ML20056C380
| ML20056C380 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 05/10/1993 |
| From: | Sobel P Office of Nuclear Reactor Regulation |
| To: | Ohara T YANKEE ATOMIC ELECTRIC CO. |
| References | |
| NUDOCS 9305200372 | |
| Download: ML20056C380 (6) | |
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Mr. Tom O'Hara i
Yankee Atomic Electric Company 508 Main Street Bolton, MA 01740 j
Dear Tom:
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Attached are the peak ground acceleration 'and spectral values you'requestsd i
for the Maine Yankee site. These probabilistic hazard estimates'are j
preliminary values developed by Lawrence Livermore National Laboratory '(LLNL) l in December 1992. The ground motion inputs are still under development and final hazard estimates should be available this summer.
Since these estimates i
I are preliminary and subject to change in the near future, it would be ill i-advised to use them in making judgements about a site or_ decisions to expend-l J
resources.
1 We are planning to develop a NUREG report later this year which will summarize-r
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the 1992/1993 LLNL probabilistic hazard work performed for the Office of t
i Nuclear Reactor Regulation.
Some of the probabilistic hazard results for'each i
nuclear power plant site in the eastern U.S. will be included in the report as i
{
tables of data. We would appreciate any suggestions you may have regarding j
which tables would be of most use-to utilities.
j.
If you have any questions about the attached data please call me at 301-504-
}-
2738.
I-t l.
i-l Sincerely,
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l 140004 tr6sant samed ay:
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Phyllis Sobel, Geophysicist Civil Engineering and Geosciences Branch l
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Attachment:
Hazard estimates DISTRIBUTION:
PSobel RRothman GBagchi ETrottier 1 -
ECGB R/F iCentral' file?
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9305200372'930510 PDR ADOCK 05000309-:
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PDR i
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i MAINE YANKEE - 1992 PRELIMINAkY LLNL HAZARD ESTIMATES FOR PEAK ACCELERATION l
l acceleration best estimate arithmetic geometric (cals) mean
- meat, 0.5000E+02 0.9317E-03 0.1328E-02 0.6177ET03 r
0.7500E+02 0.4840E-03 0.7214E-03 0.3156E !
0.1500E+03 0.1390E-03 0.2230E-03 0.8722E-04
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0.2500E+03 0.4629E-04 0.8094E-04 0.2782E-04 0.3000E+03 0.2951E-04 0.5414E-04 0.1740E-04 f
0.4000E+03 0.1342E-04 0.2733E-04 0.7636E-05 O.5000E+03 0.6768E-05 0.1540E-04 0.3727E-05 0.6500E+03 0.2762E-05 0.7462E-05 0.1451E-05 l
0.8000E+03 0.1260E-05 0.4047E-05 0.6324E-06 O.1000E+04 0.5005E-06 0.2019E-05 0.2363E-06 I
acceleration percentiles 15th 50th 85th O.5000E+02 0.1490E-03 0.7040E-03 0.2290E-02 0.7500E+02 0.7430E-04 0.3480E-03 0.1270E-02 0.1500E+03 0.1730E-04 0.9750E-04 0.4000E-03 0.2500E+03 0.4910E-35 0.3220E-04 0.1470E-03 0.3000E+03 0.2950E-05 0.2010E-04 0,9550E-04 0.4000E+03 0.ll50E-05 0.9120E-05 0.4770E-04 0.5000E+03 0.4780E-06 0.4620E-05 0.2670E-04 i
