Bulletin 75-08: PWR Pressure Instrumentation
BULLETIN 75-08 Date: December 11, 1975
PWR PRESSURE INSTRUMENTATION
DESCRIPTION OF CIRCUMSTANCES:
During a recent review of plant heatup and cooldown records at an operating
nuclear Power plant, it was determined that continuously recorded data was
not available to verify adherence to the temperature/pressure limitations
specified in the technical specifications. Such information is necessary for
determining trends and for evaluating pressure transients, as shown during
the reviews of recent rapid pressure increases of the reactor coolant system
(RCS) at several plants and the overpressurization of the RCS at another.
ACTION REQUESTED OF LICENSEES:
Please provide the following information in writing to this office within 30
days after receipt of this Bulletin:
1. Provide a description of reactor coolant system temperature and
pressure instrumentation which allows you to verify adherence to the
temperature/pressure limitations in your technical specifications.
2. If you do not have the capability to continuously record reactor
coolant system temperature and pressure during heatup and cooldown as
well as during power operation, describe what action you have taken or
plan to take to provide assurance that the temperature/pressure
limitations in your technical specifications are met.
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