ML20207N288

From kanterella
Jump to navigation Jump to search
Summary of 861023 Meeting W/Listed Attendees,Including Util, in Bethesda,Md Re Pump Insps During Refueling Outage. Nonproprietary & Proprietary Licensee Presentation Matl Encl.Proprietary Matl Withheld (Ref 10CFR2.790)
ML20207N288
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 01/07/1987
From: Vissing G
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 8701140100
Download: ML20207N288 (74)
v • d • e


Text

. h , 1 87 Docket No. 50-313 LICENSEE: ARKANSAS POWER AND LIGHT COMPANY FOR ARKANSAS NUCLEAR ONE, UNIT 1

SUBJECT:

SUMMARY

OF MEETING 0F OCTOBER 23, 1986, WITH AP&L CONCERNING INSPECTIONS FOR PEACTOR COOLANT PUMPS DURING REFUELING OUTAGE FOR ANO-1 Introduction At the their request, Arkansas Power and L'ight Company (AP&L) met with the staff on October 23, 1986 at the NRC offices in Bethesda, Maryland, to report

.their findings of the reactor coolant pump (RCP) inspections for Arkansas Nuclear One, Unit 1. As a result of the RCP shaft failure at Crystal River of January 1, 1986, by letter dated April 23, 1986, we requested the licensee to provide information to enable the Commission to determine whether the license for Arkansas Nuclear One, Unit 1, should be modified. The licensee responded by letters dated May 13 and September 15, 1986. The licensee indicated in the September 15, 1986, submittal that at least one pump will be dissassembled

during the refueling outage for inspection and other methods of inspection of the other pumps will be performed during the outage. This meetino reports on

'the licensee's findings of these inspections. The attendees of the meeting are identified in Enclosure 1. The licensee's presentation material is contained in Enclosure 2 which is considered to be proprietary and, there, is withheld from public disclosure per 10 CFR 2.790. A non-proprietary version of this presentation material is enclosed in Enclosure 3 and is being made publicly available.

Discussion Enclosure 2 provides a very good documentation of the subjects discussed at the meeting. The material is presented in order to keep the staff informed.

lJ f Guy S. Vissing, Project Manager PWR Project Directorate #6 Division of PWR Licensing-B Er.closu res :

As :tated g[>

k cc w/ enclosures.

See next page PWR#6 ,

aff PWR-PWR# '

GVi s GEdison l

rm  % ;JStolzVq p":8asug385,- PDR ,

. = - - - - _ .

4 (k.

PEETING

SUMMARY

DISTRIBUTION PWR PROJECT DIRECTORATE #6 p

Docket File NRC PDR L PDR PBD# Files

'JPartlow RWeller GVissing JStolz OGC EJordan BGrimes ACRS-10 RIngram NRC Participants CYCheng RJk!right WRegan DSellers

.Slee CThomas CLiang BMozafari HSilver PHum GEdison i

L

/

Mr. G. Campbell .

Arkansas Power & Light Company . Arkansas Nuclear One, Unit I cc: -

Mr. J. Ted Enos, Manager i Nuclear Engineering and Licensing -

Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203 Mr. James M. Levine, Director Site Nuclear Operations Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 Mr. Nicholas S. Reynolds Bishop, Liberman, Cook, Purcell & Reynolds 1200 Seventeenth Street, N.W.

Washington, D.C. 20036 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 2090 Russellville, Arkansas 72801 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlir.ston, Texas 76011 Mr. Frank Wilson, Director Division of Environmental Health Protection Department of Health Arkansas Department of Health 4815 West Markham Street Little Rock, Arkansas 72201 Honnrable William Abernathy County Judge of Pope County Pope County Courthouse Russellville, Arkansas 72801

m y' 4

Attendance List for Meeting WTth AP&L Concerning RCP Shaft Inspections &

October 23, 1986 ,

Name Position / Organization C. Y. Cheng NRC/PWR-B/EB R. J. Wright NRC/PWR-8/EB William Regan, Jr. NRC/PWR-B/FOR C. Mc Cracken NRC/PKP-B/PBD#6 Josh Coleman AP&L - Eng. Services John Smith AP&L - Nuc. Services

