ML19308D234: Difference between revisions

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                                                                                                         -    s,f ggg                                              16 February 1977
                                                                                                         -    s,f
              *.    "
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ggg                                              16 February 1977
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['      b' ' L ,i'#[
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f 3-0-3-a-1                  :                      -s  .g c u m . e. .... Pow r                                  CS-77-30                  # .,    p%e      n. , 7,377,,. a tg    u.:                    w
f 3-0-3-a-1                  :                      -s  .g c u m . e. .... Pow r                                  CS-77-30                  # .,    p%e      n. , 7,377,,. a tg    u.:                    w
                                                                                                 ''N ELy)%:N?% 17 )
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==Dear Mr. Moseley:==
==Dear Mr. Moseley:==


                                                                                                                                  .
This report is submitted in accordance with Technical Specification 6.9.1                                    ;
This report is submitted in accordance with Technical Specification 6.9.1                                    ;
and Regulatory Guide 1.16, Revision 4, Section 2.a. (4), as a written                                        "
and Regulatory Guide 1.16, Revision 4, Section 2.a. (4), as a written                                        "
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There were no adverse conse'quences.
There were no adverse conse'quences.
Very en21y yours, 1
Very en21y yours, 1
FLORIDA POWER CORPORATION
FLORIDA POWER CORPORATION D _L u W 1
                                                                          .
D _L u W 1
'
W. P. Stewart                                                i Director, Power Production                                  .
W. P. Stewart                                                i Director, Power Production                                  .
1 EWP/feh I
1 EWP/feh I

Latest revision as of 12:45, 1 February 2020

Forwards RO-77-12
ML19308D234
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 02/16/1977
From: Stewart W
FLORIDA POWER CORP.
To: Moseley N
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML19308D235 List:
References
CS-77-30, NUDOCS 8002270691
Download: ML19308D234 (1)


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                                                                                                       -    s,f ggg                                              16 February 1977

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r3 Mr. Norman C. Moseley, Director Docket No. Office of Inspection and Enforcement License #DPR-72 U. S. Nuclear Regulatory Commission Licensee Event Report 77-12 230 Peachtree St., N.W., Suite 818 Atlanta, Georgia 30303

Dear Mr. Moseley:

This report is submitted in accordance with Technical Specification 6.9.1  ; and Regulatory Guide 1.16, Revision 4, Section 2.a. (4), as a written " Fourteen (14) Day Report. While in Mode 5 (Cold Shutdown), during cleanup of the Reactor Coolant System, Boron concentration was diluted by 230 ppm constituting a reacti-vity insertion of 2.6% AK/K. V Because of the Reactor Coolant cleanup operation in progress, special Boron analyses were being performed at intervals of approximately thirty (30) min-utes to identify Boron changes and, during this time period, inverse count rate ratios were continually monitored to assure safe conditions. Shutdown margin was maintained at least 8.51% AK/K, assuming the highest worth con-trol rod withdrawn. Actual shutdown margin (highest worth rod inserted) was greater than 11% AK/K. The cause of this event was improper insertion of mixed bed vice cation resin to demineralizer. ' Corrective action has been taken as indicated on the Licensee Event Report. There were no adverse conse'quences. Very en21y yours, 1 FLORIDA POWER CORPORATION D _L u W 1 W. P. Stewart i Director, Power Production . 1 EWP/feh I

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