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PSE&G RESEARCH CORPORATION

RESEARCH AND TESTING LABORATORY

· MAPLEWOOD, NEW JERSEY

FEED~\TATER HAMMER TEST NO. 21 FEEDWATER PIPING SALEM GENERATING STATION

ra1121ao338 811203 ! PDR ADOCK 05000311. '. p · PDR·

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PSIOCJ 4teseareh Corpora•m ; i

RESEARCH AND TESTING LABORATORY REPORT

To the. Manager -· Salem Generati~g Station - PSE&G

August 12, 1981

No. 66268

Attention: Mr. Wo Schell

FEEDWATER HAMMER TEST, NO. 2~ FEEDWATER PIPING - SALEM GENERATING STATION

INTRODUCTION

The displacement on 3 axes of No. 21 Feedwater piping at two ha~gers, FWH 21-17 and FWH 21-18 was determined and the dynamic pressure ~esponse at drain valve 21BF-58 was recorded during the 50% power trip test of Unit No. 2, on July 23, 1981. ·

SUMMARY

The instrumentation for the feedwater hammer test was in accordance with the procedure .(Appendix A attached).

Upon co9rdinating with the Control Room and seconds before ·· 1.nitiating the 50% power trip, the instrtimentation recorder was

energized. ·

The first s~gn of movement was after the recorder was energized 23 secopds with a deflection of 0.02 inches (Figure 1). The move-ment was sinusoidal and lasted 15 seconds with.the maximum peak to peak movement of approximately 0.35 inch on the Z axes at both loca,tions and· a frequency of 3. 33 Hz (Figure 2) .. After that the piping was motionless for 20 seconds, then the thermal movement· of the pipe was the only movement noted for the duration of the test (Figure 4). The Z C!XeS is the longitudinal direction of the pipe at.hanger FWH 21-17 and perpendicular to the pipe at rwH ~l-18.

-There was no dynamic pressure response at drain valve 21BF-58 noted on the recorder.

