CEN ISO/TS 18090-1:2019
(Main)Radiological protection - Characteristics of reference pulsed radiation - Part 1: Photon radiation (ISO/TS 18090-1:2015)
Radiological protection - Characteristics of reference pulsed radiation - Part 1: Photon radiation (ISO/TS 18090-1:2015)
ISO/TS 18090-1:2015 is directly applicable to pulsed X-radiation with pulse duration of 0,1 ms up to 10 s. This covers the whole range used in medical diagnostics at the time of publication. Some specifications may also be applicable for much shorter pulses; one example is the air kerma of one pulse. Such a pulse may be produced, e.g. by X-ray flash units or high-intensity femtosecond-lasers. Other specifications are not applicable for much shorter pulses; one example is the time-dependent behaviour of the air kerma rate. This may not be measurable for technical reasons as no suitable instrument is available, e.g. for pulses produced by a femtosecond-laser.
ISO/TS 18090-1:2015 specifies the characteristics of reference pulsed radiation for calibrating and testing radiation protection dosemeters and dose rate meters with respect to their response to pulsed radiation. The radiation characteristics includes the following:
a) time-dependent behaviour of the air kerma rate of the pulse;
b) time-dependent behaviour of the X-ray tube high voltage during the pulse;
c) uniformity of the air kerma rate within a cross-sectional area of the radiation beam;
d) air kerma of one radiation pulse;
e) air kerma rate of the radiation pulse;
f) repetition frequency.
ISO/TS 18090-1:2015 does not define new radiation qualities. Instead, it uses those radiation qualities specified in existing ISO and IEC standards. This part of ISO/TS 18090 gives the link between the parameters for pulsed radiation and the parameters for continuous radiation specifying the radiation qualities. It does not specify specific values or series of values for the pulsed radiation field but specifies only those limits for the relevant pulsed radiation parameters that are required for calibrating dosemeters and dose rate meters and for determining their response depending on the said parameters.
The pulse parameters with respect to the phantom-related quantities were determined using conversion coefficients according to ISO 4037 (all parts). This is possible as the radiation qualities specified in existing ISO and IEC standards are used.
A given reference pulsed X-ray facility is characterized by the parameter ranges over which the full specifications and requirements according to this part of ISO/TS 18090 are met. Therefore, not all reference pulsed X-ray facilities can produce pulses covering the same parameter ranges.
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 3-3: Aktive Breitbandgeräte für Kabelnetze - Messverfahren für den maximalen Betriebs-Ausgangspegel im Rückweg (ISO/TS 18090-1:2015)
Dieser Teil von ISO/TS 18090 ist direkt auf gepulste Röntgenstrahlung mit Pulsdauern von 0,1 ms bis 10 s anwendbar. Zur Zeit seiner Veröffentlichung überdeckt er den gesamten in der medizinischen Diagnostik verwendeten Bereich. Einige Spezifikationen können auch für viel kürzere Pulse anwendbar sein, ein Beispiel ist die Luftkerma eines Pulses. Ein derartiger Puls kann z. B. von einem Röntgenblitzgerät oder durch hoch-intensive Femtosekunden-Laser erzeugt werden. Andere Spezifikationen können nicht auf viel kürzere Pulse angewendet werden; ein Beispiel ist das zeitabhängige Verhalten der Luftkermaleistung. Diese kann aus technischen Gründen unmessbar sein, da es keine geeigneten Geräte gibt, z. B. für die von einem Femto-sekunden-Laser erzeugten Pulse.
Dieser Teil von ISO/TS 18090 legt die Charakteristika von gepulster Referenzstrahlung fest, die für die Kalib-rierung und Prüfung von Dosimetern und Dosisleistungsmessgeräten für den Strahlenschutz verwendet wird, um deren Ansprechvermögen hinsichtlich gepulster Strahlung zu bestimmen. Zu den Charakteristika der Strahlung gehören:
a) das zeitabhängige Verhalten der Luftkermaleistung des Pulses;
b) das zeitabhängige Verhalten der Hochspannung der Röntgenröhre während des Pulses;
c) die Gleichmäßigkeit der Luftkermaleistung innerhalb der Querschnittsfläche des Strahlenbündels;
d) die Luftkerma eines Strahlungspulses;
e) die Luftkermaleistung des Strahlungspulses;
f) die Pulsfrequenz.
