ARCHIVESHISTORIQUES
DELACOMMISSION
COLLECTION RELIEEDES
DOCUMENTS "COM"
COM(75)523
Vol.1975/0198

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.COMMISSION OFTHEEUROPEANCOMMUNITIES
COM(75)523final.
Brussels.23October1975
ProposalforaCouncildecisionadopting
aresearchandtrainingprogrammeforthe
EuropeanAtomicEnergyCommunityinrespect
ofthesafetyofnuclearinstallations
(submittedtotheCouncilbytheCommission)
CGM(75)523final

-1- 677/111/75-E
Proposal for aprogramme ,
*concerning thesafety ofnuclear installations
.Years 1976-80
1.INTE0DUCTI0N .
All theCommunity activities concerning thetechnological safety of
nuclear installations were dealt with inacommunication andareport
addressed totheCouncil on3March 1975° On22July 197.5
theCouncil adopted aresolution (appended asAnnex III )which ,inpar­
ticular ,stresses theneed topromote greater Community consistency in
the fields of :
/ • i*
(a)gradual harmonization ofsafety requirements andcriteria ;
(b):coordination ofapplied research . , ,
Theaims ,ways andmeans ,state ofprogress andthefinal objectives
ofthe various studies were described inthe above mentioned communi­
cation andreport .Itwill suffice tonote here that these studies are
being carried outbyspecialist standing working' parties and ,where
appropriate ,study-groups .These working parties draw upon specialists
from thevarious fields concerned (associated approval and/orsafety
andsupervisory bodies ,bodies responsible forthe •management ofre­
search programme ^andresearch centres ,operators anddesigners )and
meet forone ortwodays twice orfour times ayear .The efficiejicy of
the .meetings depends mainly onthequality andquantity ofthesupport
which canbegiven totheworking parties.' This breaks down into :
(i)support from synthesis andanalysis studies (e.g. ,under study
contracts with which "experts qualified inonefield oranother
areassociated ); ' - ' ■
Gi)increased scientific andtechnical secretariat support .
Theneed toreinforce thescientific and technical' secretariat stems ,
inparticular ,from thevery wide range oftechnical subjects and
scientific disciplines tobedealt with ,from thenecessity toobserve
theshortest possible deadlines ,especially asregards certain acti-
./...

-2- 677/111/75-E
vities (e.g. ,cooperation andconsultation inthematter ofsafety
requirements andcriteria )and ,lastly ,from the fact that most ofthe
national experts nowhave tocope with :anextra work .-load owing tothe
expansion ofnuclear programmes intheMember States .The aimofthis
proposal istodetermine themultiannual requirements arising from
this reinforcement ofthe scientific and technical secretariat .
2.THEFIELDS COVERED ANDTHEWORKING PARTIES MAINLY CONCERNED ' '
2.1 .Unlike thecommunication ofMarch 1975 *which referred tosa­
fety problems relating tot^ievarious types ofnuclear instal­
lation andalltheassociated operations (fuelcycle ),this
proposal centres inparticular onlight-water i-eact'ors (LWR ).'
However ,inthenear future ,itwill also bepossible toin-'
:elude "certain problems connected -with pressure *-tube re-actors •
(PTR )inthestudies ;theproposal covers both thegradual'
harmonization ofsafety requirements andcriteria andbetter
coordination ofresearch .
'•"J ' ' ' ' '
2.2 .Harmonization ofsafety requirements andcriteri a '
>.These studies are -being ;carried outmainly within theframe­
..work :of .tlje "LWRsafety methodology ,,criteria andstandards "
vWorking Party * . -,
According toanorder ofpriority which ithassetitself ,
theWorking Party isatpresent listing themethods andcri*
teria applied intheVarious countries and indicating' points
ofconvergence anddivergence inthefollowing fields :
•-themethods and -criteria applied in .theanalysis ofacer «-
tain number ofpotential accidents originating outside or
inside the installations ;
-general criteria forthedesign ofpower stations .

