The tank is opened for inspection, completely emptied and all sediment residues are meticulously removed.

Yes, the water is already pre-filtered when it enters the tank. Important safety note: Rainwater is not approved for direct drinking water use!

As the tank is typically positioned lower than the extraction points, water extraction is ensured by a specialized pump.

Yes, this is necessary for new builds. No excavation work is required when converting an existing tank.

As rain brings in very fine particles (soot), we recommend pumping out the tank every 3 to 5 years and carrying out a thorough cleaning to ensure the water quality in the long term.

Visit the rainwater new tank systems section of this website.

Visit the section Conversion of heating oil tank for rainwater on this website.

Visit the New tank systems section of this website

Watch the video on the subject of leakage warning devices.

Link: https://luethi-tank.ch/service-und-zubehoer/#leckwarnger%C3%A4te

Watch the video on the subject of tank dismantling.

Link: https://luethi-tank.ch/heizoel/#demontage

The special filtration (GAF filter) eliminates even the smallest dirt particles. This prevents damage and burner failures caused by contaminated oil. The main application is typically during tank decommissioning.

Watch the video on the subject of tank coating. Link: https://luethi-tank.ch/sanierung/#beschichtung

Manhole cover replacement: options and implementation.
Take a look at the videos on the subject of manhole covers.

• 100/125cm manhole cover / manhole cover
• 80cm manhole cover / manhole cover

Link: https://luethi-tank.ch/sanierung/#schachtdeckel

A complaint indicates cracks/damage in the drip tray. As the room must be legally watertight, we carry out a water test to finally determine the watertightness. We are happy to support you in the renovation.

The innovative renovation of underground tanks. We use a tailor-made inner shell. A continuous vacuum is created between the shell and the tank wall, which acts as a permanent leakage monitor for both walls.

You can find more information here: https://luethi-tank.ch/sanierung/#tankraumsanierung

By the end of 2014, all single-walled, underground storage tanks had to be fitted with a double-walled safety system. In this installation, a custom-made inner shell is produced on the existing tank. A permanent vacuum is created between the tank wall and the inner shell. The vacuum takes over the task of continuously checking both the tank wall and the inner shell for leaks.

Link: https://luethi-tank.ch/heizoel/#sanierung

190923132311_Merkblatt_E1_September_2019.pdf

Defective systems do not receive a filling permit. Primary indicators: Corrosion damage to old double-walled underground tanks, ageing of tank liners (30 years and older) and loss of stability in plastic/small tanks.

Both systems automate the stop of the filling process. The filling safety device is the modern, electro-optical probe. The overfill protection is mechanical and a rudimentary alternative for existing systems.

Link: https://luethi-tank.ch/service-und-zubehoer/#abf%C3%BCllsicherungen

Watch the video about the burst protection.

Any costs for material replacement and necessary repairs will always be settled by prior agreement between you and the tank inspector.

The price includes:

• Approach and set up the workplace.
• Construction of a temporary heating system to ensure operation.
• Pumping and temporary storage of up to 15,000 liters of oil.
• Removal/disposal of up to 100 liters of sludge.
• Cleaning, detailed corrosion control.
• Testing of tub/fittings.
• Audit report and official notification.

Exclusive: Material replacement/repairs.

The tank does not necessarily have to be empty. We can temporarily store up to 15,000 liters of oil in special trailers. This quantity is pumped out, filtered if required and refilled at no extra cost.

As a rule, we require two parking spaces near the filler neck. If you are using public land (blue zones), please inform us in good time so that we can obtain the necessary permits.

Transfer the responsibility to us. The inspection with internal cleaning fulfills your duty of care, helps to maintain the value of your tank system and activates your insurance cover.
Link: https://luethi-tank.ch/heizoel/#revision

According to Article 3 of the Water Protection Act, you are obliged to check the system regularly for defects and leaks and to repair any damage immediately. An inspection by a specialist every ten years is recommended to fulfill this obligation.

We generally recommend carrying out a tank inspection with internal cleaning every ten years.
Link: https://luethi-tank.ch/heizoel/#revision

Yes, the inspection is required by law for properties in the sensitive groundwater zones S/A/Z. For all other systems, we recommend a ten-year cycle (personal responsibility).

The inspection with internal cleaning significantly maximizes the operational reliability of your system and guarantees the long-term value retention of your heating infrastructure.
Link: https://luethi-tank.ch/heizoel/#revision

Contact the relevant cantonal office. See list of cantonal offices for environmental protection in Switzerland We will be happy to carry out clarifications on your behalf (except for the canton of BE).

Maximum 15,000 liters. Precise stock information is essential. Ideally, measure the oil level with the dipstick.

As the customer, you determine the timing as a priority. The ideal time for us is
– to carry out the revision before refilling.
– if you as the customer are at home. If this is not possible, we will find a solution.
– if you give us a time period – so we can schedule as optimally as possible.
In principle, we always schedule at least one week before the date if possible. Ideally by telephone or e-mail.

We recommend that you check both the renovation of your underground tank and the new small tank system. The price differences are often not as great as often assumed. We will be happy to offer you both options.

Heating oil should be stored in a dark place with as little temperature fluctuation as possible. Second-hand tanks should not be older than 10 years. It is worth having the installation carried out by a specialist company.

Decommissioning, decommissioning including dismantling or, in the case of underground tanks, conversion to rainwater tanks.

Yes, every officially approved tank – regardless of the material or size – must be decommissioned by a certified specialist company. https://luethi-tank.ch/de-ch/Heizoel/Tankrevision/Gesetzliche-Grundlage

No, the revision is also possible during the cold season. We provide a powerful temporary heating system at no extra cost.

Since January 1, 2007, owners of tank installations in water protection zone B no longer receive a request for tank inspection from the respective water protection office. However, the request is officially published (gazette). The responsibility for regular maintenance of the tank system and liability in the event of damage therefore lies entirely with the owner of the system.
We recommend that you have the tank inspection with internal cleaning carried out every 10 years, as before, to maintain operational safety and preserve its value. If the intervals are longer, the prescribed regularity is no longer guaranteed. This may result in a reduction in insurance cover.

Heating oil is an organic product and is therefore subject to a natural ageing process. Temperature fluctuations during the year cause condensation to form which combines with oil sediments. Even today, certain heating oils already contain bio-oil. All of this then collects on the bottom of the tank. This sometimes quite aggressive oil sludge can lead to corrosion in the tank. With larger quantities – which is rather rare – there is also the possibility that it can enter the heating burner via the product line.
With an internal tank cleaning, we guarantee you 10 years against rusting through of the tank, which also removes oil sludge and condensation. The result: your heating system will work more reliably for years to come.