ML18033B509

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Insp Repts 50-259/90-26,50-260/90-26 & 50-296/90-26 on 900806-10.Violations Noted.Major Areas Inspected:Licensee Actions on Previous Insp Findings,Ros,Pipe Support Mods for Licensee Program & Welding
ML18033B509
Person / Time
Site: Browns Ferry  
Issue date: 08/29/1990
From: Blake J, Chou R, Kleinsorge W
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML18033B507 List:
References
50-259-90-26, 50-260-90-26, 50-296-90-26, NUDOCS 9009170118
Download: ML18033B509 (21)


See also: IR 05000259/1990026

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION II

101 MARIETTASTREET,'.W.

ATLANTA,GEORGIA 30323

Report Nos.:

50-259/90-26,

50-260/90-26,

and 50-296/90-26

Licensee:

Tennessee

ValTey Authority

6N 38A Lookout Place

1101 Market Street

Chattanooga,

TN

37402-2801

Docket Nos.:

50-259,

50-260

and 50-296

License Nos.:

DPR-33,

DPR-52,

and

DPR-68

Facility Name:

Browns Ferry 1, 2,

and

3

Inspection

Cond ct

.

August 6-10,

1990

Inspecto

Inspe tor

ho

eactor

nspector

M.

.

lei

rge

P. E., Reactor Inspector

ate

1gne

8w

Date Signed

.

B a e,

h>e

aterials

and Processes

Section

Engineering

Branch

Division of Reactor Safety

SUMMARY

ate

>gne

Scope:

This routine announced

inspection

was conducted in the areas

of licensee

actions.

on

previous

inspection

findings,

reportable

occurrences,

pipe

support

modifications for the licensee's

IEBs 79-02/79-14

program,

and welding.

Results:

Only one out of 33 pipe supports

was found to have

a minor discrepancy.

This

indicates

a significant improvement in quality, especially welding workmanship,

when compared to previous inspections.

In the

areas

inspected,

one violation was identified relating to inadequate

controls for welding.

No deviations

were identified.

(Paragraph

5.e.)

9009i7Oi is 9OOE30

PDR

ADDCK O5000259

A

Phil I

REPORT

DETAILS

Persons

Contacted

Licensee

Employees

R. Baird, Civil Engineer

  • R. Baron, Quality Control

(QC) Manager/Quality Assurance

(QA)

  • P. Carier, Site Licensing Manager
  • R. Cutsinger,

Lead Civil Engineer

  • J. Danier, Site Programs
  • J. Davenport, Site Licensing
  • D. Gruber, Maintenance

Programs

Manager

G. Guffey,

QC Mechanical

and Welding Inspector

G. Hunt,

QC Manager

  • W. Massie, Site Licensing Engineer
  • B. McKinney, Technical

Support Manager

  • M. Norrison, Nuclear Engineer - Compliance

And Licensing

  • P. Osborne,

Principal Civil Engineer

M. Reischman,

Field Engineer - Modifications

  • E. Ridgell, Compliance

and Licensing

  • P. Salas,

Compliance

and Licensing Supervisor

  • D. Smith,

Chemical

and Environmental

Manager

  • J. Smithson,

Engineers

Supervisor - Modifications

M. Strickland,

QC Inspector

D. Winchester,

Mechanical

Engineer - Modifications

Other

licensee

employees

contacted

during this

inspection

included

craftsmen,

engineers,

mechanics,

technicians,

and administrative

personnel.

NRC Resident

Inspectors

D. Carpenter,

Senior Resident

Inspector

C. Patterson,

Senior Resident

Inspector

W. Bearden,

Resident

Inspector

K. Ivey, Resident

Inspector

Licensee Actions on Previous

Inspection

Findings

a.

Violation

(Closed) Violation 50-260/89-57-01,

Pipe Support Discrepancies

This violation involved

discrepancies

found

during

two previous

inspections

of the support modification program. All items in the

violation and the

commitments

in the response

to the violation from

the licensee

had

been

reviewed

and closed

in Inspection

Report

Nos.

Cl,,

90-09

and 90-19 except

commitments

item 3.

This was

a commitment for

the

licensee's

Modification group

and

gC

department

to

perform

walkdowns of in-process

Engineering

Change

Notes

(ECNs)

and

Design

Change Notices

(DCNs) to ensure that there were

no further examples of

the conditions 'identified in the

NRC violation.

This effort was to be

performed

in parallel

with the

79-02/79-14

modification effort.

