Underground tank leak detection in Khafji: before buying or handover

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Underground tank leak detection in Khafji: the local context

Main roads in or near Khafji: King Abdullah Road. Team note on Khafji: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins..

Khafji is about 2 km from the sea coast (OpenStreetMap). The centre of Khafji sits about 9 m above sea level (SRTM open elevation data).

Before buying underground tank leak detection in Khafji, it helps to start with the place itself. The centre of Khafji sits about 9 m above sea level, according to SRTM open elevation data, and the town lies about 2 km from the sea coast, as shown by OpenStreetMap. Those two facts shape how a technician thinks about a buried tank here: a site that is close to the coast and only a few metres above the water line can have a shallow groundwater table and salty soil conditions, which affect both corrosion and how a leak shows up in monitoring readings. Checking the site's distance to the shoreline and its elevation first gives a sound starting point before any equipment is chosen.

Some matters cannot be settled from a desk and are left to the site visit. The technician will need to see the tank's age, its material, the condition of its internal lining, and how the fuel or liquid is stored and drawn off. Where a tank has an internal coating, the cost of recoating is commonly quoted at SAR 25–60 per m², but the actual figure depends on the tank's surface area and the state of the existing surface, so it should only be discussed after measurements are taken on the ground. The visit is also the time to walk the route of pipes and fill points and to note any signs of past spills or staining.

To help the technician, gather the information that is already on hand before the visit. Write down the tank's installation date, its capacity, the material it is built from, and any repair or inspection records. Note what the tank holds, how often it is filled and emptied, and whether any leak has been suspected before. Mark the exact position of the tank on a sketch of the plot, including the nearest building and the line of the access road. With these details ready, the technician can focus the visit on testing the tank rather than on basic questions, and the resulting advice will fit the site in Khafji rather than a general case.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

Signs that call for underground tank leak detection

If you notice one of these signs in Khafji, it is a good moment to talk to the team:

• The pump runs for longer periods
• A noticeable drop in the water level overnight
• Damp or salt marks on the tiles above the tank
• The tank needs refilling faster than usual

Causes we see in the field

• A float valve that does not close, so water is wasted.
• A common cause: cracks in the concrete tank walls or floor.
• A common cause: construction joints and corners.

Tools and methods, and when we use them

How the work is done, step by step

1. Safety first: Tank lids and confined spaces are handled with ventilation and a second person on site.
2. Documented level test: Filling and use are stopped and the level is recorded against time.
3. Isolating the tank from the network: This tells us whether the loss is from the tank body or from the supply line.
4. Checking the body and connections: Inlet, outlet and overflow connections are inspected.
5. Recommendation: You get the next step in writing: repair, waterproofing or a line test.

Quick comparison: facts and costs in Khafji

Questions from Khafji

What we advise against

• Ignoring the float valve
• Waterproofing the tank before confirming the loss is from the tank and not the line

What you get after the work

You receive: the written level-test result and the recommended next step, in a technical report with a verification code.