Standard NBN D 51-006 – CERGA Accredited Body

LPG gas installation inspection for tank-fed systems

Compliance inspection for butane/propane (LPG) installations ≤ 70 kW. For houses, holiday homes and properties fed by tank or gas cylinders. Official certificate issued on site.

Book my inspection Conseil gratuit : 02 880 21 71
  • Appointment within 48h
  • Tanks and cylinders
  • On-site report

Tank-fed installation Butane / Propane ≤ 70 kW

From
€165 incl. VAT

  • Inspection compliant with NBN D 51-006
  • Official compliance certificate
  • Tank installations (above-ground / buried)
  • Gas cylinder installations

What is an LPG installation inspection?


The inspection of a butane or propane installation checks the compliance of the
entire indoor network: pipework, connections, combustion appliances and ventilation systems, according to standard NBN D 51-006.

It applies to individual houses, apartments, mobile homes or commercial premises supplied with gas cylinders or a propane tank.

Important: inspection scope
Our inspection covers only the indoor installation (after the regulator). The tank itself is not inspected by us: it is covered by a maintenance contract with your gas supplier (Antargaz, Primagaz, etc.).
  • Norme NBN D 51-006
  • Attestation officielle

Inspected elements

Fixed pipework after the regulator

Flexible and rigid connections

Regulator and pressure regulator

Combustion appliances (boiler, cooker, water heater)

Low and high ventilation of rooms

Evacuation of combustion products

Shut-off valves and safety devices

  • Non included: the storage tank (inspected by your gas supplier).

When is the butane / propane inspection mandatory?

Installations using liquefied petroleum gas (LPG) are subject to the same regulatory requirements as natural gas, with specific features related to storage and ventilation.

New installation

Every new butane or propane installation must be inspected before first commissioning. The installer must use an accredited body.

Supplier change

When changing gas supplier or installing a new tank, a compliance inspection may be required.

Major modification

Adding or replacing an appliance, modifying pipework or changing gas type requires a new inspection.

Sale or rental

For a property transaction or rental, a recent gas compliance certificate may be requested by the buyer or tenant.

Inspection scope

Our inspection covers the indoor installation only: pipework after the regulator, combustion appliances and ventilation. The propane/butane tank is not included – it is inspected by your gas supplier as part of your contract.

LPG-specific inspection points

The inspector checks elements specific to butane and propane installations, in addition to the standard checks applicable to any gas installation.

  • Mandatory low ventilation

    Since LPG is heavier than air, low ventilation near the floor is essential to evacuate any potential leaks.

  • Regulator and pressure regulator

    The transition from liquid gas to usable gas requires a suitable regulator. Its correct operation is checked during the inspection.

  • Service pressure

    The pressure of the LPG network differs from that of natural gas. Appliances must be adapted and correctly adjusted.

  • Safety devices

    Shut-off valve after regulator, flow limiter, non-return valve: several safety devices are checked on the installation.

  • Connections and pipework

    All couplings, flexible and fixed pipework of the indoor installation are inspected to detect any potential leak.

  • Flue gas evacuation

    The combustion product discharge ducts are checked to ensure correct draught and prevent any backflow.

LPG gas installation inspection prices

Transparent prices for the inspection of your butane/propane tank installation.

METER OPENING
Standard inspection

Tank installation

€165 incl. VAT

  • Full NBN D 51-006 inspection
  • Compliance certificate
  • Brussels, Wallonia, Flanders
Installation commissioning

New installation or CERGA

€170 incl. VAT

  • Tank commissioning
  • CERGA certificate
  • New installation
Extra meter

Same address

€135 incl. VAT

  • Reduced rate
  • During the same visit
  • Certificate per meter
Isometric plan

Optional on request

+€40 incl. VAT

  • Gas network diagram
  • Drawn on site
  • Required by suppliers

Add when booking

Reminder: The inspection covers only the indoor installation (after the regulator). The tank is inspected by your gas supplier.

* All prices include VAT (21%). Valid for Brussels, Wallonia and Flanders.

Frequently asked questions – Butane / propane inspection

Everything you need to know about LPG installation inspection.

Butane (boiling point 0°C) is used for indoor cylinders and portable appliances. Propane (boiling point -42°C) is stored in an outdoor tank and remains gaseous even in cold weather. Both are inspected according to the same standard NBN D 51-006.

No, our inspection covers only the indoor installation (after the regulator): pipework, connections, appliances and ventilation. The tank itself is covered by a maintenance contract with your gas supplier (Antargaz, Primagaz…) who carries out their own periodic inspections.

If your installation is fixed (pipework, permanent connections, fixed appliances such as a boiler or built-in cooker), an inspection is recommended. For a simple direct connection of a cylinder to a portable appliance, the inspection is generally not mandatory.

The tank (above-ground or buried) is inspected by your gas supplier as part of your contract. Our inspection covers only the visible part of the indoor installation: regulator, pipework after the cabinet, ventilation and combustion appliances.

Yes, if your street is connected to the natural gas grid. Note: your appliances must be adapted (nozzle replacement, pressure adjustment). An inspection of the modified installation is required for commissioning natural gas.

Allow approximately 45 minutes to 1 hour for a standard installation. The time may vary depending on the number of appliances, the complexity of the installation and the accessibility of the elements to be checked.

CERGA Accredited Body

Have your LPG installation inspected by an expert

Receive your butane / propane compliance certificate. Our inspectors are trained in the specific features of liquefied gas installations.

Book my LPG inspection 02 880 21 71
  • Appointment within 48h
  • On-site report

© Certinergie NPO – VZW rue Haute Voie 5 4537 Verlaine / Chaussée de Tirlemont 156, 5030 Gembloux / Brusselsesteenweg 599,3090 Overijse / Avenue Louise 367 1050 Bruxelles RPM ASBL 0536.501.654. RPM SRL 0831.937.722. Certinergie Luxembourg SARL