. Timothy S. McDonnell AP&L - Nuc Services J. H. Cates GE

-Dan Howard AP&L Ted Enos AP&L Dave Sellers NRC/PWP-A/EB Sam Lee NRC/PPR-A/EB Tom Cogburn AP&L-Nuclear Services Mike Hacker B&W - SPIS/NPD Jim Mokri GE-HX & Pump Design S. H. Sundaram GE James McWilliams AP&L Manager - Maintenance Shirley Bell AP&L Nuc Engr & Licensing Cecil Thomas NRC-PPRS Chu-Yu Liang NRC-PBRS Brenda Mozafari NRC/PWR-B/PBD#6 James Slider MYAPCo Martin Hum NRC/PWR-B Jerry W. Mitchem B&W/Mgr Mech Design Lynn Connor Doc-Search Associates Jim Petro Systems Engineer-BG8F-CCNPP Guy Vissing NRC/PWR-B/PBD#6 Harley Silver NRC/PWR-B/PBD#6 Gordon Edison NRC/PWR-B/PBD#6-DD Rhonda Hooaewerff Combustion Engr-Licensing Andrew Rudyk Combustion Engrg

\

,- L -

f- . ...

..  : . . ,q;; ti? '* I' *. ,. :;,y:, . ag.. e..tji ***.

. ,.,.g .

-' .N *4

..*.7 . .

-I -

ijel , -*

  • h.;-

1

..  : 1

.l

=

.- ANO-1 RCP AY;'-

s.{h. .f, ,

REVIEW NITH NRC .h

.r

. s.

v.:th. ..

? .

1%

10/2W86 .kiigi .

'"" "bi

'. ir v:4.G$' .ll$

I:

3

y. 4[r-

.g a

  • y AND br I I

~

IL

.m J JW p

- = - -- .

_ l_ _I n

w l.

