View source for Information Notice 1989-48, Design Deficiency in the Turbine-Driven Auxiliary Feedwater Pump Cooling Water Systems

{{Adams
| number = ML031190368
| issue date = 05/22/1989
| title = Design Deficiency in the Turbine-Driven Auxiliary Feedwater Pump Cooling Water Systems
| author name = Rossi C
| author affiliation = NRC/NRR
| addressee name = 
| addressee affiliation = 
| docket = 05000000, 05000003, 05000010, 05000029, 05000133, 05000155, 05000171, 05000206, 05000213, 05000219, 05000220, 05000237, 05000244, 05000245, 05000247, 05000249, 05000250, 05000251, 05000254, 05000255, 05000259, 05000260, 05000261, 05000263, 05000265, 05000266, 05000267, 05000269, 05000270, 05000271, 05000272, 05000275, 05000277, 05000278, 05000280, 05000281, 05000282, 05000285, 05000286, 05000287, 05000289, 05000293, 05000295, 05000296, 05000298, 05000301, 05000302, 05000304, 05000305, 05000306, 05000309, 05000311, 05000312, 05000313, 05000315, 05000316, 05000317, 05000318, 05000320, 05000321, 05000322, 05000323, 05000324, 05000325, 05000327, 05000328, 05000329, 05000330, 05000331, 05000333, 05000334, 05000335, 05000336, 05000338, 05000339, 05000341, 05000344, 05000346, 05000348, 05000352, 05000353, 05000354, 05000358, 05000361, 05000362, 05000364, 05000366, 05000368, 05000369, 05000370, 05000373, 05000374, 05000382, 05000387, 05000388, 05000389, 05000390, 05000391, 05000395, 05000397, 05000400, 05000409, 05000410, 05000412, 05000413, 05000414, 05000416, 05000417, 05000423, 05000424, 05000425, 05000437, 05000438, 05000439, 05000440, 05000441, 05000443, 05000444, 05000445, 05000446, 05000454, 05000455, 05000456, 05000457, 05000458, 05000461, 05000482, 05000483, 05000498, 05000499, 05000508, 05000528, 05000529, 05000530
| license number = 
| contact person = 
| document report number = IN-89-048, NUDOCS 8905160199
| document type = NRC Information Notice
| page count = 9
}}
{{#Wiki_filter:UNITED STATES

NUCLEAR REGULATORY COMMISSION

OFFICE OF NUCLEAR REACTOR REGULATION

WASHINGTON, D.C. 20555 May 22, 1989 NRC INFORMATION NOTICE NO. 89-48:   DESIGN DEFICIENCY IN THE TURBINE-
                                    DRIVEN AUXILIARY FEEDWATER PUMP

COOLING WATER SYSTEM

==Addressees==
:
All holders of operating licenses or construction permits for nuclear power

reactors.

==Purpose==
:
This information notice is being provided to alert addressees to a design

deficiency in a turbine-driven auxiliary feedwater pump cooling water system.

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 contained in this information notice do not

constitute NRC requirements; therefore, no specific action or written response

is required.

==Description of Circumstances==
:
On April 13, 1989, the licensee for the f1on Station identified a design de- ficiency in the turbine-driven auxiliary feedwater (AFW) pump cooling water

system. The deficiency was created when a modification was made to the turbine- driven AFW pump in order to satisfy the AC power independence criterion. This

modification changed the pump's cooling water supply from the service water

system to the auxiliary feedwater system. The cooling water now comes from

the fifth stage leakoff of the AFW pump and is supplied to the pump's lube

oil cooler, the AFW turbine governor, and the AFW turbine bearings at 75 psig

by a pressure-regulating valve. The cooling water is then returned to the AFW

pump suction line. The deficiency would have occurred when the AFW pump suction

was aligned to its emergency supply (service water) rather than its normal

supply (the condensate storage tank). In this emergency lineup, the suction

pressure will increase to approximately 90 psig. Because the AFW pump cooling

water pressure would be-below the AFW pump suction pressure, AFW pump cooling

water flow would be lost. This loss of cooling water flow could eventually

lead to overheating of the AFW pump turbine bearings and failure of the AFW

pump turbine.

