Reloading Facility of FSUE Atomflot.Pdf
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Nuclear Safety Institute of the Russian Academy of Sciences (IBRAE RAN) Annex 9 Source Control Project, Phase III Task 2 Milestone 7 Project Management Plan at Federal State Unitary Enterprise (FSUE) "Atomflot" Risk Assessment at the Coastal Spent Nuclear Fuel (SNF) Reloading Facility of FSUE "Atomflot" Final Report Shickin A.V. Moscow June 2008 Report Summary Annex 9 (Source Control Project, Phase III) covers the activities for the development of the underlying methodology and the conduct of risk assessment for radiation and chemical hazardous facilities of the industrial North of Russia. Annex 9 continues work on the source control project, which was started in 2000 under the framework of Annexes 1 and 4. Two major facilities of the North of Russia were chosen for the current project: FSUE "EE "Zvezdochka" (Severodvinsk, Archangelsk Region) and FSUE "Atomflot" (Murmansk). Initial tasks included the organization and conduct of the first visit to the site; the selection of a facility to apply the risk assessment; and the preparation and conduct of training courses on the methodical foundations of risk assessment. This training was targeted to the personnel of facilities performing theses types of activities in the North-West Region of Russia. The Project Management Plan (PMP) for FSUE "EE "Zvezdochka" was approved on November 9, 2005. The PMP for FSUE "Atomflot" was approved on May 29, 2006. The goal of Stage 7 of PMP for FSUE "Atomflot" is to prepare the final report on the risk assessment, which should include recommendations on the possible application of the ISO 14001 standard and the developed risk assessment methodology document. This report is presented in accordance with the report documents of Stage 7 of the PMP for FSUE "Atomflot". Input information The work followed the Risk Assessment Methodology developed in the earlier Phases (I and II) of the Source Control Project (2000-2004). The first stage of the project was conducted at a sewage facility of the town of Apatity in the Murmansk Region of the Russian Federation. A draft of the Risk Methodology Document for the chemically-hazardous industrial facilities was developed as a result of the project. The second stage of the project was conducted at the fuel research department of the FSUE "SSC RF Nuclear Reactor Institute" in Dimitrovgrad in the Ulyanovsk Region. During the execution of this project, the risk assessment methodology was adapted to the radiation- hazardous facilities. The works conducted in the current stage are a part of the work described in the Risk Assessment Methodology Document. page 2 of 35 Scope of Work Nuclear- and radiation-hazardous works carried out at FSUE "Atomflot" are mainly connected with refueling ship nuclear reactors and the management of the removed SNF. The current project studies the reloading operations in detail. In addition, this project focuses upon the following main tasks: - Development of recommendations on introducing the ISO 14001 Environment Management System (EMS) standard at the facility and the use of the risk assessment methodology; - Preparation of this final report. Scope of Work Details This section gives a brief description of the studied facility, the work performed, and the recommendations received in the process of project implementation. More detailed information may be found in the reports on Stages 2-5, prepared according to the PMP for FSUE "Atomflot". 1. Brief Description of FSUE "Atomflot" FSUE "Atomflot" is located on the bank of the Kola Gulf, two kilometers from the northern boundary of the city of Murmansk, and has a total site area of 17 hectares. The facility performs repair and maintenance of the nuclear propulsion units of nuclear icebreakers and is controlled by the Federal Agency for Sea and River Transport of Russia. The icebreaker fleet is managed by JSC "Murmansk Shipping Company" (MSC), and "Atomflot" performs the maintenance of the ships. As documented by the official press-release of the Rosatom press office, an agreement on the transfer of the nuclear icebreaker fleet to Rosatom was reached in February of 2008. It is expected that when the contract of MSC on asset management of the icebreaker fleet expires in 2008, FSUE "Atomflot" will be also transferred to the state corporation of Rosatom in the framework of the nuclear industry reform. FSUE "Atomflot" was established and developed as a facility fitted to carry out the repair and maintenance of nuclear-powered ships and nuclear maintenance vessels. The facility became operational in 1960. At that time it was performing maintenance of the first nuclear icebreaker "Lenin". The seventies marked extensive building activities and an increase in the facility capacity. As soon as the