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SPC Doza produced a large batch of sampling probes for Rooppur NPP


06.04.2022

Within the framework of General Contract between Bangladesh Atomic Energy Commission and JSC Atomstroyexport, SPC Doza has manufactured 206 sampling probes for Power Unit No. 1 and Power Unit No. 2 of Rooppur NPP of the People's Republic of Bangladesh.

Sampling probes are applied as elements of the sampling lines of radiation monitoring systems at nuclear power and industrial facilities related to manufacture, processing, use and storage of radioactive materials. The probes are intended to organize the sampling of radioactive gas-aerosol media from air ducts and ventilation ducts. They are an important element of sample preparation; quality and reliability of sample intake, maintenance frequency, operability of sample preparation in whole depend on their work.

The sampling probes of SPC Doza production are resistant to effects of temperature of monitored air medium in range from +5 to 180 C, resistant to relative humidity of ambient air in range from 98% at +35 C and low temperatures, resistant to effects of atmospheric pressure in range from 84.0 to 106.7 kPa. These probes and all design, working and operational documentation supplied with equipment are made in English.

A peculiarity of project implementation was the fact that due to high humidity of the terrain of People's Republic of Bangladesh, additional tests on effects of fungi and mould on the equipment and wooden containers were performed.

The equipment has successfully passed acceptance-delivery tests and acceptance inspection according to quality plans. The commission members were representatives of Customer, General Contractor, General Designer, Foreign Customer and two authorized organizations Zarubezhatomenergostroy and Gosatomnadzor of Russia.

These sampling probes have demonstrated that they are reliable, easy to install and operate, as well as have high operability as part of sampling lines of radiation monitoring systems at nuclear power facilities.