ML20005G636

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Confirms Conditions,Specified in 891220 Ltr Re HPI Flow Balancing.Each HPI Line Has Operable HPI Flow Rate Indicator of 0 to 500 Gpm.Operating Procedures Will Be Revised to Reflect Mods Made in Refuel 8
ML20005G636
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 01/10/1990
From: Beard P
FLORIDA POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
3F0190-06, 3F190-6, NUDOCS 9001220041
Download: ML20005G636 (3)


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. C O R PO R AT IO N January 10,.1990  !

'3F0190-06 i

U. S. Nuclear Regulatory Commission Attnt Document Control Desk 1 Washington, D.C. 20555 i

Subject:

Crystal River Unit 3 [

Docket No. 50-302 ~

L Operating License No. DPR-72 Confirmation of Conditions for  ;

High Pressure Injection (HPI) Flow Balancing

Dear Sir:

i Florida Power Corporation (FPC)- is submitting this letter to confirm each of the conditions specified in the December 20, 1989 '

s NRC. letter are being or will be met. The items below correspond to the numbers in the NRC letter.

1., Each;HPI line has an operable HPI flow rate indicator of 0 to  !

500 gpm. The-wide range instrument strings were verified to  :

be- operable in May- 1989 - to satisfy Technical Specification j requirements for the- HPI System. FPC considers this  !

-operability verification adequate to confirm the wide range instrumentation will remain operable until CR-3 is shutdown p for refueling in March 1990. HPI instrumentation equipment ,

malfunctions observed by plant personnel will be corrected in a timely manner.

2.

As stated in previous letters on this HPI flow subject, FPC selected the flow range of 0 to 200 gpm because this range .

-would allow the operators to detect and properly respond to  !

p -

small breaks. The o to 500 gpm indicator accuracy would not -

be acceptable when HPI flow is less than 190 gpm. The l accuracy' of the O to 200 gpm HPI flow instrumentation is sufficient to meet the needs for operator control. The error associated with the o to'200 gpm instrumentation is 18 gpm E

, between- 85 and 200 gpm,110 gpm between 65 and 85 gpm, and 115 gpm between 45 and 65 gpm.

j. 9001220041 90013o r t.

D {DR ADOCK 05000302 PDC <

00 -

p \0 I POST OFFICE BOX 219

  • CRYSTAL RIVER, FLORIDA 326294219 + (904) 563-2943 ,

V A Florida Progress Company j b; ,

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January 10, 1990 3F0190-06 Page 2

3. The O to 200 gpm instrumentation strings were functionally tested to verify the instrument strings would respond with the proper indication to allow the operators to balance HPI flows under pipe break scenarios. The instrumentation strings were also tested by Surveillance Procedure SP-169E, Makeup System Instrumentation Calibration, to verify that the strings met L '

the accuracy requirements and therefore could be declared operable.

4. Each licensed. operator was trained on the use of the revised instrumentation strings. Operators were advised of the reasons for the modification, the actions required to be taken by an operator, and the procedures to be used for this instrumentation. The training discussed the various accident symptoms which could occur and the respective actions that are to be taken for each symptom, including the case stated in the December 20, 1989 letter. Three plant operating procedures were revised to reflect the modified instrumentation.

Those i procedures are:

a. EP-290 Inadequate Core Cooling
b. AP-380 Engineered Safeguards Actuation
c. VP-580 Plant Safety Verification Procedure
5. As stated in your letter, the o to 200 gpm indicators will meet safety-related criteria, with the exception of redundancy, prior to power operation following Refuel 7.
6. The modified HPI instrumentation to be installed in Refuel 8 will meet Class 1E and Regulatory Guide 1.97 requirements with clarification of the following two areas: i Recording - FPC stated in our December 15, 1989 letter that  :

-trend information is not needed to support the operator function. The R.G. 1.97 requirement to install control room recorders will be satisfied by capturing the information on the SPDS/ RECALL system for the four 0 to 200 gpm signals. The SPDS/ RECALL System provides trending information if needed.

Hardwire (strip chart) recording will not be used.  !

Redundancy - Follo~ wing Refuel 8, each HPI line will have two safety-related instrumentation strings powered from different Class 1E vital busses. One string will be O to 200 gpm range indication; one will be O to 500 gpm range indication. This approach meets the intent of Regulatory Guide 1.97.

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i January 10, 1990 3F0190-06 Page 3-

6. (Continued)  :

Plant operating procedures will be revised, as necessary, to ,

reflect the modifications made in Refuel 8. Operator training j on the use of any modified equipment will be completed before  !

power operation following Refuel 8.

Sincerely, ld/\

P. M. Beard, Jr.

Senior Vice President Nuclear Operations PMB/JWT/ sdr ',

xc: Regional Administrator, Region II ,

Senior, Resident Inspector ,

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