▁nom inal ▁output , ▁allowing ▁the ▁continuous ▁operation ▁and ▁plut on ium ▁extra ction ▁compared ▁to ▁most ▁press ur ized ▁water ▁react ors ▁like ▁the ▁V VER ▁which ▁need ▁to ▁be ▁shut ▁down ▁to ▁exchange ▁fuel ▁rod ▁assemb lies .) ▁ ▁Vers ions ▁ ▁V VER - 4 4 0 ▁One ▁of ▁the ▁earliest ▁versions ▁of ▁the ▁V VER - type , ▁that ▁manif ested ▁certain ▁problems ▁with ▁its ▁Cont ain ment ▁building - design . ▁As ▁it ▁was ▁at ▁the ▁beginning ▁with ▁the ▁models ▁V - 2 3 0 ▁and ▁older ▁not ▁constructed ▁to ▁resist ▁the ▁design ▁basis ▁large ▁pipe ▁break , ▁the ▁manufact urer ▁added ▁with ▁the ▁model ▁V - 2 1 3 ▁a ▁so ▁called ▁B ubble ▁cond enser ▁tower , ▁that ▁- ▁with ▁its ▁additional ▁volume ▁and ▁a ▁number ▁of ▁water ▁layers ▁- ▁has ▁the ▁aim ▁to ▁suppress ▁the ▁forces ▁of ▁the ▁rapidly ▁esc aping ▁steam ▁without ▁the ▁on set ▁of ▁a ▁contain ment - le ak . ▁As ▁a ▁consequence , ▁all ▁member - count ries ▁with ▁plants ▁of ▁design ▁V VER - 4 4 0 ▁V - 2 3 0 ▁and ▁older ▁were ▁forced ▁by ▁the ▁polit icians ▁of ▁the ▁European ▁Union ▁to ▁shut ▁them ▁down ▁perman ently . ▁Boh un ice ▁N uc lear ▁Power ▁Plant ▁and ▁K oz l od uy ▁N uc lear ▁Power ▁Plant ▁had ▁to ▁close ▁with ▁this ▁two ▁respectively ▁four ▁of ▁their ▁units . ▁Where as ▁in ▁the ▁case ▁of ▁the ▁Gre if sw ald ▁N uc lear ▁Power ▁Plant ,