u m -_

'. L $

4,

~~~

s

-~

g D[

y; ., 1 M

j

@tM .. .! . P

'[. lgl y  ;

E

'i

$ 0((1 00""# T.dO Il Q" M hb f .

f$%Gkc M i < t~.I1(dk u iN M .

QI CD0/

m 4l ARKANSAS POWER & LIGHT

. . . . . . - ...s, .

l l

AGENDA _

Introduction T.Enos Background - M G CR3 J.Srith We Wtage Evaluations T.Enos RCP Shaft UT - M. Hacker (BGW)

Analog G Enhanced GESSE Diagnost.'c Technique J.0ates (GE)

Outage RCP Workplan T.McDdnnell RCP Examination - Results T.McDdnnell NDE Visual GESSE hurnal Fillet Weld J. Seith Cycle B Performance hunitoring J.Coleman

@nclusions T.Enos

/

4 1

I

+

PURPOSE W WETING o ReYieW History of RCP Shaft, Capscrew, and Wive Pin Issues and foplicability to ANO-1 o Discuss ANO-1 Outage Activities o Inform NRC of Inspection Results o Inform NRC of Future Plans and APGL RCP Performance Monitoring Program

4 LB and CR3 BACKS 90UhD -

PRE-0UTAGE ACTIVITIES 3

I

HISTORY APGL Pre-Outage ACTIVITIES ,

ON RCPs ,

JANUARY 1986

- FPC Shaft Shears

'A' ..

- UT Identifies Shaft Failure

- FPC Removed the 'A' Rotating Assy

- APEL Spare Shaft Sent to FPC

- APSL Formed Review Team to Monitor the FPC Situation and Access Applicability to ANO

- Conference Calls Kith NRC

- FPC 'A' Shaft to LRC for Exam FEBRUARY 1986

- UT of FPC B,C,D Shafts Indicates Cracks

- APGL Spare RCP Assy Sent to FPC

- FPC 'B' Shaft Confirmed Crack, Sent to LRC

- LRC Exam of FPC 'A' Assembly Indicates Cap-screw and Drivepin Cracking

- I E Information Notice 86-19

- Began Design Study for Replacement Rotating Assemblies

A HISTmY APGL Pre-Outage ACTIVITIES W RCPs MARCH 1986 UT of TED Shafts Indicatas all Four @a::ked FPC Began Removing DGC RCP Assemblies Info Meeting TEQ FPC, APGL, BJ, BGW, GE APGL Sheared Shaf t Analyses by BGW APGL Technical Services Began Weekly RCP i Vibration Monitaring APGL Develops Detailed Plans for Refueling Outage RCP Work. Discussians W1th BGW, GE, W. BJ APRIL 1986 '

( -

TED 2-1 Shaf t Sent to LRC for Exam l

INPO Meeting l

NRC 50.54 F Letter to APGL FPC - NRC Presentation No Apparent Wack on TED 2-1 Shaf t APGL Net With GE to Discuss Related

Experiences

. - - - . - . - - , a

d HISTO 9Y APGL PRE-0UTAGE ACTIVITIES OV RCPs MA Y 1986

- FPC 'D' Shaf t Journal

  • Cut 0ff - No Wacks (Visual)

- APGL Response to NRC 50.54 F Letter

- ANI Review Concludes No Safety Concerns

- TED 2-1 Rotating Assy Installod

- FPC 'D ' Sha f t Sen t to GE for Des tructi ve EXBM

- TED 2-1 Shaf t Sent to BGW to Cut Off Journal and Dostructiec Exam JUNE 1986

- Meeting With GE - Discussed Potential Test for Cap Screw Integrity

- Issued Formal IFP for Two Plano Outage

- ANO Spara Rotating Assy Received

- Destructive Exam of FPC 'D' Shaft no Wacks

d HISTORY APGL PRE-0UTAGE ACTIVITIES ON RCPs JUL Y 1986

- BGW Selected for Tool' Development and Outage Support

- GESSE (General Electric Structural Signature Evaluation) Test Authorized

- Enhanced UT Development Authorized by TED, APGL

- Third Party Review of APGL Approach

- NRC Request for Additional Information (UT Valldity, Cap Screws Integrity)

- GE Phase I GESSE Test Complete AUGUST 1986

- GE Begins Phase II OYototype) Testing Using APGL Spara Assembly

- BGW to TED for Testing of Enhanced UT

- APGL Finalizes Outage Plans I

o

e d

HIST 09Y APGL A9E-0VTAGE ACTIVITIES QV RQos SEPTEMER 1986

- BGW Finalizes Enhanced UT Validation at TED (2 2)

- 1H7 Outage Began