-3- . . 677/HI/75-E
Subsequently ttheWorking Party 1sactivities should' bedirected
at -the ;following -inparticular
-the connections between the two above mentioned fields and
siting criteria andpractice fornewinstallations asregards
work undertaken inanother group ofgovernment experts with
theobjective toexchange informations about therequirements
ofenvironmental protection taken into consideration within
the Member States ;
-detailed criteria forthedesign ofparticular structures ,
systems orcomponents ;
-criteria for themanufacture ,assembly and in-service sur^
veillance both ofcomplete installations and ofparticular
'structures |systems orcomponents ; -
*•comparative analysis ofvarious safety philosophies (e.g. ,
deterministic j,semi-empirical ,probabilistic );
-consultations atCommunity level ondraft laws ,,regulations
orprovisions of ■equivalent scope f
-thedrafting asearly aspossible ofrecommendations ,within
.,themeaning ofArticle 124 ,second indent oftheEAEC Treaty ,
.onsubjects which lend themselves tosuch formulation .
Coord inatio.nofres.earch " •
Working Party on-LWR safety research
>
The first task ofthis Working Party was -todevelop asystem of
information concerning research programmes and theresults of
this research .Two fields ofresearch' deserve apriority effort
, κ .asregards both thepooling ofknowhow andCommunity-scale coo-
peratibri .-
a)problems connected withaccident sinvolving theloss ofpri-
"mary;;coolant and'emergency cooling ofthereactor 1core
(LOCA andEaCS ):' .
b)mechanical andmaterials probl emsrelated tosafety aspects
ofsteel components innuclear power stations .
/

-^- 677'Il1/75-E
Regarding thefirst ofthese fields (LOCA/ECCS ),thespecific
questions which iiaccdrding to'Hive aboVe mentioned Working Par­
ty,probably merit investigation -aridbetter cooperation and
.coordination atCommunity level are :.
.»therates atwhich thewater /steam mixture' flows through the
.breaks andthedrag effects ofthepipes andtubes depending
ontheir geometrical dimensions ;
«flows through thecore ,particularly inthereflooding stage ,
-- including ,thestudy oftheeffects ofxef-wetting ,.threg-di -
mensional andoscillatory effects andsteam /water interac -
.tions ;
■' ·ν- :■ '> .'" ·/ν
-thecharacteristics ofheat transfer during theaccident ,
including thestudy ofeffects such asfuel element' defor -
;Y-mation arid ,failure } r
-verification andimprovement ofcomputer fcodesi backed upby
experiments .,chiefly during theemergency cooling stage for
core geometries andpower densities similar -t£ithose in
reactors now under construction . ......
Itshould be .noted that allthese questions focus inparticu­
larontheemergency cooling stage (ECCS )intheevolution of
thepostulated accident .Considerable effort hasalready
been directed ,atCommunity andnational level ,totheblow­
down stage (e.g. ,using thespecial loop *attheJBCrtspra ).
There istherefore' ,no'risk ofduplication .
Regard ingthe "second ofthes efiel ds(mechani6al -andmaterials
problems )«itisadvisable todraw attention first ofall to
theexistence ofastanding working party setupas,early as
'.1970' under thejoint -auspices pfthe^CEC jartd the.NEA (tJSNI ),
Vtowhich ;experts -of*theUnited States ,Canada *^Japan ,.Sweden *
Spain andAustria aswell asexperts 6f7the -aine .EC .Member
States belong . v -'.. ... ,..

5 677/111/75-E
Since 197^,this Working Party considered that during the
coming years itisnecessary toinvestigate more selectively
certain questions ,relating topressure vessels andprimary
circuits .Study-groups were setupforthia purpose .The
problems dealt with inthese study~groups arerespectively :
1)fracture mechanics :useofelastoplastic theories ,appli­
cability andlimits offracture mechanics ,probabilistic
tgthods infracture mechanics .
2)Welding andheat treatment .
3)Non-destructive tests including in-service monitoring ,
e.g. ,ultrasonics ,noise ,holographic methods andperio­
dical tests atoverpressure .
Inparticular ,theaimwould betoensure thecontinuation
ofthecooperation begun in197^ontheultrasonic study
ofsamples tested first ofallintheUnited States (compa­
risons ofresults ).
^■)Thebehaviour of .structures employed increep range condi­
tions ;this heading mainly covers mechanical problems
which arise infast sodium-cooled reactors andhigh-tempe -
rature reactors inparticular.'
Aswell astheproblems referred toabove ,which are dealt
with byspecialist sub-groups ,thefollowing problems are
also considered bytheWorking Party inquestion tobeof
prime importance and tobeworthy ofincreased efforts in
'terms t>fCommunity ,cooperation i„
■rj ... # ««,• . . ,
-••thetheortetical -andexperimental ^examination ofprooleras
relating tostress andsafety margin distribution in .equip­
ment with complex geometry (e.g. ,penetrations through
reactor pressure vessels )

