ML20204F331

Forwards Discussion Items for 990323 Telcon

ML20204F331
Person / Time
Site:	Comanche Peak
Issue date:	03/23/1999
From:	Polich T NRC (Affiliation Not Assigned)
To:	Buschbaum D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
References
NUDOCS 9903250262
Download: ML20204F331 (3)

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To: Denny Buschbaum 254-897-5851 Fax #: 245-897-6573 From: Tim Polich, US Nuclear Regulatory Commission l

Date: March 23,1999  ;

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Pages: 3, including this cover sheet l' fax Discussion items for teleconference at 3:00 pm Eastern today.

From the desk of...

Tim Polich Project Directorate IV-1 U.S. Nuclear Regulatory Commission o } Q j][t1 MS O-13-H-3 Washington, DC 20555 tel: (301) 415-1038 fax: (301) 415-3061 e-mail: tjp1 @nrc. gov 9903250262 990323 PDR ADOCK 050004 6 P

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1. Provide a discussion that addresses the impact.of the proposed power uprate on the load, voltago, and short circuit values for all levels of the station auxiliary electrical distribution system. Include in this discussion any impact on the direct current power systems.

2. For the power uprated conditions, discuss environmental qualification for the safety related electrical equipment located in harsh environmental areas. For this safety-related electrical equipment, address the continued environmental qualification and the process for establishing qualification for any increased temperature, pressure, humidity, and radiation values.

3. Discuss and verify the assumptions for the station blackout analysis are valid for the power uprate conditions, particularly as they relate to issues such as the heat -up analysis, equipment operability, and battery capacity.

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4. ' Provide a discussion addressing the impact of the CPSES Unit 2 power uprate on the T turbine / generator, isophase bus, main transformers, and switchyards. Address in detail any non hardware changes for these items as a result of the CPSES Unit 2 power uprate.

5. Discuss the impact of the CPSES Unit 2 power uprate electrical conditions on the current grid stability and reliability analysis. Describe in this discussion, how the station continues to be in conformance with General Design Criterion 17 with CPSES Unit 2 at the power uprated electrical conditions.

6. Provide a pressurized thermal shock evaluation for the CPSES Unit 2 reactor vessel I before implementing the power uprate and after implementing the power uprate.

7. What !s the calculated end-of-life fluence in the current vessel design of CPSES Unit 27 What is the expected fluence for pressurized thermal shock with the revised design conditions / power uprate for CPSES Unit 27

8. Does the power uprate for CPSES Unit 2 change the cold leg temperature? If so, please provide detaEs.

9. Discuss whether the power uprate will change the type and scope of plant emergency and abnormal operating procedures. Will the power uprate change the type, scope, arid nature of operator actions needed for accident mitigation und will new operator actions be required?

10. Provide examples of operator actions that are particularly sensitive to the proposed  ;

increase in power level and discuss how the power uprate will effect operator reliability or /

oorformance. Identify all operator actions that will have their response times changed Oj

~because of the power uprate. Specify the expected response times before the power uprate and the new (reduced / increased) response times. Discuss why any reduced ./A.

operator response times are needed. Discuss whether any reduction in time available for y operator actions, due to the power uprate, will significantly affect the operator's ability to complete the required manual actions in the times allowed. Discuss results of simulator observations regarding operator response times for operator actiont that are potentially ]

sensitive to power uprate. i I

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11. Discuss all changes the power uprate will have on control room alarms, controls, and displays. For example, will zone markings on meters change (e.g., normal range, marginal range, and out-or-tolerance range)? If changes will occur, discuss how they will be addressed.

12. Discuss all changes the power uprate will have on the Safety Parameter Display System (SPDS) and how they will be addressed.

13. Describe all changes the power uprate will have on the operator training program and the plant simulator. Provide a copy of the post-modification test report (or test abstracts) to document and support the effectiveness of simulator changes as required by American National Standards institute /American Nuclear Society (ANSI /ANS) 3.5-19M, Section 5.4.1.

l Specifically, please propose a license condition and/or commitment that stipulates the following:

1 (a) Provide classroom and simulator training on all changes that effect operator j performance caused by the power uprate modification.

1 (b) . Complete simulator changes that are consistent with ANSI /ANS 3.5-1985.

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Simulator fidelity will be re-validated in accordance with ANSI /ANS 3.5- )

1985, Section 5.4.1, " Simulator Performance Testing." Simulator revalidation will include comparison of individual simulated systems and components and simulated integrcted plant steady state and transient performance with reference plant responses using similar startup test procedures.

(c) Complete all control room and plant process computer system changes as a result of the power uprate.

(d) Modify operator training and the plant sir,1ulator, as required, to address all related issues and discrepancies that are identified during the startup testing program.