- GESSE Development Comlete

- Began UT and GESSE Field Application

n

  • J RCP INSPECTION RESULTS (PRIOR to iR7)

FPC A B C D Shaf t UT: Crack Crack Crack Crack Confirmed: Y Y N/A N Capscrews: Fractured Cracked N/A Clean (Still Tensioned)

Lockwire: Broken Broken N/A N/A Drivepins: 1-Fractured 4-UT INd. N/A N/A 2-Cracked tio Visual Ind.

i 1

1 l

1 l

l l

l l

J RCP INSPECTIM MSUi.TS (PRIDR to 1R7)

Toledo 1-1 1-2 2-1 2-2 Shaft UT: Crack Crack Crack Crack Confirmed: N/A N/A No No (En-hanced UT)

Capscrews: N/A N/A 3-Cracked N/A Lockwire: N/A N/A Broken N/A Drivepins: N/A N/A Clean N/A e

e f

.g

.c

9 d

INSPECTIOV SUIN4RY a B Shafts Inspected ,

a 6 Shafts CleanM o i Shaft Broken (Capstrews Fractured) o i Shaft Cracked (Capstrews Cracked)

M 2 Joint Inspected W/1 Clean and ! With Partial Capstrew Cracking 8

- -- - - - . - - - - ...----------n~~-- -...,---.-,-,,n---- - - - . . - - _ , . - , , _ _ - , . . . - , , . - - . . , - - - , . ,

4 0

e e

d O

e*

PM-0UTAGE EVALUATIQYS

FM-WTAGE EVALUATIWS .

EAMY ACTIVITIES o Little was known About Adot Cause o Formed APGL RCP Review Team o Participated in Numerous Meetings with FPC, (

TED, BGh,' Bd GE W and NRC o Analyzed Event (Seized Rotor Generically Analyzed and Bounding for Sheared Shaft) o Information & Instructions Given to @erations o ANO-1 specific LYNX T Analysis - MBR > 1.6 o Reviewed By Safety Comittees - 1 Concern Identifled a Best Estimate Analysis Conducted for Simultaneous 2 91 aft Seizure (in same loop) to Bound Cbncern from Safety Comittees -

LWS9 > 1. 0 I

,i

p AW-MITAGE EVALUATIlW!i ,

COVCLUSIOV o Conclusion of kview Team and Safety Cdaelttees

- Maared/ Seized Maft is _ analyzed event

- No Safety Concern Existed

- Continued @eration skistifled with Shafts in Indeterminate Condition a NM Notifled Verbally and in Correspondence of Activities and Conclusions LATER ACTIVITIES o Sibsequent kviews Have Confirmed Wiginal Cdnclusions and Indicates the Wobability of p Maft Shear Events to be Mich Sneller than l Wiginally Assumed l

i l .,

1

~ ~ - - - - - - - - - ~ - - , - - , , , - - - , - - - - -

ee e

UT TEC/MIQlES AlIALOG At10 B/HN/CED

- ~ ' ~ - " ~ ~ - ~' -

4 J

RW SN4FT UT EXAMINATIOV i

BGW Woprietary

sm a m ,aa A 3 4 --

9 e

0

? 9 I

1 4

1 r

9

(

ru so N

e h

R< k

]

l 1

I I

I I.

i

h '

h 9

e s.

4 6

1 I

J e

\

O C,

t

]

=>g q

.'~nrb S  %

<s3 CJ 9

i I

i i

1 5

t i

I O

-- - - - - - ,-- . - . - - , . - - - - , , - - . . - - . - - , , - . , - - - - . . ,-nn,,- - .- .--- ,. - , ,...-,.r,--,. - -, .-

l O

e 1

I i

k D

a

- b

't s

8" =

'c A

x t

D %e t

i i

i l

_ _ _ _ _ . - . - - - - - - - - - - - - - - - ~ ~ ~ ~ ~ _ _ . _ . _ _ _ _ _ _ _

I i

, TECtNOLOGY DESCRIPTION i

1 -

1 :

I I-

l i

i 1

l  !

1 I

l i

4 l

t i

i l

i i

i i

i i

BGW PROPRIETARY

a - -

- .,a .

9 9

0 J

I i

m x

4. Ct CC D k

m 8

8 I

i a

. , , , . . . - , .,------,.----,,----,------n --w-~---m'~" ~~ '= '"""' " " ' * * ' ' " * ~ ~ ~ ' ' ~ ~ ~ ~ ' ~ '

,,-w - ~ ~ - - " ~ ~ ~ ~ ~ ~ ^

1 9

e I

I b

s A

A t.

m 42 M e n

& C.

4 A D 4:

k to i

123 I

l I

t s

, -,~.g ,---e--wrn-----eyww,r.a 7-w-- , - - - -w--m- e -- - --nw. -, .---,--

5 4

I I s

A

(

m D

1 *5 k (

. .A $

, 8 &

d n .

i I g i

i i

. , - -- ., ,y--r.. ._, -- -

m.m-,. , ' . __ , _ . -__,._,..,,?.__-~_.,,.., . - . , - . . . . - _ _ . , _ _ _ . , _ . . , _.. . _ _ _ _ _ .

