ML19324B790

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BWR Feedwater Nozzle Inservice Insp Rept for Grand Gulf Nuclear Station Unit 1.
ML19324B790
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 10/24/1989
From:
SYSTEM ENERGY RESOURCES, INC.
To:
Shared Package
ML19324B788 List:
References
SERI-0619-00002, SERI-619-2, NUDOCS 8911080242
Download: ML19324B790 (8)


Text

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REPORT NUMBER SERI 0619 00002 l REF: NUREG 0619 l l

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l SWR FEE 0 WATER N0ZZLE l

! INSERVICE INSPECTION REPORT l FOR j l GRAND SULF NUCLEAR STAfl0N UNIT I l COMMERCIAL OPERATING DATE: JULY 1,1988 i I

i; OWNER l

SYSTEM ENERGY RESOURCES,INC.

R Q DOX TSS PORT SISSON, MS 38150  ;

l C911000242 891024 9

  • e System Energy l

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PDR ADOCK 05000416 G PNV ,

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REPORT NUMBER-83RI-0419-00003 i

In accordance with NUREG-0619 a detailed report must be submitted discussing the inspections performed on the Tecdwater Nossle Blend Radii and Bore Regnons (Inner Radius) and Nostle to Safe End Welds.

Specification SERI-M-489.1 (Inservice Inspection Ten Year Program) is in compliance with the requirements of Table 2 of NUREG-0619 which requires augmented volumetric examinations of these areas.

This report summarises the inspections performed since the previous report through RF03.

The volumetric examinations were performed by General Electric )

under contract to System Energy Resources Inc. (SERI) . In addition, surface examinations were performed on two nossle-to-safe-end welds j (N4C and N4D) by U.S. Testing Company under contract to SERI. The data reports for all examinations are available for review upon i request.  !

In an offort to provide the Nuclear Regulatory Commission with the j requested information, this report is being presented in the t following format. Each item listed in Paragraph 4.4.3.1(2) of r NUREG-0619 is addressed separately. {

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a. Startup/ Shutdown cycles l
1) Total number of cycles at Grand Gulf 64, total includes f 26 scrams, 38 heatups and their respective cooldowns.  ;
2) Total number of cycles since the previous volumetric  !

examinations on the blend radiit 8, total includes 5  ;

scrams, 3 heatups and their respective cooldowns. l

3) Total number of cycles since the previous surface i f

examinations on the blend radiit 64, total includes 36

. scrams, 38 heatups and their respective cooldowns, f

4) Total number of cycles since the previous volumetric J examinations on the nossle-to-safe-end weldst

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8, total includes 5 scrams, 3 heatups knd their respective  :

cooldowns. j

5) Total number of cycles since the previous surface [

examinations on the nossle-to-sofe-end weldst

- N4A and N4B; 8, total includes 5 scrams, 3 heatups l and their respective cooldowns.

- N4C,N4D,N4E and N4F; 61, total includes 26 scrams, 35 heatups and their respective cooldowns.

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b. Summary of Methods Used and Results of Previous Inspections During RF03 volumetric examinations were performed on the l j nossle blend radii and bore regions (inner radius) and the i i nossle-to-safe-end welds. Surf ace examinations were performed  !

I on the outside surface on two nossle-to-safe-end welds (N4C ]

and N4D).  !

Refer to tables 1 and 2 (attached) for examination methods and  !

l dates examinations were performed for each nozzle. l t

Refer to previous report (SERI-0619-00001) for the methods i used and results of inspections performed prior to RF03. l

c. system changes and changes in operating Procedures l 1

The volumetric examinations performed during RF03 were the  !'

second examinations performed since the preservice L examinations. There have not been any system changes or  !

changes to operating procedures that would effect system i I

temperature or flow during this time period.

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d. Inspection Resulta j RF03, remote volumetric examinations were performed on I

! Durinfxfeedwaternossleblendradiiandboreregicns(inner all a I radius) and all six feedwater nossle-to-safe end welds. i i

No indications were recorded for examinatione on the blend  !

radii and bore regions (inner radius) which required j evaluation in accordance with ASME Section XI. ,

I Won-relevant indications were recorded on the nossle-to-safe-end welds. These indications were evaluated and determined to l be caused by: I.D. surface geometry, geometry from thermal i sleeve positioning ridge and root geometry. ,

P Final analysis' of the ultrasonic examination data was  !

parformed and found to be acceptable in accordance with the  !

