| Building
Number/Name: Date prepared: Responsible Contractor: Contact: |
3745-B October 3, 2002 FH-CP Kenneth Jaten |
PAST OPERATIONS
Beryllium brought in facility: YES
Form of beryllium: SOLID
Period of beryllium operations (dates): Start: 1949 End:
Post-1982
Location(s) in facility that contained beryllium materials:
Optical shop
Description of beryllium activities: The 3745-B Building was built in 1949 as a shielded laboratory facility for positive ion accelerator research. Disc targets were plated with beryllium using bell jars under high vacuum and the beryllium was vaporized onto platinum discs. Beryllium rods (wrapped in plastic) were brought into the building in 1982.
Building monitoring data summary: According to a 1962 memo, five swipe samples were collected but no data was provided in the report. According to a 1982 memo, two additional swipe samples were collected in 1982 that were reportedly below detection limits, but detection limits were not reported.
Personnel monitoring data summary:
None identified.
Specify Engineering/Administrative controls used during
operations: None identified.
Maximum Estimated Past Be exposure: LOW
CURRENT OPERATIONS
Building still present: YES
Beryllium present: None.
Current building occupancy/activity: This building has been
unoccupied since December 1995.
2000 Characterization:
Statistical beryllium wipe sampling was conducted in this facility on May 12, 2000 to characterize residual beryllium levels from past operations. All 29 samples taken had less than the public release limit of removable beryllium (0.2 µg/100 cm2).Maximum Estimated Current Be exposure: For staff performing building walkthroughs, exposure to beryllium would be minimal. For non-routine activities, such as breaching facility systems, exposure levels are unknown.
Basis for above information: Stone
and Webster report.
Comments, including any additional information needed (specify):
Levels of contamination are unknown.
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