ML17254A420
| ML17254A420 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/01/1985 |
| From: | Chris Miller Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8507030454 | |
| Download: ML17254A420 (7) | |
Text
r July 1, 1985 Docket No. 50-244 LICENSEE; Rochester Gas and Electric Corporation FACILITY:
R.
E. Ginna Nuclear Power Plant
SUBJECT:
SUMMARY
OF MAY 22 and MAY 23, 1985 MEETING ON MASONRY WALLS The staff, along with its consultants, Franklin Research Center (FRC) and Professor A. Hamid of Drexel University, conducted a two-day site visit/
meeting (May 22-23, 1985) with the licensee to review Ginna 's masonry wall design, construction and modifications.
The staff visited the plant site and performed a walk-down of the masonry walls in the control, auxiliary and intermediate buildings to observe construction, boundary conditions, attachments, modifications and the general vicinity of the safety-related equipment.
The licensee's consultants made a presentation on a non-linear analysis methodology which the licensee may decide to use for qualifying the control building walls.
The staff selected specific wall calculations for detailed review.
The staff reviewed calculations including computer input/output.
The staff also discussed questions which existed from earlier licensee responses.
In addition, some gA/gC documentation and test results were also discussed and reviewed.
As a result of the above activities, five action items were identified (See enclosure).
The licensee's responses to these action items are required to complete this action.
The licensee has not made a final decision regarding tornado wind loading; however, the licensee indicated that their approach is likely to be to protect safety-related equipment from the failure of a wall.
The licensee will advise the staff regarding its decision.
The staff finds that this two-day meeting/audit has been extremely helpful in understanding the plant-specific features of the masonry wall design at Ginna, and this activity will expedite the resolution of the issue.
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Enclosure:
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ENCLOSURE ACTION ITEMS 1.
The staff will advise the licensee regarding the acceptability of the Ginna proposal to perform non-linear analysis similar to that performed for San Onofre l.
2.
The staff will request the licensee to present the applicability of non-linear methodology to Ginna in light of the following:
b.
The Ginna walls contain heavily reinforced pilasters; One-way action is assumed in non-linear analysis;
- however, Ginna walls appear to be more consistent with plate/box behavior; and c.
Boundary conditions at Ginna walls may be fixed.
3.
Based on the review of computer input/output, the staff will request clarification on the following:
a.
Static vs.
Dynamic analysis b.
Assumed boundary conditions in the computer input for wall l-lc.
c.
Assumed wall thickness for wall 2-1c.
4.
The staff will request a
summary of the table in calculation 1.68.5 (p.
- 16) including the following specific information:
a.
Boundary conditions b.
Frequency bounds (cracked/uncracked) c.
Apnlied moment (uncracked/cracked) 5.
The staff will request that the licensee clarify the venting situation for the control building.
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 July 1,
1985 Docket Nn. 50-244 LICENSEF.:
Rochester Gas and Electric Corporation FACILITY:
R.
E.
Gi nna Nuclear Power P 1 a nt
SUBJECT:
SUHHARY OF HAY 22 and HAY 23, 1985 MEETING ON HASONRY IIALLS The staff, along with its consultants, Franklin Research Center (FRC) and Professor A. Hamid of Drexel University, conducted a two-day site visit/
meeting (Hay 22-23, 1985) with the licensee tn review Ginna's masonry wall design, construction and modifications.
The staff vis'.ted the plant site and performed a walk-down of the masonry walls in the control, auxiliary and intermediate buildings to observe construction, hnundary conditions, attachments, modifications and the general vicinity of the safety-related equipment.
The licensee's consultants made a presentation on a non-linear analysis methodology which the licensee may decide to use for qualifying the control building walls.
The staff selected specific wall calculations for detailed review.
The staff reviewed calculations including computer input/output.
The staff also discussed questions which existed from earlier licensee responses.
In addition, some gA/gC documentation and test results were also discussed and reviewed.
As a result of the above activities, five action items were identified (See enclosure).
The licensee's responses to these action items are required to complete this action.
The licensee has not made a final decisinn regarding tornado wind loading; however, the licensee indicated that their approach is likely to be to protect safety-related equipment from the failure of a wall.
ThI licensee will advise the staff regarding its decision.
The staff finds that this two-day meeting/audit has been extremely helpful in understanding the plant-specific features of the masonry wall design at Ginna, and this activity will expedite the resolution of the issue.
Enclosure:
As stated Charles L. Miller, Project Ha na ger Operating Reactors Branch ¹5 Division nf Licensing cc:
See next page
CC Harry H. Voigt, Esquire
- LeRneuf, Lamb, Leihy and YacRae 1333 New Hampshire
- Avenue, N.W.
Suite 1100 Washinaton, D.C.
20036 Ezra Bialik Assistant Attorney General Environmental Protection Bureau New Ynrk State Department of Law 2 World Trade Center New York, New Ynrk 10047 Resident Inspector R.F..
Ginna Plant c/o U.S.
NRC 1503 Lake Road
- Ontario, New York 14519 Stanley B. Klimberg, Fsouire General Counsel New York State Energv Office Agency Building 2 Fmpire State Plaza
- Albany, New York 12223 Regional Administrator Nuclear Regulatory Cnmm'.ssion Region I Office 631 Park Avenue King of Prussia, Pennsylvania 19406 Supervisor of the Town of Ontario 1850 Ridge Road
- Ontario, New York 1~519 Jay Dunkleherger Division of Policy Analysis F Planning New York State Energy Office Aaency Building 2 Fmpire State Plaza
- Albany, New York 17223
'Roger W. Kober Vice President Electric and Steam Production Rochester Gas and Electric Corporation 89 East Avenue Rochester, New York 14649
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