Objective

The main objective of the project was the transfer of Western Probabilistic Safety Analysis (PSA) and External Events methodology and experience to the Russian Beneficiary. It concerned the level I of PSA. It enabled the Russian specialists to identify weak areas where improvements are needed, to assign priorities in a modification schedule and to verify the validity of the proposed modifications.

Result

Summary:

• Setting up Procedures and Guidelines for Development of a PSA-Level 1;
• Providing necessary Software and Hardware (see below) Assistance in Review of Reliability Data most appropriate to be used in the VVER 440/V 230 Plant PSA;
• Assist Russian Specialists and work together with them on Novovoronezh Unit 3 PSA;
• Assistance in performing analysis of external events (natural and man-made events, internal fires, flooding, missiles, pipe whip) for the same plant.

Supply of tools:

• 3 HP Vectra VL2 4/50 Model 210 80486 DX2-50 MHz, 4MB RAM, 210 MB IDE-Hard disk, 3,5” FDD, Incl. DOS 6.2, Windows 3.1;
• 3 HP Vectra VL2 4/50 Model 340 80486 DX 2-50 MHz, 8MB RAM, 340 MB Hard disk, 3,5” FDD, MS-DOS 6.2, Windows 3.1;
• 6 Monitors;
• 1 HP Laserjet IV plus printer;
• 1 CANON NP 1215 photocopier;
• License RISK Spectrum (5 copies);
• Support of the above mentioned RISK Spectrum Licenses;
• License of COMPBRNEA.

External event analysis:

• Fire analysis;
• Flooding analysis;
• Missile impact analysis;
• Pipe whip analysis;
• Natural and Man-Made Events Analysis;
• Interim/Final Report for the above analysis.

Internal event analysis:

• Identification of initiating events and success criteria;
• Collection of Reliability Data;
• Accident Sequence Development;
• System Analysis- Dependency Analysis;
• Human Reliability Analysis;
• Event Tree Quantification;
• Importance, sensitivity and uncertainty analysis;
• Interim/Final Probabilistic Safety Analysis Report.