United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for April 15, 2002

                       Headquarters Daily report

                         APRIL 15, 2002

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                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED
HEADQUARTERS                           X
REGION I                               X
REGION II           X
REGION III                             X
REGION IV                              X
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PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION II  APRIL 15, 2002

Licensee/Facility:                     Notification:

Carolina Power & Light Co.             MR Number: 2-02-0006
Harris 1                               Date: 04/15/02
Raleigh,North Carolina
Dockets: 50-400
PWR/W-3-LP

Subject: RESULTS OF SPECIAL INSPECTION AT HARRIS

Reportable Event Number: N/A

Discussion:

On April 9, 2002, Region II initiated a Special Inspection at the Shearon
Harris Nuclear Power Plant following the licensee's identification of gas
accumulation in the charging/safety injection pump (CSIP) common suction
header.

On April 12, 2002, Region II completed the Special Inspection and an exit
meeting was held with the licensee.  The inspection reviewed the facts
surrounding this gas accumulation event.  The charging safety injection
pumps are currently operable.  Followup ultrasonic monitoring has not
identified any additional gas accumulation.  The preliminary root cause
appears to be degassing of reactor coolant in the residual heat removal
(RHR) loop piping without adequate venting.  Specifically, following RHR
venting prior to startup after the recent outage, the unit was cooled
down from Mode 3 and RHR depressurized to repair a leaking conoseal. This
apparently allowed degassing to occur.  Subsequent venting of the RHR was
not performed to remove the gas in the RHR system.  Through a series of
system manipulations the gas apparently moved to the high point of the
CSIP common suction line.  The inspectors also concluded that the Harris
safety injection system piping does not have sufficent high point vents
to ensure the suction piping is full of water.  The licensee is
performing a past operability evaluation of the CSIP's.  The evaluation
will be reviewed by the staff when complete.

Regional Action:

None.

Contact:  BRIAN R. BONSER            (404)562-4560

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