t i:

ANALOG / DIGITAL UT SYSTEM COMPARISlW -

COFONENT/FEA 71RE ANALOG DIGITAL -

l Scan Nethod Manuel-Hand &ld

!- Automatic Monote)

UT 1hstrumentation l) SIP-il Frequency Source Notek

\

Pulse A mlifier Pteam Date 6000 Data Analyzer 7teneducer Activation Spiked DC Pulse Sine Wave (Variable Fre-quency, hp llInte, Ptrise Amplitude. Pttise Length)

Thensducer Angles: 0 & 70 Degrees 0 G 70 Degrees Frequencies: . 50,1. 0, 2. 25 Miz . 50,1. 0, 2.25 }0tr i Diameters: 1. 0. 1. 5 1. 0, 1. 5  :

Date Storage A-Scan Magnetic Tape i

Photograph

Signal Processing None Tomoral Avg.

Spatial Avg.

Computer Disp.

4

a 4

O e

?

BN4NCED UT ADVANTAMS -

W l

i -

M f

i l 6 ,

I BGW A90%IETARY

b M BECTRIC STRIERML SINM EVALUMIM l

GE Ph40rietary

0 O

O 3

MVELO%ENT A90Swt -

num M

GE A900RIETARY

,,g . . . . - . ._ .. _ -.___a ,1 u . _a ,- ma* - 4 .$ m i__..,a . . _ - _ _ _ , _ _ . a .. ,a 4

e

g. b o

I I

G, ESSE W e

(

l J

J f  %

I j

] .

3 f

3 I

1 I

im Ge 3 l.

1 4

M A90%IETARY i

l 1

0 0

0 GESSE .

m 9

m M

GE h oprietary

- + - - ..Aa -~_.., o _ m n - ,m- - - - - - a-----sa- - u a n - k 8

0 0

e e

GESSE m ,

m 4

4 J

e 1

1 4

t M

D E

E MlFRIETARY

1 I {

GESSE 1

t 1

l i

l J

1 _

l

]

4 I

t i

4 E MiGWIETARY  !

t 4

i

. e m ,mw~w-g,~,-- ,-en pw-r-,,wn,, ,

r,--r-~n-mrpww-,-~------ .-me,s-- -,- --r-----

9 e

0 9

- FIELD DI AGNOSTIC TEST -

mam

'M l

1 I

l l

[

l r, c ponpogrTaov gun _g L

5 GESSE GE W oprietary

r

- FIELD DIAGNOSTIC TEST -

4 TRIAXIAL ACCELEROFETERS l l TOP OF SHAFT 1 BIAXIAL IN EACH KEYWAY 8

.L -

? ~7

/ /

/ __ ___ p

?% ,A

%4 i. -

- I.

/ I

(- .. . - - . . . . - ^.

...g -y , . -. - w

';55 ~

NTQi .-

-l' f ~ ~ ' ,.

y - *.I s...}---.'1,.4s-s; i . v \

q~ ;

  • t ~-.,,r ,

IL* -'

l '- N_ a

....i

  • e , , .:. * ~.'.* -
  • t 1 . . . . _,.

e . s. J i

': . J .- ..

.E'--\ Y

.8- :8MD[f "b,, v:m

[WNY .

  1. .7 ,M, !i .

U!Q 1

J PROTOTYPE ROTATING ELEMENT JH0-8 1 n 10 7 I n t"

m e

GESSE  :

i 4

f 1

9 s

l i

I 4

P i

e l

I 4

i e

P r

f f

4 4

i 1

i E W ietary ,

a

- FIELD DIAGNOSTIC TEST -

^

GS>

r+ -

k XIN 1 -; ;r is '  !

(

. I f /

V I

(  : l 1 -

m u----  :-.s(, , .

I '

]

/

I . , ,

1

/ -

V i I Y /

/

/ /

i y-e

/

/ 8 /

/

/

/

p i /

.r ,. 5 N 5' -

k .c4M. il

. :... .~?.

t. g:l..--..et.

. .- . p. .,. . .:.

. la.. . ,. ,j

...M. .i . . 5..'

,d f .a u ,- ..< .)

tm .. ...-..:. ~.*- u .,

s

_. ' . - ,3 '.

4% ,-

. ..f..--l

c. '.

. .,, c ^ ..- ; c' :,

.i.-,. ']

r, s

. -. ,ji I -l

j. / p / .- 2 V. .'sg , L .

.. l ;i -

S &r ' .., j ?'*/,q 1. .-m l p. ,',.n. .

, .. q' . . :-~~ - .,

/."J,,j'

  • '~.*

. ~ '

1 -.a e?.,?.

' M 'O ,, } /

' Is '.'l

.y */. ,. sc.J  : 4...-?' s. .' / .

., 3; ,U.-...r s:.;': ' ~ . A -

_ ,,- / ,

. . ' ./

. - . fi ' ...:_ . c s  !?. ...'

l{i - 1 8 g.

. .'\

s .

  • '4 , '.' ..

O *9 N 7  :- r aN 3

y<$

a 4 r.,

i- - .

s N

-- N'4 _

. . r- -

p t: I* . $,f' '

'M

.. h ..

s N_%

s -

-+

fN .

IA INSTALLED PUMP SHAFT JH0-10 inin/u

d e

GESSE J

l K % rietary

GESSE l

2 l _

P E Phgorletey 1

  • 0 .$_,__________,___ _ _ _ _ _ _ _

+s e

9

  • e 4

0 I

i

i 1R7 IEFLEl.IM WTAE A03 INSFECTIG,' PLAN I

4-LEECTIVER o hterwine the Structtral Integrity of the Installed AW-1 Mactor lbolant Ptap htating Elements.

o 01sassedle and Examine the A00 With the '

