ML19274C661
| ML19274C661 | |
| Person / Time | |
|---|---|
| Issue date: | 10/01/2019 |
| From: | Adelaide Giantelli NRC/NMSS/DMSST |
| To: | |
| RAKOVAN L/NMSS/MSST | |
| Shared Package | |
| ML19274C654 | List: |
| References | |
| Download: ML19274C661 (5) | |
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Nuclear Regulatory Commission Risk-Informed Source Security Requirements Adelaide Giantelli Source Management & Protection Branch Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission
General Thoughts on Risk 2
What can go wrong?
How likely is it?
What would be the consequences?
High Probability, High Consequence.
An expedition to Mount Everest has a high probability of serious consequences, such as a fatal fall, frozen extremities, or illness related to the altitude.
As a result, the overall risk is considered to be very high.
Low Probability, High Consequence.
A skydiving accident, in which the parachute fails to open, can also have severe consequences (including fatality).
However, the risk is acceptable to many people because using the proper safety precautions can adequately reduce the probability of an accident. As a result, the overall risk is considered to be moderate.
High Probability, Low Consequence.
A unicyclist has a relatively high probability of falling. However, the consequences of such an accident are relatively minor. The unicyclist usually lands on his or her feet or, at worst, tumbles forward.
Thus, even though the probability of falling is high, the consequences are so minor that the overall risk is low.
3 Development of Risk-Informed Security Requirements Category 2 Category 3 if used maliciously in a radiological dispersal device or a radiological exposure device?
and what should/can we do to prevent it?
A.
Reasonable assurance of adequate protection B.
Absolute protection (zero risk)
What can go wrong?
How likely is it?
What would be the consequences?
Source security requirements are an optimized mix of risk-informed and prescriptive requirements.
Part 20 establishes radiation protection standards for all radioactive materials o
§ 20.1801 Security of stored material. The licensee shall secure from unauthorized removal or access licensed materials that are stored in controlled or unrestricted areas.
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§ 20.1802 Control of material not in storage. The licensee shall control and maintain constant surveillance of licensed material that is in a controlled or unrestricted area and that is not in storage.
Part 37, establishes requirements for the physical protection of Category 1 and Category 2 quantities of radioactive material o
§ 37.49 Monitoring, detection, and assessment. a) Monitoring and detection. (1) Licensees shall establish and maintain the capability to continuously monitor and detect without delay all unauthorized entries into its security zones. Licensees shall provide the means to maintain continuous monitoring and detection capability in the event of a loss of the primary power source, or provide for an alarm and response in the event of a loss of this capability to continuously monitor and detect unauthorized entries.
o
§ 37.53 Requirements for mobile devices. Each licensee that possesses mobile devices containing category 1 or category 2 quantities of radioactive material must: (a) Have two independent physical controls that form tangible barriers to secure the material from unauthorized removal when the device is not under direct control and constant surveillance by the licensee; and (b)
For devices in or on a vehicle or trailer, unless the health and safety requirements for a site prohibit the disabling of the vehicle, the licensee shall utilize a method to disable the vehicle or trailer when not under direct control and constant surveillance by the licensee. Licensees shall not rely on the removal of an ignition key to meet this requirement.
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Examples of Risk-Informed Security Requirements
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Thank you!