SDT SDT340 - Introduction; Field of Application

DC.R340TT.MAN.001—01—User Manual SDT340TANKTEST EN
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4. Introduction
The SDT340 TankTest is a control and diagnostic tool for underground storage tanks. The SDT340
includes the following features:
• Ultrasound and vibration measurements
through 2 input channels
• 0 Hz to 100 kHz Bandwidth
• 10 minutes record length
• Tree database structure, organized by tank
• 3.5” full-color display 320x480
• On-screen Time Waveform
• Signal play back
• 256 kHz sample rate, reduced to 32 kHz by
heterodyning
• 6.5 GB data memory
• Quick and intuitive navigation through
database nodes associated with tanks
• Recall of historical data in-the-field
• Bluetooth for wireless audio
streaming
5. Field of application
The SDT 340, in its TankTest configuration, embeds a guided procedure, detailing the different steps
of the control of the tightness of an underground storage installation through the acoustic method.
The procedure does not prejudge, in particular:
- The different preliminary operations, emptying, cleaning, degassing of the tank
- The measures to be taken in order to ensure the safety of the personnel and the third parties
- The use of individual and collective protective equipment
- The regulatory measures to be taken in the event of a leak
The procedure is to be used to ensure the following controls, within a regulatory framework:
- The control of the tightness of a tank with a single metal shell. This check is carried out after
cleaning, degassing the tank and reassembling the manhole cover without reconnecting its
pipes.
- The inspection of an installation composed of a single shell tank and its pipes. This tightness
control is performed after cleaning, degassing the tank, reassembling the manhole plate and
reconnecting its associated piping.
- The inspection of the pipes associated with a double shell tank, without cleaning and degassing
of this tank.
In the first two cases, after cleaning the tank, the remaining noble product can be put back in the tank
before its control.
This procedure is adapted to the regulatory control of storage installations used for heating
installations, equipped with tanks and pipes described below, excluding any other type:
1 - NF M88-512 Steel storage tanks - Horizontal tanks for liquid flammable products
2 - NF M88-553 Steel tanks in service with reinforced plastic lining for storage of liquid
petroleum products
3 - EN 12285-1 Steel tanks manufactured in workshops
Part 1: Horizontal cylindrical single and double shell tanks for the underground storage
of flammable and non-flammable water contaminating liquids