Highest Likelihood of Degradation o Validate the In-Situ Inspection Methods With the As-found Condition of the Punp 01osen for Disassedly.

l \

..- l I

l

INSWCTIM SWE-IN SITU HAMINATIGG (ALL 4 RAPS)

I~

o Ultrasonic Inspection of bactor holant

! Amp 2afts o SESSE to Assess Integrity of Maft-to-Imeller hints (Cmscrews)

INSWCTIM LF RMP ODSSV FM DISASS9WY o PT of Rim Case Cover o Olsensional biecks of Major Comonents o PT of Pum 91 aft G Hydrostatic Bearing i

o Visual Inspection of Iktating Assembly and Hydrostatic Bearing

.l 0 Deterwination of Imeller-to-9saft CQscrew As-Found Preload i

o Inspection-of Qpscrews & l>1re Pins l

1 4

A

INSWCTIOV R.AN SSMNW o @erating Arrfannance G hintenance Histwies on All Four Raps Mere Satisfactory.

I o With no obvious Problem With Any he Rap, l There Was & Clear Disassembly Selection  :

L>iterion.

Disassembly Selection Mould be Based @on the

~

o

&sults of the In-Situ F.xaminations (UT G GESSFJ .

hg*

_ . _ _ -_ _-._:"-_- ^ '

4 e

MP EXAMINATIM M5uTS

UT EXAMINATIW MMR.TS

. o Analog UT of Mafts 'B', 'C', G 'D' Moved no Indications (Zero kgree & Seventy kgree

! Exam).

o Analog UT of the 'A ' Maft 90wed Two Indications at d' G 52' o Subsequent Re-examination of the 'A ' Matt with the Enhanced Digital UT Technique showed That the Indications Were hbt Characteristic of Those Indications Associated With @acks or Inclusions.

o Conclusion Was That All Four Rim 9afts Were Free of htectable Vacks.

1 I

I

- ~ - - - - - -

o SESSE 4

o &sults Were Found to be Influenced by:

Matt to Imeller Tightness hurnal F1 tup and Stiffness o Initial &sults were Conservatively Attributed to Maft to Imeller hint Stiffness i

o klative knking of Maft to Imeller l Tightness

kk l

1- . .. - _ _

MCISIQV 10 DISASSBRE 'A ' }EP

{

0 'A' Appered to have the hkst Iktential for 9taft-to-Imeller hint Degradation o 'A ' had Analog UT Indicatlans (this Offered an @portunity to Validate the Enhanced UT Finding)

- _ - . . ~ _ - _ , _ , . . _ _ _ _ _ _ _ , _ _ - - , _ _ . . _ . . _ . . _ _ _ _ _ _ _ _ . . . .

'A ' PtW INSPECTIQV M5tk.TS QV 9W2; D9IVE PIN!\ CAPSCBS CASE

, o @se @ver PT: M &ack Indication i

l o Onpscrew UT: M &ack Indications  ;

o Hydrostatic karing PT: M Indications o 91 aft PT: M Indications o Imeller To 9taft Capscrew &eakaway Torque Was > 1000 Ft-lbs For All Four Capscrews a UT &lt Elongation Measurement Confirmed that Capscrew Preload was in Excess of 1000 Ft-Lbs o After Cleanttp and klubrication the CRpscrews were kinstalled and Confitned

> 1000 Ft-Lbs '

i

.' o Wive Pin PT: M Indications I

t ..

i

l BESSE ADLASThENT B4 SED QV 'A ' PthP MStk.TS i

l l

0 BESSE ksults were Adjusted for Jatrnal Attachment Stiffness o 'A' Mtating Assembly was & tested with Partially Detensioned Bolts to Validate Adjustment o Test Confirmed GESSE can &tect & graded Shaft to Im eller ubints a SESSE Cbnfirmed the Sflatt to Iapeller Integrity an 'B', 'C' and 'D' Ptaps 4

M IMiWCTIQV MSKTS l (CIMENT) i AML A B C D 91 aft UR N N N N Conf 1raed: Y NA NA NA PT UT i

Capscrews: 'A ' ACP CapstreWs had Adequate Weload Lockwire: Intact l I l

I Wivepins: Al1 'A ' M W1vepins C1een 1

l -

SHAFT G WINT INTES9ITY IN!iWCTIQV i

SIANARY 9

No Shaft &acks Intact Cap Screws G Wivepins l

1 1

I 9  !

l

4 0

0 6

l k

1 JOURVAL FILLET WELO i

, I

ARWAL SIM PLATE FILLET NELD o Abn-A9E Fillet Weld Between the burnal '

