ML17312A914

Summary of 960801 Predecisional Enforcement Conference W/ Arizona Public Svc Co in Arlington,Tx to Discuss Apparent Violations Identified in Insp Repts 50-528/96-10, 50-529/96-10 & 50-530/96-10.List of Attendees Encl

ML17312A914
Person / Time
Site:	Palo Verde
Issue date:	08/12/1996
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
NUDOCS 9608160082
Download: ML17312A914 (81)

See also: IR 05000528/1996010

Text

~p,S >KCII1p

o~

IP ++*<<+

UNITEDSTATES

NUCLEAR REGULATORY COMMISSION

REGION IV

611 RYAN PLAZA DRIVE, SUITE 400

ARLINGTON,TEXAS 76011 8064

AUG l 2 l996

PREDECISIONAL ENFORCEMENT CONFERENCE

SUMMARY

Licensee:

Facility:

License No.:

Docket:

EA No.:

Arizona Public Service

Company

Palo Verde Nuclear Generating Station

NPF-41.

NPF-51.

NPF-74

50-528:

50-529:

50-530

96-203

On August 1. 1996, representatives

of the Arizona Public Service

Company met

with NRC personnel

in the Region

IV office located in Arlington, Texas, to

discuss

the apparent violations identified in NRC Inspection Report 50-528;

529; 530/96-10.

The predecisional

enforcement

conference

was held at the

request of Region IV.

The licensee

presented

a summary of the causes

for the apparent violations and

their corrective actions.

The attendance list and the licensee's

presentation

are attached to this summary.

In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice,"

a copy of

this summary

and its enclosures will be placed in the

NRC Public Document

Room.

Attachments:

1.

Attendance List

2.

Licensee Presentation

cc w/Attachment

1:

William L. Stewart.

Executive Vice

President,

Nuclear

Arizona Public Service

Company

P.O.

Box 53999

Phoenix.

Arizona

85072-3999

Mr. Steve Olea

Arizona Corporation Commission

1200

W. Washington Street

Phoenix,

Arizona

85007

9e08160082

9bOSa2

PDR

ADOCK 05000528

8

PDR

Arizona Public Service

Company

-2-

Douglas

K. Porter,

Senior Counsel

Southern California Edison

Company

Law Department.

Generation

Resources

P.O.

Box 800

Rosemead.

California

91770

Aubrey V. Godwin, Director

Arizona Radiation Regulatory Agency

4814 South 40 Street

Phoenix,

Arizona

85040

Chairman

Maricopa County Board of Supervisors

ill South Third Avenue

Phoenix,

Arizona

85003

Angela

K. Krainik, Manager

Nuclear Licensing

Arizona Public Service

Company

P.O.

Box 52034

Phoenix,

Arizona

85072-2034

John

C. Horne, Vice President

Power Supply

Palo Verde Services

2025 N. Third Street.

Suite 220

Phoenix,

Arizona

85004

Mr. Roy P.

Lessy. Jr.

Akin. Gump. Strauss,

Hauer

II Feld, L.L.P

1333

New Hampshire Avenue,

N.W.

Suite 400

Washington.

D.C.

20036

t

I

Arizona Public Service

Company

bcc to

DHB (IE45)

bcc distrib. by RIV w/Attachments

1

8 2:

L. J. Callan

DRP Director

Branch Chief (DRP/F.

WCFO)

Senior

Project Inspector

(DRP/F,

WCFO)

Branch Chief (DRP/TSS)

Leah Tremper

(OC/LFDCB,

HS:

TWFN 9E10)

G ~ F. Sanborn,

EO

W.

LE Brown,

RC

J.

Lieberman.

OE,

HS:

7-H5

OE:EA File.

HS: 7-H5

Resident

Inspector

DRS-PSB

HIS System

RIV File

H.

Hammond

(PAO.

WCFO)

DOCUMENT NAME:

G:KEBNPVENFCON.FPNSUHMARY.PHQ

To receive copy of document, Indicate In box: "C" = Copyw't enciosures

"E" ~ Copy with encjosures "N" ~ No copy

08/

/9

08/

/96

RIV:RI:EB

C:EB

PHQualls/1mb

CAVanDe

AD:DRS

KEBrockma

08/I2/96

Arizona Public Service

Company

-3-

bcc to

DMB (IE45)

bcc distrib.

by RIV w/Attachments

1

8 2:

L. J. Callan

DRP Director

Branch Chief (DRP/F,

WCFO)

Senior Project Inspector

(DRP/F,

WCFO)

Branch Chief (DRP/TSS)

Leah Tremper

(OC/LFDCB, NS:

TWFN 9E10)

G.

F. Sanborn.

EO

W. L. Brown,

RC

J.

