Draft IEC Standards: Intense Light Sources
Transcript of Draft IEC Standards: Intense Light Sources
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AORD- NPL
Draft IEC Standards: Intense Light Sources
Bill Davies Swansea NHS TrustMarina Khazova Health Protection Agency
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AORD- NPL Draft IEC Standards: Intense Light Sources
And God said “ Let there be Light”, and there was light Genesis 1; 3
In the beginning 1
Natural SourcesOUT
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AORD- NPL Draft IEC Standards: Intense Light Sources
In the beginning 2 : problems
• injuries to patients• outputs not equivalent• filter issues affected output• wide range of build quality• current laser standards not applicable• current eyewear standards not applicable
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AORD- NPL Draft IEC Standards: Intense Light Sources
In the beginning 3 : New Work
• precedence : IEC 60601-2-22IEC 60825-TR 8
• Nov 05 proposed new work• Jan 06 submitted proposal• Aug 06 first draft 60601-2-57
60825-TR 11• Nov 06 3rd Edn 60601-1• Dec 06 discussed WG4• Mch 07 first CD
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AORD- NPL Draft IEC Standards: Intense Light Sources
Links to AORD: employees
PeopleAnimals EXPOSURE
DIRECT
INDIRECT
ACCIDENTAL
INTENTIONAL
REFLECTED
REMITTED
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AORD- NPL
Draft IEC Standards: Intense Light Sources
INTENSE
SCOPE
EYEWEAR
MEASUREMENTS
NATIONALISSUES
TRAINING
HOME USELABELS
ELVs
No worms were injured in the making of this photograph
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 1- Scope
non- laser sources
INCLUDED
• flash lamps• leds
NOT INCLUDED• sunbeds• neonatal phototherapy• devices with existing standards
(Intended for diagnosis or therapy)
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AORD- NPL Draft IEC Standards: Intense Light Sources
LEDsFlash-lamp
Worm 1- Scope
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 2- Intense
Device incorporating one or more non-laser sourcesof optical radiation of the wavelength range180nm to 3000nm and intended for creating photobiologicaleffects in humans and animals
PLUS
A system of RISK classification• exempt• low risk group• moderate• high
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 3 - Measurements
• Output Power/ energy• Uniformity• Spectral content• Temporal content
UNCERTAINTYLIMITS
• Accidental • Intentional
• Traceable
J.cm-2
• Changes in output
20%
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 4 – National Issues
• Optical Radiation Protection Advisor• We don’t do it like that!! LSO• Consensus!
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 5- Protective eyewear
• no standards• broadband issues• welding goggles• automatic goggles
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 6- Exposure levels, ELVs
• laser standards in appropriate• CIE S009:2002
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 7- Home use
•IEC TC 60601 and the home
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AORD- NPL Draft IEC Standards: Intense Light Sources
Worm 8- Labels
• Labels always a contentious issue
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AORD- NPL Draft IEC Standards: Intense Light Sources
The beginning of the end: National Comments
• Manufacturer 60601-2-57• User: IEC TR 60825-16
UK National CommitteeEPL 76 ;Chair J O’Hagan
UK comments
IEC TC76: WG4AUGUST 2007
Bill DaviesMarina Khazova
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AORD- NPL Draft IEC Standards: Intense Light Sources
The end of the beginning
Thank you for listening
Time for questions?