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| issue date = 10/14/1981
| issue date = 10/14/1981
| title = Discusses long-term Operability of Deep Draft Pumps,In Response to NRC 810813 Ltr.Original Installation of Pumps Is Adequate.Pump & Valve Inservice Insp Program Requirements for Vibration Surveillances Are Satisfactory
| title = Discusses long-term Operability of Deep Draft Pumps,In Response to NRC 810813 Ltr.Original Installation of Pumps Is Adequate.Pump & Valve Inservice Insp Program Requirements for Vibration Surveillances Are Satisfactory
| author name = CURTIS N W
| author name = Curtis N
| author affiliation = PENNSYLVANIA POWER & LIGHT CO.
| author affiliation = PENNSYLVANIA POWER & LIGHT CO.
| addressee name = TEDESCO R L
| addressee name = Tedesco R
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| docket = 05000387, 05000388
| docket = 05000387, 05000388
Line 16: Line 16:


=Text=
=Text=
{{#Wiki_filter:R=GULJRYivFOR~ATrnV DISTRTBUTI SYSTEV(RIDSiACCKSSIOV VSR:8110160462'OC
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~DATKi:81/10/14VOTARIZEO:
RECIP, VAM
NOFACILi:50-387 Susquehanna SteamElectricStationiUnit1,Pennsylve 50398Sgsquehannai Steam"ElectricStationiUnit2PPennsylva AUTHi.NA'41EI AUTHOR'FFILI.Al'"IONCURTIS'o4~Pennsylvania.
                  ~
PowerE,Light'o.RECIP,VAMIRECAPIKVi'FFIl.IAT'IOVTEDESCOPR
I                      RECAP IKV      i'FF    Il.IAT'IOV TEDESCOPR    ~ Lt,                           Assistant Director fori Licensing SUBJ=CT:     Discusses'~1 ong. term ooer aoi i ty of deco dr af t pum ps i  1                                                          p response. to NIiC 810813 1tr.Or igfnal installation                                                                          oumos i s n'f adequate ~ Pump                           % valve iniservi ce inso or ogrami requ ir ements for vibrati on survei ances ar ei sat i sfactor y
~Lt,Assistant DirectorforiLicensing 30CKKT'050003870.0SUBJ=CT:Discusses'~1 ong.termooeraoi1ityofdecodraftpumresponse.
                                                                                                                                                    ~
toNIiC8108131tr.Origfnalinstallation adequate~Pump%valveiniserviceinsoorogramirequforvibrationsurvei11ancesareisatisfactory~OISTRISJTISNCOOii:B021S'OPIES'EC=EVEO.LTR J,'NCLQTITL=i"'otrespondcncei forOperating.
1 1                                                          ~
LVonOperating Facile40TES:IWK,:3 ccodesFSARi4allamends.LPDR:2cys IB,K::3coniesFSARi4allamends.LPOR:2'ys pspin'foumosisirementsSIZE".:~ty(ei,g.VorthAnn0509038705000388ACTION<ECIoIKNT''iI COOK/IVAM"-ILI'R&#xb9;2'C04ST'ARKpRI,05COPIESLTTREVCLi1i1RKCIPIEIVT.IDCOOK/NAME L'ICBR&#xb9;2LACOPTKSLTTR':NCL 1INT'ERNAI 1ACCORD1VALBABBCHEMEVGBRi09'OREPKRFBR11DIR'iLICEVBING.EL',GKJSCIKNBRi15HU'4'ACiT'NG8RIIa"'YSBR18IE'/EPDBlLICGUIDBR'NATLEVG.BR'0MPAOPLIC8RIPOHERISYSBR21QASR231RE'ACSYSBRI25,SIJTIANAL.BRz261.11114111111111111AUXSY3BR08CONT'YSBR10OIR'pHUMFACS12'FFTR'YSBR13EQUIPQUAlBR14'iUM''ACT'NG 16'YD'/GEO BR17ILE'7IE/KPL8'iIC'QUAL BR'NlKCHKNGBR20'VRR'/OSI'O/RSOR1ASSESSBR.ROC/TST'EV 22'SSESSBR243FI.OiSTRUCTKNGBR27111111111111133331111111i1iEXlERNALc ACR8LPOR148'IC29'30611661FKMA~REPOIVVRCPOR'2'4'T IS1111.1OC~>0c'ITOTAL,VUMBERi OFCOPIES'EQUIRED!:
OISTRIS JTISN COOii: B021S'OPIES'EC=EVEO.LTR J,'NCL
L~TTRENCl,5  
            "'ot  respondcncei for Operating. L Von Operating Facile ty (ei,g. Vorth Ann Q  SIZE".:
TITL=i 40TES:IWK,:3 ccodes                          FSARi 4      all    amends.LPDR:2cys                                                               05090387 IB,K::3              conies          FSARi 4      all    amends.LPOR:2'ys                                                               05000388
                  <ECIoIKNT''iI COPIES                  RKC I P        I EIVT                          COPTKS COOK/IV AM"-I                LTTR E VCLi            .ID COOK/NAME                                    LTTR':NCL ACTION        LI          'R &#xb9;2'C                  04            1        i      L'IC BR            &#xb9;2  LA                          1 ST'ARK            p RI,            05            1 INT'ERNAI 1 ACCORD                1VAL        BABB            1.               AUX SY3 BR                          08                1          1 CHEM EVG BRi                        09            1                CONT'YS                BR          10              1          1 PKRF          BR 11  'ORE 1                OIR'p HUM FAC                                        1          1 TR'YS S12'FF DIR'i LI CEVBING.                                 1                                            BR13                      1          1 EL',                                               1                EQUIP QUAl BR14                                      1          1
                                                                                  'iUM''ACT'NG GK JSCIKN BRi 15 HU'4' A CiT' NG 8RI Ia"'YS I E'/E P D Bl BR          18 4
1 1
1 ILE'7 IE/KPL8'iIC'QUAL BR            17 16'YD'/GEO 1
1 3
3 1
3 3
LIC GUID                                          1                                        BR                            1          1 EVG. BR'0 BR'NATL 1                'NlKCH KNG BR                      20                1          1 MPA                                                1                'VRR'/OS          I'O/RS                            1 OP            LIC    8RI                          1                OR1 ASSESS              BR                          1 POHERI SYS BR 21                                  1                . ROC/TST'EV                                         1 QA            SR                    231          1                                            BR24    22'SSESS i
RE'AC SYS                BRI        25,          1        1          3 FI .                          Oi                1 SIJTI ANAL. BRz                      26            1                STRUCT KNG BR27                                      i EXlERNALc ACR8                                    29'3        16        6      FKMA~REP OIV                                          1          1 LPOR                                                                VRC                                                  1 IS POR'2'4'T 148'I C                              0  61        1                                                                      1        .1 OC~ >0 c'I TOTAL,VUMBERi OF COPIES'EQUIRED!:                                     L~TTR              ENCl,           5


