closure project manager - Document Request - U.S. Department of ...

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AOL 3
BASIS
(cont'd)
AOL 4
BASIS:
Revision 1
September I999
Metal waste container vents are credited in the evaluation of postulated container
explosion accident scenarios. Although not explicitly credited, the venting of metal
waste containers aids in the venting of gases from the containers in response to
postulated facility fire accident scenarios, further reducing the likelihood of container
lid loss due to external heating.
In order to restrict unvented metal waste containers from the BUILDING 991
COMPLEX, verification of every container brought into the facility for compliance
with the requirement is specified. The compliance verification can occur at time of
receipt or at the container originating facility prior to shipment by examination of
container. In addition, a general verification of metal waste container vents is
specified for identification of unvented metal was.te containers during facility
operations and tours. This latter verification is only expected to examine containers
while personnel pass through the waste container storage area or perform activities in
the waste container storage area.
Container segregation means separation of the unvented metal waste container from
other compliant containers. The separation is expected to be five or more feet, if
possible, to prevent container interaction.
The term "high radioactive material container" will be used in the following
discussion to signify POC and waste containers that are non-compliant with this
AOL. POC and waste containers that are brought to the BUILDING 991 COMPLEX
are assayed, prior to receipt, to determine radioactive material loading of the
container. This AOL applies to POC and waste containers that are to be stored in the
BUILDING 991 COMPLEX.
The FSAR Safety Analysis made the following assumption dealing with LLW
containers:
Contain no more than 0.5 grams (WG Pu equivalent) in metal drums and no more
than 3 grams (WG Pu equivalent) in wooden or metal crates.
The FSAR Safety Analysis made the following assumption dealing with TRU waste
containers:
Contain no more than 200 grams (WG Pu equivalent) in metal drums and no
more than 320 grams (WG Pu equivalent) in metal boxes.
The FSAR Safety Analysis made the following assumption dealing with POC
containers :
Contain no more than 1,255 grams (WG Pu equivalent) and no more than
200 grams (fissionable material).
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Building 99 1 Complex FSAR
Appendix A
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