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=Text=
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{{#Wiki_filter:REGULATORY r     "ORMATION DISTRIBUTION SYS "M (RIDS)
{{#Wiki_filter:REGULATORY r
ACCESSION NBR: 8009090513           DOC   DATE:                         80/09/03               NOTARIZED: NO                 '. DOCKET FACIL:50-244 Robert Emmet
"ORMATION DISTRIBUTION SYS "M (RIDS)
                                          ~
ACCESSION NBR: 8009090513 DOC ~ DATE: 80/09/03 NOTARIZED:
Ginna Nuclear Pl ant AFFIL'IATION P   Unit ii Rochester             G 05000244 AUTH INANE             AUTHOR HHI TEE L. D ~       Rochester   Gas   L Electric Corp.
NO DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Pl ant P Unit ii Rochester G
REC IP ~ iVAME         RECIPIENT AFFILIATION CRUTCHFIELDPD ~           Operating Reactors Branch                                         5
05000244 AUTH INANE AUTHOR AFFIL'IATION HHITEE L. D ~
Rochester Gas L Electric Corp.
REC IP ~ iVAME RECIPIENT AFFILIATION CRUTCHFIELDPD ~
Operating Reactors Branch 5


==SUBJECT:==
==SUBJECT:==
Responds       to NRC 800811     request                       for info. re generic review of degraded grid, voltage.All low-voltagegi25 volt ac Class IE buses are supplied from either uniterruptable power soUrce or regulated 480/125-volt g'NCL Q            I transformers'ISTRIBUTION CODE: A DIBS   COPIES RECEIYED:LiTR                                                     SIZE TITLE: Onsi te   Emer gency Power Systems NOTES:1 copy:SEP     Sect. Ldr.                                                                                                   05000244 RECIPIENT         COPIES                                    RECIPIENT                      COPIES ID CODE/NAME       Lfl'TR EN L                             ID                             LTTR ACTION:      CRUTCHF-IELD    04 CODE/NAME'EN 7
Responds to NRC 800811 request for info. re generic review of degraded grid,voltage.All low-voltagegi25 volt ac Class IE buses are supplied from either uniterruptable power soUrce or regulated 480/125-volt transformers'ISTRIBUTION CODE:
INTERNAL:    AEOD                                                                ISSUES BR13 ISC SYS BR      09                                            ILE                       06 MPA            18                                            NRC PDR                   02 OELD            17                                            OP EX EVALl             BR11,         ENCL'XTERNAL:
A DIBS COPIES RECEIYED:LiTR g'NCL Q SIZE I TITLE: Onsi te Emer gency Power Systems NOTES:1 copy:SEP Sect.
OR          BR 12                                            POHER            SYS BR 14 G FILE      01 ACRS           16     16                                     LPDR                       03 NSIC            05        1
Ldr.
                                                                                                      ~EF'e   tgao o
05000244 RECIPIENT ID CODE/NAME ACTION:
TOTAL NUMBER     OP COPIES REQUIRED: LTTR                               Pf   ENCL; gj/
CRUTCHF-IELD 04 INTERNAL: AEOD ISC SYS BR 09 MPA 18 OELD 17 OR BR 12 G FILE 01 COPIES Lfl'TR EN L
7 RECIPIENT ID CODE/NAME'EN ISSUES BR13 ILE 06 NRC PDR 02 OP EX EVALl BR11, POHER SYS BR 14 COPIES LTTR ENCL'XTERNAL:
ACRS NSIC 16 05 16 1
LPDR 03
~EF'e tgao o
TOTAL NUMBER OP COPIES REQUIRED:
LTTR Pf ENCL; gj/


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/I/I/I///IIII ROCHESTER GAS AND ELECTRIC CORPORATION o
  >'igjje               IIIIIIIII 5;'IIII//8
89 EAST AVENUE, ROCHESTER, N,Y. 14649 LEON D. WHITE, JR.
                      /I/I/I///IIII ROCHESTER GAS AND ELECTRIC CORPORATION                     o 89 EAST AVENUE, ROCHESTER, N,Y. 14649 LEON D. WHITE, JR.                                                                     TCI.CPHONC VICE PRESIOCNT                                                              ARCA COOC 7ld 546-2700 September 3, 1980 Office of Nuclear Reactor Regulation Attention: Mr. Dennis.M. Crutchfield, Chief Operating Reactors Branch No. 5 U. S.                 Nuclear Regulatory Commission Washington, D.C.                             20555
VICE PRESIOCNT TCI.CPHONC ARCA COOC 7ld 546-2700 September 3,
1980 Office of Nuclear Reactor Regulation Attention:
Mr. Dennis.M. Crutchfield, Chief Operating Reactors Branch No.
5 U.
S. Nuclear Regulatory Commission Washington, D.C.
20555


==Subject:==
==Subject:==
Degraded Grid Voltage, Generic Review
Degraded Grid Voltage, Generic Review


