ML031740330
| ML031740330 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  (NPF-006) |
| 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.
Collars are Pittsburgh Encapsulated WI
- l. Collars are Pittsbeurgh SFiberglass Cloth Corningj TempMat (See Note 3) insulation covered with A 4
fiberglass cloth lagging and el in p ace by stainless steel (Ss wire.,
24 GA ST. STL-F Each col'lar'contai-ns a, RI Continous Cylinder 24 GAS Continuous; 1
Cylinder ST. STL Wire (2)
Places See Note 6/17/2003 16 rI O I...
nter rences to BMV
Whats Unfque AoutAN2 CEDM Motor Housings follows the RVH contour No Stepped: shroud design severely limits access for BMV; o, All. Coil fStackf,RSPT..s must be..removd to-uppvo a-BMV
'6/17/2003
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Disassembly Sequence RoS 1 2 P
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Assembly Seuence oo nstall 81 re-desigined Insulation ollars
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 T ght Clearances)
- NQ qualified CEDM motor or pressure:
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hlousing repairiavailable 6117/2003 i
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ardshp Summary
>The CEDM Cooling/Insul ation System
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Last Outage
-2R15 Voflumetrfc Inspecton Results
- 90 reactor vessel head penetrations examined by Ultrasonic techniques
> 81 CEDM, 8 ICI Nozzles UT through wall of the nozzle, ]-weld fusion area including the triple point, and Riverbed.
i Vent
- UT 45 degree shear waves looking
- Special interest examinations
- CEDM 43 & 59 Liquid Penetrant of indications identified.
in axial and circ directions, portions of Jweld. No
- CEDM,3-O Eddy identified.
Current of portion of nozzle OD. No indications 6/17/2 i
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2R15 - supplemental Visual Inspton Abve Insulaton 0
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o Performed visual exam above ~shroud, around I
2R15 InspecPon Resuls
- NO. LEAK PATH THROUGH TRIPLE POINT
- N.O. LEAKAGE PATH, INDICATIONS FOUND ]
> NO PWSCC,: INDIC ATIONS FOUND IN' NOZZLE OR WELD
- NO,Q,RON FOUND; ON HEA, PERIPHER, INS,ULATIO,,
QQR SHROUD ANi V ri..fr.e 6/17/2003 IN
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2R16 nspeton an CEDM/ICI nozzles No Boror I
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__s s___Z Demonstration Io riple oInt Entergy De onst rat ion