However,

the licensee's

internal

memorandum

R28

900306

901,

dated

March 7,

1990, deviated

from the above

commitment in that

gC would not

be required

to participate

in the effort. In response

to the

NRC

concerns

regarding

this

change,

the

licensee

issued

internal

memorandum

R80 900412

967,

dated

April 12,

1990,

to fulfill the

commitment.

The

memorandum

with the

attached

action

plan

and

checklist stated that:

1) Effective April 16,1990,

the Modification team composed

of a

responsible

engineer

and

a craft supervisor, will be assigned

to

perform the final walkdown for all completed

work plans;

2)

gC department will perform an independent

walkdown on

a randomly

selected

samples of completed final walkdowns performed

by the

Modification team;

and

3)

A 10 percent

sample of 79-02/79-14

work plans that were

completed

before April 16,

1990, will be jointly walked

down by

gC and Modifications.

The

inspectors

discussed

the violation

and

commitment

with the

licensee's

engineers

and

reviewed

the

information provided.

The

licensee's

gC

and

Modification

team

walked

down

10

percent

of

approximately

580 pipe supports

whose work plans

were completed before

April 16,

1990.

The Modification team

walked

down

100 percent of

about

1000 pipe supports

independently

or jointly with gC for the work

plans

completed after April 16,

1990.

gC performed

a walkdown of

about

200 supports

independently

or jointly with the Modification team

whose

work

plans

were

completed

after April

16,

1990.

The

Modification team

and

gC did not find

a major discrepancy,

but did

find 11 minor discrepancies

such

as dimension differences for support

locations, differences

between

the Bill of Materials

and

as installed,

component

configurations

and part

numbers

not matched,

old parts

not

removed,

snubber

settings

out of range,

loose

lock nuts,

rust in

components,

etc.

Based

on the licensee's

effort, progress,

and the

continuing commitment,

the violation is considered

closed.

Inspector

Followup Items

(Closed)

Item 50-259,260,296/87-33-04:

"Deficient Welds

In

EECW

Piping Discovered

During MIC Inspection"

This item was discovered

during

a review of activities related to the

Browns Ferry Microbiologically Induced

Corrosion

(MIC) Program.

As

the

result

of this

review

three

concerns

were identified

and

subsequently

documented

in NRC Report

No. 50-259,260,296/87-33-04,

one

of

which

was

discussed

and

closed

in

NRC

Report

No.

50-259,260,296/89-20.

Of the

two remaining

concerns,

the

one relating to weld defects,

is

addressed

in NRC Report

No. 50-259,260,296/88-35,

which indicated that

the resident

inspectors

had reviewed,

and

found acceptable

for fuel

load,

the licensee's

actions

relating to this concern.

It remained

open

pending

a

scheduled

review,

by

NRC staff

Nondestructive

Examination

(NDE) personnel,

of 95 Emergency

Essential

Cooling Water

(EECW)

piping

weld

radiographs.

This

review

was

completed

on

Oecember

23,

1988,

and

documented

in

NRC Office of Nuclear Reactor

Regulations

(NRR) Letter dated

March

1989 which closed this portion of

this followup item

.

The

remaining

concern

related

to the

adequacy

of the licensee's

proposed

program,

as discussed

in

NRC Report 50-259,260,296/89-20.

On

~October

24,

1989,

NRR issued

Supplement

1 to the Safety

Evaluation

Report

(SER)

on

The

Browns

Ferry Nuclear

Performance

Plan,

which

concludes,

in paragraph

3. 14,

that

the

licensee's

inspection

and

monitoring

program for MIC will provide

reasonable

assurance

that

those

systems will not lose their capability to perform their safety

functions

due

to

MIC damage.

A11

the

concerns

being

adequately

addressed

this matter is considered

closed.

(Open)

Item 50-260/89-16-09:

"System

Flow Loss

Oue to Corrosion of

Carbon Steel

Piping"

This item concerned

the licensee's

method for calculation of pressure

drop in carbon

steel

piping

and

the fact that the

method

did not

account

for

an

increase

in relative

roughness

of pipe internal

surfaces

as

the piping ages

(due to corrosion or other causes).

The

specific concern

was related to the Core Spray

(CS) system.

The licensee

indicated that the

CS system at

BFN contains

condensate

grade water

and is not susceptible

to internal corrosion other than

a

smooth

iron oxide film.

This film is not

a factor which would

adversely

affect

pressure

loss.

