E3022-18 Standard Practice for Measurement of Emission Characteristics and Requirements for LED UV-A Lamps Used in FluorescentPenetrant and Magnetic Particle Testing.
1.Scope
1.1 This practice covers the procedures for testing theperformance of ultraviolet A (UV-A)，light emitting diode(LED) lamps used in fluorescent penetrant and fluorescentmagnetic particle testing (see Guides E709 and E2297,andPractices E165/E165M, E1208,E1209,E1210,E1219,E1417/E1417M and E1444).2 This specification also includes report-ing and performance requirements for UV-A LED lamps.
1.2 These tests are intended to be performed only by themanufacturer to certify performance of specific lamp models(housing，filter，diodes，electronic circuit design,opticalelements, cooling system, and power supply combination) andalso includes limited acceptance tests for individual lampsdelivered to the user. This test procedure is not intended to beutilized by the end user.
1.3 This practice is only applicable for UV-A LED lampsused in the examination process.This practice is not applicableto mercury vapor，gas-discharge，arc or luminescent (fluores-cent) lamps or light guides (for example, borescope lightsources).
1.4 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.
1.5 This standard does not purport to address all of thesafety concerns，if any,associated with its use. It is the
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