Information Notice 1989-20, Weld Failures in a Pump of Byron-Jackson Design

Weld Failures in a Pump of Byron-Jackson Design

ML031180532
Person / Time
Site:	Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, 05000000, Zimmer, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant, Crane
Issue date:	02/24/1989
From:	Rossi C Office of Nuclear Reactor Regulation
To:
References
IN-89-020, NUDOCS 8902170112
Download: ML031180532 (7)

UNITED STATES

NUCLEAR REGULATORY COMMISSION

OFFICE OF NUCLEAR REACTOR REGULATION

WASHINGTON, D.C.

20555

February 24, 1989

NRC INFORMATION NOTICE NO. 89-20: WELD FAILURES IN A PUMP OF BYRON-JACKSON

DESIGN

Addressees

All holders of operating licenses or construction permits for nuclear power

reactors.

Purpose

This information notice alerts addressees to weld failures in a primary loop

recirculation pump of Byron-Jackson design experienced by owners of boiling

water reactors (BWRs) in a foreign country.

It is expected that recipients

will review the information for applicability to their facilities and consider

actions, as appropriate, to avoid similar problems. However, suggestions con- tained in this information notice do not constitute NRC requirements; therefore, no specific action or written response is required.

Description of Circumstances

The following information is related to boiling water reactors; however, the

nature of the weld failures was such that potentially all pumps of similar

design could be affected.

1. In 1984, a foreign BWR experienced a failure in the attachment

weld of a ring that surrounds the bearing housing component of

a pump manufactured by Byron-Jackson but fabricated and assembled

by a foreign company.

The power company operating the BWR per- formed repairs using fillet welds applied at the failed locations.

During inspections in 1988 cracks were found at the same weld

locations in both recirculation pumps.

The repair involved ap- plying full penetration butt welds with some axial realignment

of the ring.

2. Similar problems were recently reported at another BWR plant in

the same country in which the first event took place.

Significant

vibration was observed during a normal end-of-cycle coastdown for

annual maintenance. The plant was immediately shut down for

inspection.

It was found that the ring and impeller had broken, and some fasteners were found in various sections of the recircu- lation loop.

8902170112 Z

-

1

IN 89-20 .

February 24, 1989 3.

As a result of the 1984 and 1988 incidents, owners of BWRs in the

foreign country began a program of inspection and repair using the

full penetration welds and-realignment of the ring.

The unit that

experienced the broken ring and impeller had not yet been inspected

for deficiencies in the welding before the failure occurred. As a

result of the failure, one of seven other units of a similar power

level was shut down because it had not been inspected or repaired.

No specific action or written response is required by this information

If you have any questions about this matter, please contact one of the

contacts listed below or the Regional Administrator of the appropriate

office.

notice.

technical

regional

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

N. Prasad Kadambi, NRR

(301) 492-1153 Technical Contacts:

P. T. Kuo, NRR

(301)492-92go1 Attachment:

List of Recently Issued NRC Information Notices

Attachment

IN 89-20

• February 24, 1989 LIST OF RECENTLY ISSUED

NRC INFORMATION NOTICES

Information

Date of

Notice No.

Subject

Issuance

Issued to

89-19

Health Physics Network

Criminal Prosecution of

Wrongdoing Committed by

Suppliers of Nuclear

Products or Services

2/23/89

2/22/89

All holders of OLs

or CPs for nuclear

power reactors, and

the following fuel

facilities: Nuclear

Fuel Services of Erwin,

General Atomic, UNC

Montville, B&W LRC

Lynchburg, and B&W

Lynchburg.

All holders of OLs

or CPs for nuclear

power reactors.

89-18

89-17 Contamination and Degra- dation of Safety-Related

Battery Cells

2/22/89

.

-

i

-. .

All holders of OLs

or CPs for nuclear

power reactors.

89-16

89-15

89-14

Excessive Voltage Drop

in dc Systems

Second Reactor Coolant Pump

Shaft Failure at Crystal

River

Inadequate Dedication

Process for Commercial

Grade Components Which

Could Lead to Common Mode

Failure of a Safety System

Alternative Waste Management

Procedures in Case of Denial

of Access to Low-Level Waste

Disposal Sites

Dose Calibrator Quality

Control

2/16/89

2/16/89

2/16/89

2/8/89

2/9/89

All holders of OLs

or CPs for nuclear

power reactors.

All holders of OLs

or CPs for nuclear

power reactors.