The licensee

concluded

that

the

methodology in the pressure

drop calculations

was appropriate.

Because

the

licensee

did

not

provide

any

basis

to support

the

statement

that

the

condensate

grade

water

would not affect

the

internal

roughness

of carbon steel

piping, This matter remains

open.

3.

Reportable

Occurrences

(92700)

The Licensee

Event Reports

(LERs) listed below were reviewed to determine

if the

information provided

met

NRC requirements.

The determinations

included

the verification of compliance with TS

and regulatory require-

ments,

and addressed

the adequacy

of the event description,

the corrective

actions taken,

the existence of potential

generic problems,

compliance with

reporting requirements,

and the relative safety significance of each event.

Additional in-plant

reviews

and

discussions

with plant personnel,

as

appropriate,

were co'nducted.

(Closed)

LER 50-259/89-01:

"Oesign Oversight

on Seismic gualification of

4160 Volt and 480 Volt Breakers

Places

the Plant in Unanalyzed Condition"

On January

18,1989,

the licensee

determined

that seismic

documentation

could not be established

for various positions of 4160 and 480 volt safety

related circuit breakers.

This determination

resulted

in the plant being

in an unanalyzed

condition.

The licensee

put the affected

breakers

in an

analyzed

position or

removed

them

frorg the vicinity of safety

related

equipment.

In addition the licensee

committed to provide administrative

controls

by

March

8,

1989

to ensure

breaker

seismic qualification is

maintained.

(Closed)

LER 50-260/89-16:

"Technical

Specification Violation Due to

a

Seismic Unqualified 480 Volt Shutdown Board"

On May 30,

1989, the licensee

determined that the 480 volt Shutdown

Board

2A.

had not

been

maintained

in

a seismically qualified configuration in that

the normal feeder breaker for the board

was in the disconnect

position with

the breaker

compartment

door open.

This placed the Core Spray Loop

1 in an

inoperable condition.

The core spray loop was required to comply with the

technical

specifications.

This

event

resulted

from

an "unidentified

person" failing to comply with the administrative controls instituted

as

the result of LER 50-259/89-01

discussed

above.

The inspectors

performed

a walkdown inspection of 33 safety-related

panels

containing

approximately

1500

breakers

to evaluate

compliance

with the

administrative controls instituted

as the result of LER 50-259/89-01.

In

'ddition,

the inspectors

reviewed the package

submitted

by the licensee for

the closure of both

LERs discussed

above.

The results of these

inspections

are discussed

below.

The inspectors

noted three

panel

doors

open including one

on

a breaker, all

of which are violations of the above discussed

administrative controls.

It

should

be

noted that,

because

all three units

are defueled, all seismic

controls

have

been

suspended,

and the percentage

of noncompliance with the

administrative controls is very small, there is

no safety significance to

this matter.

The inspectors

noted that, in the LERs, there

was

no mention of training to

assure

understanding,

and

compliance

with the instituted administrative

controls.

Additional

investigation

indicated

that training

had

been

performed

though

not

discussed.

The

inspectors

determined

that

the

licensee's

corrective actions

have

been

adequate

to prevent recurrence

of

this event.

Both the above

items are considered

closed.

4.

Licensee Action on Pipe Support Modifications

Reference

1:

IE Bulletin 79-02,

"Pipe Support

Base

Plate

Designs

Using Concrete

Expansion

Anchor Bolts"

Reference

2:

IE Bulletin 79-14,

"Seismic

Analyses

For As-Built

Safety-Related

Piping System"

a

~

Status

The inspection

involved pipe support modifications required to

meet

IEBs 79-02

and 79-14 before the restart of Unit 2.

The last

inspection in this area

was

documented

in Inspection

Report Nos.

50-259,

260, 296/90-19

The

licensee

has

completed

approximately

1700

pipe

support

modifications,

which represents

about

70 percent of the total to

be completed

before restart.

All pipe support modifications are

scheduled

to

be

completed

to support

a fuel load schedule

of

October

1990.

b.

Walkdown Re-Inspection

The

inspectors

randomly

selected

33

pipe

supports

which

had

previously

been

inspected

and

accepted

by

the

licensee

construction

foreman

and

gC inspectors.

The

33 pipe supports

were all in large bore piping for three different safety-related

systems

located

both inside

and

outside

of containment.

The

walkdown

re-inspection

was

completed

with assistance

from

licensee's

engineers

and

a

gC mechanical

inspector

who was also

qualified

as

a welding inspector.