Appendix B is the·· calibration data of the equipment used in ·the test.

~~~e~ //£L. Manager Materials Division

GD:jg

CC Mr. W. Schell, Salem Gen. Sta. Mr. R. Kirk; E~9g. _& Constr •

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UNITED STATES · · NUC.R REGULATORY COMMISSION

WASHINGTON, O. C. 20555

Docket No.: 50-311

Mr. -R. L. Mi ttl, Genera 1 Manager Licensing and Environment

Energ~ Supply and Engineering Public Service Electric and Gas 80 Park Plaza, Tl7A Newark, New Jersey 07101

Dear Mr. Mi·ttl:

JUN 2 5 1981 · ·

~GR.-ftUtLl._R OP(

.~.t:>.c rn-r~u:::L us:. tlc'E::sa.:u u.:.:..1s:;.;~ 1-1.:> E~\·t~.r.:.:;.:~~ . . E.. /...· ·l.)!:8~ :.

~ia ••..•• ;:%~_(;-::-_ ... : ..• TIONS JUN 30128\

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• ~r. R. L. hittl, Ganeral Manager

cc: Richard Fryling, Jr., Esq. Assistant General Counsel Public Service Electric & Gas Company 80 Park Plaza Newark, New Jersey 07101.

Mark Wetterhahn, Esq. Conner, Koore & Cober Suite 1050 1747 Pennsylvania Avenue, Washington, o. c. ~0006 Mr. Leif J. Norrholm c/o u.· S. Nuclear Regulatory Corrmission Drawer I Hancocks 6ri99e, New Jersey 08038

JUN

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• l.O TEST OBJECTIVE

SUP 80,l

APPENDIX ~. FEEDWATER BAM!'.:t:R TEST

• fVli\STER :

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l.l To.demonstrate that the operation of the auxiliary feedwater syst~, following a plant trip at power, will not cause unacceptable feedwater hammer.

2.0 REFERENCES

2.1 Government Contact Memorandum June 19, 1978 caller - E.A. Liden, PSE&G Project Licensing Manager Agency Personal Involved: R. Stright, NRC Licensing Project Manager

2.2 NRC Letter of Review of SUP 80~1, Appendix G dated 11/7/BO R. Tedesco (Assistant Director for Li.censing, NCR) to R. Mittl (General Manager, Licensing, PSE&G).

2.3 PSE&~ Drawing 205336-A-8763, Salem Onit II Auxiliary Feedwater Piping Diagram.

3.0 PREREQUISITES

d3.l a~rA 3.2

The plant ·±s -operating at 50\ RTP. · .• ..

Inst:rumentation designated in Section 7.0 has been installed to monitor 21 Stearn Gene~ator feedwater piping at 21FWH-ll-17, 21FWB-ll-18 and 21BFSB.

117~.3.3 -.::;fJift t

The NRC has been given at least a 24 hour n~tification prior to the commencement of this -test. ( Bft-L. t111-&-.}

. !J1,f/ 3.4 communications are established between the control room and per.sonnel at the' vi.sic er.

4.0 INITIAL CONDITIONS

Mi_.·.1 · The Test Engj.neer has conducted a briefing with personnel involved in the test. 5.0 ENVIRONMENTAL CONDITIONS

5.1 The plant is at normal operating pressure and temperature.

6. 0 · ACCEPTANCE CRITERIA

6.·1 The steam generator feedring modifications shall prevent excessive vibration and

water hammer following the reactor trip. (>·e~ ~rJ::U,y £.+I) /t.F-r-&:>p., £!~ ... '5~•1i. P-tv~N/Yi. )

Salem Unit 2 Page 70 of 71 SUP 80.l Appendix G

7. r.; SPECIAL EQUIPME,_ .

7.1 Visicorder

7.2 i,inear Displacement Transmitter (1) (for monitoring 21FWH-ll-17 and 21FWH-ll-l8 in the X-Y-Z direction) (2)

(3) ~

(4)

(5)

(6)

.7. 3 Accelerometer

7.4 Pressure Transmitter (time constant less than .039 seconds

· range _of 0-3000 psi installed at 21BF58)

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CALIBRATION DATE

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s.o DATA COLLECTION

S.l Visicorder traces shall be collected and retained with the procedur~.

9.0 PRECAUTIONS

·9.1 During the injection of.auxiliary feed.water following the reactor trip do not allow the reactor coolant system t~ be cooled at a rate greater than 100°F

per hour.

10. 0 ·llE'!'llLEn: PROCEDURE

\ "1t'J 10.l Start the visioorder and verif> tlie."cortect inpuf Of the parameters being monitor-~10.2 1J.t'O 10.3

ryJl610.4 (11%

. J/xJ '"1')i!f 10. 5

Trip the reactor in accordance with SUP 80.l, NSSS Sequence Document.

Following the plant trip verify tl\e Auxiliary Feedwa~er ""Pumps start and adjust auxiliary feedwater flow to each steam generator to 44·0 gpm (220,000

lbm/hr) 0

Maintain the flow until the feedwater ring in each steam generator i$ covered

narrow range indication).

Stop the visicorder and evaluate the traces to determine the degre~ of vibration and water hammer recorded at the monitored locations.

Salem Unit 2 Page 71 of 71 SUP. 80.l

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Jfij10.• • Adjust Auxiliary Feedwater flow as required to allow .torin~ generator water levels above the LOW LEVEL alarm setpoint·wh3' · ... , steam . · .• :ii ting plant cooldown below 547°F.

11.0 TEST COMPL~TION

11.l comments

· ll.2 Senior Shift Supervisor=~ , Test Engineer --~ QA surveillance ~

ll.3 Chan~es in the SPM required as a result of the test necessU)' correction initiated._ \'\,l ~

0peratin __ g~E_n_;} neer

Page7lA of 71 Salem Unit 2

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have been noted and

oate

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Rev. No.

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•. PENDIX A

RESEARCH AND TESTING LABORATORY

,uft ~--~

Procedure For Feedwater Hammer Test

No.21: Feedwater Hangers FWH-21~17 and FWH-21-18

·May 15, 1981

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RESEARCH AND TESTING LABORATORY ·PSE&G - SALEM

Prcp.:ircd By

Approved Date By

S-IS-~I

Reviewed Da~.e By Date

5//7/tf'/ w. Schell 6/81

L

---.. .·