0.6500E+03 0.1650E-06 0.1910E-05 0.1240E-04 0.8000E+03 0.5900E-07 0.8840E-06 0.6440E-05 0.1000E+04 0.1670E-07 0.3580E-06 0.3110E-05
MAINE YAfjKEE - 1992 PRELIMINARY LLNL SPECTRAL HAZARD ESTIMATES 1992 SEISMICITY INPUTS 1992 COMPOSITE GROUND MOTION ACROSS EXPERTS VARIABLE IS SPECTRAL VELOCITY velocity best estimate arithmetic geometric (cm / set )
mean mean Frequency 1.0 Hz 0.1000E+01 0.3211E-02 0.5038E-02 0.2798E-02 0.5000E+01 0.1086E-03 0.5288E-03 0.9506E-04 0.1500E+02 0.5364E-05 0.9018E-04 0.3820E-05 0.2500E+02 0.1088E-05 0.3610E-04 0.6306E-06 i
0.4000E+02 0.2131E-06 0.1436E-04 0.9440E-07 0.5000E+02 0.9260E-07 0.8978E-05 0.3693E-07 0.6000E+02 0.4556E-07 0.6014E-05 0.1576E-07 0.7000E+02 0.2456E-07 0.4234E-05 0.7697E-08 0.8000E+02 0.1419E-07 0.3096E-05 0.4387E-08 0.2000E+03 0.2409E-09 0.2840E-06 0.6936E-10 Frequency 2.5 Hz 0.1000E+01 0.3919E-02 0.7657E 0.3374E-02 0.6000E401 0.ll87E-03 0.6700E-03 0.1021E-03 0.1100E+02 0.2684E-04 0.2350E-03 0.2218E-04 0.1600E+02 0.9822E-05 0.1135E-03 0.7661E-05 0.2100E+02 0.4500E-05 0.6424E-04 0.3301E-05 0.2600E+02 0.2353E-05 0.4008E-04 0.1624E-05 0.3100E+02 0.1343E-05 0.2676E-04 0.8733E-06 0.3600E+02 0.8170E-06 0.1878E-04 0.50llE-06 0.4100E+02 0.5214E-06 0.1370E-04 0.3022E-06 0.2000E+03 0.4718E-09 0.1540E-06 0.1555E-09 Frequency 5.0 Hz 0.5000E+00 0.7478E-02 0.9675E-02 0.6230E-02 0.5500E+01 0.9818E-04 0.3723E-03 0.7735E-04 l
0.1050E+02 0.1959E-04 0.ll77E-03 0.1430E-04 0.1550E+02 0.6411E 0.5402E-04 0.4308E-05 0.2050E+02 0.2639E-05 0.2947E-04 0.1619E-05 0.2550E+02 0.1245E-05 0.1782E-04 0.6945E-06 0.3050E+02 0.6431E-06 0.ll55E-04 0.3261E-06 0.3550E+02 0.3553E-06 0.7882E-05 0.1638E-06 0.4050E+02 0.2066E-06 0.5592E-05 0.8674E-07 0.2000E+03 0.3086E-10 0.3623E-07 0.1226E-10 Frequency 10.0 Hz-0.5000E+00 0.3746E-02 0.5115E-02 0.2904E-02 0.2500E+01 0.2891E-03 0.4747E-03 0.1922E-03 0.4500E+01 0.9041E-04 0.1595E-03
- 0.5462E-04 0.6500E+01-0.3918E-04 0.7429E-04 0.2200E-04 0.8500E+01 0.1988E-04 0.4061E-04 0.1049E-04 0.1050E+02 0.lll2E-04 0.2450E-04 0.5537E-05 0.1250E+02 0.6660E-05 0.1582E-04 0.3133E-05 0.1450E+02 0.4197E-05 0.1073E-04 0.1865E-05 0.1650E+02 0.2751E-05 0.7571E-05 0.1155E-05 0.1850E+03 0.8920E-11 0.1510E-08 0.3457E-ll
=.
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Frequency 25.0 Hz 0.2000E+00 0.3697E-02 0.5014E-02 0.2667E-02 0.2200E+01 0.8803E-04 0.1258E-03 0.4092E-04 I
0.4200E+01 0.1514E-04 0.2614E-04 0.4585E-05 O.6200E+01 0.36BIE-05 0.8356E-05 0.6739E-06 0.8200E+01 0.1057E-05 0.3378E-05 0.ll54E-06 0.1020E402 0.3253E-06 0.1569E-05 0.2365E-07 0.1220E+02 0.1063E-06 0.7966E-06 0.5645E-08 0.1420E+02 0.3743E-07 0.4315E-06 0.1520E-08 0.1620E+02 0.1442E-07 0.2468E-06 0.4446E-09 O.1820E+03 0.1000E-19 0.6069E-12 0.1000E-Il i
Uniform Hazard Velocity Spectra Frequency Best estimate Arithmetic Geometric (Hz) mean mean Return period 500 years 0.1000E+01 0.1252E+01 0.1934E+01 0.ll73E+01 0.2500E+01 0.1411E+01 0.2684E+01 0.1307E401 0.5000E401 0.1037E+01 0.1596E+01 0.9302E+00 O.1000E+02 0.7416E+00 0.9442E+00 0.6237E+00 0.2500E402 0.2966E+00 0.3637E+00 0.2359E+00 Return period 1,000 years 0.1000E+01 0.1741E401 0.3172E+01 0.1632E401 0.2500E+01 0.2013E+01 0.4469E+01 0.1864E+01 0.5000E+01 0.1522E+01 0.2658E+01 0.1358E+01 0.1000E+02 0.ll46E+01 0.1510E+01 0.9406E+00 0.2500E+02 0.4627E+00 0.5710E+00 0.3512E+00 Return period 2,000 years 0.1000E+01 0.2420E+01 0.5177E+01 0.2269E+01 0.2500E+01 0.2872E+01 0.7107E+01 0.2659E+01 i
