Which statements about temporary changes are true?

• A. Temporary changes should have a prescribed time limit
• B. Renewal of temporary change time limits must be reviewed to assure that adequate safeguards are being maintained
• C. Neither statement is true
• D. Both statements are true

Answer: (D)

Temporary changes introduce a deviation from normal operation and can alter the risk landscape, so they must be tightly controlled. Having a prescribed time limit ensures there’s a defined window in which the change is allowed, preventing it from lingering as if it were permanent and forcing a timely risk re-evaluation. When that time limit comes up for renewal, you review the change again to confirm that the existing safeguards still cover the current conditions, that procedures and training remain adequate, and that any new information or evolving process factors are addressed. If the renewal shows safeguards are still appropriate, operation can continue safely; if not, adjustments are made or the change is reverted. Because both establishing a time limit and performing a renewal review are essential to keeping risk under control during temporary changes, this option is the best answer.