BURIED FUEL TANK

It consists of a horizontal cylindrical tank suitable to be buried.
Built with a double chamber with sealing and leak searching control system. Inner chamber in high quality 4 mm. steel plate. Hermetic sealing construction by means of electric bead welding of the bottom pressed plates. External chamber built in high quality steel plate with corrosion protection lining in fibreglass –reinforced plastic. Welded Metal eyebolts for the hoisting of the tank.
The overflow well complete with chequered steel plate closing lid, is provided with internal hatchway consisting of bolted and sealed neck flange.
The following are installed inside the hatchway:
-The loading cap complete with loading limiting device which interrupts fuel flow when 90% of the tank’s geometric capacity is reached (limiting loading valve approved by the ministry at the Italian Centro Studi ed Esperienze Anicendio).
- Nipple for vapours vent pipe.
- Nipples for fuel suction and overflow backflow pipe.
The following are also available : nipples for the installation of a possible level indicator for signalling fuel stock and the installation of a water presence indicator. Bolts for connecting tank and overflow well’s lid to grounding are foreseen together with the copper plate for grounding the tank truck pinchcock. Pipes can be connected to the pipe fittings by means of a side wall on the overflow well on which there is a hole with suitable dimensions.
Tank construction is carried out according to rule n.73 dated 29707/1071 of the Ministry of Interns.
The hydrostatic test is carried out at a pressure greater than 1Kg/cm2.
The multiple valve is fitted on the fuel suction connection. The valve ( approved by the Ministry at the Italian Centro Studi ed Esperienze Ambientali ), is complete with:
- Rapid closure interception device activated remotely by means of a removable handle to be kept outside the premises.
- Fuel suction pipe
- Socket for the connection of the possible pneumatic fuel level indicator
All the documents relevant to the pressure tests, the limiting loading valve type test and the multiple valve type test are supplied for approval by Fire Department.