Framework agreement for service and replacement of process analysis instruments.

There is a need for a framwork agreement for service, spare parts and replacement of online meters at Bekkelaget sweage treatment plant (Bekkelaget RA). The economic limit for the existing framework agreement will soon be exhausted and must therefore be replaced with a new framework agreement. Bekkelaget RA is Norway ́s second largest sewage treatment plant with a dim.capacity of 540,000pe. In order to monitor how the purification process works, online meters are installed. Online meters and controllers of the brand Hach Lange are installed that measure Suspended matter (SS), pH, Nitrate, ortho-phosphate, dry matter (TS), oxygen (O2) and ammonium NH4. VAV needs annual services for the instruments. In addition there will be a need to replace wearing parts and some instruments. Equipment for use when replacing/servicing must be compatible with the existing measuring instruments and controllers in order to ensure functional ability for the measuring instruments.