Nvlap dosimetry accreditation
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NVLAP Dosimetry Accreditation. Organization of Agreement States – August 2012. National Voluntary Laboratory Accreditation Program (NVLAP). NVLAP is: A system for accrediting laboratories found competent to perform specific tests or calibrations NVLAP is not :

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NVLAP Dosimetry Accreditation

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Nvlap dosimetry accreditation

NVLAP Dosimetry Accreditation

Organization of Agreement States – August 2012


National voluntary laboratory accreditation program nvlap

National Voluntary Laboratory Accreditation Program (NVLAP)

  • NVLAP is:

    • A system for accrediting laboratories found competent to perform specific tests or calibrations

  • NVLAP is not:

    • An operator of a certification program

    • A certifier of products or personnel

    • A certifier of test data


Nvlap regulatory requirement

NVLAP– Regulatory Requirement

15 CFR Part 285 – NVLAP

  • Department of Commerce regulation

  • NIST administers NVLAP

  • Established in 1976


Nvlap accreditation programs

NVLAP Accreditation Programs

TESTING-Ionizing Radiation Dosimetry - Radiation Detection Instrument Testing

Carpet/Electric Motors/ Lighting/Thermal Insulation/ Fasteners-Metals/EMC-Telecommunications/IT Security/ Asbestos/Acoustics/Construction/ Biometrics/Health IT


Nvlap accreditation

NVLAP Accreditation

  • Applicant laboratories – any testing laboratory

    • Government/national testing laboratories

    • Manufacturer’s testing laboratories

    • Independent testing laboratories

    • Domestic testing laboratories

    • Foreign testing laboratories


Nvlap accreditation1

NVLAP Accreditation

  • Accrediting body - ISO/IEC 17011, Conformity assessment – General requirements for accreditation bodies accrediting conformity assessment bodies

  • Accredited laboratories - ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories


General accreditation criteria

General Accreditation Criteria

  • NIST Handbook 150, NVLAP Procedures and General Requirements

    • Ensures consistency with international standards and guidelines, specifically ISO/IEC 17025.

    • Chapter 4, Management Requirements, and Chapter 5, Technical Requirements, are verbatimwith ISO/IEC 17025.


Program specific requirements

Program-specific Requirements

  • Program-specific Handbooks

    • NIST Handbook 150-4, Ionizing Radiation Dosimetry

    • Consensus standards


Dosimetry standards

Dosimetry Standards

  • Consensus standards

    • ANSI N13.11-2009, Personnel dosimetry Performance – Criteria for Testing (whole body)

    • ANSI N13.32-2008, Performance Testing of Extremity Dosimeters (extremity)


Dosimetry proficiency testing

Dosimetry Proficiency Testing

  • Different radiation categories (see ANSI N13.11 and ANSI N13.32)

    • Accident photons

    • Photons/photon mixture

    • Beta

    • Photon/beta mixtures

    • Neutron/photon mixtures


Dosimetry proficiency testing1

Dosimetry Proficiency Testing

  • Proficiency testing (ANSI N13.11 and ANSI N13.32)

    • Submit dosimeters for proficiency testing – every 2 years

    • Test in categories that best represent the services provided


Nvlap accreditation2

NVLAP Accreditation

  • On-site assessment every two years

    • Quality management system

    • Technical capabilities

  • NVLAP Assessors

    • Technical experts (industry, government, academia)

    • Trained in assessment techniques


Nvlap on site assessment

NVLAP On-site Assessment

  • Assessor resources are on NVLAP website

    • publically available

    • no surprises for lab

  • Laboratories resolve all nonconformities to maintain accreditation


Dosimetry accreditation

Dosimetry Accreditation

  • Dosimeters are NOT accredited

    • NVLAP does not certify any product

  • Dosimetry processors are accredited

    • Scope of accreditation lists the processing equipment, dosimeters, holders and radiation categories


Dosimeters

Dosimeters

  • Film

  • TLDs (thermoluminescent dosimeters)

  • OSLs (optically-stimulated luminescence)

  • EPDs (electronic personal dosimeters)

  • Instadose (built-in memory chip)


Dosimetry processing

Dosimetry Processing

  • Some dosimeters are not “processed”, but are electronically “read”

  • Processed

    Film / TLDs / OSLs

  • Not processed

    EPDs / Instadose


Nvlap accreditation3

NVLAP Accreditation

  • All dosimeters types (processed and not processed) have to be submitted for proficiency testing

    • Dosimeters are pulled from existing inventory and not specially selected

    • Dosimeter has to “pass” PT in the radiation categories for which lab seeks accreditation


Nvlap accreditation4

NVLAP Accreditation

  • Accredited laboratory has to have control over data obtained from dosimeter

    • Clients cannot manipulate/change data used to report dose

  • Instadose data goes directly to accredited laboratory

    • Fully automated transfer of data


Summary dosimetry processing accreditation

Summary –Dosimetry Processing Accreditation

  • Any laboratory may apply

    • Government/national testing laboratories

    • Manufacturer’s testing laboratories

    • Independent testing laboratories

    • Domestic testing laboratories

    • Foreign testing laboratories


Summary dosimetry processing accreditation1

Summary –Dosimetry Processing Accreditation

  • Scope of Accreditation

    • Dosimetry system

      • Dosimeter, badge holder, readers

    • Radiation categories for which the lab seeks accreditation

      • ANSI N13.11(whole body)

      • ANSI N13.32 (extremity)


Summary dosimetry processing accreditation2

Summary –Dosimetry Processing Accreditation

PLEASE REMEMBER

  • Dosimeters are not accredited.

  • Laboratories are accredited.


Contact info

Contact Info –

Betty Ann Sandoval

NIST/NVLAP

http:www.nist.gov/nvlap

301-975-8446

[email protected]


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