Draft IEC Standards: Intense Light Sources

AORD- NPL

Draft IEC Standards: Intense Light Sources

Bill Davies Swansea NHS TrustMarina Khazova Health Protection Agency

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

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

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

AORD- NPL Draft IEC Standards: Intense Light Sources

Links to AORD: employees

PeopleAnimals EXPOSURE

DIRECT

INDIRECT

ACCIDENTAL

INTENTIONAL

REFLECTED

REMITTED

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

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)

AORD- NPL Draft IEC Standards: Intense Light Sources

LEDsFlash-lamp

Worm 1- Scope

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

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%

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!

AORD- NPL Draft IEC Standards: Intense Light Sources

Worm 5- Protective eyewear

• no standards• broadband issues• welding goggles• automatic goggles

AORD- NPL Draft IEC Standards: Intense Light Sources

Worm 6- Exposure levels, ELVs

• laser standards in appropriate• CIE S009:2002

AORD- NPL Draft IEC Standards: Intense Light Sources

Worm 7- Home use

•IEC TC 60601 and the home

AORD- NPL Draft IEC Standards: Intense Light Sources

Worm 8- Labels

• Labels always a contentious issue

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

AORD- NPL Draft IEC Standards: Intense Light Sources

The end of the beginning

Thank you for listening

Time for questions?