Lieberman,

OE,

NS:

7-H5

OE:EA File,

NS: 7-H5

Resident

Inspector

DRS-PSB

NIS System

RIV File

N.

Hammond

(PAO,

WCFO)

DOCUMENT NAME:

G:XEBXPVENFCON.FPXSUMMARY.PMQ

To receive copy of document, Indicate In box: "C" ~ Copyw't enctosures

"E" ~ Copy with enctosures "N"~ No copy

RIV:RI: EB

PMQualls/1mb

08/

/96

C:EB

CAVanDe

08/

/9

AD:DRS

KEBrockma

08/>2/96

I

ATTACHMENT 1

ATTENDANCE LIST

~,

PREDECISIONAL ENFORCEMENT CONFERENCE ATTENDANCE

LICENSEEtFACILITY

DATE/TIME

CONFERENCE LOCATION

EA NUMBER

Arizona Public Service

Company

Palo Verde

August

1,

1996,

1 p.m.

Training Conference

Room,

Region

IV

EA 96-203

LICENSEE REPRESENTATIVES

NAKE (PLEASE PRINT)

ORGANIZATION

TITLE

WM~l~

lp8i~/'i~

Jan

A.

V

AAd~ P <~lo

eS

BP

I+>>-;/ s -:~h

APg

4a.

En ~~r~bcen~n

LP/. ~le

Pldl.

i+c

>~" ~

~ 4 4=.

~ AtZ,~A t,\\/t/4k~~<

c'P

>He

(i

x

~

+gem~ ~~+~ p~crki &L DESCRY

+vt=vtgo f

gg

~t.

e D.i

hledblt

56

F~4i~e-'0 -heel Pir 6.

)ec kniccJ2 %a~e,nod ~ ~'~'t~ Lf

S<~ +sr.s~t~

rc v~6-+~ YC

Page

o

I>>

'REDECISIONAL ENFORCEMENT CONFERENCE ATTENDANCE

LICENSEE/FACILITY

DATE/TIME

CONFERENCE LOCATION

EA NUMBER

Arizona Public Service

Company

Palo Verde

August

1,

1996,

1 p.m.

Training Conference

Room,

Region

IV

EA 96-203

NRC REPRESENTATIVES

NANE (PLEASE PRINT)

5gvdk>>

+Bi>!>~

'F06 Cc~/k~<

R.~ c'i(m~3

<e~ ~el no&

P~i&C Q~~+

~ /

u+LcS..

ORGANIZATION

/L AC/ fcEG i.4u i V

TITLE

era>(iA c-'4 ie+

Ej izmce'i~(<<f.C~Rv e(~

Tc/C,g ~

ria. e-C~~

~/CJOY

5t Dr+ ~/

ACTUAL Ik

5r. Mes('da

Sj7 flcZ, ~ ~ ghgj

PARI/

C7+ c,

'PAo

NR c- lRLU

~+ ~~0%'~~K AAv~ae.

P~cmR

Wm~p~e~g

Page

of

I

,k

A

ATTACHHENT 2

LICENSEE PRESENTATION

I

Inspection Report 96-10

PVNGS Unit 2 Fire Event

Predecisional Eriforcement Conference

August 1, 1996

Arizona Public Service Com an

~ -

e

~

-

~

~ ~

~

s ~

4 4

~

L

e

I

~

~ ./

<gI.O V tag+

~ ~

~ o.

~

~

A

~

0

L

yyAI.D Vtkg)~

~

I

Summary o 4 4 96

ire Event

1659:44

1700

1702:41

1707

1714

1731

1805

4/6/96

1825

Fire

Alarm in

Zone 17

Firewatch

Verbally

Reported

Fire to SS

Fire

Alarm

in Zone

7B

Fire

Alert

Confirmation

Alert

Department

Declared

Both Fires

Terminated

Command

Extinguished

Established

1HR Phone

Call to NRC

on Design

Deficiency

"1

0

4

t

~

~

)

~

~

~

A

~

~

~

t ~

l

~

4

pal

Vteg)~

I

'

~ I

e

e

0

ai

0

I. ~

a )

) I

'1

Q"

0 VCiy+

lk,

~ j

I

~

~

~

e

0

II. Engineering Response

InitialResponse

Fire Event Circuit Description

Root Cause

Transportability Review

Corrective Actions

Initia Engineering Response

Immediate Assessment Activities

Development ofAction Plans

TemporaryModifications

Incident Investigation Plans

Inspection ofQuarantined Equipment

Installation ofTMOD

Root Cause ofFire

~

~

Lgj

A ~

I

~

I

~

~

~

-

~ ~

~

~ I

~ I

a

i

~ ~

~

I

0

i

0

~

~

~ '

~

0

~

~

A

)