! Sleeve and @per Side Plate Installed to Accomodate Snell Torsional Loads o Tack Weld Would have been Stifficient but Difficult to PT and Would have Formed i Oud Trap o PT F.xas Indicated 330 Degree Crack 1/3 Distance from Crown a Most W obable Causes Low Cycle Thermal Stresses Defective Weld a Wack does not Significantly Affect Structural Integrity and Wesents

,- no Safety Concern o Failure of more than 1 Weld Nould not Affect Wessure Boundary or Wesent a Safety Cdncern L - . - - -- . :- - - -_ .__-_ =._.- - _ . -

j e.

RCP JOURNAL ASSEMBLY h

N \, \. .

'\'N ,,

.M "x, 'N

  • l . .* 7 - '

l N

)\x y' '

,e

, 2s._.. Y /

71 , I/

/NN l NNV

.l. ...

/

a

/

l

! 7NN l NNN/

/h

%. /

NN

\

1 B

l t

l

o Initially Platvied to & place 'A ' Mtating Assedly -

o Schedule did not Allow Sifficient Time to Disposition hot huse of hurnal &ack o & cision nede to Install New htating Assedly in 'A ' Rim ik1til Time Allowed for Further Adot Cause Evaluation o Assedly will by Maintained as @are After Adot Cause Evaluation Cowleted l

6 I

-a e

F t

n CYCLE 8 PSF 0Qt4NCE h0VIT09ING O

I

ARKANSAS NUCLEAR ONE

- UNE 1 -

i Reactor Coolant Pump

Performance Monitoring and Evaluation I  !

O O O O l j

l

/ \

WN /V I _l I I i

_ frA _ _ _

l by Josh D. Coleman Generation Engineering October 23,1986

l htP PS7lN%VW h0VITQ9ING MDGW o Cttrently Being Iglemented for Next Cycle o Cbnsists of Hardware Additions, Additional Control Adom Indications, and Wocedure Changes o Human Factors Considerations Incorporated o Assimilates Pertinent Data for Evaluation af Pump Performance o Provides Capability of Forecasting Incipient Pump Problems i

l l

l

.g.

l 1

o The Following Are Typical Parameters Also Trended in AML 's hvised ACP Performance i knitoring WograK

- htor Current

- Ninding Temeratures

- Bearing Temeratures

- ICW Temeratures

- Various Seal Performance Variables

- RCS Temeratures

- Vibration Amlitudes and @ectral Trends I

e

RCP ON-LINE VlBRATION MONITORING SYSTEM -

BLOCK DIAGRAM

! TRANSDUCERS CONTROL ROOM RCP DATA ANALYSIS _

(TYPICAL FOR EACH PUMP)

INDICATIONS

_ _ STATION  ;

l

! o- '

DYNAMIC DATA MANAGER SYSTEM SURFACE-MOUNTED VELOCITY ANALOG MONITORS o/

O.>

suun.3 - >

' RADIAL VfBRATION ALARMS ,

mMMMC ^Q A RCP HIGH

'AXlAL POSITION *V VIBRATION ,

KEYPHASE RCP VlBRATION "h SYSTEM TROUBLE

t COVTROL A004 INDICATIQVS

o Analog knitors Display Radial Vibration, Axial Pdsition and Velocity for Each ACP j o Analog knitors Provide High and High-High Alarm Contact htputs for Each ACP to Annunciate Abnormal A mlitudes
o Analog knitors Provide System Trouble Alarm Output Contacts o Analog knitors Provide the Data for Use In
the Detailed Digital Data & duction, Analysis and Presentation Preformed by the Dynamic Data l Manager System o All Control Adom Instrumentation Was Evaluated W1th &spect to and Installed in Accordance With NIMG 0700 &aan Engineering hidelines

l DYNAMIC DATA MANAGB9 I SYST91 l 0 The Systes @nsists of a Hewlett Packard

, Microcomuter and Pieripheral Devices o The' System Wovides the types of Data Typica))y thred in the Analysis and Early Detection of the following Types of Machinery Problems:

- Imbalance

- Misalignment

- Bearing Degradation

- Shaft O'ack kopagation

- Shaft-to-Ime))2r shint Stiffness Changes O

  • ___________hY_ _ _ .

