ASTM E3022-18
(Practice)Standard Practice for Measurement of Emission Characteristics and Requirements for LED UV-A Lamps Used in Fluorescent Penetrant and Magnetic Particle Testing
Standard Practice for Measurement of Emission Characteristics and Requirements for LED UV-A Lamps Used in Fluorescent Penetrant and Magnetic Particle Testing
SIGNIFICANCE AND USE
4.1 UV-A lamps are used in fluorescent penetrant and magnetic particle examination processes to excite fluorophores (dyes or pigments) to maximize the contrast and detection of discontinuities. The fluorescent dyes/pigments absorb energy from the UV-A radiation and re-emit visible light when reverting to its ground state. This excitation energy conversion allows fluorescence to be observed by the human eye.
4.2 The emitted spectra of UV-A lamps can greatly affect the efficiency of dye/pigment fluorescent excitation.
4.3 Some high-intensity UV-A lamps can produce irradiance greater than 10 000 μW/cm2 at 15 in. (381 mm). All high-intensity UV-A light sources can cause fluorescent dye fade and increase exposure of the inspector’s unprotected eyes and skin to high levels of damaging radiation.
4.4 UV-A lamps can emit unwanted visible light and harmful UV radiation if not properly filtered. Visible light contamination above 400 nm can interfere with the inspection process and must be controlled to minimize reflected glare and maximize the contrast of the indication. UV-B and UV-C contamination must also be eliminated to prevent exposure to harmful radiation.
4.5 Pulse Width Modulation (PWM) and Pulse Firing (PF) of UV-A LED circuits are not permitted.
Note 1: The ability of existing UV-A radiometers and spectroradiometers to accurately measure the irradiance of pulse width modulated or pulsed fired LEDs and the effect of pulsed firing on indication detectability is not well understood.
SCOPE
1.1 This practice covers the procedures for testing the performance of ultraviolet A (UV-A), light emitting diode (LED) lamps used in fluorescent penetrant and fluorescent magnetic particle testing (see Guides E709 and E2297, and Practices E165/E165M, E1208, E1209, E1210, E1219, E1417/E1417M and E1444).2 This specification also includes reporting and performance requirements for UV-A LED lamps.
1.2 These tests are intended to be performed only by the manufacturer to certify performance of specific lamp models (housing, filter, diodes, electronic circuit design, optical elements, cooling system, and power supply combination) and also includes limited acceptance tests for individual lamps delivered to the user. This test procedure is not intended to be utilized by the end user.
1.3 This practice is only applicable for UV-A LED lamps used in the examination process. This practice is not applicable to mercury vapor, gas-discharge, arc or luminescent (fluorescent) lamps or light guides (for example, borescope light sources).
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E3022 − 18
Standard Practice for
Measurement of Emission Characteristics and
Requirements for LED UV-A Lamps Used in Fluorescent
1
Penetrant and Magnetic Particle Testing
This standard is issued under the fixed designation E3022; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 This practice covers the procedures for testing the
mine the applicability of regulatory limitations prior to use.
performance of ultraviolet A (UV-A), light emitting diode
1.6 This international standard was developed in accor-
(LED) lamps used in fluorescent penetrant and fluorescent
dance with internationally recognized principles on standard-
magnetic particle testing (see Guides E709 and E2297, and
ization established in the Decision on Principles for the
Practices E165/E165M, E1208, E1209, E1210, E1219, E1417/
2 Development of International Standards, Guides and Recom-
E1417M and E1444). This specification also includes report-
mendations issued by the World Trade Organization Technical
ing and performance requirements for UV-A LED lamps.
Barriers to Trade (TBT) Committee.
1.2 These tests are intended to be performed only by the
manufacturer to certify performance of specific lamp models
2. Referenced Documents
(housing, filter, diodes, electronic circuit design, optical
3
2.1 ASTM Standards:
elements, cooling system, and power supply combination) and
E165/E165M Practice for Liquid Penetrant Testing for Gen-
also includes limited acceptance tests for individual lamps
eral Industry
delivered to the user. This test procedure is not intended to be
E709 Guide for Magnetic Particle Testing
utilized by the end user.
E1208 Practice for Fluorescent Liquid Penetrant Testing
1.3 This practice is only applicable for UV-A LED lamps
Using the Lipophilic Post-Emulsification Process
used in the examination process. This practice is not applicable
E1209 Practice for Fluorescent Liquid Penetrant Testing
to mercury vapor, gas-discharge, arc or luminescent (fluores-
Using the Water-Washable Process
cent) lamps or light guides (for example, borescope light
E1210 Practice for Fluorescent Liquid Penetrant Testing
sources).
