II,
CURRENT RADIOLOGICAL SAFETY CRITERTA
A.
Radiological Safety Criteria for Occupational Exposures at the Nevada Test Sit
"In light of the recent National Committee on Radiation Protection
recommendations concerning maximum permissible radiation exposures
to man, we recommend the following criteria for whole-body external
gamma exposures incurred onsite by personnel at the Nevada Test
Site:
a.
:
<A maximum of 3 r within a 13-week period.
This
period may encompass any 13 consecutive weeks at NTS,
b.
A maximum of 5 r total within a period of one year,
As in the past we agree that the prerogative of permitting exposures
greater than these limits for exceptional cases lies only with the
Test Manager and test Director,--—"
letter from Dr, Charles L. Dunham
to Mr. James E, Reeves, dated
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February 20, 1957