Design and Engineering Service for Power Plants and Plant Facilities
VIV provides total engineering service(design, manufacture, installation, operation, and evaluation) based on field oriented nuclear plant technology with powder plants and plant facilities.
Evaluation of Valve Internal Leakage and Providing the Maintenance GuidanceThe internal leakage from closed valve causes damage to equipments and degrades thermal efficiency in high temperature and high differential pressure conditions during normal operation. The internal leakage is detected precisely using patented unique technology and the maintenance guidance is provided.
Evaluation of Spent Fuel Pool Cooling CapacityWhen fuel assemblies are taken out from reactor and moved into the spent fuel pool earlier to shorten the overhaul period, it is expected that spent fuel pool cooling capacity is not sufficient to remove decay heat from spent fuel assemblies. In order to solve the problem, the optimized design change and operating scheme are proposed.
Shin Kori Unit 4 Reactor Vessel Internal Comprehensive Vibration Assessment Program (RVI CVAP)The analysis for coolant flow and internal vibration inside reactor, and structure are performed to determine the natural frequency and vibration mode, deformation rate and strain in RVI CVAP with correct measurement parameters and location within allowable test limits.
ECCS Passive Strainer Design DevelopmentThe ECCS passive strainer design is developed for filtering the debris generated due to impingement impact in case of Loss of Coolant Accident(LOCA) so that the safety injection pump has sufficient NPSH to circulate cooling water into core continuously under any worst circumstance. This newly developed ECCS passive strainer unit is to be installed in OPR 1000.
Performance Evaluation and Design Improvement of Yonggwang Unit 1&2 Mainsteam Condensate Drain ValveRepeated internal leakage in mainsteam condensate drain valve causes damage to trim and degrades thermal efficiency. Performance evaluation is performed to determine the necessity of replacement or improvement for 46 unreliable drainage valves. Repeated internal leakage in mainsteam condensate drain valve causes.
Design Evaluation and Elimination of Post Accident Sampling System (PASS)The elimination of PASS due to the reduced usefulness of post accident sampling decreases operational burden such as radiation exposure, periodic surveillance, and maintenance. Instead it increases the operability and economy in the pressurized water reactor type power plant.
Verification of Equipment Qualification of Nuclear Power PlantIt is verified that safety related equipment are qualified to function properly in severe environmental conditions during and after design basis accident in accordance with Periodic Safety Review(PSR) and applicable licensing regulatory requirements.