The supports

were partially

re-inspected

against

detail

drawings,

including the original

walkdown sketches,

the

Design

Change

Notices

(DCNs),

and

the

Field

Design

Change

Notices

(FDCNs).

They were

checked for

configuration,

identification,

fastener/

anchor

installation,

anchor size,

anchor type,

anchor marking,

anchor

edge distance,

base

plate size

and thickness,

plate warpage,

member size,

weld

sizes,

component

identification

numbers,

component

sizes

and

settings,

dimensions,

oxidation accumulation,

maintenance,

and

damage/protection.

The supports

re-inspected

during the current

inspection

are listed below.

Table I

Walkdown Re-Ins ection

Su

orts

Item No.

Su

ort No.

Comments/Discre

ancies

1.

2.

3.

4,

5.

6.

7.

8.

9

10.ll.

'2.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

2-478406S0018

2-47B408S0045

2-47B408S0046

2-478408S0047

2-478408S0048

,

2-47B408S0053

2-47B408S0061

2-47B408S0062

2-47B408S0071

2-47B408S0078

2-47B408S0081

2-47B415H0002

2-47B415H0004

2-478415H0006

2-47B415S0007

2-478415S0008

2-47B415S0009

2-47B553H0001

2-47B553H0002

2-478553H0003

2-47B553H0004

2-47B553H0005

2-478553H0007

2-47B553H0008

2-47B553H0009

2-478553H0010

2-478553H0011

2-47B553H0012

2-478553H0014

2-47B553H0015

2-47B553H0016

2-47B553H0017

2-47B553H0018

The snubber

end attach-

ment was binding with

the recirculation

pump

lug.

All The

support

modifications

reinspected

were

found to

be

acceptable

except

Support

No.

2-47B408S0047.

For this item the

plate at the

end attachment

of the

snubber

was

found to have

bound

with the recirculation

pump lug.

The licensee's

engineer

and

QC inspector reinspected

the situation

and established

a I/32

inch clearance

by manually rotating the snubber.

However, after

a further investigation, it was found that the recirculation

pump

movement

during the operation will cause

the hydraulic snubber

to bind.

The licensee

agreed

to perform further evaluation

to

determine

any possible

clearance

problems for this support

and

other supports

on the recirculation

pumps

and will have observa-

tions for clearances

on all supports

on the recirculation

pumps

during hot function test.

This item is identified as Inspector

Followup Item (IFI) 50-260/90;26-01,

Clearance

Problems for Pipe

Supports

around Recirculation

Pumps.

c.

Support Calculation

Review

The design calculations listed below on Table II were partially

reviewed

and

evaluated

for thoroughness,

clarity, consistency,

and

accuracy.

The

calculations

contained

the

purpose,

assumptions,

references,

design

loads,

support

evaluations,

summary of results,

conclusion,

and attachments.

The attachments

included

existing

pipe

support

configuration

from walkdowns,

proposed

support modifications or Design

Change

Notices

(DCNs),

Employee

Concerns

Checklist,

and

computer

input and output for

frame

and

base

plate

analyses.

The review included:

that the

applied

loads

used

were taken from the latest stress

calculation;

computer

model,

computer

input

and

output,

check

of

displacements,

member size,

weld sizes,

and symbols, bolt sizes,

and

standard

component

capacity

and settings.

In general,

the

design calculations

were of good quality.

TABLE II

Su

ort Calculations

Reviewed

Su

ort No.

Calculation

No.

Rev.

2-478406S0018

2-478408S0081

2-47B553H0001

2-47B553H0002

2-47B553H0011

CDQ-2069870457

CDQ-2068900016

CDQ-2002892663

CDQ-2002892664

CDQ-2002892672

Within the areas

examined,

no violations or deviations

were identified.

1

5.

Welding

(55050)

The inspectors

reviewed procedures,

observed

work activities in progress,

and

reviewed

records

of completed

work,

as

indicated

below, to determine

whether

the licensee's

welding procedures,

welding work activities,

and

welding records

are in conformance

with applicable

codes,

standards,

and

regulatory

commitments.

The applicable

codes for welding work activities

are specified

below.

