ML090890190
| ML090890190 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/20/2009 |
| From: | Joseph Pacher Constellation Energy Nuclear Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML090890190 (9) | |
Text
Joe Pacher Manager, Nuclear Engineering Services R.E. Ginna Nuclear Power Plant, LLC 1503 Lake Road Ontario, New York 14519-9364 585.771.5208 585.771.3392 Fax joseph.pacher@constellation.com Constellation EnergyN Nuclear Generation Group March 20, 2009 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
SUBJECT:
Document Control Desk R.E. Ginna Nuclear Power Plant Docket No. 50-244 Response to Request for Additional Information Associated With Relief Request Number 22
References:
(1)
Letter from J. Pacher, Ginna LLC, to NRC Document Control Desk,
Subject:
First Interval IWE/IWL Containment Program Submittal of Relief Request Number 22, dated November 21, 2008.
(2)
Letter from D. Pickett, NRC, to J. Carlin, Ginna LLC,
Subject:
Request for Additional Information Re: First Interval IWE/IWL Containment Program Relief Request Number 22 - R.E. Ginna Nuclear Power Plant (TAC No. ME0154), dated February 9, 2009.
In Reference 1, R.E. Ginna Nuclear Power Plant, LLC (Ginna LLC) submitted a relief request associated with the IWE/IWL Containment Program. On February 9, 2009 the NRC responded to that submittal with a request for additional information (Reference 2). Enclosed please find the responses to the staff's questions.
No new commitments are being made in this letter.
If you should have any questions regarding this submittal, please contact David Wilson at (585) 771-5219.
Very truly yours, A9?
oseph E. Pacher Response to Request for Additional I irmation Associated With Relief Request Number 22
Attachment:
I
Document Control Desk March 20, 2009 Page 2 cc:
S. J. Collins, NRC D. V. Pickett, NRC Resident Inspector, NRC
ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 R.E. Ginna Nuclear Power Plant, LLC March 20, 2009
ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 Question 1 Considering the approximately 16-month extension of the first Containment Inservice Inspection (CISI) interval requested in the Reference relief request, provide the following information:
(a) The proposed start and end dates and code of record for the next (second) 120-month CISI interval, covering IWE and IWL inspections, that would align with the next ISI interval.
Response
The start date of the Second 120-Month Containment ISI Interval is January 1, 2010 and the end date for the Second CISI Interval for IWE and IWL is December 31, 2019. The code of record for the Second CISI Interval for IWE and IWL will be the 2004 Edition of ASME Section XI (b) The approximate date(s) of the last refueling outage/cycle, as pertinent, in which all the required IWE and IWL inspections for the current (first) CISI interval were completed, as stated in the relief request.
Response
All remaining examinations for the First CISI Interval for IWE and IWL were completed at the conclusion of the 2008 refueling outage (March 2008).
(c) The approximate date(s) of the first refueling outage/cycle, as pertinent, in which IWE and IWL inspections for the next (second) CISI interval are proposed to begin.
Response
The first refueling outage in the Second CISI Interval for IWE and IWL is scheduled for the spring of 2011.
(d) Indicate if there will be any refueling outages between the two outages referred to in items (b) and (c) above and the plan for IWE/IWL inspections, if any, for that outage. Indicate the interval to which these inspections, if any, will be credited.
Response
There is one refueling outage scheduled for the fall of 2009. This outage will be credited to the current Containment Interval (First CISI Interval for IWE and IWL).
There are currently no examinations for IWE or IWL scheduled for the fall of 2009 outage.
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ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 Question 2 Provide the highlights of the findings of the recent IWE and IWL examinations (required by the CISI program) during the first CISI interval and their disposition. Indicate if there are any areas requiring/undergoing augmented examination and how they are being implemented, if applicable.
Response
All examinations required by ASME Section Xl Code 1992 Edition, 1992 Addenda, and as modified by approved Relief Requests and 10 CFR 50.55a were completed at the conclusion of the 2008 refueling outage in March of 2008. The highlights of the findings from the examinations are below:
ASME Section XI Code Examination Category E-A, Item Number E1.11 Component Name Sump "A" Liner, ISI Summary Number - 1900002 History 2003 -
Light to medium rust noted on wall. Heavy rust noted on the North wall corner -
Reject. Weld Repair to North wall corner, Post Repair/Repaint exams performed (VT &
UT) -Acceptable 2005 - Failed coating-cleaned, then UT -Acceptable under exam record N05442 2006 - Failed coating-cleaned, then VT & UT - Acceptable (see augmented exams) 2008 - Performed VT-3 under ISI Summary Number I 900602 - Acceptable Component Name Penetration 29 Transfer Tube Liner, ISl Summary Number - I 900006 History 1999 - Transfer Tube Liner has possible leak northeast corner - Reject. Performed controlled leakage exam - no leaks found. Rust blistering on liner 4" to 6" off the floor and along Penetration 29 outer weld within 1" to 2" of approximately 50% of the perimeter of the weld. Bolting removed and examined - Acceptable.
