Q45 — LHRA Controls
G2.3.13 (3.4)
Given:
• A Licensed Operator notices that a Locked High Radiation Area (LHRA) is unlocked and unmanned
In accordance with RP-AA-460 (Controls For High And Very High Radiation Areas), which ONE of the following completes the statements below?
After immediately notifying RP of the unmanned and unlocked LHRA, the Licensed Operator _(1)_ required to return to the area and maintain positive control until an RP representative arrives.
The dose rate for a LHRA is greater than a MINIMUM of _(2)_ mrem/hr @ 30 cm.
• A Licensed Operator notices that a Locked High Radiation Area (LHRA) is unlocked and unmanned
In accordance with RP-AA-460 (Controls For High And Very High Radiation Areas), which ONE of the following completes the statements below?
After immediately notifying RP of the unmanned and unlocked LHRA, the Licensed Operator _(1)_ required to return to the area and maintain positive control until an RP representative arrives.
The dose rate for a LHRA is greater than a MINIMUM of _(2)_ mrem/hr @ 30 cm.
A. _(1)_ IS / _(2)_ 100
B. _(1)_ IS / _(2)_ 1000
C. _(1)_ is NOT / _(2)_ 100
D. _(1)_ is NOT / _(2)_ 1000
▶ Show Answer & Explanation
✓ B. Correct. For Part 1 and IAW RP-AA-460 Precautions and Limitations, "Any individual who determines that a HRA, LHRA, or VHRA is not being controlled adequately shall notify RP immediately (while maintaining positive control over the area to the extent possible during this notification period). After notifying RP, the individual shall return to the area and maintain positive control of the area, without personal endangerment, until an RP representative arrives." For Part 2 and IAW RP-AA-460, the dose rate for a LHRA is greater than a MINIMUM of 1000 mrem/hr @ 30 cm.
✗ A. Incorrect but plausible. Part 1 is correct. For Part 2, greater than 100 mrem @ 30 cm is the definition for a High Radiation Area. Consequently, the candidate could incorrectly determine that the dose rate for a LHRA is greater than a MINIMUM of 100 mrem/hr @ 30 cm.
✗ C. Incorrect but plausible. For Part 1, the candidate could incorrectly conclude that the only requirement in RP-AA-460 for finding an unlocked and unmanned LHRA is to immediately notify RP. For Part 2, greater than 100 mrem @ 30 cm is the definition for a High Radiation Area. Consequently, the candidate could incorrectly determine that the dose rate for a LHRA is greater than a MINIMUM of 100 mrem/hr @ 30 cm.
✗ D. Incorrect but plausible. For Part 1, the candidate could incorrectly conclude that the only requirement in RP-AA-460 for finding an unlocked and unmanned LHRA is to immediately notify RP. Part 2 is correct.
Ref: NOS05PROCED-08 (Use and Control of Procedures) | LO: NOS05PROCED-08 LO 4 | Source: Modified Bank | Cognitive: Lower
Connections
- Related procedures: RP-AA-460 — Controls for High and Very High Radiation Areas
- Related systems: Radiation Monitoring
- Related exam: 2018 NRC Written Exam