Which event requires changing the lock combination?

Which event requires changing the lock combination?

• A. When the lock is initially placed in use
• B. On the first day of every month
• C. When the building's security alarm is reset
• D. When the lock is cleaned

Answer: (A)

When a lock is first placed in use, you change the combination to establish control from day one. Setting a new code at installation prevents anyone who might know the factory or previous owner's default from gaining access, and it ensures only authorized personnel have the current combination. Once the lock is in active use, changes should follow security policy—typically triggered by personnel changes or periodic rekeying—not by routine maintenance events. The other options aren’t about who should know the code: changing monthly isn’t a standard requirement for most locks, resetting a building alarm is a separate system event, and cleaning doesn’t inherently involve altering access credentials.

When a lock is first placed in use, you change the combination to establish control from day one. Setting a new code at installation prevents anyone who might know the factory or previous owner's default from gaining access, and it ensures only authorized personnel have the current combination. Once the lock is in active use, changes should follow security policy—typically triggered by personnel changes or periodic rekeying—not by routine maintenance events.

The other options aren’t about who should know the code: changing monthly isn’t a standard requirement for most locks, resetting a building alarm is a separate system event, and cleaning doesn’t inherently involve altering access credentials.