Design Features
Passive Engineered features installed in the Vaults to ensure safe, subcritical conditions are maintained during a design basis seismic event.
What are the Vault Storage Racks?
Operations that involve critical assembly operations, radiography, and handling or transfer of radioactive material
What is HOT OPERATIONS Mode?
Access is limited to minimize the potential inadvertent operation of a Critical Assembly with personnel present locally
What is Key Control?
Assembly Cells, Bays, Control Room, Storage Vaults and Shipping/Receiving, Experiment Counting, and the Corridor that are within the DAF structure.
What is a Building?
USQ
What is an Unreviewed Safety Question
Used to move NUCLEAR MATERIAL in containers to and from the mezzanine.
What is the VRC (Vertical Reciprocating Conveyor)?
All radioactive materials above RESIDUAL QUANTITIES are removed from the BUILDING
What is COLD STANDBY Mode?
This Specific Administrative control reduces the potential for human error in locations where SNM is handled
What is the Two-Person Rule?
The hands-on manipulation of fissile material with the deliberate intent to significantly increase the NEUTRON MULTIPLICATION
What is Handstacking?
LCO
What is a Limiting Condition for Operation?
Provide structural support to maintain certain fissile material components/containers in a favorable configuration during a design basis earthquake.
What is a Vault Centering Fixture?
In the DSA but no longer used
What is FSS IMPAIRED Mode?
This SAC reduces the likelihood and magnitude of fires in the vaults
What are Combustible Loading Limits?
RADIOACTIVE MATERIAL is in a configuration where the material is at rest and not involved in ACTIVE OPERATIONS
What is Safe and Stable (Configuration)?
MAR
What is Material At Risk?
Protect equipment or personnel within the BUILDING from an HEVR outside of the BUILDING as well as confinement of radioactive material released by an accident inside an assembly cell
What is a Special Door Interlock?
Radioactive Material is in a SAFE AND STABLE CONFIGURATION
What is WARM STANDBY Mode?
This process helps present significant accidental radiation exposure to workers by verifying that all personnel have exited the Assembly Cell before initiation of an remote operations of the Critical Assembly
What is the In-Cell Sweep Procedure?
The steps listed in each requirement that are required to be PERFORMED when the specified SAFETY LIMIT or LIMITING CONTROL SETTING or LIMITING CONDITIONS FOR OPERATION are not met.
What is an ACTION?
RTO
What is a Radiation Test Object?
These special containers are intended to reduce the likelihood of impacts to this material
What is Plutonium Oxide?
The OPERATIONAL STATES of an AFFECTED BUILDING with respect to the ability to perform the intended mission.
What is a MODE?
This SAC requires that the shipping and receiving BUILDING exterior doors stay closed during the time when part of the building radiological MAR is transported in the corridor
What is the Shipping/Receiving Building Exterior Door Closure Requirement?
A documented analysis of the extent to which a nuclear facility can be operated safely with respect to workers, the public, and the environment, including a description of the conditions, safe boundaries, and HAZARD controls that provide the basis for ensuring safety.
What is a DSA (Documented Safety Analysis)?
SAC
What is a Specific Administrative Control?