Dieser Teil von ISO/TS 18090 definiert keine neuen Strahlungsqualitäten. Stattdessen verwendet er diejeni¬gen Strahlungsqualitäten, die in vorhandenen ISO- bzw. IEC-Normen spezifiziert sind. Dieser Teil von ISO/TS 18090 gibt die Verbindung zwischen den Parametern für gepulste Strahlung und den Parametern für kontinuierliche Strahlung an, mit denen die Strahlungsqualitäten spezifiziert sind. Er legt keine speziellen Werte oder Serien von Werten für das gepulste Strahlungsfeld fest, sondern legt nur jene Grenzen für die relevanten Parameter des gepulsten Strahlungsfeldes fest, die für die Kalibrierung von Dosimetern und Dosisleistungs-Messgeräten benötigt werden, um ihr Ansprechvermögen hinsichtlich gepulster Strahlung in Abhängigkeit von den genannten Parametern zu bestimmen.
Die Pulsparameter in Bezug auf die phantombezogenen Messgrößen werden unter Verwendung von Konver-sionskoeffizienten nach ISO 4037 (alle Teile) bestimmt. Dies ist möglich, da die in existierenden ISO- und IEC-Normen spezifizierten Strahlungsqualitäten verwendet werden.
Eine vorhandene Röntgen-Referenzanlage für gepulste Strahlung wird durch die Parameterbereiche charak-terisiert, für die alle Spezifikationen und Anforderungen nach diesem Teil von ISO/TS 18090 eingehalten werden. Deshalb können nicht alle Röntgen-Referenzanlagen für gepulste Strahlung Pulse produzieren, die die gleichen Parameterbereiche abdecken.
Radioprotection - Caractéristiques des champs de rayonnement pulsés de référence - Partie 1: Radiation de photons (ISO/TS 18090-1:2015)
L'ISO/TS 18090-1:2015 s'applique directement au rayonnement X pulsé ayant une durée d'impulsion comprise entre 0,1 ms et 10 s. Cela couvre toute la gamme utilisée en diagnostic médical au moment de la publication. Certaines spécifications peuvent également s'appliquer à des impulsions beaucoup plus courtes; un exemple est le kerma dans l'air d'une impulsion. Une telle impulsion peut être produite, par exemple, par des générateurs de rayons X « éclair » ou des lasers femtoseconde intenses. D'autres spécifications ne s'appliquent pas aux impulsions beaucoup plus courtes; un exemple est le comportement du débit kerma dans l'air en fonction du temps. Il se peut qu'il ne soit pas mesurable pour des raisons techniques, car aucun instrument approprié n'est disponible, par exemple pour des impulsions produites par un laser femtoseconde.
L'ISO/TS 18090-1:2015 spécifie les caractéristiques d'un rayonnement pulsé de référence pour l'étalonnage et les essais de dosimètres de radioprotection et de débitmètres de dose par rapport à leur réponse à un rayonnement pulsé. Les caractéristiques du rayonnement comprennent ce qui suit:
a) le comportement en fonction du temps du débit de kerma dans l'air de l'impulsion;
b) le comportement en fonction du temps de la haute tension du tube à rayons X pendant l'impulsion;
c) l'uniformité du débit de kerma dans l'air dans une section transversale du faisceau de rayonnement;
d) le kerma dans l'air d'une impulsion de rayonnement;
e) le débit de kerma dans l'air de l'impulsion de rayonnement;
f) la fréquence de répétition.
