Plan your heating oil tank inspection

Follow our practical tips and gather all the necessary documents to get your heating oil tank inspection quickly and stress-free

Wallonia

Mandatory:

Have access to an accessible and functioning power outlet (minimum 16A). Failing this, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged. This requirement only applies to underground tanks.
Provide access to the boiler.
For non-accessible tanks, ensure that the actual fuel level is below 90% of the tank’s capacity in order to carry out the test.
For tanks with a capacity of 3,000L or more (except tanks located in water protection zones, where the threshold is 100L), provide the environmental permit known as the “Class 3 Declaration”.
For tanks of more than 3,000L, or 100L and above in water protection zones, the Class 3 Declaration must be completed and submitted to the competent department of the municipality where the property is located. You must also have a copy available on the day of the inspection.

Download the “Class 3 Declaration” form

In the absence of these mandatory elements, the inspection will be stopped. No certificate can be issued, but a fixed fee of €150 will be charged for the visit.

Where possible:

The tank invoice or building specifications mentioning the heating oil tank
The certificate confirming the installation of the tank and its connection in accordance with the applicable requirements, issued by a qualified expert
The periodic tightness test certificate for the entire installation, issued by an approved technician
The technical data sheet of the material used to waterproof the containment area (if applicable only)

Bruxelles

Mandatory:

Have access to an accessible and functional power outlet (minimum 16A). If not available, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged. This applies only to underground tanks.
Have access to the boiler.
For non-accessible tanks, ensure that the actual fuel level is below 90% of the tank’s capacity in order to perform the test. If the level is too high, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged.
For tanks of 3,000L and above (above-ground), and underground tanks (no minimum capacity), the Class 3 Declaration must be completed and submitted to the competent municipal authority where the property is located. You must also have a copy available on the day of the visit.

Download the “Class 3 Declaration” form

If applicable:

Certificate of conformity for the tank’s double-walled structure.
For an above-ground tank: exemption granted by the competent authorities regarding the requirement for secondary containment.
For an underground tank > 10,000L:
- Cathodic protection certificate issued by a qualified cathodic protection expert.

In the absence of these mandatory elements, the inspection will be stopped. No certificate can be issued, but a fixed fee of €150 will be charged for the visit.

Where possible:

The tank invoice or building specifications.
The certificate confirming installation and connection of the tank in accordance with applicable requirements, issued by a qualified expert.
The periodic tightness certificate for the entire installation, issued by an approved technician.
The technical data sheet of the material used to waterproof the containment area (if applicable only).

Wallonia

Mandatory:

Have access to an accessible and functioning power outlet (minimum 16A). Failing this, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged. This requirement only applies to underground tanks.
Provide access to the boiler.
For non-accessible tanks, ensure that the actual fuel level is below 90% of the tank’s capacity in order to carry out the test.
For tanks with a capacity of 3,000L or more (except tanks located in water protection zones, where the threshold is 100L), provide the environmental permit known as the “Class 3 Declaration”.
For tanks of more than 3,000L, or 100L and above in water protection zones, the Class 3 Declaration must be completed and submitted to the competent department of the municipality where the property is located. You must also have a copy available on the day of the inspection.

Download the “Class 3 Declaration” form

In the absence of these mandatory elements, the inspection will be stopped. No certificate can be issued, but a fixed fee of €150 will be charged for the visit.

Where possible:

The tank invoice or building specifications mentioning the heating oil tank
The certificate confirming the installation of the tank and its connection in accordance with the applicable requirements, issued by a qualified expert
The periodic tightness test certificate for the entire installation, issued by an approved technician
The technical data sheet of the material used to waterproof the containment area (if applicable only)

Brussels

Mandatory:

Have access to an accessible and functional power outlet (minimum 16A). If not available, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged. This applies only to underground tanks.
Have access to the boiler.
For non-accessible tanks, ensure that the actual fuel level is below 90% of the tank’s capacity in order to perform the test. If the level is too high, the inspection will be stopped. No certificate can be issued, and the visit will be fully charged.
For tanks of 3,000L and above (above-ground), and underground tanks (no minimum capacity), the Class 3 Declaration must be completed and submitted to the competent municipal authority where the property is located. You must also have a copy available on the day of the visit.

Download the “Class 3 Declaration” form

If applicable:

Certificate of conformity for the tank’s double-walled structure.
For an above-ground tank: exemption granted by the competent authorities regarding the requirement for secondary containment.
For an underground tank > 10,000L:
- Cathodic protection certificate issued by a qualified cathodic protection expert.

In the absence of these mandatory elements, the inspection will be stopped. No certificate can be issued, but a fixed fee of €150 will be charged for the visit.

Where possible:

The tank invoice or building specifications.
The certificate confirming installation and connection of the tank in accordance with applicable requirements, issued by a qualified expert.
The periodic tightness certificate for the entire installation, issued by an approved technician.
The technical data sheet of the material used to waterproof the containment area (if applicable only).

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For more practical information or questions about preparing for the heating oil tank inspection:

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Plan your heating oil tank inspection

Mandatory:

Where possible:

Mandatory:

If applicable:

Where possible:

Mandatory:

Where possible:

Mandatory:

If applicable:

Where possible:

Any question ?

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Plan your heating oil tank inspection

Mandatory:

Where possible:

Mandatory:

Where possible:

Mandatory:

If applicable:

Where possible:

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