• Presentations:– Andy Wallo: DOE, discussion of status of DOE O 458.1, IFB – James Liu: SLAC Measurement Protocols

• IFB, field instruments and surface survey , proxy, PK, MDA < ANSI SLS – Keith Welch: Material Release Protocols JLAB

• TBD available, also for liquids and solids– Bob Fairchild: LBNL Metals Moratorium

• IFB; if destined for disposal, material is held on-site pending transfer to local landfill

– Don Gregory: Release of Materials at ORNL • Activation calculation and/or PK, NaI and Pancake survey• Authorized Limits process for samples

– Steve Butala: ANL, An Alternative Disposal Method for Activated PCB Capacitors• Used RESRAD and PK to establish authorized limits and release PCB-laden

transformers as hazardous, rather than mixed, waste• Discussions:

• Develop a DOE Technical Standard to ensure consistent approach across the complex

• MARSAME approach with ANSI levels• Site specific technical bases based on AOI and PK

1

Metal Moratorium Break Out Session

• Endorsement of IFB for release of materials – Materials that are IFB are not subject to further regulatory

requirements• Need to have technical basis to support unrestricted

release of metals:– Process knowledge– Define field measurement methods– Quantify MDAs for isotopes of interest– ∑i (MDAi / SLi) 1– Consideration of MARSSIM/MARSAME methodology

• Decision at Site Office level

2

Metal Moratorium Break Out Session

– Release criteria• IFB, specific activity levels lower than ANSI SLs

– Field instruments• NaI, plastic scintillators for volumetric

– Field measurement methods • Direct scan, discrete points, detecting "proxy" isotopes

– Graded approach for measurement • PK, or 100% surveys• MARSSIM/MARSAME considerations

– Additional verification measurements • Several labs have portal gate monitors• Field gamma spectroscopy, analytic sampling when warranted

– Record management• Some labs have a release permit/authorization/form

– Impact to each site from metal moratorium

3 Questionnaire on Measurement protocols

4

Field Instruments

SLAC Volumetric radioactivity - Ludlum 2241 or 18 meter with 4402 detector (1” NaI) or equivalent Surface contamination - Ludlum 2241 with GM pancake or equivalent (e.g., TBM P15).

Fermilab For volume activation, Bicron Analyst with 1.5” X 1.5” NaI probe or Eberline E140 or Ludlum 17704 Frisker Survey Instrument (Pancake GM tube) are used. The Bicron is preferred for detecting volume activation but magnetized materials and stray static magnetic fields from spectrometers, etc. preclude their use in some locations.

Smear samples are also taken as indicated by other reasons.

JLab Volumetric activity: Thermo (Bicron) Microrem with low energy option. Plastic (tissue equivalent) scintillator.

Surface contamination: Pancake GM detector with any appropriate count rate meter.

SNS Volumetric – 2x2 NaI probe with ASP-2e electronics. Surface Contamination – Pancake probe with Bicron Surveyor M

LBNL Volumetric radioactivity: Ludlum 16 meter with 44-2 detector (1” NaI) or equivalent is required. Typically use Ludlum 2221 meter with 44-20 (3” NaI) detector.

Surface contamination: Ludlum 2224 meter with 43-89 (alpha/beta phoswich) or equivalent.

BNL Ludlum 19 micro-R with 1” NaI detector.LANSCE Eberline

o E600-SPA-3 (2X2” NaI)o ESP-1-HP-260 (GM)

Argonne Eberline ASP2e meter with PG2 2mm x 2 inch probe (mini-FIDLER)

• Goal: Consistent measurement protocols to support unrestricted release of concrete and metals

• Questionnaire on Measurement protocols• Discussions of issues, show-stoppers and

problems, and solutions that are expected or have occurred in the material release process of each lab

• Deliverable: Benchmark report

5

ASW 2010 Workshop Expected Outcome