ML021140087
| ML021140087 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  (NPF-006) |
| Issue date: | 04/19/2002 |
| From: | Alexion T NRC/NRR/DLPM/LPD4 |
| To: | Entergy Operations |
| References | |
| BL-02-001 | |
| Download: ML021140087 (3) | |
Text
IThomas Alexion - QUESTIONS ON 15-DAY RESPONSE TO BULLETIN 2002-01 From:
To:
Date:
Subject:
Thomas Alexion SBENNE2@entergy.com 4/19/02 2:41PM QUESTIONS ON 15-DAY RESPONSE TO BULLETIN 2002-01
- Steve, See the attached.
Tom CC:
Eddy Crowe; Jeffrey Clark; Kathy Weaver; Linda Smith; Russ Bywater 4 Page 1
QUESTIONS ON ENTERGY'S 15-DAY RESPONSE TO BULLETIN 2002-01, "REACTOR PRESSURE VESSEL HEAD DEGRADATION AND REACTOR COOLANT PRESSURE BOUNDARY INTEGRITY" ARKANSAS NUCLEAR ONE, UNITS 1 AND 2 (ANO-1 AND ANO-2)
- 1.
It was indicated that 1 nozzle at ANO-1 has been repaired due to leakage. Please discuss whether there were opportunities to discover a cavity outside the nozzle during the repair process (through pre-or post-repair inspections, through preparation of the area for repair, etc.).
- 2.
Has the boric acid on the insulation at ANO-2 been cleaned? If not, are there any plans to clean it?
- 3.
Are any actions taken to prevent/minimize the amount of boric acid that is sprayed onto the head during the venting operation? Please describe these actions.
- 4.
With regard to future inspection plans, please define the type of evaluation that is stated in the following response to question 1.D for both ANO units: "If throughwall or throughweld cracks are found and a concentration of boron is found protruding through the annulus region of the penetration, an evaluation will be performed to determine if there is potential for wastage of the adjacent vessel material."
- 5.
Since the insulation on ANO-2 cannot be easily removed, please address whether or not ultrasonic testing (UT) of the nozzles in ANO-2 alone (i.e. eddy current (EC) testing on only some of the nozzles) will identify reactor pressure vessel head wastage.
I C:\\WlNDOWS\\TEMP\\GW}OOOO1.TMP Mail Envelope Properties (3CC064F0.509 : 0: 20628)
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QUESTIONS ON 15-DAY RESPONSE TO BULLETIN 2002-01 4/19/02 2:41PM Thomas Alexion TWA@nrc.wov Recipients entergy.com SBENNE2 (SBENNE2 @entergy.com)
Action Transferred Date & Time 04/19/02 02:42PM nrc.gov ARLPO.ARLDO ELC 1 CC (Eddy Crowe)
JAC CC (Jeffrey Clark)
KDW CC (Kathy Weaver)
LJS CC (Linda Smith)
RLB3 CC (Russ Bywater)
Delivered 04/19/02 02:42PM Post Office Delivered ARLPO.ARLDO Files BULL2002-01RAI# 1.wpd MESSAGE Options Auto Delete:
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