i o The Systes Digitizes the Vibration Signals l and Provides the Fo))owing @-line Steady-State Dynaalc Vibration Data:  !

- Current Values

- JX # bit

- JX Time Base

- Spectral Representation

- Unfiltered Wbit s

- Trending of up to Three Selected Spectral Comonents, including JX Amplitude and Phase

- Trending of AqlJtude/ Phase Vectors 1

- Sequence-of-Events Reports for Alare Cond1t1ons That Occur for Any or a)) of the Pum s

- PerJodic Status Suneary Reports o In @nnon We in Var 1ous Industrial 4p]JcatJons t

. . . _ . _ _ _ , . . . . _ _ , , . . _ - . . . . . _ . _ _ , , ~ . - . _ . . . _ , . _ _ . - - . _ . _ . . _ __ , _ _ _ _ _ _ _ _ _ _ _

ACP h0VITQ9ING A906 RAM '

StAWARY o Wogram Being Iglemented This Otttage o Alara and Diagnostic Capabilities o Significantly F.nhances Capability to Monitor RCP Status a kovides Capability to Identify Incipient Failures l

l

, o i ,

I l

[

i i' l ll0TATIh8 ASSSM.Y bm0ZF.tCATIDME 1 M M

^

sheft neterial A-266 A-182 FM19 (nitrenies 60) i

\ Copscrew noterial A-286 Inconel X750 A-266

Lvive pin noterial A479 XM-19 i

! fiplit ring gr0Ove Y N i l skurnal attschnent Shrunk fit sleeve Side plates Neided to sheft with Nolded side

plates Miscellaneous Inndii applied at s11 grooves, threads, step changes; i

Upper fournal side plate weld is nachine flush with the l shaft, 6.1rne finish i

9 .g .

j ll0TATINB ASSEME.Y h00ZFICATIDME .

t U S i

i maft neterial Ama86 A-lae FM19 (nitronics 60) f I

Copscrew noterini Am896 Inconel X750 l' l>ive pin noterial AmB06 A479 - M-19 Y l @ lit ring groove Y N \

aJ6urnal attschnent Drunk fit sleeve Side plates nolded to sheft l

with nolded side  !

pistes

}

1 Miscellaneous Inndii applied at all grooves, threads, step changes; Upper fournal side plate weld l As nochine flush with the  !

sheft, 6.1Vas finish

\

e i 1

l ll0TATING ASSDet.Y Mn0IFICATIOME i

M.D HEW i

Sheft neteriel AmB66 A-182 FXM19 (nitronics 60)

I Ctpscrew noterini Am286 Inconel X750 l>ive pin noterisi AmB66 A479 - 20V-19 i i i l @ lit ring gr00ve Y N  ;

l  :

Journal attachment Shrunk fit sleeve Side pistes wided to shaft l with nolded side '

plates Miscellaneous }ltdii applied at all grooves.

l -

threads, step changes; upper journal side piste mid ,

is nochine flush with the l 6.1>nn finish shaft, i

l l

l _

3 4 t

l .

1  ;

l ll0TATZh6 ASSSm.Y ht30EFICATIDME .

l -

M.D hl%f i

1 maft neterial Ame86 A-18e FM19 (nitrenies 60)  ;

i l

l Cepscrew noterial AmB86 Inconel X750

! l>ive pin noterial Ame86 A479 - M-19 l ,

1

.iplit rin9 groove i Y N I I skurnal attachment Drunk fit sleeve side plates noided to shaft l

\ '

with nolded side plates

, Miscellaneous inndis applied at all grooves, threads, step changen; Upper journal side piste nold

) is nochine flush with the shaft. St>ne finish  :

4

\

3 4 f

[ ~

~

I MTATIM ASSENKY AG0ZFICATIDNF i

i M.D MW l

l m att noterial Ama86 A-lae FM19 (nitronics 60) l i Copscrew noterial Am286 Inconel X?50 Lvive pin noterial Am286 A479 - M-19 l i l @ lit ring groove Y N l

l  :

. Journal attachment Brunk fit sleeve Side pistes holded to shaft with nelded side plates Miscellaneous llndii applied at all grooves, threads, step changes; Upper journal side piste Neld ,

i is nochine flush with the l shaft, 6.!>ns finish l l l

4

- _ _ _ _ _ _ _ _ _ _

Retrieved from "https://kanterella.com/w/index.php?title=ML20207N288&oldid=3319385"