EN 60793-1-54:2013
(Main)Optical fibres - Part 1-54: Measurement methods and test procedures - Gamma irradiation
Optical fibres - Part 1-54: Measurement methods and test procedures - Gamma irradiation
IEC 60793-1-54:2012(E) outlines a method for measuring the steady state response of optical fibres and optical cables exposed to gamma radiation. It can be employed to determine the level of radiation induced attenuation produced in Class B single-mode or Class A, category A1 and A2 multimode optical fibres, in either cabled or uncabled form, due to exposure to gamma radiation. This second edition cancels and replaces the first edition, published in 2003. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: launching conditions and optical sources have been reviewed and are better defined. Keywords: gamma radiation, optical fibres, optical cables
Lichtwellenleiter - Teil 1-54: Messmethoden und Prüfverfahren - Radioaktive Strahlung
Fibres optiques - Partie 1-54: Méthodes de mesure et procédures d'essai - Irradiation gamma
La CEI 60793-1-54:2012 présente une méthode de mesure de la réponse en régime permanent des fibres optiques et câbles optiques exposés au rayonnement gamma. Elle peut être utilisée pour déterminer le niveau d'affaiblissement induit par le rayonnement produit dans les fibres optiques unimodales de Classe B ou multimodales de Classe A, catégories A1 et A2, sous forme câblée ou non câblée, du fait d'une exposition au rayonnement gamma. Cette deuxième édition annule et remplace la première édition publiée en 2003. Elle constitue une révision technique. La présente édition contient les changements techniques significatifs suivants par rapport à l'édition précédente: les conditions d'injection et les sources optiques ont été revues et sont mieux définies. Mots clés: rayonnement gamma, fibres optiques, câbles optiques
Optična vlakna - 1-54. del: Metode merjenja in preskusni postopki - Gama sevanje (IEC 60793-1-54:2012)
Ta del standarda IEC 60793 določa metodo za merjenje odziva v stacionarnem stanju optičnih vlaken in optičnih kablov, izpostavljenih gama sevanju. Uporablja se za določanje ravni slabljenja pod vplivom sevanja, ki nastaja v enorodnih optičnih vlaknih razreda B ali večrodnih optičnih vlaknih razreda A, kategorije A1 ali A2, ki so kablirana ali nekablirana, zaradi izpostavljenosti gama sevanju. Slabljenje optičnih vlaken, ki so kablirana ali nekablirana, se na splošno poveča, če so vlakna izpostavljena gama sevanju. Do tega pride predvsem zaradi zajetja radiolitskih elektronov in lukenj na poškodovanih mestih v steklu (npr. nastajanje »barvnih centrov«). Preskusni postopek se osredotoča na dva režima: režim z nizkim pretokom doze, ki je primeren za določanje učinka radioaktivnega sevanja ozadja v okolju, in režim z visokim pretokom doze, ki je primeren za določanje učinka škodljivih jedrskih okolij. Preskušanje učinkov radioaktivnega sevanja ozadja v okolju se izvaja z načinom merjenja slabljenja, podobnim metodi A iz standarda IEC 60793-1-40, tj. rezanje. Učinki škodljivih jedrskih okolij se preskušajo s spremljanjem moči pred, med in po izpostavljenosti preskusnega vzorca gama sevanju. Praznjenje barvnih centrov s svetlobo (bledenje fluorescence) ali toploto povzroči obnovitev (zmanjšanje slabljenja pod vplivom sevanja). Do obnovitve lahko pride v različnem času, kar je odvisno od časa obsevanja in temperature žarjenja. S tem postane karakterizacija slabljenja pod vplivom sevanja zapletena, saj je slabljenje odvisno od številnih spremenljivk, npr. temperature preskusnega okolja, oblike vzorca, skupne doze in doze, uporabljene za vzorec, ter ravni svetlobe za meritev. Preskus ni preskus materialov za neoptične materialne sestavne dele optičnega kabla. Za preskušanje staranja materialov kabla, izpostavljenih obsevanju, se uporabljajo druge metode. Ta preskusna metoda vsebuje jasen in jedrnat seznam navodil. Splošno znanje, potrebno za izvajanje pravilnih, ustreznih in ekspresivnih preskusov obsevanja ter za omejitev merilne negotovosti, je predstavljeno posebej v standardu IEC/TR 62283. Opozoriti je treba na dejstvo, da je treba za ta preskus v laboratoriju sprejeti stroge predpise in primerne zaščitne naprave. Ta preskus izvaja skrbno izbrano usposobljeno osebje. Preskus je lahko zelo nevaren za osebje, če se izvaja nepravilno ali brez kvalificiranih pogojev.
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60793-1-54:2013
01-marec-2013
1DGRPHãþD
SIST EN 60793-1-54:2004
2SWLþQDYODNQDGHO 0HWRGHPHUMHQMDLQSUHVNXVQLSRVWRSNL*DPDVHYDQMH
,(&
Optical fibres - Part 1-54: Measurement methods and test procedures - Gamma
irradiation (IEC 60793-1-54:2012)
Lichtwellenleiter - Teil 1-54: Messmethoden und Prüfverfahren - Radioaktive Strahlung
(IEC 60793-1-54:2012)
Fibres optiques - Partie 1-54: Méthodes de mesure et procédures d'essai - Irradiation
gamma (CEI 60793-1-54:2012)
Ta slovenski standard je istoveten z: EN 60793-1-54:2013
ICS:
17.240 Merjenje sevanja Radiation measurements
33.180.10 2SWLþQD YODNQDLQNDEOL Fibres and cables
SIST EN 60793-1-54:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60793-1-54:2013
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SIST EN 60793-1-54:2013
EUROPEAN STANDARD
EN 60793-1-54
NORME EUROPÉENNE
January 2013
EUROPÄISCHE NORM
ICS 33.180.10 Supersedes EN 60793-1-54:2003
English version
Optical fibres -
Part 1-54: Measurement methods and test procedures -
Gamma irradiation
(IEC 60793-1-54:2012)
Fibres optiques - Lichtwellenleiter -
Partie 1-54: Méthodes de mesure Teil 1-54: Messmethoden
et procédures d'essai - und Prüfverfahren -
Irradiation gamma Radioaktive Strahlung
(CEI 60793-1-54:2012) (IEC 60793-1-54:2012)
This European Standard was approved by CENELEC on 2012-11-29. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-54:2013 E
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SIST EN 60793-1-54:2013
EN 60793-1-54:2013 - 2 -
Foreword
The text of document 86A/1413/CDV, future edition 2 of IEC 60793-1-54, prepared by SC 86A "Fibres
and cables" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 60793-1-54:2013.
The following dates are fixed:
• latest date by which the document has (dop) 2013-08-29
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-11-29
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60793-1-54:2003.
EN 60793-1-54:2013 includes the following significant technical changes with respect to
EN 60793-1-54:2003:
- launching conditions and optical sources have been reviewed and are better defined.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60793-1-54:2012 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60793-2-10 NOTE Harmonised as EN 60793-2-10.
IEC 60793-2-20 NOTE Harmonised as EN 60793-2-20.
IEC 60793-2-50 NOTE Harmonised as EN 60793-2-50.
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SIST EN 60793-1-54:2013
- 3 - EN 60793-1-54:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its
...
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