IN 89-48 May 22, 1989 Discussion:
The licensee made a temporary modification in the

AFW

line configuration to correct this design deficiency. pump cooling water return

is under development for future installation.             A permanent modification

No specific action or written response is required

If you have any questions about this matter, please by this information notice.

contact listed below or the Regional Administrator contact the technical

of the appropriate regional

office.

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

===Technical Contact:===

===Jared Wermiel, NRR===
                     (301) 492-0870
Attachment:   List of Recently Issued NRC Information Notices

;
                                                  I I  I *  *       ---

-
                                                         Attachment

IN 89-48 May 22, 1989 LIST OF RECENTLY ISSUED

NRC INFORMATION NOTICES

Information                                    Date of

Notice No.      Subject                        Issuance  Issued to

89-47            Potential Problems With        5/18/89  All holders of OLs

Worn or Distorted Hose                  or CPs for nuclear

Clamps on Self-Contained                power reactors and

Breathing Apparatus                     fuel facilities.

89-46            Confidentiality of             5/11/89  All holders of licenses

Exercise Scenarios                      for fuel cycle facilities

and byproduct material

licensees having an

approved emergency

response plan.

89-45           Metalclad, Low-Voltage          5/8/89   All holders of OLs

Power Circuit Breakers.                 or CPs for nuclear

Refurbished with Sub-                   power reactors.

standard Parts

89-44           Hydrogen Storage on the         4/27/89  All holders of OLs

----Roof of the-Control Room                or CPs for nuclear

power reactors.

88-82,          Torus Shells with Corrosion     5/2/89   All holders of OLs

Supp. 1         and Degraded Coatings in '               or CPs for BWRs.

BWR Containments

89-43           Permanent Deformation of        5/1/89   All holders of OLs

Torque Switch Helical                    or CPs for nuclear

Springs in Limitorque                    power reactors.

SMA-Type Motor Operators

88-97,          Potentially Substandard         4/28/89  All holders of OLs

Supp. 1         Valve Replacement Parts                  or CPs for nuclear

power reactors.

89-42           Failure of Rosemount            4/21/89  All holders of OLs

Models 1153 and 1154                     or CPs for nuclear

Transmitters                             power reactors.

89-41           Operator Response to            4/20/89  All holders of OLs

Pressurization of Low-                   or CPs for nuclear

Pressure Interfacing                     power reactors.

Systems

OL = Operating License

CP = Construction Permit

I I

I                                                                     IN 89-48 May 22, 1989 Discussion:
      The licensee made a temporary modification in the AFW pump cooling water return

line configuration to correct this design deficiency. A permanent modification

is under development for future installation.

No specific action or written response is required by this information notice.

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

contact 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 Contact:===

===Jared Wermiel, NRR===
                            (301) 492-0870
      Attachment:   List of Recently Issued NRC Information Notices

*SEE PREVIOUS CONCURRENCES

D          *C/OGCB:DOEA:NRR

s1     5;HBerlinger

05//6/89     0515/89
       *OGCB:DOEA:NRR *C/SPLB:DEST:NRR      *SAD/DEST:NRR  *D/DEST:NRR *RPB:ARM

DProchnow       JWermei1             AThadani       LCShao       TechEd

05/09/89        05/09/89             05/09/89       05/10/89     05/11/89

IN 89-XX

May xx, 1989 Discussion:
                                                           pump cooling water return

The licensee made a temporary modification in the AFW A permanent modification

line configuration to correct this   design  deficiency.

Is umdr development for future installation.'
                                                                 information notice.

No specific action or written response is required by this

please  contact  the technical

If you have any questions about this matter,                  appropriate   office.

contact listed below or the Regional Administrator      of the

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

===Technical Contact:===

===Jared Wermiel, NRR===
                      (301) 492-0870
Attachtent:   List of Recently Issued NRC Information Notices

-
  *SEE PREVIOUS CONCURRENCES                                            C/ B:ODOEA:NRR

D/DOEA:NRR

CERossi        CHBerlinger

05/ /89        05/ij/89 .

