[All_jlau] Changes to Radiological Status of Hall B at JLab

[deborah magaldi]

*Important Change in Radiological Status of Hall B* - taking place today

Please note that the radiological posting level of Hall B will be 
changing today, August 22, 2012.  The hall is currently posted as a 
Radiologically Controlled Area (RCA) and Radioactive Material Area 
(RMA).  Due to the RCA, the current requirement for unescorted entry is 
Radiation Worker-I training and a dosimeter.  By close of business 
today, the status will be down-posted to remove the RCA designation for 
the general area of the hall.

The hall will remain posted as an RMA.  The training requirement for 
unescorted entry will change to GERT (General Employee Radiological 
Training) (same as unescorted access to Jefferson Lab's accelerator 
site).  Personnel dosimetry will not be required in the general areas of 
Hall B.  Some isolated areas within the hall will remain posted as RCAs, 
so please be watchful of postings as conditions are subject to change.  
The beam tunnels leading into the hall and downstream to the beam dump 
will also remain posted as RCAs.

Several radiological requirements remain in place in the hall.  As a 
radioactive materials area, the hall may contain low-level radioactive 
material, and may house radioactive material storage cabinets and other 
containers.  Any items stored in such a container or tagged as 
radioactive material are not to be handled by non-radiation workers.  In 
addition, all materials that were present in the hall during 
experimental operations must be cleared for removal by qualified 
Radiation Control (RadCon) staff.

To contact RadCon for clearance of material or for any questions about 
this change, please call the RadCon duty phone, at 757-876-1743.

This message is being sent on behalf of Jefferson Lab's Radiation 
Control group.

Regards,
Deb Magaldi
Jefferson Lab
Public Affairs
757-269-5102
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