All holders of OLs

or CPs for nuclear

power reactors.

All holders of NRC

specific licenses.

All NRC medical

licensees.

89-13

89-12 OL = Operating License

CP = Construction Permit

IN 89-20

February 24, 1989

3.

As a result of the 1984 and 1988 Incidents, owners of BWRs in the

foreign country began a program of inspection and repair using the

full penetration welds and realignment of the ring.

The unit that

experienced the broken ring and impeller had not yet been inspected

for deficiencies in the welding before the failure occurred.

As a

result of the failure, one of seven other units of a similar power

level was shut down because it had not been inspected or repaired.

No specific action or written response is required by this information

If you have any questions about this matter, please contact one of the

contacts listed below or the Regional Administrator of the appropriate

office.

notice.

technical

regional

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

Technical Contacts:

N. Prasad Kadambi, NRR

(301) 492-1153

P. T. Kuo, NRR

(301) 492-0907 Attachment:

List of Recently Issued NRC Information Notices

OGCB: DOEA: NRR*

NPKadambi

2/16/89 TECH ED*

BCalure

2/17/89 EMB:DEST:NRR*

PTKuo

2/9/89 EAD:DEST:NRR*

JERichardson

2/13/89 GPA: IP*

KBurke

2/10/89 D:DEST:NRR*

LCShao

2/14/89 EMEB:DEST:NRR*

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2/13/89 C:OGCG:DOEA:NRR*

CHBerlinger

2/15/89 EMTB:DEST:NRR*

CYCheng

2/13/89

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IN 89 3. As a result of the 1984 and 1988 incidents, owners of BWRs in the

foreign country began a program of inspection and repair using the

full penetration welds and realignment of the ring. The unit that

experienced the broken ring and impeller had not yet been inspected

for deficiencies in the welding before the failure occurred.

As a

result of the failure, one of seven other units of a similar power

level was shut down because it had not been inspected or repaired.

No specific action or written response is required by this information

If you have any questions about this matter, please contact one of the

contacts listed below or the Regional Administrator of the appropriate

office.

notice.

technical

regional

Charles E. Rossi, Director

Division of Operational Events

Assessment

Office of Nuclear Reactor Regulation

Technical Contacts:

N. Prasad Kadambi

(301) 492-1153 P. T. Kuo

(301) 492-0907 Attachment:

1. List of Recently Issued NRC Information Notices

Distribution

NPFKadamb-i

PTKuo

KBurke

LBMarsh

JERichardson

LCShao

CBerlinger

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(c) As a result of the 1984 and 1988 incidents, BWRs in the foreign

country began a program of inspection and repair using the full

penetration welds and realignment of the ring. The unit which

experienced the broken ring had not yet been inspected for this

purpose before the failure occurred. As a result of the failure, one of the seven other units of similar power level was shut down

because it had been neither inspected nor repaired.

No specific action or written response is required by this information

notice.

If you have any questions about this matter, please contact one of

the technical contacts listed below or the Regional Administrator of the

appropriate regional office.

Charles E. Rossi, Director

Division of Operational Events

Assessment

Office of Nuclear Reactor Regulation

Technical Contacts:

N. Prasad Kadambi

(301) 492-1153 P. T. Kuo

(301) 492-0907 Attachment:

1. List of Recently Issued NRC Information Notices

Distribution

NPKadambi

PTKuo

KBurke

LBMarsh

JERichardson

LCShao

CBerlinger

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2/ 15 /89

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(c) As a result of the 1984 and 1988 incidents, BWRs in the foreign

country began a program of inspection and repair using the full

penetration welds and realignment of the ring.

The unit whic

experienced the broken ring had not yet been inspected. As

result of the failure, other units of similar power level

11 either be shut down for immediate inspection, or be repaited

during the next scheduled inspections. Those of simila design

but different power levels have adopted administrativ procedures

to ensure early detection of similar problems.

No specific action or written response is required by this nformation

notice.

If you have any questions about this matter, ple se contact one of

the technical contacts listed below or the Regional Admin istrator of the

appropriate regional office.

Charles E Rossi, Director

Divisio of Operational Events

Asse ment

Offic of Nuclear Reactor Regulation

Technical Contacts: N. Prasad Kadambi

(301) 492-1153 P. T. Kuo

(301) 492-0907 Attachment:

1. List of Recently Issued NRC I formation Notices

Distribution

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PTKuo

KBurke

LBMarsh

JERichardson

LCShao

CBerlinger

CERossi

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