L'ISO/TS 18090-1:2015 ne définit pas de nouvelles qualités de rayonnement. Au lieu de cela, elle utilise les qualités de rayonnement spécifiées dans les normes ISO et IEC existantes. L'ISO/TS 18090-1:2015 indique la relation entre les paramètres relatifs à un rayonnement pulsé et les paramètres relatifs à un rayonnement continu spécifiant les qualités de rayonnement. Elle ne stipule pas de valeurs spécifiques ni de séries de valeurs pour le champ de rayonnement pulsé, mais spécifie uniquement les limites pour les paramètres pertinents de rayonnement pulsé qui sont requis pour l'étalonnage des dosimètres et des débitmètres de dose et pour la détermination de leur réponse en fonction desdits paramètres.
Radiološka zaščita - Značilnosti referenčnega impulznega sevanja - 1. del: Fotonsko sevanje (ISO/TS 18090-1:2015)
Standard ISO/TS 18090-1:2015 se neposredno uporablja za impulzno rentgensko sevanje s trajanjem impulza od 0,1 ms do 10 s. To zajema celoten nabor, ki se v času objave uporablja v medicinski diagnostiki. Nekatere specifikacije se lahko uporabljajo tudi za precej krajše impulze; primer je kerma v zraku enega impulza. Takšen impulz lahko proizvedejo na primer enote za generiranje rentgenskih žarkov ali visoko intenzivni femtosekundni laserji. Druge specifikacije se ne uporabljajo za precej krajše impulze; primer je časovno odvisno vedenje stopnje kerme v zraku. Tega morda ni mogoče izmeriti iz tehničnih razlogov, saj primerni inštrumenti niso na voljo, npr. za impulze, ki jih proizvede femtosekundni laser.
Standard ISO/TS 18090-1:2015 določa značilnosti referenčnega impulznega sevanja za umerjanje ter preskušanje dozimetrov za zaščito pred sevanjem in merilnikov odmerkov v zvezi z njihovim odzivom na impulzno sevanje. Značilnosti sevanja vključujejo naslednje:
a) časovno odvisno vedenje stopnje kerme v zraku impulza;
b) časovno odvisno vedenje visoke napetosti rentgenske cevi med impulzom;
c) enakomernost stopnje kerme v zraku v prečnem prerezu radiološkega žarka;
d) kerma v zraku enega impulza sevanja;
e) stopnja kerme v zraku impulza sevanja;
f) pogostost ponovitve.
Standard ISO/TS 18090-1:2015 ne določa novih kakovosti sevanja. Namesto tega uporablja kakovosti sevanja, ki so določene v obstoječih standardih ISO in IEC. Ta del standarda ISO/TS 18090 podaja povezavo med parametri impulznega sevanja in parametri neprekinjenega sevanja ter tako določa kakovosti sevanja. Ne določa posebnih vrednosti ali nabora vrednosti za področje impulznega sevanja, ampak določa samo tiste mejne vrednosti za zadevne parametre impulznega sevanja, ki so zahtevani za umerjanje dozimetrov in merilnikov odmerkov ter za določanje odziva glede na navedene parametre.
Impulzni parametri v zvezi s fantomskimi količinami so bili določeni s pomočjo koeficientov pretvorbe v skladu s standardom ISO 4037 (vsi deli). To je mogoče, ker se uporabljajo kakovosti sevanja, ki so določene v obstoječih standardih ISO in IEC.