Using the Hydrophilic Post-Emulsification Process
E1219 Practice for Fluorescent Liquid Penetrant Testing
1.4 The values stated in inch-pound units are to be regarded
Using the Solvent-Removable Process
as standard. The values given in parentheses are mathematical
E1316 Terminology for Nondestructive Examinations
conversions to SI units that are provided for information only
E1348 Test Method for Transmittance and Color by Spec-
and are not considered standard.
trophotometry Using Hemispherical Geometry
1.5 This standard does not purport to address all of the
E1417/E1417M Practice for Liquid Penetrant Testing
safety concerns, if any, associated with its use. It is the
E1444 Practice for Magnetic Particle Testing for Aerospace
E2297 Guide for Use of UV-A and Visible Light Sources and
1
This test method is under the jurisdiction of ASTM Committee E07 on
Meters used in the Liquid Penetrant and Magnetic Particle
Nondestructive Testing and is the direct responsibility of Subcommittee E07.03 on
Methods
Liquid Penetrant and Magnetic Particle Methods.
Current edition approved July 1, 2018. Published July 2018. Originally approved 4
2.2 Other Standards:
in 2015. Last previous edition approved in 2015 as E3022-15. DOI: 10.1520/
ANSI/ISO/IEC 17025 General Requirements for the Com-
E3022-18
2
The use of LED lamps for penetrant examination may be covered by a patent.
petence of Testing and Calibration Laboratories
Interested parties are invited to submit information regarding the identification of
alternative(s) to this patented item to ASTM International Headquarters. Your
comments will receive careful consideration at a meeting of the responsible
3
technical committee, which you may attend. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE: ASTM International takes no position respecting the validity of any patent contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
rights asserted in connection with any item mentioned in this standard. Users of this Standards volume information, refer to the standard’s Document Summary page on
standard are expressly advised that determination of the validit
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E3022 − 15 E3022 − 18
Standard Practice for
Measurement of Emission Characteristics and
Requirements for LED UV-A Lamps Used in Fluorescent
1
Penetrant and Magnetic Particle Testing
This standard is issued under the fixed designation E3022; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice covers the procedures for testing the performance of ultraviolet A (UV-A), light emitting diode (LED) lamps
used in fluorescent penetrant and fluorescent magnetic particle testing (see Guides E709 and E2297, and Practices E165/E165M,
2
E1208, E1209, E1210, E1219, E1417/E1417M and E1444). This specification also includes reporting and performance
requirements for UV-A LED lamps.
1.2 These tests are intended to be performed only by the manufacturer to certify performance of specific lamp models (housing,
filter, diodes, electronic circuit design, optical elements, cooling system, and power supply combination) and also includes limited
acceptance tests for individual lamps delivered to the user. This test procedure is not intended to be utilized by the end user.
1.3 This practice is only applicable for UV-A LED lamps used in the examination process. This practice is not applicable to
mercury vapor, gas-discharge, arc or luminescent (fluorescent) lamps or light guides (for example, borescope light sources).
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
3
2.1 ASTM Standards:
E165/E165M Practice for Liquid Penetrant Examination for General Industry
E709 Guide for Magnetic Particle Testing
E1208 Practice for Fluorescent Liquid Penetrant Testing Using the Lipophilic Post-Emulsification Process
E1209 Practice for Fluorescent Liquid Penetrant Testing Using the Water-Washable Process
E1210 Practice for Fluorescent Liquid Penetrant Testing Using the Hydrophilic Post-Emulsification Process
E1219 Practice for Fluorescent Liquid Penetrant Testing Using the Solvent-Removable Process
E1316 Terminology for Nondestructive Examinations
E1348 Test Method for Transmittance and Color by Spectrophotometry Using Hemispherical Geometry
E1417/E1417M Practice for Liquid Penetrant Testing
1
This test method is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.03 on Liquid
Penetrant and Magnetic Particle Methods.
Current edition approved Sept. 1, 2015July 1, 2018. Published September 2015July 2018. Originally approved in 2015. Last previous edition approved in 2015 as
E3022-15. DOI: 10.1520/E3022-1510.1520/E3022-18
2
The use of LED lamps for penetrant examination may be covered by a patent. Interested parties are invited to submit information regarding the identification of
alternative(s) to this patented item to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee,
which you may attend.
NOTE: ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard
are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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