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Australian Panel Tanks have moved away from the pressed steel panels to a fabricated panel that allows us to meet the clients dimensional constrains in confined spaces.
Materials used are:
Galvanized mild steel, Epoxy Coated mild steel, 304 & 316 Grade Stainless Steel.
The panels are manufactured in standard panel sizes of 1000mm x 1000mm but can be manipulated to suit almost any possibility with thicknesses ranging from 2-6mm depending on tank depth and use.
Steel used in plates, stays, cleats, etc, Tank plates are bolted together using a potable water approved sealant. For ease of access to bolts, tanks are supplied with external flanges unless customers specify otherwise. The width of plate mating flanges is not less than 50mm and the holes for bolts have a clearance of 2mm dia with hole spacing not less than 60mm.
To support pressures exerted by the tank’s contents, the sides of all tanks at the junction of four plates are supported by rolled steel angle stays attached to cleats of equal strength bolted to tank plates. The pattern of internal stays depends on tank size and varies between horizontal, vertical and diagonal.
Tough, vandal resistant for unsupervised sites
Easy to build, only moderate skills required
No on-site welding, no fire hazard
Flexible system, capacity almost infinitely extendable
Low physical profile (at ground level)
Ideal for temporary requirements being simple to dismantle
Technical support provided for site measurements and advice
Technical drawings provided
Full tank erection and site inspection by trained staff
To maintain water quality, tanks should be periodically drained, cleaned and disinfected. To ensure continued water supply during cleaning, divided tanks can be supplied where one compartment is used while the other is cleaned.
Cover and roofs
The roof construction is designed to support the weight of maintenance personnel and their equipment. Design superimposed load is 0.75kN per m 2 . Flat covers can be provided for use inside buildings. Pitched roofs are recommended for outdoor use to allow rainwater to run off. All roofs are fitted with a lockable 600mm 2 hinged and sealed manhole. Modular steel tanks are not designated as pressure vessels
General construction
Each construction site is inspected by a qualified APT supervisor prior to delivery, to ensure adequacy of site access and suitability of foundations. An experienced team will build your tank and leave it ready for commissioning. Supervisors may also be provided for overseas contracts. Customers should, however, observe the following checkpoints before calling APT to site:
Tank supports
Externally flanged tanks at ground/floor level require dwarf walls or piers, either of brick or concrete, with footings suitable for the bearing capacity of the subsoil. The walls should be at least 500mm high for tanks 2m wide; 600mm high for tanks 3m wide and over. They must run in one direction only with centers at 1000mm. They should extend at least 150mm beyond the tank at each end. Dwarf walls should be between 150 and 225mm wide.
Access
To allow access to bolts, a clearance of 500mm should be provided all round the tank. When tanks are fitted with a roof, a distance of 750mm should be left between the roof and any ceiling to allow access to the manhole. It must be emphasized that it is the customer’s responsibility to ensure adequate clearance around the tank and the company reserves the right to charge extra for abortive site visits caused by inadequate support foundations or insufficient clearance.
Hoisting and services
The contractor is responsible for hoisting the panels to within 6m of and on a level with the final position. If required, the contractor will also provide scaffolding, light and power free of charge.
Health and safety
APT reserves the right to refuse to carry out work in unsafe conditions. Erectors will observe site safety rules under relevant national and local health and safety regulations.
Delays
APT reserves the right to make additional charges for delays caused by preparatory work not being completed in accordance with its requirements.
Pipe connections and fittings
All pipe connections are made at APT factory before dispatch and customers are asked to provide full details when ordering. The type of pipe connection should be specified together with the relevant standard to which the coupling flanges are drilled or the pipes screwed. To assist delivery, the size and position of each connection should also be specified at the time of ordering. Ball and gate valves and all pipe work (including bends and flanges) can be supplied if specified at the time of ordering. Connections can be supplied as flanged spools or for small pipe work, screwed sockets to BS1387.
The connections are shop-welded to the plates in positions agreed at the time of order.
Pipe work configuration
The inlet or delivery pipe can enter the tank through either the sidewall at the top of the tank or through the tank base. Flow can be controlled through a ball valve, equilibrium float valve or automatic float switch. The outlet or service pipe should be taken through the base of the tank and fitted with an internal bell mouth pipe or rose strainer to prevent suspended matter entering the water supply. The overflow should always be fitted to give at least 75mm of freeboard below the top of the tank in accordance with the AS/NZS3500, or other regulations, to give the required air gap. The washout pipe opening should be fitted flush with the bottom of the tank and a sluice valve fitted immediately below the tank base.
Filling and testing
Hydrostatic test should be conducted as soon as possible after the tank is built and in any event within the time specified in APT’s warranty conditions.
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