EN 14255-1:2005

SLOVENSKI STANDARD
01-september-2005
Merjenje in ugotavljanje izpostavljenosti oseb inkoherentnemu optičnemu sevanju
na delovnem mestu – 1. del: Ultravijolično sevanje »umetnih« svetlobnih virov
Measurement and assessment of personal exposures to incoherent optical radiation -
Part 1: Ultraviolet radiation emitted by artificial sources in the workplace
Messung und Beurteilung von personenbezogenen Expositionen gegenüber
inkohärenter optischer Strahlung - Teil 1: Von künstlichen Quellen am Arbeitsplatz
emittierte ultraviolette Strahlung
Mesurage et évaluation de l'exposition des personnes aux rayonnements optiques
incohérents - Partie 1: Rayonnements ultraviolets émis par des sources artificielles sur
les lieux de travail
Ta slovenski standard je istoveten z: EN 14255-1:2005
ICS:
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14255-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2005
ICS 17.240
English version
Measurement and assessment of personal exposures to
incoherent optical radiation - Part 1: Ultraviolet radiation emitted
by artificial sources in the workplace
Mesurage et évaluation de l'exposition des personnes aux Messung und Beurteilung von personenbezogenen
rayonnements optiques incohérents - Partie 1: Expositionen gegenüber inkohärenter optischer Strahlung -
Rayonnements ultraviolets émis par des sources Teil 1: Von künstlichen Quellen am Arbeitsplatz emittierte
artificielles sur les lieux de travail ultraviolette Strahlung
This European Standard was approved by CEN on 3 February 2005.
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 Central Secretariat or to any CEN 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 CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14255-1:2005: E
worldwide for CEN national Members.

Contents
Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 General procedure.7
5 Preliminary Review.8
6 Work task analysis.8
7 Measurement of the exposure.9
7.1 Planning.9
7.2 Quantities to be determined .10
7.3 Selection of method.10
7.4 Requirements for the measurement methods .11
7.5 Implementation .13
7.6 Expression of results .14
8 Assessment of the exposure.14
8.1 General.14
8.2 Comparison with limit value.14
8.3 Statement.14
8.4 Additional information .15
9 Decision about protective measures.15
10 Repetition of measurement and assessment .15
11 Report .15
11.1 Short report .15
11.2 Full report .16
Annex A (informative) Flowchart of procedure .17
Annex B (informative) Tables (examples) for work task analysis .18
Annex C (informative) Commonly used radiation measurement devices .20
Annex D (informative) Methods for the measurement of UV-exposures.22
D.1 General.22
D.2 Methods A to F for the measurement of the ultraviolet hazard radiant exposure H (180
s
nm to 400 nm).22
D.3 Methods G to L for the measurement of the radiant exposure H (315 nm to 400 nm) .25
D.4 Methods M to P for the measurement of the irradiance E (315 nm to 400 nm) .28
Annex E (informative) Examples of protective measures .31
Bibliography .32

Foreword
This document (EN 14255-1:2005) has been prepared by Technical Committee CEN/TC 169 “Light and
lighting”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2005, and conflicting national standards shall be
withdrawn at the latest by September 2005.
This document includes a Bibliography.
EN 14255 Measurement and assessment of personal exposures to incoherent optical radiation is published in
four parts:
 Part 1 (this part): Ultraviolet radiation emitted by artificial sources in the workplace
 Part 2: Visible and infrared radiation emitted by artificial sources in the workplace (in preparation)
 Part 3: UV-Radiation — Natural sources (in preparation)
 Part 4: Terminology and quantities used in UV-, visible and IR-exposure measurements (in preparation)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
Introduction
People may be exposed to ultraviolet (UV) radiation in the workplace. The most important natural source for
such UV-radiation is the sun. There are also artificial UV-radiation sources, where UV-radiation is intentionally
emitted to achieve the purpose of the source’s application (e.g. UV-lamps for drying of printing colours, UV-
lamps for testing of material, lamps for UV-disinfection, UV-phototherapy of patients and solaria devices, etc.)
or where UV-radiation is unintentionally produced (such as welding arcs, some types of lamps, etc.). Time
spent near these artificial sources may result in significant UV-exposure.
When people are irradiated by UV-radiation, injuries may occur. The eyes and the skin may be damaged by
short term UV-irradiation of high intensity. Typical injuries are photoconjunctivitis and photokeratitis of the eye
and UV-erythema of the skin. Minor doses of UV-radiation may induce or aggravate some diseases like
porphyria or lupus erythematosis or may trigger phototoxic and photoallergic reactions. But additionally, long
term UV-irradiation may result in damage to the eyes and skin, such as cataracts, skin aging and skin cancer.
In order to avoid short term injuries and reduce additional risks from long term UV-exposures national
regulations and international recommendations require restriction of UV-exposures in the workplace. To
achieve this, it is necessary to determine the level of UV-exposure and assess its gravity.
The determination of the level of UV-exposure can be done by measurement of the UV-exposure of the
people likely to be exposed. Determination of the severity of an UV-exposure is normally done by comparison
of the determined UV-exposure level with the required or recommended limit value. When the UV-exposure
level complies with the limit value no further action is necessary. When the limit value is exceeded protective
measures have to be applied in order to decrease the UV-exposure. As the exposure situation in the
workplace may change, it may be necessary to repeat the determination and assessment of UV-exposure at a
later time.
UV radiation exposure measurements are often costly and time consuming. So it is reasonable to avoid
measurements if possible, i. e. if the personal UV radiation exposure can be estimated and either exceeds the
limit values by far or is far below the limit values. In some cases, the manufacturer may have classified a
device according to International Standards such as EN 12198 and CIE S009. Knowledge of the classification
of all potential sources of UV may allow a sufficiently precise assessment of hazard to be made without further
measurement. Another approach could be to use known spectral data of sources in combination with
calculation software in order to estimate exposure level [6]. UV- exposure measurements are only necessary if
it cannot be estimated in advance whether the limit values will be exceeded or not. So as a first step of the
assessment procedure it is useful to carry out a preliminary review including an exposure estimation.
This document does not specify UV-exposure limit values. UV-exposure limit values are set in national
regulations or provided by international organizations, such as the International Commission for Non-ionizing
Radiation Protection (ICNIRP) [1-3]. This document specifies the procedures for measurement and
assessment of UV-exposures in the workplace. As the results of measurement and assessment of UV-
exposure depend on the method of implementation, it is important to carry out measurements and
assessments in a standardised way.
1 Scope
This document specifies procedures for the measurement and assessment of personal exposures to
ultraviolet (UV) radiation emitted by artificial sources, where adverse effects can not readily be excluded.
NOTE 1 Adverse effects will usually not occur in exposures caused by commonly used artificial lighting. However,
exposures to very strong light sources or light sources with extended spectra may cause a health risk nevertheless.
This document applies to UV-exposures in indoor and outdoor workplaces. It does not apply to UV-exposures
in leisure time.
This document does not apply to UV-exposure caused by the sun.
NOTE 2 Part 3 of this standard will deal with UV-exposure caused by the sun.
This document does not specify UV-exposure limit values. It supports the application of limit values set by
national regulations or international recommendations.
This document applies to UV-exposures by artificial incoherent sources, which emit spectral lines as well as
continuous spectra. This document does not apply to coherent radiation sources.
NOTE 3 Coherent optical radiation sources are covered by standards for lasers, like EN 60825-1 etc.
This document a
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