Kola NPP Liquid Radwaste Treatment - Cementation Facility
Kola NPP Liquid Radwaste Treatment - Cementation Facility
Description
Background
Kola NPP consists of four VVER-440 power units and comprises two special buildings where liquid radioactive waste (LRW) storage vessels are located. These two special buildings were constructed during the 1st construction stage (Units 1 and 2) and 2nd construction stage (Units 3 and 4) respectively. Accumulated LRW is temporarily stored in stainless steel tanks. It has to be processed in such a way as to allow for safe long-term storage, transportation and final disposal of such waste.
It has been decided to renovate the Liquid Radioactive Waste Treatment Unit (LRWTU) at Kola NPP in order to create a complex of process systems, installations and equipment for handling and treatment of waste which has been accumulated up to the present time and in future. This will be done by means of solidification to reduce the initial amount of waste and conditioning for controlled safe storage and further final disposal.
The complete LRWTU includes the following sub-systems, units and equipment (see the block diagram of the complete LRWTU in the attached diagram):
¨ А1 – dissolution and extraction of salts (R1.01/94G);
¨ А2 – concentrating (R1.01/96C);
¨ А3 – cementation of waste ion-exchange resins and sludge (R1.01/04A Lot 3);
¨ А4 – extraction of liquid radioactive waste from storage tanks (R1.01/94G);
¨ А5 – removal of radionuclides from evaporator concentrate solutions (R1.01/04A Lot 5/1 and R1.01/04A Lot 5/2);
¨ Transport/process equipment for handling the solidified waste (R1.01/04A Lot 1);
¨ Radiation control (monitoring) equipment (R1.01/04A Lot 2);
¨ Auxiliary systems and units;
¨ Solidified waste storage facility.
Several of the above systems and components of the LRWTU have been provided through the Tacis programme, as indicated in the above list (see projects R1.01/94G, R1.01/96C, R1.01/04A Lots1-5). Project R1.01/04A Lot 4 comprised the supply of valves for installation at the connections between the different process systems. A feasibility study was also performed in the framework of project R1.6/91.
Objectives
Project R1.01/04A, programmed in the TACIS Annual Action Programme of 2004, was the so-called 'large-scale' equipment supply project for Kola NPP. It was divided into several lots in order to purchase the remaining equipment needed for the construction of the LRWTU.
The present contract was for Lot 3. Under this contract, the Cementation System, comprising item A3 of the above list, was delivered.
The cementation system ensures the processing of the pulp of ion exchange resins, sorbents and drain water sludge stored in the LRW storage tanks, and also the system A5 filtration concentrate, which are to be immobilised in cement compound.
The LRW cementation system is designed to produce cement compounds comprising of sorbents, sludge, filtering concentrate and additives required to improve the properties of compounds.
The liquid radioactive waste cementation system includes the following functional groups:
¨ Cement reception and supply group including bunkers receiving cement from cement trucks and devices supplying cement to the cement measuring tank (feeders);
¨ Spent adsorbent pulp (ion exchange resins) reception and supply group ensuring removal of hydrotransport water to attain the required proportion between solid and liquid phases as well as supply of pulp into waste measurer (measuring tank), the group comprises of a resin tank and a resin transfer pump;
¨ Group of reception and supply of drain water sludge and filtering concentrate; the Group consists of a tank and a pump;
¨ Cement and additives dosing group comprising of additives storage tanks, cement measurer, cement dosing device and cement and additive transportation device;
¨ Liquid radioactive waste dosing group (filtering concentrate, sludge, adsorbents), consisting of a waste measuring tank;
¨ Cement compound mixing and supply group to 1.5 m3 container; the group consists of a mixer, a dust filter, a container butt-joining unit, a device preventing the contamination of the container outer surface, a flush water supply pump and a flush water removal pump;
¨ Cement compound sampling device for monitoring the saturation grade of the cement compound before plugging the filled-up container and hardening of the cement compound in the container;
¨ Pipeline and pipeline valves;
¨ Electrical equipment, I&C hardware.
Scope of supply
The scope of the Supply comprises one set composed of the following equipment:
¨ Cement reception and supply equipment.
¨ Spent adsorbent pulp (ion exchange resins) reception and supply.
¨ Drain water sludge and filtering concentrate reception and supply.
¨ Dosing cement and additives.
¨ Liquid radioactive waste dosing equipment.
¨ Cement compound mixing and supply equipment
¨ Cement compound sampling equipment.
¨ Pipelines
¨ Valves (isolation, control and safety valves inclusive).
¨ Electric equipment and I&C systems.
¨ Software required for the operation of the system.
The scope of supply includes the complete design, manufacture, supply and supervision for installation and commissioning of the components and systems. It also includes the provision of documentation, acceptance testing, certification, assistance to the End User in licensing and the required training of KNPP personnel.
Results
The specified equipment was delivered, installed and commissioned and all services, including training of End User personnel, were satisfactorily performed. The Provisional Acceptance Certificate (PAC) was signed in November 2010. The warranty period was completed in accordance with the contract and the Final Acceptance Certificate (FAC) was signed in May 2012.
See attached brochure in English and Russian languages.
General Information
Title:
Kola NPP Liquid Radwaste Treatment - Cementation Facility
Programme:
TACIS
Amount:
€ 2.884.252,00
Budget year:
2004
Countries:
Russia
Nature:
Supply
Types of activities:
On Site Assistance
NPP:
Kola
Duration (months):
46
Contracting authority:
Rosenergoatom
Partner (Beneficiary):
Rosenergoatom
Contractors:
Areva
Status:
Closed
CRIS number:
128568
Project reference:
R1.01/04A Lot 3
Decision number:
TACIS/2004/017-031
Method of procurement:
Open Call for Tender
Signature date:
07/12/2006
Effective contract date:
08/12/2006
Contract end date:
08/10/2010
Closure date:
30/07/2012