-6- 677/IH/75-E
-thetheoretical andexperimental examination ofproblems
delating tomissile impact resulting from internal orexter­
nalaccidents (e.g. ,'definition ofthemass andspeed of
anypotential missiles ,anti-missile design attheplan­
ning stage ,ability topenetrate targets which arenot
flat ,penetration dapacity ofmissiles which arenotcir­
cular ,loss ofresistance oftarget structures below the
penetrability threshold ).
3.SUPPORT REQUIRED
Thesupport oftheSecretariat will mainly have tobegeared to
making b3t?t usepossible ofthe data collected ,examined ,and dis­
cussed during andafter themeetings ofnational :experts (Working
Parties )endtopreparing andmanaging thesupport studies .
Thfetype support required maybedefined asfollows :'
-compilation andpreparation of ,data concerning themethods ,requi­
rements andcriteria laid down intheMember States ,-,which result
from thenational research programmes inaform inline with the
aims 6ftheWorking Parties (e«g.y intheform Ofquestionnaires
andreplies ,analysis ofreplies ,etc.) ;
–assessment ofthevast amount ofliterature ,available ,inorder
toprepare ,inconjunction with thenational experts ,condensed
studies onspecific problems i
–preparation ,.inconjunction with thenational experts ,ofcritical
studies ofthe state ofthe art
-effective management ofcooperation concerning safety requirements
andcriteria and ofthe 6G=urrcu /*/&;£»le*el consultations provided
forwith regard tolaws ,regulations orprovisions ofequivalent
scope '

-7- °77/ΙΙ1/75"Ε
•»drawmg-up ,asearly aspossible *ofdraft recommendations ,within
themeaning ofArticle 12k2ndindent ,oftheEAEC Treaty ,relating
tosafety requirements and criteria .
k.PROPOSAL FOR APROGRAMME
For thereasons andconsiderations outlined above ,reinforcement of
thetechnical secretariat isconsidered essential inorder effectively
tocarry out theactivities atasufficiently constant pace .
Theactivities inquestion areclosely linked with thegrowth and
technical development oftheproduction ofnuclear energy and they
must therefore bespread over several years .For this reason ,apart
from any subsequent extension ,theoperation planned extends over a
period offive years (1976-80 ).
Theprogramme proposed comprises solely staff expenditure for five' ,
scientific /technical staff members (3A's,IBand 1C)andthecor­
responding administrative expenditure .
The resources tobeearmarked are :
6taff complement 5
staff expenditure 1.120.000 u.a .
administrative expenditure 410.000 u.a .
TheCommission shall undertake tofind the five officials necessary
totheexecution ofthis programme inrespecting theexisting staff
roster ;the Commission shall therefore not ask for the creation of
supplementary posts .

677/111/75-E
Proposal for aCouncil decision
adopting aresearch and training programme
for theEuropean Atomic Energy Community
inrespect ofthe safety ofnuclear installations
(Nuclear project carried outatHeadquarters )
THE COUNCIL OFTHEEUROPEAN COMMUNITIES ,
Having regard totheTreaty establishing theEuropean Atomic Community ,
and inparticular Article 7thereof ;
Having regard totheproposal from theCommission submitted after
consultation with the Scientific and Technical Committee ;
-Whereas ,under theactual state ofdevelopment ofnuclear energy ,it
isimportant toundertake aneffective action atCommunity level con­
cerning the safety ofnuclear plants ;
-Whereas theCouncil byitsresolution of22July 1975 onthetechnolo­
gical problems ofnuclear safety agreed totheprinciples ofsuch an
action ;
-Whereas aresearch programme atCommunity level inthis matter consti­
tutes ,atafirst stage ,anappropriate means toimplement thequoted
resolution .
HAS DECIDED ASFOLLOWS :
Article 1
Aresearch and training programme concerning the safety ofnuclear
installations andmainly based onlight-water reactors ,asset out in
Annexes Iand II,ishereby adopted for aperiod offive years from 1
January 1976 .TheAnnexes form anintegral part ofthis Decision .
Article 2
Themaximum commitments inrespect ofexpenditure andstaff tocarry out
this programme shall berespectively 1.53 million units ofaccount and
five staff-members ,theunit ofaccount being defined inArticle 10of
theFinancial Regulation of25April 1973 applying totheGeneral Budget
oftheEuropean Communities .
Done atBrussels ,
For theCouncil ,
The President