Pennsylvania Power8LightCompanyTwoNorthNinthStreet~Allentown, PA18101~215/770.5151NormanW.CurtisVicePresident-Engineering
Pennsylvania Power                8  Light Company Two North Ninth Street  ~ Allentown, PA 18101 ~ 215/ 770.5151 Norman W. Curtis Vice President-Engineering & Construction-Nuclear 21 5/ 770-5381 October 14, 1981 Mr. Robert L. Tedesco                                                          Docket Nos. 50-387 Assistant Director for Licensing                                                              50-388 Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 SUSQUEHANNA STEAM ELECTRIC STATION LONG TERM OPERABILITY OF DEEP DRAFT PUMPS ER 100450                                  FILE 841-2 PLA-944
&Construction-Nuclear 215/770-5381October14,1981Mr.RobertL.TedescoAssistant DirectorforLicensing DivisionofLicensing OfficeofNuclearReactorRegulation U.S.NuclearRegulatory Commission Washington, D.C.20555DocketNos.50-38750-388SUSQUEHANNA STEAMELECTRICSTATIONLONGTERMOPERABILITY OFDEEPDRAFTPUMPSER100450FILE841-2PLA-944


==DearMr.Tedesco:==
==Dear Mr. Tedesco:==
InresponsetotheAugust13,1981letterontheLongTermOperability ofDeepDraftPumpswhichdividedtherecommended actionsintoinstallation instructions andtestingprocedures, Pennsylvania PowerandLightCompanyhasreviewedtheconcernsraisedandhasreachedthefollowing conclusions.
 