Pipe Welding:

ANSI-B31.1-67

Pipe Support Welding:

AISC Specification,

8th Edition/AWS-Dl.1-1980

Other Applicable Codes:

ASME Section

IX latest at time of qualification

a ~

Base Material

and Filler Material Compatibility

The inspectors verified the following:

base material-welding material

combinations

are appropriate

and consistent

with code

and regulatory

requirements;

the licensee/contractor

has

established

procedures

for

purchasing,

receiving, storing, distributing,

and handling of welding

consumables;

welding materials

purchasing

and receiving are conducted

in

accordance

with approved

procedures;

welding material

storage

procedures

contain

appropriate

identification

and

environmental

controls; welding materials

are clearly identified and controlled; the

licensee/contractor

has

a single

system

for controlling welding

consumables;

distribution of welding filler materials

including issue

return

and

stubs/scraps

are

properly controlled

and

ASME required

tests

are

performed

on

each lot of welding filler materials.

The

above

was

accomplished

by review of procedures,

interviews with craft

personnel,

inspection

of welding

consumables

issue

stations,

observation of work activities,

and review of selected

records.

Welding Materials

Examined

Size

Heat Lot or Batch

No

E7018

E7018

E-70S3

b.

Welding Procedures

3/32"

I/8"

3/32"

2B726AFO

29827C

J6629

The

inspectors

reviewed

the

below listed

Welding

Procedure

Specifications

(WPSs)

and their

associated

Procedure

gualification

Record

(PgRs)

to determine

whether:

the licensee

has

established

adequate

procedures

to

control

the

preparation,

qualification,

approval, distribution

and revision of WPSs;

WPSs define essential,

supplementary

essential,

and nonessential

variables

in accordance

with

the applicable

code sections;

WPSs

were qualified in accordance

with

applicable

code sections;

P(Rs list essential

variables

as required

by

T

Cl

the

code;

appropriate

mechanical

tests

were

performed

in accordance

with code

requirements;

PgRs

were properly certified

and mechanical

test results

meet or exceed

code

minimum requirements;

changes

to

WPS

essential

variables

are

supported

by requalification;

changes

to

WPS

nonessential

variables

are

properly identifies

and

documented;

and

WPSs

comply with appropriate

Regulatory Guides.

WPSs

Examined

WPS Identification

Process*

PgR

c ~

GT-SM11-0-03B

GTAW/SMAW

Welder Performance gualification

GT-SM11-0-3

GT-SM11-0-3-C

  • SMAW-Shielded Metal Arc Welding;

GTAW-Gas Tungsten Arc Welding

The

inspectors

reviewed

procedures

and

welder/welding

operator

Performance gualification Test Records

(PETR) to determine

whether. the

licensee:

has established

adequate

procedures

for the qualification of

welders/welding

operators

consistent

with the applicable

code;

has

a

workable system for maintaining

a continuous

record for qualification

status;

and

has

qualified

and

maintained

the qualification of

welders/welding

operators

who are currently

performing

production

welding.

Welder/Welding Operator

P(TRs

Examined

BF-932,

BF-898, BF-451, BF-904,

and BF-1027

d.

Production Welding

The

inspectors

observed

welding

on

the

below

indicated

components/structures

to determine

the following: work conducted

in

accordance

with a "traveler";

WPSs

and drawings

were available to the

welder/welding

operator;

WPS

assignment

in

accordance

with the

applicable

code;

welding technique

and

sequence

were specified;

base

materials

and welding materials

were

as

specified,

identified

and

traceable

to test

reports; joint geometry

and preparation

was

as

specified; fit up configuration

and

dimensions

were

as

specified;

temporary attachments

were attached

by qualified welders in accordance

with a qualified

WPS;

purging

gas

was

as specified;

preheat

was in

accordance

with the applicable

WPS; welder

technique

was in accordance

with the

applicable

WPS;

welding electrodes

were

used

only in

positions

and with the electrical

characteristics

specified

by the

WPS; shielding

gas flow and composition were as specified in the

WPS;

shielding

gas

flowmeters

are

appropriate

to the

gas

used;

welding

equipment

including

cables

were

in

good

condition;

interpass

temperature

was properly controlled; interpass

cleaning

was conducted

10

in accordance

with applicable

procedures;

backgouging

was performed

as

specified;

temporary

attachments,

arc strikes,

and weld spatter

were

removed

and

inspected

in

accordance

with applicable

procedures;

process

control

system

has

provisions

for repairs;

repairs

are

conducted

in

accordance

with specified

procedures;

repairs

were

properly

documented;

welders/welding

operators

were

properly

qualified;

no peening

was

done

on the root or surface

layer of the

weld

or

the

base

metal

at

the

edge

of the

weld;

and

the

licensee/contractor

has

a maintenance

program for welding equipment.