677/111/75-E
ANNEX I
NUCLEAR PROJECT CARRI EDOUTAT'HEADQ UARTERS
- :Scientific :andtechnical .support
»foractivities pursued in,connection with
the safety ofnuclear ,ii^stallations .
, .aiylmainly centered onproblems relating
tolight-water reactor families
Amaximum amount of1,530 million units ofaccount isallocated to
this programme ,thestaff complement ofwhich isset atfive Commu­
nity servants .
Theprogramme is'aimed attheprovision -ofthefollowing type of
support :•
■* *
-compilation andpreparation ofdata concerning themethods ,requi –,
rements andcriteria laid down intheMember States ,""which"' result "V­• •––-–– T -– 7
from thenational research programmes inaform inline with the „
aims ofthe'Working Parties (e.g. ,intheform "Ofquestionnaire ^'
andreplies janalysis ofreplies ,etc.) ; :
-assessment ofthevast amount ofliterature available ,inorder to
prepare ,inconjunction with thenational experts ,condensed stu­
dies onspecific problems ;
–preparation ,inconjunction with thenational experts ,ofcritical
studies ofthe state ofthe art ;
effective management ofcooperation concerning safety requirements
andcriteria and oftheCommunity-level consultations provided for
with regard tolaws ,regulations orprovisions ofequivalent scope
-drawing-up ,asearly aspossible ,ofdraft recommendations ,within
themeaning ofArticle 12k2ndindent koftheEAEC Treaty ,relating
tosafety requirements and criteria .

-2- 677/111 .'75-E
>."* •'Ti v'»; •:>
Theprogramme will thus provide' tfienecessary support foractivities
intended toensure anequivalent andsatisfactory lervel ofprotection
forthegeneral public andtheenvironment 1against radiation hazards
resulting from nuclear >aetivdties ,\tolower theharriers totrade and
toachieve greater consistency andeconomies inthefield ofapplied
research ,inaccordance with theaims expressed intheResolution on
thetechnological "problems involved -innuclear ,safety adopted bythe
Council on 1 i'• 4,v . •
ANNEX II
TABLE SHOWING MAXIMUM EXPENDITURE AND STAFF COMPLEMENT
ProgrammeCommitments
(inmillions ofu.a ..)Staff
complément
Safety .ofnuclear installa­
tions (industrially develo­
ped reactors ,and inparti­
cular light-water reactors )1,530
τ ■ \ \ .* ,
.·'Λ
* ■

677/111/75-E
ANNEX III
' ;RESOLU TION
THECOUNCIL OFTHEEUROPEAN COMMUNITIES ,-v•'■' " ■ ■
Having regard totheTreaty establishing theEuropean Atomic Energy
Community ;
Having regard totheOpinion oftheEuropean Parliament ("*");
2Having regard totheOpinion oftheEconomic andSocial Committee ();
Whereas the Commission has forwarded to .the Council acommunication
andageneral report ontechnological problems ofnuclear -safety ;
Whereas itisnecessary tokeep thepublic adequately informed on
thils subject;' *v' > ;
Whereas nuclear power has aconsiderable part toplay insupplying
energy totheCommunity ; ■ <; t /• '•"•■ .
Whereas thetechnologi6al problems relating tonuclear safety ^parti­
cularly inview oftheir environmental andhealth implications ,call
forappropriate action atCommunity level which takes into account
theprerogatives andresponsibilities assumed bynational authorities
Whereas ,byaligning safety requirements ,thenational authorities
responsible fornuclear safety andconstructors andenergy producers
will beable tobenefit from aharmonized approach totheproblem at .
Community level ;
()OJNoC128 ,9-6.1975 ,page2k.
(2)CES618/75-
/

-2- 677 ,III/75-E
Whereas nuclear safety problems extend beyond thefrontiers notonly
ofMember States butoftheCommunity as whole ,and itisincumbent
ontheCommission toactasacatalyst forinitiatives tobetaken on
abroader international plane , : ; *'■ •
HEREBY ADOPTS THIS RESOLUTION : •. ;r .
THE COUNCIL
1.requests theMember States aswell asthelicensing authorities
and "thesafety andinspection authorities ,ontheonehand ,and
theoperators andconstructors ,ontheother ,and finally ,the
agencies responsible forapplied' research programmes tocontinue
tocollaborate effectively -atCommunity :level ; :
2.agrees iothecourse ofaction instages indicated below bythe .
Commission inrespect oftheprogressive harmonization ofsafety .-
requirements and criteria inorder toprovide anequivalent and
satisfactory degree ofprotection ofthepopulation andpfthe .
environment against therisks ofradiation resulting from ftuclear
activities and atthesame time toassist thedevelopment of
trade onthe'understanding that such harmohiaation should not -
involve anylowering ofthesafety -level already attained ;•>• .
taking into account the state ofindustrial development ,-inthe
respective families 6fhigh-power huclear reactors ,these stages
involve listing andcomparing therequirements andcriteria
applied anddrawing upabalance-sheet ofsimilarities anddis­
similarities;' formulating assoon aspossible recommendations
pursuant tothesecond indent ofArticle 12^oftheEuratom ,■.
Treaty ,andsubsequently submitting totheCouncil themost ;
suitable draft Community provisions ;

