Underground tank leak detection in Jubail: without breaking

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

Before we start: what we know about Jubail

The centre of Jubail sits about 4 m above sea level (SRTM open elevation data). Jubail is about 0.9 km from the sea coast (OpenStreetMap).

Team note on Jubail: 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..

Is there a way to check an underground fuel tank for leaks in Jubail without digging up the yard? Yes, and the setting matters. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast. Ground in this part of the Eastern Province is therefore close to the water table, and low-lying, coastal soil can hold moisture and salt that wear down buried steel. For a property owner, that is a good reason to check a tank on a regular schedule rather than waiting for a fuel smell or a drop in stock to reveal a problem.

The inspection starts with a visual and records review, followed by testing that keeps the tank and surrounding paving in place. The technician looks at fill points, vent lines, dispensers and any monitoring wells for signs of staining or wet soil. Where a tank has an internal coating, its condition is assessed, and if repair is needed the cost is estimated per square metre, which for internal coating runs SAR 25–60 per m². Test results are compared with earlier records so that slow changes show up before they become a larger loss. The report then states what was tested, what was found and which items, if any, need follow-up work.

To make the visit efficient, gather the tank's installation date, any earlier test certificates and a record of recent fuel deliveries and stock readings. Clear access to the fill caps, vent pipes and dispenser islands so the technician can work without moving vehicles or equipment. Tell the team about any past spills, odours, or repairs in the yard, and note whether the site floods after heavy rain, since standing water near a tank in a coastal town can affect both readings and the tank's condition. Having these items ready lets the inspection focus on the tank itself and gives you a clear, documented result for your records.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs that call for underground tank leak detection

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

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

Causes we see in the field

• Construction joints and corners.
• Cracks in the concrete tank walls or floor.
• A float valve that does not close, so water is wasted.

How we choose the tool in Jubail

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.

Jubail in facts and sources

Short answers for Jubail

Mistakes that cost more

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

What you receive

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