~ ~

~

~

~

~

~

~

. ~

~

~

P'k@0

VCOO

I

Control Room Fire Transportability Review

Vertical Slice Scope

13.8kV SWGR 2E-NAN-S01

(5 CIRCUITS)

480V MCC

2E-PHA-M35

480V MCC

2E-NHN-M25

(4 CIRCUITS)

(15 CIRCUITS)

4160V SWGR 2E-NBN-S01

(7 CIRCUITS)

~) 480V LOADCENTER 2E-NGN-L03

Inverter

Battery

)(9 CIRCUITS)

125VDC CONTROL CENTER

2E-PKA-M41

100% Review of

Loadcenters

120VAC DISTRIBUTION

PANEL 2E-NHN-D25

(21 CIRCUITS)

Corrective Actions

Equipment

Descri tion

Emergency Lighting UPS and

Regulating Transformer

Scope

Add Fuse

Add Ground

Ikelocate Ground

Status

Complete

Emergency Lighting UPS

Battery Source Protection

Add Fuse

Mod Issued

In Process

Essential Instrumentation

Power Supplies

(NNN-D16)

Essential Instrumentation

Power Supplies

(NNN-D15)

Add Fuse

Add Fuse

Complete

Mod Issued

In Process

Heat Tracing Panels

Add Ground

Reconnect Leads

Mod Issued

In Process

~

~

~

~

e

~

~

~

a

~

~

~

i

~

~

~

'

~

~

~

0

~

~

~

~

~

~

~

~

~

~ 0

I

0 0

l

0

~

~

~

l

~

~

l

~

~

0

~

II j

~

e

~

4

1

Fire Protection Engineering Assessment

Defense-in-Depth Prevents Fire Propagation

Early Detection

Fire Containment

Rapid and Effective Emergency Response

Exposure Fire Potential

- Control Room Fire Cannot Initiate Exposure Fire in DC Equipment

Room Fire

DC Equipment Room Fire WillNot Result in Control Room Fire

Which Adversely Affects Safe Shutdown Capability

Both Trains Free from Fire Damage

Supplement

1 to LER 96-01, Revision 1

Safe Shutdown Capability Maintained

S ~ ~

r

~

~

~

I

~pl.O Vtsg)

Fire Protection Regulatory Requirements

>>

t

'ga>>: fhW

p.

10CFR50.48/QDC3

"Minimize Probability 8 Effects"

~ Establish Plan

~ Defense-in-Depth

~ Design Considerations

~ Provide Features

~

~

APPENDlX R, lll.o

Requirements Established

to Protect or Enable

Safe-Shutdown Equi p~":~',ni

APPEHDlX R

Addresses Specific Unresolved

Generic issues

'(llI.G, J, 0, L)

NWVCSVPVIAECONfPPT

(tOM)

0

l

a

I

~

'

I

~

I

I

I

~

~

I

I

~

. g

0 v 'ani

C

PVNGS Compliance

HWVCSVPVlAECONF PP1 (le)

10CFR50, Appendix R

Not a Safe Shutdown Circuit

Not an Associated Circuit

PVNGS Fire Protection Program

10CFR50.48/GDC 3

Electrical Design Issue

10CFR50 Appendix B, Criterion III

Electrical Design Issue

~

j

V. Conclusions

Postulated Exposure Fires

Appendix R Assessment

Fire Protection Enforcement Assessment

Non-Cited Criteria Assessment

Enforcement Considerations

j

j

~

j

I I

~

~

~

~

~

~

~

~ ~

~

~

~

~

~

~

L'VL

paLO vCOOp

Postu ate

Exposure Fire

Conclusions

Assumed Control Room Area Fire

WillNot Cause Fire in DC Equipment Room

Cable Sized to Withstand Fault Current

.Tested Cable Above Max Fault Current

Assumed DC Equipment Room Fire

Reasonable Assurance That Control Room Exposure Fire

Improbable

Non-Safe Shutdown, Non-Associated Circuits Involved

Fire Protection Program Features Effective

h'

I ~

~

~ I

pklO YCAy

't

Fire Protection En orcement

Assessment

Violationofa

Safe Shutdown Capability

Requirement~

No

MultipleViolations

Indicating Inadequate

Fire Protection

Program~

No

Does the Violation

Ilave Safety

Significance?

Only

Minor

Norr-

Cited

Violation

~ CR Fire m DC Equip. Room

- Nut Credible

~ No Recent Fire Protection

Violatiorrs'

No Safety-Related or Safe Shutdown

Equipment Chal!enged

~ DC Equip. Room Fire ~ CR

- SSD Capability Not Impacted

~ Complied with 10CFR50,

Appendix R, III.G

- Sat'e Shutdown Criteria and

Alternate Shutdown

Requirements Met

~ No Similar Previous Electrical

Design Deficierrcies

~ Electrical Design Deficiency

Occurred During Construction

- I'ires Were Contained In

Respective Enclosures

- Safe Shutdown Circuits and

Associated Circuits Not Involved

- Both Trains Free of Fire Damage

~ I'.ffective Fire Protectinr> Program

HVACSlJPVt4fCONF PPf

(LM)

4

s

~

~

>

0

0

gg0 VCA+y.