Com onent/Structure

Identification

Unit

~T

e

3-47B-451-R0076

3-47B-451-S0025

EECW-3-002-001

e.

Observations

3

Pipe Support

Weld

3

Pipe support

Weld

3

Pipe Weld

Contrary to

ASME Code Section

IX Paragraph

IW-200.2 (c), which

states

in part

"The

PgR shall list actual

variables

used within

the limits of a narrow range rather

than the full range of the

variables

allowed. ...,"

PgR GT-SNll-0-3-C lists wide ranges for

shielding

gas flow, welding current

and arc voltage.

This is of

concern

because

the minimum value for the nonessential

variable

gW-408.3

"A decrease

of 10Ã or more in the flow rate of shielding

gas..."

and

the

maximum value for the nonessential

variable

gW-409. 1 "...an

increase

in heat input..." cannot

be properly

determined for specification in the

WPS.

Contrary to ASME Code Section

IX paragraph

gW-403.6, which states

"...For

thickness of 5/8 in.

and greater

the minimum thickness

qualified is 5/8 in.," PgR GT-SN11-0-3-C,

an impact tested

P(R,

stated

the test

plate

thickness

was

1-7/8"

and

the

minimum,

thickness

qualified

was

3/16".

In addition

there

is

no

referenced

PgR that would support welding with WPS GT-SNll-0-03B

on

base

material

thickness

less

than

0.432"

even

though

TYA

General

Construction Specification

G-29 permits welding with WPS

GT-SM11-0-03B on material

thickness

as thin as 0. 187".

The

above

are

examples

of lack of adequate

control of the welding

process

at

the

Browns

Ferry site,

in that it appears

that

PgR GT-SN11-0-3-C

does

not appropriately

support welding for impact

test required applications.

Failure to control welding is

a violation

of

10 CFR 50, Appendix B, Criterion IX, which requires

adequate

measures

be

established

to control

special

processes,

including

welding,

to

assure

accomplishment

of those

special

processes

in

accordance

with applicable

codes

and standards.

This violation will

be identified as 50-259,260,296/90-26-02:

"Failure to Control Welding

for Impact Test Required Applications."

0

ll

In addition to the violation noted

above,

the inspectors

identified the

following items of lesser safety significance.

The inspectors

noted

on the

Weld Data

Sheet for weld EECW-3-002-001

the following:

'he

welder

foreman

erroneously

documented

the

Weld Procedure

Number

as

GT-SMll-B3 vice GT-SMll-0-3B, in several

locations

.

The

gC inspector

who

made

the fitup inspection

made

the

same

error.

Although the welding

had

progressed

past

the fitup stage,

the

space for the Authorized Nuclear Inservice Inspector's

(ANII's)

hold point had not been

signed off.

The inspectors

were informed

that the ANII had

indeed

signed off for the fitup in a separate

location

in the

package.

The

reason

gi.ven for the

remote

sign-off was

due to a dispute over the number of places

the ANIIs

are required sign-off in each

package.

The licensee

has

no formal

documented

program for the maintenance

of

welding equipment with the exception of BF 14.28,

dated

10/17/83,

"

CONTROL

OF

PORTABLE ELECTRICAL CORDS

AND DEVICES" which should

cover

welding cables.

The licensee

had

a

program for welding equipment

maintenance

described

in procedure

MAI -12,

but that procedure

was

discontinued

in 1987.

This is of concern,

in view of the non-isolable

leak in control

rod drive tubing, which was

caused

by an arc from a

degraded

welding cable, that occurred

August 8,

1990.

No

violations

or

deviations

were

identified

except

as

noted

in

paragraph

5.e.

6.

Exit Interview

The inspection

scope

and results

were summarized

on August 10,

1990, with

those

persons

indicated in paragraph

1.

The inspectors

described

the areas

inspected

and discussed

in detail the inspection results listed below.

The

item concerning

welding

was identified as

an unresolved

item at the exit

interview.

The licensee

was

informed by telephone

on August 15,

1990 that the welding

item would

be cited

as

a violation.

Proprietary

information is not

contained

in this report.

Dissenting

comments

were not received

from the

licensee.

(Open) IFI 50-260/90-26-01:

"Clearance

Problems for Pipe Supports

around

Recirculation

Pumps" - Paragraph

4.b.

(Open) Violation 50-259,260,296/90-26-02: 'Failure to Control

Welding" - Paragraph

5.e.

r

L

0