Analysis of floor response spectra in reactor （楼层反应谱分析在反应堆）.pdf

Analysis of floor response spectra in reactor building of NPP with vver-1500 at air shock wave impact Dr. V.Korotkov, Mr. D.Poprygin, Mr. K.Ilin, Dr. S.Ryzhov Atomenergoproekt, TESIS (Moscow, Russia) Abstract: Nowadays «Atomenergoproekt» institute conducts work for creation of basic design of NPP with VVER-1500. Within this design it is necessary to develop equipment for NPPs that meets requirements of trouble-free operation at special dynamic impacts: seismic activity, air shock wave and aircraft crash. In order to solve such a problem one should know about relevant response spectra. The purpose of this report is to define floor response spectra in reactor building of unitized design with VVER-1500 in equipment installation spots at ASW impact. In the presented report we have applied the licensed fin ite-element software ABAQUS, version 6.4.4 for determination of dynamic reaction in reactor building. In this case in accordance with EUR (EUR – European Utility Requirements) a variability of soil properties, characterizing various dynamic properties of soil depending on site location has been estimated. There has been given a justification of a choice of damping in the sy stem. There has been presented a methodical description of estimation of interaction of a structure and foundation when solving a dynamic problem. There has been also presented a description of RB spatial mathematical model and conditions of loading, which were performed in accordance with American standard ASCE. Keywords: NPP – Nuclear Power Plant, VVER=WWER – Water-Water Energetically Reactor, ASW – Air Shock Wave, RB – Reactor Building, EUR – European Utility Requirements, ASCE – American Society of Civil Engineers, ALA – Accident Localization Area, ECCS – Emergency Core Cooling System, RCP – Reactor Coolant Pump, Prz – Pressarizer, HA – Hydro Accumulator, PHRS – Passive