ML031740330

Bare Metal Visual Relaxation Request Slides - June 17, 2003, Nozzle Insulation Collars, Agenda

ML031740330
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/17/2003
From:	Entergy Operations
To:	Office of Nuclear Reactor Regulation
References
Download: ML031740330 (13)

Text

Nozzfle Insuabnon Coflars 81 CIEDM and 8 ICI collars, Collars are custom fit to vessel contour Tempmat -Fully OS.

l.

are Pittsburgh Encapsulated WI CollarsCollars are Pittsbeurgh SFiberglass Cloth Corningj TempMat (See Note 3) insulation covered with A 4 fiberglass cloth lagging ST. STL and el in p ace by Wire (2) stainless steel (Ss Places wire., 24 GA ST. STL- See Note F Each col'lar'contai-ns a, RI Continous Cylinder 24 GAS Continuous; 1 Cylinder rI O I...

6/17/2003 16

nter rences to BMV

. - 1 Whats Unfque AoutAN2 CEDM Motor Housings follows the RVH contour No Stepped: shroud design severely limits access for BMV; o, All.CoilfStackf,RSPT..s must be..removd to-uppvo a-BMV

'6/17/2003

Disassembly Sequence

_. Mov ,l & strv" RoS1: :"2RS:

CP COj

Assembly Seuence oo nstall 81 re-desigined Insulation ollars

I--- ----- --- - - -- -- I.. - ---

RRisk Summary Damage to RSPTs

• Damage to CEDM Coil Stacks o Damage to the C.EDM Motor Housings During Removal of Lift,Rig; (Blind Lift , i i o Ls=I rUh'~~

T ght Clearances) .$

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,' it v A1

• NQ qualified CEDM motor or pressure:

s~~~~~~~~~~~

hlousing repairiavailable 6117/2003

111. I l i

ardshp Summary i i

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>The CEDM Cooling/Insul ation System h, ,s flQt d.e. ignedl tQ alQw accesstR a

he a fl . Z e oo,AN,O-,r2- C ,,o,- ng f__M, ,,yjs-,te-ml Desi'9",ni 1S a I

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2 Rm)r i mpwactI

--I~~~:,bf dia t g , euifp , t 6/17/2003

Inspection Plans II 4, _ F Wilblamn Sim S I

t # o l f tJ ,',: T"" . ' , "

, s61l7l2003

+ . _ _ . _ , ....... .... .. z .. . .,. . _-

Last Outage -2R15 Voflumetrfc Inspecton Results

• 90 reactor vessel head penetrations examined by i iI Ultrasonic techniques i

> 81 CEDM, 8 ICI Nozzles i I

UT through wall of the nozzle, ]-weld fusion area including the triple point, and Riverbed.

i Vent

• UT 45 degree shear waves looking in axial and circ directions,

• Special interest examinations

• CEDM 43 & 59 Liquid Penetrant of portions of Jweld. No indications identified.

• CEDM,3-O Eddy Current of portion of nozzle OD. No indications identified.

r I- e i0 P 9' 6/17/22003

2R15 - supplemental Visual Inspton Abve Insulaton oPerformed visual exam

., _ 0 _w_ 1 -

0 _

above ~shroud, around I

-1 I 2R15 InspecPon Resuls

• NO. LEAK PATH THROUGH TRIPLE POINT

• N.O. LEAKAGE PATH, INDICATIONS FOUND ] IN ANNULUS

> NO PWSCC,: INDIC ATIONS FOUND IN'

1. ,

NOZZLE OR WELD -

I

• NO ,Q,RON FOUND; ON HEA, PERIPHER, I INS,ULATIO,, SHROUD QQR ANi V ri..fr.e i

6/17/2003

2R16 nspeton an ITTh_lt_ Al -_A CEDM/ICI nozzles No Boror I w -

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Demonstration riple o _ __ _ V _ ~~~~~L _\_ _ _ __s s___Z Io oInt Entergy De onst ration