opinion commiss februari heysham nuclear power station unit kingdom english text authent euratom gener data plan dispos radioact wast heysham nuclear power station provid unit kingdom govern commiss accord articl euratom treati letter receiv februari meet group expert set pursuant treati place june brussel repres unit kingdom govern provid complementari inform detail basi data obtain consult group expert report append commiss drew opinion distanc power station nearest territori member state kilometr case ireland heysham author limit gaseou liquid effluent normal oper formul estim worst case forecast aris state author limit exce worst case valu valu attain heysham heysham discharg liabl exposur signific health point view member popul member state import recogn discharg irish sea confin heysham site instal includ sellafield reprocess plant discharg sea account calcul dose environment monitor provis commiss note expert opinion maximum envisag discharg limit liquid effluent unnecessarili high recommend limit fix level take account low achiev principl case appreci worst case valu dispos solid radioact wast plan site spent fuel transfer sellafield reprocess temporari storag power station accid condit consid gener data unplan discharg radioact substanc expect give rise member state dose extern radiat inhal signific point view health ground contamin give rise ireland potenti dose requir temporari ban restrict impos consumpt foodstuff origin contamin area conclus commiss opinion implement plan dispos radioact wast heysham nuclear power station liabl normal oper result contamin signific point view health water soil airspac member state mention item commiss recommend liquid effluent discharg limit fix level take account low achiev principl case appreci worst case valu gener data fact instal includ sellafield reprocess plant discharg irish sea account calcul dose environment monitor provis unplan discharg result accid type magnitud consid gener data give rise contamin requir temporari ban restrict foodstuff order ensur exposur popul signific point view health commiss recommend negoti unit kingdom irish govern arrang appli event accid nuclear instal unit kingdom pursu matter urgenc success conclus opinion address unit kingdom brussel februari commiss stanlei clinton davi member commiss