*SAD/DEST:NRR    *D/DEST:NRR   *RPB:ARM

*OGCB:DOEA:NRR *C/SPLB:DEST:NRR                                       TechEd

DProchnow       JWermeil             AThadani         LCShao

05/09/89              05/09/89        05/10/89       05/11/89
    05/09/89

IN 89-XX

Z'                                                                     May xx, 1989 Discussion:
    To correct the above condition, the licensee has made a temporary modification

in the AFW pump cooling water return line configuration. A permanent modifica- tion Is under development for future installation.

No specific action or written response is required by this information notice.

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

contact listed below or the Regional Administrator of the appropriate office.

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

, 

===Technical Contact:===

===Jared Wermiel, NRR===
                          (301) 492-0870
     Attachment:   List of Recently Issued NRC Information Notices

-
                                                         D/DOEA:NRR   C/OGCB:DOEA:NRR

CERossi      CHBerlinger

05/ /89      05/ /89 OGCB:DOEA:NRR  C/StB:DEST:NRR       SAD/DEST:NRR   D/DEST:NRR   RPB:ARM

DProchnow      Jwlermei            AThadani        LCShaov      TechEd

05/q /89       05/ 9 /89           05/    89       05/j /890'   05/1, /89

IN 89-48 May 22, 1989 Discussion:
The licensee made a temporary modification in the AFW pump cooling water return

linetconfiguration to correct this design deficiency. A permanent modification

is under development for future installation.

No specific action or written response is required by this information notice.

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

contact 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 Contact:===

===Jared Wermiel, NRR===
                      (301) 492-0870
Attachment:   List of Recently Issued NRC Information Notices

*SEE PREVIOUS CONCURRENCES

*C/OGCB:DOEA:NRR

Ss       Berlinger

O5//a/89     05715/89
*OGCB:DOEA:NRR *C/SPLB:DEST:NRR      *SAD/DEST:NRR  *D/DEST:NRR  *RPB:ARM

DProchnow       JWermei1             AThadani       LCShao       TechEd

05/09/89        05/09/89             05/09/89       05/10/89     05/11/89

IN 89-XX

May xx. 1989 Discussion:
                                                       pump cooling water return

The licensee made a temporary modification in the AFW A permanent modification

line configuration to correct this design deficiency.

Is under development for future installation.

this information notice.

No specific action or written response is required by         the technical

contact

If you have any questions about this matter, please of the appropriate office.

contact listed below or the Regional Administrator

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

===Technical Contact:===

===Jared Wermiel, NRR===
                     (301) 492-0870
Attachment:  List of Recently Issued NRC Information Notices

*SEE PREVIOUS CONCURRENCES                                        Cl    B:DOEA-NRR

D/DOEA:NRR

CERossi       CHBerlinger

05/ /89       05//fi/89
                                     *SAD/DEST:NRR  *D/DEST:NRR   *RPB:ARM

*OGCB:DOEA:NRR *C/SPLB:DEST:NRR                                   TechEd

JWermel1            AThadani        LCShao

DProchnow                                          05/10/89      05/11/89
   05/09/89       05/09/89            05/09/89

-                                           IN 89-XX

May xx, 1989 Discussion:
To correct the above condition, the licensee has made a temporary modification

in the AFW pump cooling -water return line configuration. A permanent modifica- tion is under development for future installation.

No specific action or written response is required by this information notice.

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

contact listed below or the Regional Administrator of the appropriate office.

Charles E. Rossi, Director

Division of Operational Events Assessment

Office of Nuclear Reactor Regulation

===Technical Contact:===

===Jared Wermiel, NRR===
                     (301) 492-0870
Attachment:  List of Recently Issued NRC Information Notices

D/DOEA:NRR   C/OGCB:DOEA:NRR

CERossi      CHBerlinger

6)I                                            05/ /89      05/ /89 OGCB:DOEA:NRR C/SIB:DEST:NRR        SAD/DEST:NRR   D/DEST:NRR w RPB:ARM

DProchnow      Jilermei 1           AThatani       LCShao .     TechEd

05/q /89       05/ 9 /89            05/   89       *05//O/89lO  05/l/ /89}}

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