decision was made to expand the nuclear icebreaker fleet of USSR with new ships, the facility was expanded, and additional space and capacity were added. page 3 of 35 The first series of improvements became operational in 1981. They included a repair and technical building, technological mooring lines, a Solid Radioactive Waste (SRW) storage facility, and needed auxiliary systems. The productive capacity and engineering infrastructure were further developed in the following years to include new technological mooring lines, a special water treatment facility, an administrative building, and other auxiliary facilities. A coastal facility for long-term dry container storage of SNF was completed and commissioned in 2005. This Russian-British project was performed in the framework of the global partnership in the field of nuclear safety. Since then, no containers with SNF have been Fig.1 Nuclear icebreakers and nuclear loaded into the facility due to some problems maintenance vessels at FSUE "Atomflot" concerning contractual issues with the SNF user - JSC MSC. FSUE "Atomflot" is the permanent base of nuclear icebreakers and Nuclear Maintenance Vessels (NMV). The enterprise executes the following functions: - maintenance and repair of general and special ship equipment; - recharging nuclear reactors; - preparing SNF to transportation by railroad transport; - acceptance and loading fresh nuclear fuel to FMB "Imandra"; - acceptance, processing and temporary storage of liquid and solid radioactive waste (RW). The facility has 9 mooring lines with a total length of over 1 km and a floating pier. The depth at the mooring lines is 11.6 meters. The loading operations at the facility are carried out with the use of three portal cranes located at the mooring line, including a 100 ton KONE crane built in Finland, which is used for all SNF container reloading operations. The facility has all the infrastructure required for the treatment of liquid and solid RW: - SRW container storage facility with an internal volume of 400 m3 with a section for burning flammable waste; page 4 of 35 - high-level SRW storage pad with 216 cells (containers holding spent ion-exchange materials of the primary circuit and emergency protection rods); - highly radioactive equipment storage pad with 12 cells (steam generators, primary circuit pumps – 12 cells); - retractable core parts storage pad designed for special containers (3 containers); - storage facility for acceptance and temporary storage of liquid RW (LRW), equipped with a LRW treatment installation and two vessels with a volume of 100 m3 each; as well as services, systems, and equipment for the monitoring and accounting of personnel exposure doses, and radiation monitoring at the site and in the vicinity of the facility (nuclear and radiation safety department, central laboratory, environment protection laboratory) In 2000-2005 an automated radiation monitoring system of FSUE "Atomflot" was developed in the framework of the AMEC international project in cooperation with the Norwegian Institute of Energy Technology. The system includes gamma-radiation sensors, a radioactive aerosols monitoring station, a water radioactivity monitoring system, and an automatic weather station. Data of the dose rate from two sensors at the boundary of this site are automatically transmitted to the Murmansk territorial Automated Radiation Monitoring System (ARMS) All works connected with SNF reloading are carried out at the coastal unloading facility, which is examined in the current project. 2. Technological procedure of SNF reloading The procedure for managing SNF unloaded from the reactors of civil nuclear ships using the new equipment of FMB "Lotta" and TUK-18 (TUK-108/1) transport containers was introduced at FSUE "Atomflot" beginning in 1995. (See also Attachment 2) Upon unloading of the reactor core from the nuclear icebreaker, the SNF is stored for at least 6 months at the FMB "Imandra". Then the fuel is reloaded to the storage holds of FMB "Lotta" for further storage. The total storage time for SNF from the time of its unloading to transportation of the fuel to the Production Association (PA) "Mayak" is at least three years. The current study examines the technological operations required for reloading of the fuel between the floating maintenance bases and loading of TUK-18 (TUK-108/1) from FMB "Lotta" to the special train. Technological procedures for unloading SNF are determined by the corresponding regulations, which define the organizational measures to ensure nuclear and radiation safety, the sequence of technological operations, requirements for staffing and equipment, as well as the duties and the responsibilities of the personnel. page 5 of 35 The following organizational and technical measures are taken to increase the safety of all operations: