ML19351F332
| ML19351F332 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 12/19/1980 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Mcgaughy J MISSISSIPPI POWER & LIGHT CO. |
| References | |
| NUDOCS 8101120257 | |
| Download: ML19351F332 (4) | |
Text
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I UEC. I S 1989 Docket flos.: 50-416/417 liississippi Power and Light Company ATTil: Mr. James P. IfcGaughy, Jr.
Assistant Vice President - fluclear Production P.O. Box 1640 Jackson, Missi.csippi 39205
Dear Mr. McGaughy:
SUBJECT:
ULTIMATE CAPACITY AllALYSES OF t1 ARK III C0flTAlf1MEllTC - GRAfl0 GULF fiUCLEAR STATI0?t As part of the staff's generic review of the effects of hydrogen evolving from a postulated accident, all applicants who have either an ice condenser or Itark III pressure-suppression containment design are being requested to perform an ultimate capacity analysis for the containment.
Since tha Grand Gulf Station utilites the Mark III containment design, we request that you perform such an analysis, as described in the enclosure.
We further request that, within 30 days of your receipt of this letter, you identify the schedule by which the results of this analysis will be submitted to the staff.
Please contact us if you desire any clarification of this request.
Sincerely, l
Robert L. Tedesco, Assistant Director i
for Licensing Division of Licensing
Enclosure:
Ultimate Capacity Analyses of l
Ice Condenser and Mark III Containments 1
cc: See next page.
DISTRIBUTI0ft: SEE fiEXT PAGE.
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Wise, Carter, Child, Steen & Caraway P. O. Box 6bl Jackson, Mississippi 39205 Troy C. Conner, Jr., Esq.
Conner, Moore & Corber 1747 Pennsylvania Avenue, N. W.
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Washington, D. C.
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Mr. Adrian Zaccaria, Project Engineer Grand Gulf Nuclear Station Bechtel Power Corporation Gaithersburg, Maryland 20760 Mr. Alan G. Wagner, Resident inspector t
P. O. Box 469 Port Gibson, hississippi 39150 Nr. N. L. Stampley, Sr. Vice President Engineering, Production & Construction P.O. Box 1640 Jackson, Mississippi 39205 i
hr. L. F. Dale Nuclear Project Manager P.O. Box 1640 Jackson, Mississippi 39205 Mr. John Richardson P. O. Box 1640 Jackson, Mississippi 39205 a
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ULTittATE CAPACITY ANALYSES 0F ICE CONDENSER AND MARK III CONTAINMENTS Detailed analyses are to be performed to assess the effect on Containmen integrity of a potential hdyrogen burn.
Ultimate capacity of the cont.ain-ment should be evaluated using a finite element model.
Uniform static pressure capability should be calculated.
Dynamic local and overall pressure cabability should also be assessed.
Based on the actual materia' strength variations indicated by mill test certificates and other uncertainties, the mean, an estimate of dispersion, and lower and upper bounds of the containment capacity should be established.
The details of the analyses and the results should be submitted in report form.
The following information should be readily identifiable in the report:
1.
Design pressure; s
2.
Calculated static pressure retaining capacity; 3.
Calculated dynamic pressure strength considering appropriate pressure time histories; 4.
The associated failure modes (axisymetric burst pressure, buckling, rebar yielding, penetration failure, closure failure, or others);
5.
The criteria governing the original design and the criteria used to establish failure; 6,. Analysis details and general results; and i
7.
Appropriate engineering drawings adequate to allow verification of modeling and evaluation of a.91yses employed for penetrations.
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DEC 1 9 1980 d
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