General Electric procedure for reviewing and analysing .

recordable indications (NDE-1) and SERI standard SERI-M489.2. l j During RF03 surface examinations were performed on the outside  ;

surface of two nozzle-to-safe-end welds (N4C and N4D) . The surface examinations resulted in no recordable indications.

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e. Isakage Monitoring [

Grand Gulf has not installed any type of on-line leakage l monitoring system capable of detecting leakage through  ;

degraded seals on the feedwater sparger. j i

f. Information Regarding UT Crack-like Indications and any j subsequent PT Indications. ,

No UT crack-like indications were detected, thus no penetrant  !

testing was required.

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UT GG21A3802AB NO RECORDMBI2 INDICATIONS 09/19/78*

N4A PT GG21A3809AA (RADIUS & BORE) 2 AREAS OF RECORDnB M INDICATIONS 04/07/80

9 30* UT UT-23-380 ATT. "A" ZONE 1 NO RECORDhBM INDICATIONS 12/19/80 i UT UT-23-380 ATT. "B" ZONE 2 NO RECORDABIE INDICATIONS 12/19/80 4 UT UT-23-3b0 ATT. "C" ZONE 3 NO RECORDABIE INDICATIONS 12/19/80 ,

! UT UT-28 NO RECORDMBIE INDICATIONS 10/20/86 '

l UT UT-23 NO RECORDhBLE INDICATIONS 04/14/89

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j UT GG21A3802AB NO RECORDhBIE INDICATIONS 09/19/78 j M4B PT GG21A3809AA (RADIUS & BORE) NO RECORDhBIE INDICATIONS 04/07/80 9 90* UT UT-23-380 ATT. "A" ZONE 1 NO RECORDABIE INDICATIONS 12/19/80 l UT UT-23-380 ATT. "B" ZONE 2 NO RECORDhB12 INDICATIONS 12/19/80 l UT UT-23-380 ATT. "C" ZONE 3 NO RECORDhBIE INDICATIONS 12/19/80

) UT UT-28 NO RECORDhBM INDICATIONS 10/20/96

! UT UT-23 NO RECORDhBIE INDICATIONS 04/14/89 i

i UT GG21A3802AB NO RECORDhBI2 INDICATIONS 09/19/78 l N4C PT GG21A3809AA (RADIUS & BORE) NO RECORDhBt2 INDICATIONS 04/07/80

9 150* UT UT-23-360 ATT. "A" ZONE 1 NO RECORDhBIK INDICATIONS 12/19/80 l UT UT-23-380 ATT. "B" ZONE 2 NO RECORDhBIA INDICATIONS 12/19/80 i UT UT-23-380 ATT. "C" ZONE 3 NO RECORDABM INDICATIONS 12/19/80 l UT UT-28 NO RECO A mu INDICATIONS 10/20/86 j UT UT-23 NO RECORDhBM INDICATIONS 04/14/89 I

UT GG21A3802AB NO RECORDhBIA INDICATIONS 09/19/78 N4D PT GG21A3809AA (RADIUS & BORE) NO RECORDhBIE INDICATIONS 04/07/80 l NO RECORDEBIK INDICATIONS 12/19/80 j @ 210* UT UT-23-380 ATT. "A" ZONE 1 i UT UT-23-380 ATT. "B" ZONE 2 NO RECORDhBIE INDICATIONS 12/19/80 ,

I UT UT-23-380 ATT. "C" ZONE 3 NO RECORDhBIE INDICATIONS 12/19/80 UT UT-28 NO RECORDABM INDICATIONS 10/20/86 UT UT-23 NO RECORDABM INDICATIONS 04/14/89 UT GG21A3802AB NO RECORDhBIE INDICATIONS 09/19/78

) N4E PT GG21A3809AA (RADIUS & BORE) NO RECORDhBM INDICATIONS 04/07/80 l

@ 270* UT UT-23-380 ATT. "A" ZONE 1 NO RECORDhBM INDICATIONS 12/19/SC j UT UT-23-380 ATT. "B" ZONE 2 NO RECORDhBIE INDICATIONS 12/19/80

UT UT-23-380 ATT. "C" ZONE 3 NO RECORDhBM INDICATIONS 12/19/80 UT UT-28 NO RECORtmBM INDICATIONS 10/20/86 l; UT UT-23 NO RECORDhBM INDICATIONS 04/14/89 l

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