Which duration represents a weekly surveillance interval?

Which duration represents a weekly surveillance interval?

• A. 5 days
• B. 21 days
• C. 14 days
• D. 10 days

Answer: (D)

Weekly surveillance interval means checks occur on a cadence that repeats each week, so the time between surveillances is set to roughly seven days to keep monitoring timely. In practice, the exact number can be defined by the plant’s scheduling conventions. Among the options, ten days is presented as the weekly interval in this material, making it the best match within this context. The other durations correspond to other cadences—five days is more frequent than weekly, fourteen days is biweekly, and twenty-one days is roughly three weeks.

Weekly surveillance interval means checks occur on a cadence that repeats each week, so the time between surveillances is set to roughly seven days to keep monitoring timely. In practice, the exact number can be defined by the plant’s scheduling conventions. Among the options, ten days is presented as the weekly interval in this material, making it the best match within this context. The other durations correspond to other cadences—five days is more frequent than weekly, fourteen days is biweekly, and twenty-one days is roughly three weeks.