Za podano referenčno impulzno rentgensko opremo je značilno, da razponi parametrov presegajo vrednosti, za katere so izpolnjenje celotne specifikacije in zahteve v skladu s tem delom standarda ISO/TS 18090. Zato nekatera referenčna impulzna rentgenska oprema ne more proizvajati impulzov, ki zajemajo iste razpone parametrov.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2019
Radiološka zaščita - Značilnosti referenčnega impulznega sevanja - 1. del:
Fotonsko sevanje (ISO/TS 18090-1:2015)
Radiological protection - Characteristics of reference pulsed radiation - Part 1: Photon
radiation (ISO/TS 18090-1:2015)
Strahlenschutz - Eigenschaften gepulster Referenzstrahlung - Teil 1: Photonenstrahlung
(ISO/TS 18090-1:2015)
Radioprotection - Caractéristiques des champs de rayonnement pulsés de référence -
Partie 1: Radiation de photons (ISO/TS 18090-1:2015)
Ta slovenski standard je istoveten z: CEN ISO/TS 18090-1:2019
ICS:
13.280 Varstvo pred sevanjem Radiation protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN ISO/TS 18090-1
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
September 2019
TECHNISCHE SPEZIFIKATION
ICS 13.280
English Version
Radiological protection - Characteristics of reference
pulsed radiation - Part 1: Photon radiation (ISO/TS 18090-
1:2015)
Radioprotection - Caractéristiques des champs de Strahlenschutz - Eigenschaften gepulster
rayonnement pulsés de référence - Partie 1: Radiation Referenzstrahlung - Teil 1: Photonenstrahlung (ISO/TS
de photons (ISO/TS 18090-1:2015) 18090-1:2015)
This Technical Specification (CEN/TS) was approved by CEN on 12 August 2019 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
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United Kingdom.
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© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 18090-1:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO/TS 18090-1:2015 has been prepared by Technical Committee ISO/TC 85 "Nuclear
energy, nuclear technologies, and radiological protection” of the International Organization for
Standardization (ISO) and has been taken over as CEN ISO/TS 18090-1:2019 by Technical Committee
CEN/TC 430 “Nuclear energy, nuclear technologies, and radiological protection” the secretariat of
which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/TS 18090-1:2015 has been approved by CEN as CEN ISO/TS 18090-1:2019 without any
modification.
TECHNICAL ISO/TS
SPECIFICATION 18090-1
First edition
2015-08-01
Radiological protection —
Characteristics of reference pulsed
radiation —
Part 1:
Photon radiation
Radioprotection — Caractéristiques des champs de rayonnement
pulsés de référence —
Partie 1: Radiation de photons
Reference number
ISO/TS 18090-1:2015(E)
©
ISO 2015
ISO/TS 18090-1:2015(E)
© ISO 2015, Published in Switzerland
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ISO/TS 18090-1:2015(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Characteristics of reference pulsed radiation . 5
4.1 General . 5
4.2 Time-dependent air kerma rate characteristics of the radiation pulse . 5
4.2.1 Requirements . 5
4.2.2 Method of test . 6
4.2.3 Interpretation of the results . 7
4.3 Time-dependent high voltage characteristics of the radiation pulse . 7
4.3.1 Requirement . 7
4.3.2 Method of test . 7
4.3.3 Interpretation of the results . 7
4.4 Space dependent air kerma characteristics of the radiation pulse. 7
4.4.1 Requirement on field uniformity across the beam area . 7
4.4.2 Method of test . 7
4.4.3 Interpretation of the results . 8
4.5 Filtration . 8
4.6 Equivalence of measured radiation pulse and trapezoidal pulse . . 8
4.6.1 Requirements . 8
4.6.2 Method of test . 8
4.6.3 Interpretation of the results . 8
4.7 Constancy of air kerma rate during the pulse plateau time . 9
4.7.1 Requirement . 9
4.7.2 Method of test . 9
4.7.3 Interpretation of results . 9
5 Dosimetry of pulsed reference radiation .11
5.1 General requirements on the instrument .11
5.2 Air kerma rate dependence of the instrument response .11
5.2.1 General.11
5.2.2 Requirement .11
5.2.3 Method of test and interpretation of the results .11
5.3 Size of the sensitive volume of the instrument .12
5.4 Air kerma of the radiation pulse .12
5.5 Dose equivalent of the radiation pulse .12
5.6 Radiation pulse air kerma rate .12
5.7 Radiation pulse dose equivalent rate .12
Annex A (informative) Diode-detector and associated amplifier .13
Annex B (informative) Determination of the equivalent trapezoid radiation pulse .15
Bibliography .17
ISO/TS 18090-1:2015(E)
Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified
...
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