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  | ![]() DOE-HDBK-1130-98 
Module 9: Radioactive Contamination Control 
Instructor's Notes 
D. 
Access Controls for High and Very High 
Radiation Areas 
There are different controls that are used to prevent 
the inadvertent entry or unauthorized access into 
Radiological Areas. The following identifies 
administrative and physical controls that are used 
for HRAs. 
EO4 State the administrative 
and physical controls for 
1. 
Administrative controls 
access to HRAs. 
The following are administrative controls that may 
be used to control access to HRAs. These are used 
in addition to physical controls. 
a. 
Formal radiological reviews. 
b. 
RWPs. 
c. 
Pre-job briefings. 
d. 
Procedures. 
e. 
f. 
Administrative control levels (ACLs). 
g. 
(Insert facility-specific information.) 
2. 
Physical controls 
EO4 State the administrative 
and physical controls for 
One or more of the following features should be 
access to HRAs. 
used for each entrance or access point to an HRA 
and shall be used for HRAs >1 rem in any one hour. 
It should be noted again that no controls shall be 
established in an HRA or VHRA that would prevent 
rapid evacuation of personnel. 
a. 
A control device that prevents entry or upon entry 
causes the radiation level to be reduced below that 
level defining an HRA. 
b. 
An automatic device that prevents use or operation 
of the radiation source. 
c. 
A control device that energizes a visible or audible 
alarm. 
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