GRP SECTIONAL WATER TANKS

With an unrivalled reputation for quality and service Balmoral offers sectional tanks, which can be pre-insulated, ranging from 1m³-10,000m³ litres capacity and erected to a height of 4m in 1m and 0.5m increments.

These tanks are designed and manufactured to BSEN 13280 standards and carries WRAS approval for potable water storage. All panels are fully tested to resist pressures in excess of six times their working pressure.

✓ Design

▸ Designed to BS EN 13280 (2001)

✓ Automated manufacturing

▸ Consistent product offering dimensional stability

✓ Automated finishing

▸ Provides high levels of accuracy

✓ High grade materials

▸ Improved resistance to bacterial growth, increased water resistance, reduced risk of osmotic attack. Colour 00-A-05 to BS 5252

✓ UV stabilised materials

▸ Suitable for global climatic conditions

✓ 100% opacity

▸ Prevents algae growth

✓ Heavy duty cover

▸ Low maintenance, resists wind and snow loadings. BS 6399 Pt1 (1996)

✓ Integrated insulation

▸ Provides U value of 0.6W/m2K. CFC and HCFC free. Suitable for water storage up to 38ºC

✓ Exclusive sealant

▸ WRAS approved, provides optimum performance under varying climatic conditions

✓ Bracing

▸ Designed to BS 6700:1997 to limit structure deformation

✓ WRAS approved

▸ Tanks compliant to WRAS Section 0135, fittings compliant to Water regulation 16 (Byelaw 30) for tanks to 4m depth

✓ QA

▸ Balmoral Tanks is certified to BS EN ISO9001:2015

The Balmoral range of sectional GRP tanks may be specified as either externally flanged base (EFB) or internally flanged base (IFB). This allows the use of either flat continuous foundations, close centre beams, pier walls or bearer beams depending upon the type of base required. The internally built tank (IBT) to be supported as standard on an IFB foundation.

The EFB specification is fully self draining allowing ease of maintenance and cleaning.

• Flexibility of panel sizes allows connections to be agreed on site to suit actual tank location
• Modular design provides ease of transport and flexibility of assembly on either a prepared flat and level concrete foundation, support walls or bearer beams
• Panels are rigidly supported by a combination of stainless steel tie rods internally and galvanised box sections externally
• Installation is carried out by Balmoral approved installers, fully trained to provide total unified responsibility

EFB: Externally flanged base, externally flanged sides

IFB: Internally flanged base, externally flanged sides

IBT: Internally flanged base, internally flanged sides

Pier walls
For EFB tanks allowing self drain. 1m centres required.

Close centre beams
IFB and IBT tanks may also be supported by steel bearer beams.

Flat foundation
For IFB and IBT tanks. Flat screed concrete foundation to be level and not vary more than 2mm p/m or 6mm p/6m, measured laterally or diagonally. Levelling steels are recommended due to difficulties in achieving +/- 2mm per metre over whole base area.

Design

The design of each sectional tank panel is modelled using FEA software. This allows fine detail to be thoroughly investigated and improved before proceeding to mouldmaking and production.

Materials

All materials used in the production and assembly of Balmoral GRP tanks are rigorously tested for potable water compatibility. This includes long term material performance and mechanical properties, non-metallic components, adhesives, etc. Combined, these analyses form the basis of the company’s extensive QC procedures.

Manufacturing process

Balmoral sectional tank panels are hot press moulded in glass reinforced plastics (GRP) using isophthalic unsaturated polyester resins and electrical glassfibre reinforcement.

The panels are moulded at temperatures up to 150°C under strict quality control disciplines. The process results in strong, consistent panels which are fully cured, dimensionally accurate with sharply defined profiles and smooth surfaces on both faces.

Drilling and finishing of the panels is undertaken in a purpose built controlled area, where high technology automated drilling equipment is used to complete production to exacting tolerance levels.

Balmoral sectional tanks use expanded polystyrene (EPS) materials in their thermally insulated panels. This is made using a pentane expansion agent which is CFC and HCFC free and can be recycled by melting down and reforming.