==Dear Mr.                           Crutchfield:==
==Dear Mr. Crutchfield:==
 
In response to your August 11, 1980 request for additional information the following is provided for your use in completing your generic study.
In response to your August 11, 1980 request for additional information the following is provided for your use in completing your generic study.
All low-volta'ge, 125 volt, AC Class IE buses at. Ginna Station are supplied from either an uninterruptable power source (UPS) or from regulated 480/125 volt transformers.                               Thus these 125V IE buses are not susceptible to variations in offsite source voltage levels. In this way the reguirements of GDC-13 are met. The instrumentation and/or controls supplied by these IE buses will perform over their anticipated ranges during the offsite voltage ranges established in our December 6, 1979 report. For this reason, the 125 volt Class busses were not modeled in the Ginna interactive load flow program and no calculations were performed on         this                 system.
All low-volta'ge, 125 volt, AC Class IE buses at. Ginna Station are supplied from either an uninterruptable power source (UPS) or from regulated 480/125 volt transformers.
Thus these 125V IE buses are not susceptible to variations in offsite source voltage levels.
In this way the reguirements of GDC-13 are met.
The instrumentation and/or controls supplied by these IE buses will perform over their anticipated ranges during the offsite voltage ranges established in our December 6,
1979 report.
For this
: reason, the 125 volt Class busses were not modeled in the Ginna interactive load flow program and no calculations were performed on this system.
Sincerely, L. D. Whi e, Jr.
Sincerely, L. D. Whi e, Jr.
POI5 5
POI5 5/o SI909OSS PL J
                                                                                                                /o SI909OSS                   PL J


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Latest revision as of 11:56, 8 January 2025

Responds to NRC 800811 Request for Info Re Generic Review of Degraded Grid Voltage.All low-voltage,125-volt Ac Class IE Buses Are Supplied from Either Uninterruptable Power Source or Regulated 480/125-volt Transformers
ML17250A540
Person / Time
Site: Ginna Constellation icon.png
Issue date: 09/03/1980
From: White L
ROCHESTER GAS & ELECTRIC CORP.
To: Crutchfield D
Office of Nuclear Reactor Regulation
References
TASK-08-01.A, TASK-8-1.A, TASK-RR NUDOCS 8009090513
Download: ML17250A540 (4)
v • d • e


Text

REGULATORY r

"ORMATION DISTRIBUTION SYS "M (RIDS)

ACCESSION NBR: 8009090513 DOC ~ DATE: 80/09/03 NOTARIZED:

NO DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Pl ant P Unit ii Rochester G

05000244 AUTH INANE AUTHOR AFFIL'IATION HHITEE L. D ~

Rochester Gas L Electric Corp.

REC IP ~ iVAME RECIPIENT AFFILIATION CRUTCHFIELDPD ~

Operating Reactors Branch 5

SUBJECT:

Responds to NRC 800811 request for info. re generic review of degraded grid,voltage.All low-voltagegi25 volt ac Class IE buses are supplied from either uniterruptable power soUrce or regulated 480/125-volt transformers'ISTRIBUTION CODE:

A DIBS COPIES RECEIYED:LiTR g'NCL Q SIZE I TITLE: Onsi te Emer gency Power Systems NOTES:1 copy:SEP Sect.

Ldr.

05000244 RECIPIENT ID CODE/NAME ACTION:

CRUTCHF-IELD 04 INTERNAL: AEOD ISC SYS BR 09 MPA 18 OELD 17 OR BR 12 G FILE 01 COPIES Lfl'TR EN L

7 RECIPIENT ID CODE/NAME'EN ISSUES BR13 ILE 06 NRC PDR 02 OP EX EVALl BR11, POHER SYS BR 14 COPIES LTTR ENCL'XTERNAL:

ACRS NSIC 16 05 16 1

LPDR 03

~EF'e tgao o

TOTAL NUMBER OP COPIES REQUIRED:

LTTR Pf ENCL; gj/

0 a

'P 4

e

> I 4

F st "fs

I tg f

II C

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n

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~/ //IIIIIII/l/III I/I/IIIIIII

. >'igjje IIIIIIIII 5;'IIII//8

/I/I/I///IIII ROCHESTER GAS AND ELECTRIC CORPORATION o

89 EAST AVENUE, ROCHESTER, N,Y. 14649 LEON D. WHITE, JR.

VICE PRESIOCNT TCI.CPHONC ARCA COOC 7ld 546-2700 September 3,

1980 Office of Nuclear Reactor Regulation Attention:

Mr. Dennis.M. Crutchfield, Chief Operating Reactors Branch No.

5 U.

S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

Degraded Grid Voltage, Generic Review

Dear Mr. Crutchfield:

In response to your August 11, 1980 request for additional information the following is provided for your use in completing your generic study.

All low-volta'ge, 125 volt, AC Class IE buses at. Ginna Station are supplied from either an uninterruptable power source (UPS) or from regulated 480/125 volt transformers.

Thus these 125V IE buses are not susceptible to variations in offsite source voltage levels.

In this way the reguirements of GDC-13 are met.

The instrumentation and/or controls supplied by these IE buses will perform over their anticipated ranges during the offsite voltage ranges established in our December 6,

1979 report.

For this

reason, the 125 volt Class busses were not modeled in the Ginna interactive load flow program and no calculations were performed on this system.

Sincerely, L. D. Whi e, Jr.

POI5 5/o SI909OSS PL J

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