External gasholder double membrane gasholder on a concrete foundation

• Sphere diameter: approx. 18.5 m
• Anchoring diameter: 16 m
• Spherical shape: 3/4 D (three-quarter sphere)
• Height above foundation: approx. 14 m
• Total gas storage volume: approx. 2,500 m³
• Wind load: 38 m/s

Technical details:

• Gas storage membrane: FPP, black, biogas-resistant

• Weatherproof membrane: PVC-coated polyester fabric, UV-protected, with surface sealant on both sides (finisher)

• Base sealing: PE-LD membrane and protective fleece for sealing the base plate

• Connections: Includes 2 standard connections at the base, as agreed upon

• Suction protection: Suction protection for gas extraction (perforated pipes)

• Blower set (2 units): Blower (ATEX), connecting pipe, spiral hose, exhaust damper
• Anchoring: Stainless steel flat profile, bolted to the top of the foundation
• Level indicator: With 4-20 mA signal
• Stabilization system: Included

• Pressure measurement flange: Included

• (Connection of all electrical components by a qualified electrician)
• Note: No maintenance shafts or similar installations
Operating parameters:

• Operating pressure: +2 to +3 mbar / -1 mbar
• Maximum gas pressure: +5 mbar
• Gas withdrawal: max. 300 m³/h (expandable)
• Color: Standard color upon agreement

Note: Depending on the input material and operating conditions, color changes may occur ("browning").

Safety devices:

• Over/under pressure protection: Stainless steel, DN 150 flexible

• Overpressure volume: approx. 450 m³

• Underpressure volume: approx. 350 m³
• Important note: Depending on gas production and storage size, multiple over/underpressure protection devices may be required!

• Setting values: at gas pressure +3.5 mbar, -1.0 mbar