I

L

Non-Cite

Criteria Assessment

Minor Safety Significance

Self-I entifie

No Prior Opportunities

Pr':ompt Effective Corrective Actions

~ -

~

~

~ '

~

~

I ~

0

~

~

~

~

~ 0

~ -

~

~-

'ee

io

~

-

~

a

L

~ '

lee

~

~

~

ykLO VCOy~

e i

'e

I

S

i ~

4

4

j

g

a

I

,J

p

~

u 'L

~~

'

Ij.

>>'.-i< r(. "

. @i~

xl

-'p p,gO

J

~

4 0

~

~

~

~

~gy

'b 4Ceg) )

Plant

North

NOTE:

120'LEVATIONFLOOR

AND WALLAREA PARTIALLY

REMOVED FOR CLARITY.

I

I

r

I

I

rII

\\lr

I

r

UNIT2 CONTROL ROOM RRE EVENT

EQUIPMENT LOCATlON h. RACEWAYARRANGEMENT

s

4

~

2E-as'-D84

Control Building Elevation 140'

Essential Ughtlng

Distribution Panel

1-2/C ¹10

I gn Conduit)

Control Room

Emergency Ughts

1-2/C ¹10 gn Conduit)

I

I

I

I

I

I

IL

gn Conduit)

2-1/C ¹4/0

th

Hamonlc

Coit

+

2E~B-V02

)so)ation Transformer

1-2/C ¹2

M3217

MCC 2E-PHB-M32

Peels ~

I

Essential

Ughtlng

I

I

I

I

CB

Inverter

P

2345

1

I

I

I

I

I

I

I

I

Routed In condUit and tray(FOI)

2E40N-N02

Control Room Emergency

Ughtlng Unlnterruptabie

Power Supply

1-2/C ¹8

Battery

2E~~02

Unit 2 Control Room Fire Event

Electrical Schematic

Short Cliculted Small Conductors

~

Short Clrculted Large Conductors

Control Building Elevation 100'

r

lg

~ ~

I

Fire Protection Regulatory Requirements

,/

~

10CFR50 48/GDC3

"MinimizeProbability & Effects"

~ Establish Plan

~ Defense-in-Depth

~ Design Considerations

~ Provide Features

APPENDIX R, III.G

Requirements Established

to Protect or Enable

Safe-Shutdown Equipment

APPENDIX R

Addresses Specific Unresolved

Generic Issues

(Ill.G, J, 0, L)

Generic Letter 81-12 Associated Circuits

Fire Area

Fire Area

Fire Area

I

Associated Circuit

I

I

I

Train "B"Bus

Common Power Supply

I

Associated Circuit

I

Valve/Pump

Spuriously

Actuates

Spurious Operation Concern

I

I

I

I

I

5.

I

cn

I

I

Assoaated

Ctrcu<t

Common

Enclosure

Common Enclosure

~

V,

Photo I: Emergency Lighting UPS and Essential Lighting

Panel

IIIIi1I11i

II(Ill,~

IIIIII

3

J:

8yiZi

Photo 2:

UPS Rear View and Aisle

Photo 3: Regulating Transformer With Trays Above

"I/I

8t

l

e ~ ~

~ QV

J

Photo 4: Regulating Transformer Aisle

~ r

\\ ~ P

~ ~ 0 ~ 0

Itl~

~ ~

r

Photo 5: Regulating Transformer Front Internal View

l4

j 'w

g

~

Photo 6: Essential Lighting Panel Front Internal View

't

(,

(i.

.is

~ I

)

I(i

4a

~ M ~

)

Photo 7:

UPS Front Internal View

~

~/

~

'.I ~ ~

I

T

~)

)

r ~'1

r

r

.'c ~

~

'I&

.el.rp

~ I

r

>~i)" ~

.1>~'5~)

)tr)

Photo 8:

UPS Rear Internal View

N

(

I

Photo 9: Regulating Transformer 3rd Harmonic Choke

Damage

I

. ~

~

~

'hoto

10: Regulating Transformer 5th Harmonic Choke

Damage

Photo 11: Essential Lighting Panel Fire Damage

,I

J'hoto

12: UPS Rear Fire Damage

gc

(c

Photo 13: UPS Front Wire Bundle Damage

Photo 14: UPS Transfer Relay Damage

4~