Licensee reported via phone call of potential
overexposure of two employees to
carbon-14. The licensee indicated initial calculations showed approximately 2.5
Rem exposure.
Licensee followed up the phone call on November 7, 2003, after receiving urinalysis results. The initial calculations indicated internal whole body exposure to carbon-14 of 7976 milli Rem and 8976 milli Rem for two employees.
The 252 milliCuries carbon-14 was in a mixture of 221 micro liter benzene in a flame sealed glass ampoule which was being readied for shipment to a customer. The ampoule was wiped for contamination and placed on a counter outside of the fume hood for approximately 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Initially the ampoule was thought to be in the fume hood.
The ampoule was found to be leaking and 59 milliCuries of carbon-14 remained in the ampoule. The resultant loss into the lab was 193 milliCuries of carbon-14.
This is a preliminary report to be updated as information is received.
Person 1 received 7.976 Rem internal (CEDE) occupational.
Person 2 received 8.976
Rem internal (
CEDE) occupational.