• Procedure for Feedwater Hammer Test No. 2i Feedwater Hangers FWH-21-17· and FWH-21-18

1.0 Scope

Rev. 0 Page -1 .of 3 5/15/81

1.1 This procedure provides· for displacement measurement of three axes on two feedwater pipe hangers (No. FWH-21-17 an_d FWH-21-18) and also the dynamic pressure response at · · drain valve 21BF-58 during a 50% power trip of Unit 2, Salem Generating Station.

2.0 Reference

2.1 Nuclear Regulatory Commission letter dated Nov. 7, 1980 (Appendix A)

2.2 Schaevitz Engineering· LVDT.Handbook

2.3 PCB Piezotronics Operating Instruction Manual

2.4. SE6008 U.V. Recorder Instruction Manual ·(Di·rect writing oscillograph)

3.0 Responsibilities .. 3.1 Mater1als Division Test Engineer has the responsibility of

performing the field testing, evaluation of the test data, and the accuracy _of .the test ec;piipment.

3~2 · Materials D~vision Technician is responsible f~r assisting the Test Engineer in performing the tests.

3.3 \ .

PSE~G Production Departm~pt is responsible for coordinating the test.

4.0 Procedure

· 4·.1 To dete"rmine the displacement of the hangers, linea_:r; variable differential transformers (LVDT) were installed on three axes as shown in Figure 1 for hanger FWH-21-17 and Figure 2 for FWH-21 ·.18.

4.2 The design_change requ~st (App~ridix B) was used to install the brackets.

.•

. < -It. -Rev. 0 Page 2 of 3·

5/15/81

4.0 Procedure (cont'.d)

4.3 Instrumentation cables from the containment passed through Penetration· 2-56. (ILRT Terminal) Terminal Box JX159. Between columns B6 & B7 El. 130 containment and relay __ . _ control area. As.-per drawing 218520A 1440.

LVDT· No.

1

y 2

·z. 3

Fw:H- 21-18 x 4

y 5

z 6

·Pressure Valve 21BF-~8

5.0 Instrumentation·

Terminal Nos.

1 23Tl 1 23Pl 2 23Tl 2 23Pl 3 23Tl 3 23Pl 4 23Tl 4 23Pl 5 23Tl · 5. 23Pl 6·23Tl 6 23Pl 7 ~3Tl 7 2~Pl

2

3

4

5·

6

7

5.1 Linear Variable Diffe~ential Transformers Scha€vitz Engineering Model PCA 117-1000 + 1.00.inch, with SMS signal conditioning module. ~

LVDT's.were.calibrated using calibration stand and dial micrometer CAL-41S 1-584

5. 2 PCB Pie.zotronics Inc., Quartz Pressure Transducer Model ll2A/62 Sensitivity 1.0 pC/Psi Rise Time. 2µsec. Pressure range 3000 psi Temperature range +_400F

5.3 PCB Piezotronics Inc. charge amplifier Model 462A.

5. 4 Fluke Model 8375A.Digital Multiin"eter

5.5 SE6008 u.v. Direct Writing Osciilograph

.··

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•, .It ·e · Rev. O

Page 3 of 3 5/15/81

6.0 Test Methods

\

6.1 The displacements of the three axes of both hang~rs and the dynamic pressure pulsation at drain valve 21BF-58 will be recorded at a speed of SOOmm/min. on a osc.ill9~ graph while the unit is at 50% power. Upon coordination with the control room the speed of the oscillograph will be increased to SOOnun/sec. for the trip. After the trip. is complete and the data is steady the recorder speed will be returned to SOOmm/min. for after test data •

. 6.2 A report will be issued with the results of the test •

. .

It. FIGURE 1 ~ ·INSTRUMENTATION BRACKETS

FEEDWATER HANGER FWH-21-i7

\ X-LVDT

-i~T· . ·I I . 11 !

S • H !" --~t---~-·

L. V. D. T. Target ·P;late. L.V.D.To Support Bracket pri.ng anger __ _....

F~H 21-17 --~ ~

'.) Z-LVDT ----4----~~=l+-'/ ,. I

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Feedwater Pipe Approx. 14~·o~n.· ·

1·:.

1--------Restraint 21FWR-6

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INSTRUMENTATION BRACKETS FEEDWATER HANGER FWH-21-18

Y-LVDT I . ; .

Spring Hanger FWH 21-18

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" It. APPENDIX B

CALIBRATION DATA

' . . PS~~(1st1:tre.l1 (;orp()rtfi«)D RESEARCH AND TESTING LABORATORY.

TEST DATA SHEET

TEST ORDER NO. --"""'&,'--'t;.,=-=,;2"--=(D;....;g-..._ _____ TEST PROCEDURE IDENT. ----------

DATE OF TEST 7- ..:21 - k / PERFORMED AT )i;;ikm f./nc.f~ _.A/£&./.,..~ Ci--en~l"e;.._-f-, n;i _f 6-v..-f, o,...,

DESCRIPTION OF MATERIAL-------------------ro'-1------·-\.

MATERIAL RECEIVED FROM-------------------------

TEST RESULTS . - -

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TEST DATA SHEET '

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TEST EQUIPMENT USED & CALIB. DUE DATE:

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RESEARCH AND TESTING LABORATORY

ATTACHMENT 2

PRESSURE GAGE CALIBRATION DATA

Performed for M q fe ti~ /r D t .V.IS l~h Location of Test ___ E__,U=--0-.;_ ...... · _____________ T.est No. ___ _

Test Procedure Identification /£U.. D. Test Date 7/20/21 Description of Test Item Pr-e ss (J t' ~ fu 1t s JtA.c-et- Gage No. ___ _ Manufacturer __ .....,,P_C __ B.__ ______ Model /90 I Accuracy I% P.S.

Standard Pressure J ~

PSI Up

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200 2.. 3 y . .. -

300 3 . '-J '6 '-)00 l.{.~4

soo. 5.

. ·- . . . ·,

·-

·. -

RESEARCH AND TESTING LABORATORY

ATTACHMENT 2

PRESSURE GAGE CALIBRATION DATA

Performed for Ma f-e ,,.,~ /r D /II; s tO Yl · Location of Test __ E. ....... '-"V~ ....... Dc.......;,..• ___________ Test No. ___ _

Test Procedure Identification E. lJ.D .. Test D~te 7/?,o/f'/ Description of Test Item. Pres.Syre Tro11..rc/uc-e1- Gage No. ___ _

Manufacturer PC 8 Model /'?o I Accuracy / %r S -~.'--~---------~

Standard GAGE READING Pressure

.; PSI -~ ,.

PSI Up Down Average Correction

/000 . 5. s Cf s.

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