Theoriginalinstallation ofthedeepdraftpumpsonsiteisdeemedadequate.
In response to the August 13, 1981 letter on the Long Term Operability of Deep    Draft Pumps which divided the recommended actions into installation instructions and testing procedures, Pennsylvania Power and Light Company has reviewed the concerns raised and has reached the following conclusions.
Theprocedures usedfortheinstallation areavailable onsiteforIEInspector review.Theseprocedures ensuredinstallation waswithinthemanufacturers.
The original installation of the deep draft pumps on site is deemed adequate.
tolerances.
The procedures used for the installation are available onsite for IE Inspector review. These procedures ensured installation was within the manufacturers.
Further,thesepumpshaveoperatedwithoutincident, asdescribed laterinthisletter.Pumpremovalandreinstallation forthesolepurposeofverifying properinstallation isunnecessary.
tolerances. Further, these pumps have operated without incident, as described later in this letter. Pump removal and reinstallation for the sole purpose of verifying proper installation is unnecessary.                     Deep draft pump assembly and disassembly maintenance procedures             will    be revised to include steps similar
Deepdraftpumpassemblyanddisassembly maintenance procedures willberevisedtoincludestepssimilar'totherecommended guidelines statedinthesubjectletter.However,opticalalignment toassuremaximumstraightness andconcentricity oftheassemblyisunnecessary.
      'to the recommended guidelines stated in the subject letter. However, optical alignment to assure maximum straightness and concentricity of the assembly is unnecessary. Dial indication alignment checks                    will  be performed. Additionally, the pump-tomotor flange parallelism and shaft perpendicularity checks                          will be included.         Construction of the sumps for the deep draft pumps has also been completed.         Pump testing has been performed to verify the absence of fluid anomalies, such as vortexing'r turbulance, in the suppression pool near, the Residual Heat Removal Pump intakes and the Core Spray Pump intakes.
Dialindication alignment checkswillbeperformed.
    , The    three phase testing program proposed to ensure pump operability and to determine bearing wear trends is considered unadvisable at this time. This posture is based on the pumps having previously experienced a considerable number of operating hours without difficulty. Further, the potential problems
Additionally, thepump-tomotor flangeparallelism andshaftperpendicularity checkswillbeincluded.
                                                                                                            //Q SiiOih0462 SiiOi4 PDR ADGCK        05000387      .
Construction ofthesumpsforthedeepdraftpumpshasalsobeencompleted.
PDR
Pumptestinghasbeenperformed toverifytheabsenceoffluidanomalies, suchasvortexing'r turbulance, inthesuppression poolnear,theResidualHeatRemovalPumpintakesandtheCoreSprayPumpintakes.,Thethreephasetestingprogramproposedtoensurepumpoperability andtodetermine bearingweartrendsisconsidered unadvisable atthistime.Thispostureisbasedonthepumpshavingpreviously experienced aconsiderable
 
//Qnumberofoperating hourswithoutdifficulty.
Mr. Robert L. Tedesco Page 2'ctober 14, 1981 PLa-944 associated with repeated disassembly/reassembly outweigh the beneficial effects of such checks. PP&L considers the Pump and Valve Inservice Inspection Program requirements for vibration surveillances using contact probes satisfactory for trend determination. This data will be taken monthly and observance of abnormal        vibration or wear will initiate consideration of testing similar to that described in the subject letter.
Further,thepotential problemsSiiOih0462 SiiOi4PDRADGCK05000387.PDR Mr.RobertL.TedescoPage2'ctober14,1981PLa-944associated withrepeateddisassembly/reassembly outweighthebeneficial effectsofsuchchecks.PP&Lconsiders thePumpandValveInservice Inspection Programrequirements forvibration surveillances usingcontactprobessatisfactory fortrenddetermination.
N. W.     Curtis Vice President-Engineering       6 Construction-Nuclear CTC/mks}}
Thisdatawillbetakenmonthlyandobservance ofabnormalvibration orwearwillinitiateconsideration oftestingsimilartothatdescribed inthesubjectletter.N.W.CurtisVicePresident-Engineering 6Construction-Nuclear CTC/mks}}

Latest revision as of 00:42, 22 October 2019

Discusses long-term Operability of Deep Draft Pumps,In Response to NRC 810813 Ltr.Original Installation of Pumps Is Adequate.Pump & Valve Inservice Insp Program Requirements for Vibration Surveillances Are Satisfactory
ML18030A352
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 10/14/1981
From: Curtis N
PENNSYLVANIA POWER & LIGHT CO.
To: Tedesco R
Office of Nuclear Reactor Regulation
References
PLA-944, NUDOCS 8110160462
Download: ML18030A352 (4)
v • d • e


Text

R=GUL JRY ivFOR~ATrnV DISTRTBUTI SYSTEV (RIDSi ACCKSSIOV VSR:8110160462'OC ~ DATKi: 81/10/14 VOTARIZEO: NO 30CKKT' FACILi:50-387 Susquehanna Steam Electr ic Stationi Unit 1, Pennsylve 05000387 50 398 Sgsquehannai Steam" Electric Stationi Unit 2P Pennsylva 0 .0 AUTHi.NA'41EI AUTHOR'F FILI.Al'"ION CURTIS'o 4 Pennsylvania. Power E, Light'o.

