ML17305A312

Advises That Response to NRC Bulletin 88-004, Potential Safety-Related Pump Loss Fullfilled Requirement & Action Considered Complete Contingent Upon Commitment

ML17305A312
Person / Time
Site:	Palo Verde
Issue date:	10/11/1989
From:	Chan T Office of Nuclear Reactor Regulation
To:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
References
IEB-88-004, IEB-88-4, TAC-69949, TAC-69950, TAC-69951, NUDOCS 8910250222
Download: ML17305A312 (8)

Text

gp,R RECy r'

C

~ +g C,

op O

IIA

.~c 0

V/

4p Cy

+~

qO

+**++

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 October 11, 1989 Docket Nos. 50-529, 50-529 and 50-530 Mr. William F.

Conway Executive Vice President Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034

SUBJECT:

RESPONSE

TO NRC BULLETIN 88-04:

POTENTIAL SAFETY-RELATED PUMP LOSS (TAC NOS.

69949, 69950, and 69951)

On May 5, 1988, the NRC staff issued NRC Bulletin 88-04, "Potential Safety-Related Pump Loss."

The bulletin requested the evaluation of all safety-.

related pumps for 1) pump-to-pump interaction during miniflow operation tl.at could result in dead-heading of one or more of the pumps and 2) the adequacy of the minimum flow bypass lines with respect to damage resulting from operation and testing in the minimum flow mode.

The bulletin also requested that within 60 days of receipt of the bulletin, licensees provide a written response that (a) summarizes the problems and the systems affected, (b) identifies the shor t-term and long-term modifications to plant operating produres or hardware that have been or are being implemented to ensure safe plant operations, (c) identi-fies an appropr iate schedule for long-term resolution of this and/or other significant problems that are identified as a result of this bulletin, and (d) provides justification for continued operation particularly with regard to General Design Criterion 35 of Appendix A to Title 10 of the Code of Federal Regulations (10 CFR Part 50), "Emergency Core Cooling" and 10 CFR 50.46, "Acceptance Criteria for Emergency Core Cooling Systems for Light Water Nuclear Power Reactors."

Additionally, the staff requested that within 30 days of completion of the long-term resolution actions, that licensees provide a written response describing the actions taken.

By letter(s) dated July 8, 1988, August 29, 1988, and September 21, 1989, you responded to Bulletin 88-04.

Your response provided the information requested in a, b, c, and d above.

Your response also described the long-term resolution actions and identified a completion date of second quarter 1990 for those actions.

This fulfillsyour requirement in responding to Bulletin 88-04.

Therefore we consider this action complete contingent upon your coIImIitment.

89 i0250>~+. -0)831 P DR ADDCIi'):%'4048 G

A'~

1gl

Mr. William F.

Conway October ll, 1989 As discussed in Bulletin 88-04, you should document and maintain for at least two years an evaluation of your actions in responding to the bulletin.

These records may be subject to future auditing.

Sincerely, original signed by DISTRIBUTION NRC II Local PDRs PD 5 Reading MVirgilio AD/Region JLee RBevan OGC EJordan BGrimes ACRS (10)

Terence L. Chan, Senior Project Manager Project Directorate V

Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation ohio I

[POTENTIAL SAFETY RE QEDj PD5/DRSP 0

PD5/D P

MDavis j 1~

TChan:sg 10/I[ /89 10/)( /89 D:

SP ghton

~0/(I/89

lb Il 3

l

i Nr. William F.

Conway October ll, 1989 As discussed in Bulletin 88-04,, you should document and maintain for at least two years an evaluation of. your actions in responding to the bulletin.

These records may be subject to future auditing.

Sincerel A5~

T rence L. Chan, Senior Project Manager Pr ject Directorate V

Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation

0 0

Hr. William F.

Conway Arizona Nuclear Power Project Palo Verde CC:

Arthur C. Gehr, Esq.

Snell 5 Wilmer

.3100 Valley Center Phoenix, Arizona 85073 Charles R. Kocher, Esq. Assistant Council James A. Boeletto, Esq.

Southern California Edison Company P. 0.

Box 800

Rosemead, California 91770 Hr. Tim Polich U.S. Nuclear Regulatory Commission HC-03 Box 293-NR Buckeye, Arizona 85326 Regional Administrator, Region V

U. S. Nuclear, Regulatory Comnission 1450 Haria Lane Suite 210 Walnut Creek, California 94596 Hr. Charles B. Brinkman Washington Nuclear Operations Combustion Engineering, Inc.

12300 Twinbrook Parkway, Suite 330 Rockville, Maryland 20852 Hr. Charles Tedford, Director Arizona Radiation Regulatory Agency 4814 South 40 Street Phoenix, Arizona 85040 Chairman Haricopa County Board of Supervisors 111 South Third Avenue Phoenix, Arizona 85003

II v~

Jl J