Supply and Installation of Tanks and Liquid Storage Units

This procurement covers supply and installation of all liquid storage applications including gravity storage/process tanks, silos, pressure vessels, including chemical storage and underground storage. Where relevant, Reg 31, PER (Pressure Equipment Regulations) / PSSR (Pressure Systems Safety Regulations) and DSEAR (Dangerous Substances and Explosive Atmosphere Regulations) regulations shall be followed.

Tanks shall be manufactured to relevant UK industry standards and comply with Anglian Water asset standards and AW amended WIMES and CESWI. Covers and roofs shall be supplied where requested and, where required, all covers and roofs shall be fully self-supported by the tank.

Permanent Access Fabrications (PAFs), including stairways and platforms - access stairways and platforms shall be fully self-supported by the tank Testing - tanks shall be fully water-tested and where a working pressure is specified (above ambient) the tank shall be pressure tested in accordance with UK industry standards and AW asset standards. In the event of a defect or failure during the warranty period of 1 years, the supplier will be expected to repair or replace the product within one working week from the date on which they are notified regarding product failure.

The supplier will be expected to provide temporary assets for the period required to maintain operations that were undertaken by the product whilst repair or replacement is being undertaken. Installation - tanks shall be delivered to site, off-loaded and installed by the supplier and meet all relevant Anglian Water requirements for safe working.

Install of sectional tanks to be done by supplier, install of Pre-Cast Concrete tanks to be done by @one with supplier supervision. Supplier to detail the craneage requirements for off-loading and erection; craneage may be provided by supplier, AW or its Alliances.

Compatibility - tanks must be fully compatible for the application and contents that they are intended to be used for. The design life is to achieve at least the minimum life stated in any applicable standards, where there is a conflict, the maximum life is to be achieved.

Ancillaries and openings - tanks shall be supplied with manholes, connections and ancillaries as detailed in the tank data sheet. All process equipment (including launders, baffle boards) flanges, sockets and bolts shall be compatible with the fluids, interfacing materials and application of the tank.

Bunds - where integral bunds are required, these shall meet the same design standards and design life as the tank. Design - the tank shall be designed to withstand dead loads, internal pressure, ground pressure load, wind and snow loadings, thermal effects, imposed roof load, loads due to equipment and fixtures. Coatings - any coatings used shall be compatible with the fluids and application for which the tank is designed and meet the design life specified.