radiological signs

[Lester.Slaback@nist.gov]

The 'sameness' (i.e., visual similarity) of different radiological signs
makes them rather ineffective for warning regular
workers in an area of a change in conditions.  The DoE weekly summary
describes a contamination event resulting directly from this problem
(Summary 97-25).  Many larger facilities have such a large number of signs
spinkled about that new ones 
get lost in the multitude.  Simply asserting that everyone should 
carefully read every sign before proceeding is ignoring human nature
(i.e., conflicts with good human engineering practices to  put in fancy
terms).

Do any of you have special procedures or special signs to
highlight a new or changed condition that you might like to share?

-- 
the above are the personal musing of the author,
and do not represent any past, current, or future
position of NIST, the U.S. Government, or anyone else
who might think that they are in a position of authority.
NBSR Health Physics
NIST
Gaithersburg, MD 20899
301 975-5810
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Lester.Slaback@nist.gov
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