ENIS0 20785-3 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM June 2023 ICS13.280;17.240;49.020 Supersedes EN IS0 20785-3:2017 English Version Dosimetry for exposures to cosmic radiation in civilian aircraft - Part 3: Measurements at aviation altitudes (IsO 20785-3:2023) Dosimétrie pour les expositions au rayonnement Dosimetrie zu Expositionen durch kosmische cosmique a bord d'un avion civil - Partie 3: Mesurages Strahlung in Zivilluftfahrzeugen - Teil 3: Messungen auf a bord d'avions (IS0 20785-3:2023) Flughohen (IS0 20785-3:2023) This European Standard was approved by CEN on 10 June 2023. CEN 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 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by Centrehasthesame status astheofficial versions. Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkiye and United Kingdom. EUROPEANCOMMITTEEFOR STANDARDIZATION COMITEEUROPEENDENORMALISATION EUROPAISCHESKOMITEEFURNORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2023CEN Allrightsofexploitationinanyformandbyanymeansreserved Ref. No. EN IS0 20785-3:2023 E worldwidefor CEN national Members. EN IS0 20785-3:2023 (E) Contents Page European foreword... 2