RECIP, VAM

~

I RECAP IKV i'FF Il.IAT'IOV TEDESCOPR ~ Lt, Assistant Director fori Licensing SUBJ=CT: Discusses'~1 ong. term ooer aoi i ty of deco dr af t pum ps i 1 p response. to NIiC 810813 1tr.Or igfnal installation oumos i s n'f adequate ~ Pump  % valve iniservi ce inso or ogrami requ ir ements for vibrati on survei ances ar ei sat i sfactor y

~

1 1 ~

OISTRIS JTISN COOii: B021S'OPIES'EC=EVEO.LTR J,'NCL

"'ot respondcncei for Operating. L Von Operating Facile ty (ei,g. Vorth Ann Q SIZE".:

TITL=i 40TES:IWK,:3 ccodes FSARi 4 all amends.LPDR:2cys 05090387 IB,K::3 conies FSARi 4 all amends.LPOR:2'ys 05000388

<ECIoIKNTiI COPIES RKC I P I EIVT COPTKS COOK/IV AM"-I LTTR E VCLi .ID COOK/NAME LTTR':NCL ACTION LI 'R ¹2'C 04 1 i L'IC BR ¹2 LA 1 ST'ARK p RI, 05 1 INT'ERNAI 1 ACCORD 1VAL BABB 1. AUX SY3 BR 08 1 1 CHEM EVG BRi 09 1 CONT'YS BR 10 1 1 PKRF BR 11 'ORE 1 OIR'p HUM FAC 1 1 TR'YS S12'FF DIR'i LI CEVBING. 1 BR13 1 1 EL', 1 EQUIP QUAl BR14 1 1

'iUMACT'NG GK JSCIKN BRi 15 HU'4' A CiT' NG 8RI Ia"'YS I E'/E P D Bl BR 18 4

1 1

1 ILE'7 IE/KPL8'iIC'QUAL BR 17 16'YD'/GEO 1

1 3

3 1

3 3

LIC GUID 1 BR 1 1 EVG. BR'0 BR'NATL 1 'NlKCH KNG BR 20 1 1 MPA 1 'VRR'/OS I'O/RS 1 OP LIC 8RI 1 OR1 ASSESS BR 1 POHERI SYS BR 21 1 . ROC/TST'EV 1 QA SR 231 1 BR24 22'SSESS i

RE'AC SYS BRI 25, 1 1 3 FI . Oi 1 SIJTI ANAL. BRz 26 1 STRUCT KNG BR27 i EXlERNALc ACR8 29'3 16 6 FKMA~REP OIV 1 1 LPOR VRC 1 IS POR'2'4'T 148'I C 0 61 1 1 .1 OC~ >0 c'I TOTAL,VUMBERi OF COPIES'EQUIRED!: L~TTR ENCl, 5

Pennsylvania Power 8 Light Company Two North Ninth Street ~ Allentown, PA 18101 ~ 215/ 770.5151 Norman W. Curtis Vice President-Engineering & Construction-Nuclear 21 5/ 770-5381 October 14, 1981 Mr. Robert L. Tedesco Docket Nos. 50-387 Assistant Director for Licensing 50-388 Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 SUSQUEHANNA STEAM ELECTRIC STATION LONG TERM OPERABILITY OF DEEP DRAFT PUMPS ER 100450 FILE 841-2 PLA-944

Dear Mr. Tedesco:

In response to the August 13, 1981 letter on the Long Term Operability of Deep Draft Pumps which divided the recommended actions into installation instructions and testing procedures, Pennsylvania Power and Light Company has reviewed the concerns raised and has reached the following conclusions.

The original installation of the deep draft pumps on site is deemed adequate.

The procedures used for the installation are available onsite for IE Inspector review. These procedures ensured installation was within the manufacturers.

tolerances. Further, these pumps have operated without incident, as described later in this letter. Pump removal and reinstallation for the sole purpose of verifying proper installation is unnecessary. Deep draft pump assembly and disassembly maintenance procedures will be revised to include steps similar

'to the recommended guidelines stated in the subject letter. However, optical alignment to assure maximum straightness and concentricity of the assembly is unnecessary. Dial indication alignment checks will be performed. Additionally, the pump-tomotor flange parallelism and shaft perpendicularity checks will be included. Construction of the sumps for the deep draft pumps has also been completed. Pump testing has been performed to verify the absence of fluid anomalies, such as vortexing'r turbulance, in the suppression pool near, the Residual Heat Removal Pump intakes and the Core Spray Pump intakes.

, The three phase testing program proposed to ensure pump operability and to determine bearing wear trends is considered unadvisable at this time. This posture is based on the pumps having previously experienced a considerable number of operating hours without difficulty. Further, the potential problems

//Q SiiOih0462 SiiOi4 PDR ADGCK 05000387 .

PDR

Mr. Robert L. Tedesco Page 2'ctober 14, 1981 PLa-944 associated with repeated disassembly/reassembly outweigh the beneficial effects of such checks. PP&L considers the Pump and Valve Inservice Inspection Program requirements for vibration surveillances using contact probes satisfactory for trend determination. This data will be taken monthly and observance of abnormal vibration or wear will initiate consideration of testing similar to that described in the subject letter.

N. W. Curtis Vice President-Engineering 6 Construction-Nuclear CTC/mks

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