs for less than 500 hours and that you only use the generator for emergency power.
  • Scope 7C: Concerns inspection of the fuel supply line. This scios scope only applies to installations with an external tank. 

For a clearer overview of the different scopes, you can view the image below.

Would you like to know more about SCIOS inspections?

Every situation is different. That is why we are happy to inform and advise you without obligation, based on your specific situation and machine. 
By contacting us, we can offer you tailor-made advice and come up with a suitable solution together.

The SCIOS inspection actually consists of two steps: the First Special Inspectorate (EBI) and the Periodic Inspection (PI). 

Step 1: First Special Inspection (EBI)

The First Special Inspection only applies if you have a generator that has never been inspected. This inspection checks whether the installation and the design of the generating set comply with the applicable standards and regulations. Subsequently, the inspection instructions and limit values ​​are recorded. These are relevant for subsequent inspections and are an essential step in the procedure. The mechanics of ABATO Motoren are all SCIOS certified and can perform this inspection for you. 

Step 2: Periodic Inspection (PI)

After the First Special Inspection, your installation must be inspected periodically. The frequency with which this must be done depends on the input power of the generator. For aggregates up to 100 kW thermal input, this inspection must take place every four years. For larger aggregates, this inspection must take place every 2 years.

The inspector checks the aggregate on the basis of the report drawn up after the first special inspection. This involves looking at the safety provisions present, any adjustments that have been made and whether the maintenance performed has demonstrable results. In addition, the inspector also checks the number of operating hours. The generator is checked whether it has been running for more than 500 hours and whether the generator is only used for emergency power or not. When the generator makes more than 500 operating hours or when it is used for other purposes than just emergency power, the SCIOS scope 6 inspection will be carried out. The scope 6 inspection is a firing test in which the engine combustion, fuel consumption, temperature and CO2 emissions are measured. 

What is also good to know is that the SCIOS inspection institute has a national system. This is where all tests and inspections are registered. This allows environmental officials and regulators to see whether you are complying with the obligations. This generally results in a lower chance of additional checks. 

Need a SCIOS inspection? We are ready for you!

At ABATO Motoren you have come to the right place for SCIOS inspections. Our experienced technicians are certified to inspect and test your generator. These tests and inspections can also be combined with maintenance of your generator if desired. You can contact us via our contact page for questions, drawing up a maintenance contract or to make an appointment. In addition, you can call +31 (0)88 2228600 or email to You can also use our handy maintenance calculator for a price indication.

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