ο·-· " 677/111/75-E
J.agrees tostrengthen Cpmmunity efforts toco-ordinate applied
research programmes inorder tomake the .best possible .use of
theresources available intheCommunity and theMember States
both tephnically and financially whilst avoiding asfaras
possible unnecessary duplication ;these efforts shall beaimed
atimproving systematic exchanges ofinformation ,promoting
concerted action and co-operation between specialized bodies and
institutes andstimulating where appropriate thedevelopment of
Community programmes ;
approves ofthemethods used andadvocated bytheCommission ,
namely ,meetings ofWorking Parties ofspecialized experts ,
exchanges ofinformation onspecific operational problems and
analytical studies and syntheses with which these experts are
associated ;
5'notes that themeasures described above mayrequire appropriations
inorder tofinance analyses and syntheses and theappropriate
technical secretariat ;
6.requests theMember States tonotify theCommission ofanydraft
laws ,regulations orprovisions ofsimilar scope concerning the
safety ofnuclear installations inorder toenable theappropriate
consultations tobeheld atCommunity level attheinitiative of
the Commission ;
7'requests theMember States toseek common positions onanyproblems
concerning theharmonization ofrequirements andcriteria andthe
co-ordination ofresearch into nuclear safety being dealt with by
international organizations ;1
* 3-

-k- 677 .'III ,'73-E
3.requests theCommission tosubmit annual reports ontheprogress
made arid the Member "States and' the Commission ,to ^continue and
strengthen their efforts toensure that thepublic isgiven the .
best possible information about both national .andCommunity
action inthefield ofnuclear 5'safety *, ...'.

677/111/75-E
Orig .:F
FINANCIAL RECORD SHEET
Budget entry :Chapter 3»6o "Nuclear plant safety "inthestatement' c
expenditure relating toresearch and -investment acfci-
,vities (Annex ItoSection III "Commission "ofthe
budget oftheEuropean Communities ).
^e^ajL^basis :Article 7oftheEAEC Treaty
Proposal forwarded tothe .Commission "
Authorizi ngDepart men't:Directorate General forIndustrial and
Technological Affairs .
Description ,aims andground sforproject :
Support activities for theworking parties responsible forproblems
involved innuclear plant safety .
These include :
-compilation andpreparation ofdata onpractices ,requirements and
criteria applied inMember States ;
-evaluation ofdocumentation andpreparation ofsummary reports ;
-preparation ofcritical studies onthe state ofthe art ;
-organization ofdiscussions onsafety requirements and criteria .
The aim oftheprogramme istoprovide ascientific and technical
secretariat for theworking parties engaged ontheharmonization of
safety requirements and criteria and the coordination ofsafety
research onlight-water reactors .
These requirements derive from thevery wide range ofsubjects tobe
covered ,tneneed tomeet what areusually short deadlines and the
heavy burden ,ofwork which has fallen onthenational experts asa
result ofthepresent rapid development inMember States 'nuclear
programmes .
IX'rat icn ,o.f^project :1.1 .76~31.12.30 (5years )
£_baff :3Category A
1Category B
JLCategory C
5Community Servants
Costoftheproject :1.530.000 ua (staff expenditure andadministra­
tive expenditure )

... -2- 677/XII.'75-E
-imetaMeofcommitments andpayments:
1976 225.000"ua
3-57,7 ,200.COOua.
1973--:•300.000ua •
1979""...3^5,000ua. /_■;'.•
1980 400.000ua
•--Financingofproject:EnteredinChapter9»32ofthe1976budget.
Tjpe_ofec>ntrcl *topea'nplied: '..
Scientific andtechnical,controlwillbecarriedoutbytheworking
parties. 'V' .,. ... .'1
Financialcontrolwillbecarriedoutinaccordancewiththeprocedures
laidilj'vviibytheFinancialRegulationapplicabletoresearchappro­
priations.