ML20114A796
| ML20114A796 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 08/17/1992 |
| From: | Feigenbaum T NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NYN-92115, NUDOCS 9208210170 | |
| Download: ML20114A796 (4) | |
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Odii SiSt%x3?H03874 Telephone (603)474 9521 j[M
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Facsimile (603)474 2987 Energy Service Corporation Ted C. Feigenbaum Senior Vice President and Chief Nuclear Officer NYN 92115 August 17, 1992 United States Nuclear Regulatory Corumission Washington, D.C.
20555 Attention:
Document Control Desk
References:
(a)
Facility Operating License No. NPP 86, Docket No. 50-443 (b)
NRC Letter dated July 24,1992, 'Scabrook Station - Steam Generator Tube Rupture Analysis," G. E. Edison to T. C. Feigenbaum (c)
NilY Letter NYN 91061, dated April 16,1991, " Analysis of a Postulated Design Basis Steam Generator Tube Rupture for Seabrook Station" T.C.
Feigenbaum to USNRC (d)
NilY Letter NYN 92021, dated February 21,1992, " Steam Generator Tube Rupture Operator Response Times,* T. C. Felgenbaum to USNRC (e)
Teleconference Between K. T. Eccleston, USNRC, and-J. M. Peschel, North Atlantic, on August 10, 1992, ' Clarification of tiequest for Additional information"
Subject:
Response to Request for Additional Information Regarding Steam Generator Tube Rupture Analysis Gentlemen:
In a letter dated July 24,1992 [ Reference (b)], the NRC requested additional information regarding the report entitled " Analysis of a Postulated Design Basis Steam Generator Tube Rupture for Seabrook Station,' which was previously transmitted via Reference (c), and supplemented via Reference (d). Specifically, the NRC requested the released activity of iodine and noble gas isotopes from both the primary and condary coolant individually as a function of time after the event, as well as integrateu airborne releases of each for all airborne release pathways. This request was clarified during a teleconference [ Reference (e)], to be limited to the total released activity of iodine and
- noble gas isotopes as a function of time after the event.
l Accordingly, the attached tables contain the requested information.
Specifically, l
Table 1 contains the isouic cross activity releases, as a function of time, independent of pathway and originating location, for the pre-iodine spike case. Table 2 contain. the same
-information for the coincident iodine spike case. These releases were compiled from the calculation used for the 'Seabrook Station - Steam Generator Tube Rupture Analysis."
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j United States Nuclear Regulatory Commission August 17, 1992 Attention:
Document Control DesL Page two 4
Should you have any further questions regarding this matter please contact Mr. James M. Peschel, Regulatory Compliance Manager, at (603) 474 9521 extension 3772.
Very truly yours, N
ed C. Fcige aum TCF:J ES/jes ec:
Mr. Thomas T. Martin Regional Administrator
. U.S. Nuclear Regulatory Commission Region - 1 475 Allendale Road King of Prussia, PA 19406 Mr. Gordon E. Edison, Sr. Project ' Manager Project Directorate 13 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. Noel Dudley
. NRC Senior Resident inspector P.O. Box 1149 Seabrook, Nii 03874 ff'
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Table No.1 Steam Generator Tube Rupture Activity Release (Ci) Vs. Time Pre lodine Spike Case NUCLIDE O - I hr 1 - 2 hrs 2 - 8 hrs 1131 7.21E + 01 2.63 E + 01 4.02E + 00 1 132 2.75E + O2 8.75E + 01 6.49E + 00 1133 2.20E + O2 7.92E 4 01 1.12E + 01 1 134 3.24E + O2 8.14 E + 01 1.97 E + 00 1-135 3.90E + O2 1.36E + O2 1.60E + 01 V
l Total 1.28E + 03 4.10E + 02 3.97E + 01 Kr-85m 3.06E + 02 1.50E + 02 5.59E + 00 Kr 85 8.84 E + 02 4.99E + 02 2.28E + 01 Kr 87 2.40E + O2 8.25E + 01 1.99E + 00 Kr 88 5.14E + O2 2.32E + 02 7.82E + 00 Kr Total 1.94 E + 03 9.64E + 02 3.82E + 01 Xe 131m 1.50E + 03 8.44E + 02 3.90E + 01 Xc-133m 1.45 E + O2 8.43E + 01 2.17E + 01 Xc 133 5.37E + 03 3.06E + 03 3.90E + 02 Xc 135m 3.39E + 03 6.04E + 03 2.60E 4 04 Xe 135 2.39E + 03 2.25E + 03 4.15 E + 03 Xc 137 7.38E + 00 1.08 E - 04 0.00E + 00 Xe 138 8.41 E + 01 3.09E + 00 1.02E - 02 Xe Total 1.29E + 04 1.23E + 04 3.06E + C 1
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Table No. 2 Steam Generator Tube kupture Activity Release (Cl) Vs. Titne Coincident lodine Spike Case
' NUCLlDE O - I hr 1
2 hrs 2
8 hr$
t l-131' 3.65E + 01 2.21E + 01 3.61 E + 00 I 13?
6.67E + 02 3.85E + O2 2.97E + 01 l133 1.50E + O2 9.05E + 01 1,32 E + 01 I 134
- 2,07E + 03 1.10E + 03 3.04E + 01 1135 4.36E + O2 2.60E + O2 3.15E + 01 I Total 3.36E + 03 1.86E + 03 1.08E + 02 i
-Kr 85m
' 3.06E + 02 1.50E + 02 5.59E + 00 Kr 85
'8.84E + 02 4.99E + 02 2.28E + 01 Kr 87 2.40E + O2 8.25E + 01 2.01E + 00
- V,r 88 5.14E + O2 2.328 + 02 7.81 E + 00
. Kr Total.
1.94 E + 03 9.64E + 02 3.82E 4 01 Xe 131tu 1.50E + 03 8.44E + 02 3.89E + 01 Xe 133m
- 1.44E + 02 8.36E + 01 2.23E + 01 Xc 133.
5.36E + 03 3.0$E + 03 4.00E + 02 Xe 135tn 2.65E + 03 8.81E + 03 4.52E + 04
~ Xe 135 2.21E + 03 2,33E + 03 7.15E + 03 Xc 137 7.38 E + 00 1.08 E - 04 0.00E + 00 Xc 138 8.41E + 01 3.09E + 00 1.03E - 02 Xe 'lotal 1.20E + 04 1.51E + 04
-5.28E + 04
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