ML20212E584
| ML20212E584 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 02/26/1987 |
| From: | Watson R CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CON-NRC-542 HO-870371-(), HO-870371-(0), NUDOCS 8703040382 | |
| Download: ML20212E584 (3) | |
Text
-____
r 3
CD&L
- Carolina Power & Light Company HARRIS NUCLEAR PROJECT P. O. Box 165 New Hill, NC 27562 FEB 2 61987 File Number:~ SHF/10-13510E Letter Number: HO-870371 (0)
NRC-542 Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555 centlemen:
In reference to your letter of February 3, 1987, referring to I.E.
Report RII:
50-400/86-96, the attached is Carolina Power & Light Company's reply to the violation identified in Enclosure 1.
It is considered-that the corrective actions taken are satisfactory for resolution of the item.
Thank you for your consideration in this matter.
Very truly yours, R. A. Watson Vice President Harris Nuclear Project RAW skm i
Attachment cc: Messrs.
B. C. Buckley (NRC)
C. Maxwell (NRC-SHNPP)
Dr. J. Nelson Grace (NRC) 8703040CMB2 B70226 PDR ADOCK 05000400 G
PDR o\\
/C'N/ \\
,/
\\
MEM/HO-8703710/ PACE 1/OSI
y
,Q f Attachment to CP&L Letter ~ of Response to NRC I.E. Report RII:
50-400/86-96 n
Reported Violation:
Technical Specification 6.8.1.a and Regulatory Guide 1.33',
Appendix A, Paragraph 8 require implementation'of surveillance and test procedures.
Contrary to the 'above, test procedure 1-9102-S-02 and surveillance procedure'OST-1026 in use on December 29, 1986, did not adequately account for changes in the measured parameters leading to errors in the sign and magnitude of leakage from the Reactor Coolant System.
This is a Severity Level IV violation (Supplement I).
Denial or Admission and Reason for The Violation:
~
The violation is admitted. Three errors were found in the leak rate calculation for reactor coolant leakage. The calculations are shown on Attachment II of OST-1026 (Reactor Coolant System' Leakage Evaluation Daily Interval Modes 1-2-3-4) and Data Sheet 10.2 of.1-9102-S-02'(Reactor Coolant System Leak Rate Test). The identified errors were:
(1) The pressurizer volume calculation did not correctly account for density change of the coolant from pressurizer temperature / pressure conditions to atmospheric conditions, (2) The RCS volume changes due to T change calculation did not correctly account for densi$y change of the 8
coolant from RCS temperature / pressure conditions to atmospheric conditions, and (3) The identified leakage rate determined from EST-204 (Reactor Coolant System Isolation Valve Leak Test),
although conservative for the purpose of that surveillance test, was a non-conservative correction to OST-1026.
i Corrective Steps Taken and Results Achieved:
(1) The pressurizer volume change calculation (Step 4.5 of OST-1026, Attachment II) has been revised to include the appropriate density correction factor.
(2) The RCS volume change due to T,yg change calculation (Step 4.6 of OST-1026) has been revised to include a density correction factor obtained from a new 3
correction factor table and graph included in OST-1026 as Attachment III.
(3) The identified leakage rate determined from EST-204 (Step 3.2 of OST-1026) has been deleted from the calculation. These corrections were included in OST-1026, Rev. 2, by advance changes 2/1 and 2/2. OST-1026 is performed daily. The results obtained have been consistently within acceptance criteria and have shown " positive" out leakage which is the expected direction-of leakage.
MEM/110-8703710/PAGE 2/OSI
_I.
Corrective-StepsTaken'andResults' Achieved:-(continued)I j
_ c As documented in' Test. Exception 1~of 9102-S-02, the'above corrections were applied.to:the-leakLrate calculated in that-procedure,resulting'in a " positive" calculated leakage of.44 gpm.
Corrective Steps Taken to Avoid'Further Noncompliance:
Advanced-changes 2/1;and 2/2 of.0ST-1026,-Rev. 2, described above-have corrected this violation for the long term.. These. changes
~
g were' approved January _8, 1987, and February 9, 1987,..
respectively. Test Exception 1 to.9102-S-02, completed _ January 8,-
1987,1 closed _the corrective action for the power ascension program.
Date When' Full Compliance Was Achieved:
Full compliance was achieved on February 9, 1987, with completion sof the actions as stated'above.
4 e
e e
s f
D r* r.
L
(
MEM/HO-8703710/PAGE 3/OS1
,, _, _., - _. -, _ _ _ _ _.. _ _ _ _, _. _,, _ _. -. - -.