【正文】 .......................................................... 26 – 5 – BS EN 6060113:2020 HALFVALUE LAYERS and TOTAL FILTRATION in XRAY EQUIPMENT ............................... 26 W aveform of the XRAY TUBE VOLTAGE................................................................ 27 Indication of FILTER properties ............................................................................... 27 Test for FILTRATION by irremovable materials ......................................................... 28 Test for ADDED FILTERS and materials ..................................................................... 28 Test for HALFVALUE LAYER ..................................................................................... 28 8 Limitation of the extent of the XRAY BEAM and relationship between XRAY FIELD and IMAGE RECEPTION AREA ............................................................................................. 28 General ................................................................................................................ . 28 Enclosure of XRAY TUBES ...................................................................................... 28 Limiting DIAPHRAGM in XRAY TUBE ASSEMBLIES ....................................................... 29 Confinement of EXTRAFOCAL RADIATION ................................................................. 29 Relationship between XRAY FIELD and IMAGE RECEPTION AREA ............................... 29 General ..................................................................................................... 29 * FOCAL SPOT TO IMAGE RECEPTOR DISTANCE ................................................ 29 Correspondence between XRAY FIELD and EFFECTIVE IMAGE RECEPTION AREA ......................................................................................... 29 Positioning of the PATIENT and restriction of the irradiated area.................. 30 9 FOCAL SPOT TO SKIN DISTANCE .......................................................................................... 30 General ................................................................................................................. 30 Information in the ACCOMPANYING DOCUMENTS ........................................................ 30 10 ATTENUATION of the XRAY BEAM between the PATIENT and the XRAY IMAGE RECEPTOR ..................................................................................................... .................. 30 General ................................................................................................................. 30 Information in the ACCOMPANYING DOCUMENTS ........................................................ 30 11 Protection against RESIDUAL RADIATION ............................................................................ 31 12 * Protection against LEAKAGE RADIATION .......................................................................... 31 General ................................................................................................................. 31 Mounting of XRAY SOURCE ASSEMBLIES and XRAY IMAGING ARRANGEMENTS ............ 31 Statement of reference LOADING conditions ........................................................... . 32 LEAKAGE RADIATION in the LOADING STATE ............................................................... 32 LEAKAGE RADIATION when not in the LOADING STATE ................................................ 33 13 Protection against STRAY RADIATION ................................................................................ 33 General ................................................................................................................. 33 Control of XRAY EQUIPMENT from a PROTECTED A REA.............................................. 33 Protection by distance ........................................................................................... 34 * Designated SIGNIFICANT ZONES OF OCCUPANCY ..................................................... 34 Handgrips and control devices .............................................................................. 35 * Test for STRAY RADIATION ..................................................................................... 35 Annex A (informative) General guidance and rationale ......................................................... 37 Annex B (normative) Values of the series R39。 ? 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。r Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B 1050 Brussels 169。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