【正文】
revision was to restrict to those requirements that apply to all diagnostic XRAY EQUIPMENT. In consequence, most of the clauses have been reduced pared with the first edition of this standard, owing to the exclusion of content specific to projection RADIOGRAPHY and RADIOSCOPY. Implementation shall be considered in the RISK MANAGEMENT process or by using particular standards. The remended principles governing the use of RADIATION for medical purposes, as stated in Publication 60 of the International Commission on Radiological Protection (ICRP )[17] 1), Chapter 4, have been taken into account. The implementation of these principles is essentially determined in the prevailing circumstances at the point of use. It requires judgements to be made by the user and the establishment of measures and working practices part of which are connected with the construction of EQUIPMENT. The requirements in this collateral Standard are intended to be consistent with generally accepted good practice in the administration of XRADIATION in medicine. In some cases, the formulation of the requirements is deliberately designed to provide scope for acmodating local laws and regulations at the time of installation and missioning. Several of the requirements include provisions for relevant technical information to be included in ACCOMPANYING DOCUMENTS. RESPONSIBLE ORGANIZATIONs for medical diagnostic XRAY EQUIPMENT should be aware that effective protection against IONIZING RADIA TIO N requires the consideration of many aspects additional to the construction of the EQUIPMENT. Among these are the following: ? patibility of ponents and correct installation of EQUIPMENT。 quotient of dK by dt, where dK is the increment of AIR KERMA in the time interval dt, thus Kamp。 ? measures for monitoring and maintaining the safety and effectiveness of EQUIPMENT throughout its life, with particular attention to ponents that can deteriorate progressively with time and use。 ? informative material appearing outside of tables, such as notes, examples and references: in smaller type. Normative text of tables is also in a smaller type。t en (IEC 6060113:2020) This European Standard was approved by CENELEC on 20200301. CENELEC members are bound to ply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical mittees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit233。 de base et les performances essentielles Norme collat233。ENNE EUROP196。 BSI 2020 ISBN 978 0 580 54236 7 Amendments/corrigenda issued since publication Date Comments EUROPEAN STANDARD EN 6060113 NORME EUROP201。curit233。ntgenger228。 ? test specifications: in italic type。 ? the protective properties of rooms where XRAY EQUIPMENT is installed。 = dK dt Unit: J kg–1 s–1 If the special name gray is used, the unit of AIR KERMA RATE is gray per second (Gy s–1) (ICRU 60) [20] [IEC 60580:2020, definition ] [8] AM BIENT DOSE EQUIV ALENT H*(d) at a point in a RADIATION FIELD, the DOSE EQUIVALENT that would be produced by corresponding expanded and aligned field, in the ICRU sphere at a depth, d, on the radius opposing the direction of the aligned field Unit: J kg–1 The special name for the unit of AMBIENT DOSE EQUIVALENT is sievert (Sv) (ICRU 51)[19] ATTENU ATION reduction of a RADIATION QUANTITY upon passage of the RADIATION through matter resulting from all types of interaction with this matter NOTE The RAD I A T I ON QUA NTITY may be, for example, the particle flux density or the energy density. AT T ENU AT I O N does not include the geometric reduction of the RADIA TION QUANTITY with distance from the RADIA TION SOURCE. ATTENUATION EQUIV ALENT δ thickness of a layer of reference material which, if substituted for the material under consideration in a beam of specified RADIATION QUALITY and under specified geometrical conditions, gives the same degree of ATTENUATION. ATTENUATION EQUIVALENT is expressed in suitable submultiples of the metre together with the reference AUTOM ATIC CONTROL SYSTEM in an XRAY EQUIPMENT, system in which the control or limitation of the electric energy delivered to an XRAY TUBE ASSEMBLY depends upon the measurement of one or more RADIATION QUANTITIES or corresponding physical quantities AUTOM ATIC EXPOSURE CONTROL in an XRAY EQUIPMENT, MODE OF OPERATION in which one or more LOADING FACTORS are controlled automatically in order to obtain at a preselected location a desired quantity of RADIATION BE AM LIMITING DEVICE device to limit the RADIATION FIELD – 11 – BS EN 6060113:2020 BE AM LIMITING SYSTEM enti