Regional Basic Professional Training Course in Korea

Off‐normal conditions are easily recognizable to operators:
❙ 857 ❙
15. Operational Safety
− The number of alarms that are in an activated condition during normal
operation is minimized.
− The number of alarms arising per hour during start‐up of the plant is minimized
and does not exceed the operator's ability to respond.
− Defective or out of calibration instrumentation is clearly indicated to the
operator and tagged.
Arrangements and procedures for logging data, inking and dating recorders, etc.,
are correctly implemented for effective identification, distribution, and storage of
records.
Shift turnover is carried out in a structured and professional manner. The effectiveness of
shift turnover is enhanced by a written account of shift activities. In order to achieve
common agreement and set objectives, a shift briefing is conducted during turnover. The
turnover from one shift to the next gives particular attention to the transfer of all the
important information about the plant status, work in progress, and events during the
shift. Checklists, log books, recordings and messages are used and the operators perform
a walk down of the control panels.
Regular rounds through the plant are performed by the operators. Also shift supervisors
and authorized staff adopt the practice of regular plant walk‐throughs. All relevant areas
are covered within specified intervals. Areas with higher radiation levels have to be
observed at less frequent intervals or by remote means. The scope of the rounds covers
leakage, excessive vibration, unfamiliar noise, foreign parts, and deficiencies requiring
maintenance, cleaning, or other action. Special arrangements are necessary for areas that
cannot be entered during power operation. A system for documenting problems exists
which includes an evaluation for operability impact.