Status of Activities for

Lawrence Berkeley National 

Laboratory and the 

Stanford Linear Accelerator Center

Stuart Hinnefeld

Director

National Institute for Occupational Safety and Health

Division of Compensation Analysis and Support

February 2012

Oakland, CA
Activity on the LBNL Issues

 Add more background information to the site 

description section

• Will make this section in the TBD more comparable with 

what is done for other sites

• Responds to issues 1 and part of 5 and 13
Activity on the LBNL Issues—cont. 

 Perform a data adequacy and completeness 

evaluation on the internal and external dosimetry

data 

• Demonstrate that the monitoring program in place was 

adequate for the exposures at the site and that there are 

no significant amounts of data missing

• Expand on how unmonitored workers are assigned doses 

and if coworker models are needed

• Results of this analysis will be issued in a white paper

• Responds to item 2, 4, 11, and 12 on the issues matrix –

some of it also may tie into issue 1 (relating monitoring 

activities with operations)
Planned TBD Updates

 Provide additional information to the NIOSH 

response to issue 3 about Super S uranium and 

thorium

• Addresses type S classification of the ICRP 66 lung model 

versus the older ICRP 30 class Y classification

• Responds to issue 3 of the issues matrix

• Will be incorporated into the next TBD revision and the 

updated issues matrix
Planned TBD Updates—cont. 

 Review information in table 6-5 based on the 

reference suggested in the NIOSH response and 

historic source term information and update Table 

6-5 for all years and all major accelerator operations 

(Issue 5)

 Review table information based on reference 

suggested in the NIOSH response and historic 

source term information and update Table 6-5 for 

all years and all major accelerator operations (Issue 

5)
Planned TBD Updates—cont. 

 Revise Table 6-4 in next TBD (Issue 6)

 Reference TIBs listed in NIOSH response in next TBD 

revision (Issue 7)

• DCAS TIB 10, Rev 4: Best Estimate External Dose 

Reconstruction for Glovebox Workers 

• DCAS TIB 13, Rev 1: Selected Geometric Exposure Scenario 

Considerations for External Dose Reconstruction at Uranium 

Facilities

 Add information on Co-60 irradiator—change guidance 

for the radionuclide assignment for internal dose from 

beta contributors (Part of issue 13)
Dose Reconstruction Activity for LBNL

NIOSH OCAS Claims Tracking System 

Information available as of February 22, 2012

 LBNL claims referred to NIOSH 199

 LBNL claims remaining at NIOSH 7

 LBNL claims pulled without a 

 completed dose reconstruction 33

 Dose reconstructions completed for claims 159

that meet the class definition 

Cases with a PoC > 50% 34

Cases with a PoC < 50% 125
Dose Reconstruction Activity for SLAC

NIOSH OCAS Claims Tracking System 

Information available as of February 22, 2012

 SLAC claims referred to NIOSH 33

 SLAC claims remaining at NIOSH 0

 SLAC claims pulled without a 

 completed dose reconstruction 2

 Dose reconstructions completed for claims 31

that meet the class definition 

Cases with a PoC > 50% 3

Cases with a PoC < 50% 28