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ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 2000 - No recordable indications-completion of 1999 exam 2003 - General Visual - Acceptable
& 2008-VT-1 performed under ISI Summary Number - 1 901001 - Acceptable ASME Section XI Code Examination Category E-A, Item Number E1.12:
Component Name Penetration 201, ISI Summary Number - I 900686 History 2008 -
VT-3 outside containment, rust on face of penetration and weld to process pipe - Reject.
Cleaned, VT-1 and UT - Acceptable, VT-3 after applied coating - Acceptable Component Name Penetration 316, ISI Summary Number - I 900732 History 2008 -
VT-3 outside containment, rust on face of penetration and weld to process pipe - Reject.
Cleaned, VT-1 and UT - Acceptable, VT-3 after applied coating - Acceptable Component Name Penetration 319, ISI Summary Number - I 900738 History 2008 -
VT-3 outside containment, rust on face of penetration and weld to process pipe - Reject.
Cleaned, VT-1 and UT - Acceptable, VT-3 after applied coating - Acceptable 3
ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 Component Name Penetration 320, ISI Summary Number - I 900740 History 2008 - VT-3 outside containment, rust on face of penetration and weld to process pipe - Reject.
Cleaned, VT-i and UT - Acceptable, VT-3 after applied coating - Acceptable ASME Section Xl Code Examination Category L-B, Item Number L2.30:
Component Name Tendon # 73, ISI Summary Number I 954073 History 2006 -
VT-i Button Heads - 5 w/splits < 0.060". Sacrificial wire in spacer tube.
Hardware/Shims - Acceptable. Dent in Anchor Head top surface - Acceptable.
Bearing surface - pitting at gasket surface < 1/64" - Acceptable. Tension Test <
Minimal. Condition Report 2005-5212 generated. Y4" shim added. VT-1C:
2 cracks at 6:00 and 8:00 position < 0.010" - Acceptable. Tendon # 74 added to scope and found Acceptable.
ASME Section Xl Code Examination Category E-C, Item Number E4.11: (Augmented Examinations)
Component Name Sump A Liner, ISI Summary Number I 901002 History 2003 -
Reject - Code Weld Repair performed on North Wall corner. VT Acceptable.
2006 -
VT Acceptable 4
ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 Component Name Penetration 29 Area (Penetration 29, 35 Feet West of Penetration 29 and 30 Feet East of Penetration 29), ISI Summary Number I 901001 History 2005 - VT-1; Penetration 29 Area, 30 Feet East of Penetration 29 and 35 Feet West of Penetration 29 -All Acceptable.
2008 - VT-1; Penetration 29 Area, 30 Feet East of Penetration 29 and 35 Feet West of Penetration 29 - All Acceptable.
ASME Section XI Code Examination Category E-C, Item Number E4.12: (Augmented Examinations)
Component Name Sump A Liner, ISI Summary Number I 901502 History 2003 - Reject - Code Weld Repair performed on North Wall corner. UT after Repair -
Acceptable.
2006 - UT: Readings range from 0.245" to 0.330". All Acceptable.
Component Name Penetration 29 Area (Penetration 29, 35 Feet West of Penetration 29 and 30 Feet East of Penetration 29), ISI Summary Number I 901501 History 2005-UT; Penetration 29 Area-Lowest Reading 0.334" - Acceptable. 30 Feet East of Penetration 29 area-Lowest Reading 0.356" - Acceptable. 35 Feet West of Penetration 29 area - Lowest Reading 0.370" - Acceptable.
2008 -
UT; Penetration 29 area, 30 Feet East of Penetration 29 area and 35 Feet West of Penetration 29 area - All Acceptable and above 0.300" 5
ATTACHMENT Response to Request for Additional Information Associated With Relief Request Number 22 Question 3 Note 1 in Section 1 "ASME Code Component(s) Affected" of the Relief Request states that:
"Applicability to Subsection IWL is limited to the referencing of the Code of Record in program documents and to the update of program procedures to the new Code requirements.
Subsection IWL inspection frequencies will remain unchanged." Explain and clarify the meaning and implication of the note in the context of the relief request applicable to the first CISI interval, which under the original interval plan ended on September 8, 2008, and already had a code of record with program procedures and inspection frequencies in accordance with that code of record.
Response
The intent of the statement was to clarify that the inspection frequencies in place would not be changed by changing the interval date for the Second Containment ISI Interval to coincide with the start and end date of the Fifth ISI Interval. For example the requirement to perform tendon examinations at five year frequencies would be based on the date last performed (plus or minus one-year) and not based on the new interval's start date. There is no impact to the First Containment ISI Interval Code of Record. This statement applies to the Second Containment ISI Interval Code of Record only.
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