0.5000E+01 0.2234E+01 0.4427E+01 0.1984E+01 0.1000E+02 0.1772E+01 0.2414E+01 0.1419E+01 0.2500E+02 0.7219E+00 0.8964E+00 0.5229E+00 Return period 5,000 years 0.1000E+01 0.3741E+01 0.9146E+01 0.3510E+01 0.2500E+01 0.4592E+01 0.1195E+02 0.4252E+01 0.5000E+01 0.3710E+01
'0.7797E+01 0.3273E+01 0.1000E+02 0.3012E+01 0.3984E+01 0.2442E+01 0.2500E+02 0.1300E+01 0.1627E+01 0.8848E+00 Return period 10,000 years 0.1000E+01 0.5154E+01 0.1407E402 0.4881E+01 0.2500E+01 0.6434E+01 0.1700E+02 0.6050E401
-0.5000E+01 0.5444E+01 0.1139E+02 0.4780E+01 l
0.1000E402 0.4276E+01 0.5634E+01 0.3392E+01 0.2500E+02 0.2027E+01 0.2418E+01 0.1317E+01 l
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l Uniform Hazard Velocity Spectra Frequency percentiles 15th
-50th 85th j
Return period 500 years 1.00 0.827E+00 0.120E+01 0.262E+01 2.50 0.752E+00 0.131E+01 0.347E+01 5.00 0.523E+00 0.933E+00 0.218E+01 10.00 0.337E+00 0.655E+00 0.140E+0]
25.00 0.142E+00 0.254E+00 0.538E+00 Return period 1,000 years 1.00 0.103E+01 0.170E+01 0.411E+01 2.50 0.994E+00 0.188E+01 0.566E+01 5.00 0.720E+00 0.137E+01 0.353E+01 10.00 0.480E+00 0.994E+00 0.227E+01 25.00 0.192E+00 0.384E+00 0.841E+00 i
l Return period 2,000 years j
1.00 0.125E+01 0.239E+01
~0.628E+01 2.50 0.131E+01 0.270E+01 0.802E+01 5.00 0.991E+00 0.201E+01 0.567E401 10.00 0.681E+00 0.151E+01 0.335E+01 25.00 0.253E+00 0.580E+00
.0.132E+01 Return period 5,000 years 1.00 0.176E+01 0.378E+01 0.107E+02 4
2.50 0.192E+01 0.437E+01 0.123E+02 5.00 0.151E+01 0.335E+01 0.949E+01 10.00 0.lllE+01 0.259E+01 0.533E+01 25.00 0.405E+00 0.100E+01 0.231E+01 Return period 10,000 years 1.00 0.228E+01 0.524E+01 0.158E+02 2.50 0.256E+01 0.620E+01 0.168E+02 5.00 0.208E+01 0.491E+01 0.133E+02-10.00 0.161E+01 0.361E+01 0.736E+01 25.00 0.577E+00 0.151E+01 0.306E+01 i
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Probabilities of Exceedance of Design Spectrum For best estimate of hazard frequency period prob. of exceedance 0.50 2.00 0.399E-05 1.00 1.00 0.716E-05 1.50 0.67 0.124E-04 2.00 0.50 0.234E-04 3.00 0.33 0.542E-04 4.00 0.25 0.739E-04 6.00 0.17 0.190E-03 10.00 0.10 0.436E-03 25.00 0.04 0.603E-03 For 15.0 percentile hazard i
0.50 2.00 0.914E-07 1.00 1.00 0.271E-06 1.50 0.67 0.677E-06 2.00 0.50 0.174E-05 3.00 0.33 0.534E-05 i
4.00 0.25 0.817E-05 j
6.00 0.17 0.269E-04 10.00 0.10 0.717E-04 25.00 0.04 0.818E-04 For 50.0 percentile hazard J.50 2.00 0.415E-05 j
1.00 1.00 0.682E-05 l.50 0.67 0.ll3E-04 2.00 0.50 0.205E-04 i
3.00 0.33 0.471E-04 l
4.00 0.25 0.631E-04 t
6.00 0.17 0.151E-03 10.00 0.10 0.332E-03 l
25.00 0.04-0.424E-03 l
For 85.0 percentile hazard 0.50 2.00 0.ll6E-03 1.00 1.00 0.134E-03 1.50 0.67 0.170E-03 2.00 0.50 0.248E-03 3.00 0.33 0.439E-03 4.00 0.25 0.489E-03 6.00 0.17 0.787E-03 10.00 0.10 0.126E-02 25.00 0.04 0.153E-02 For arithmetic mean estimates of hazard 0.50 2.00 0.795E-04 1.00 1.00 0.107E-03 L
1.50 0.67 0.145E-03 2.00 0.50 0.217E-03 3.00 0.33 0.341E-03 4 00 0.25 0.352E-03 6.00 0.17 0.508E-03 10.00 0.10 0.696E-03 25.00 0.04 0.839E-03
..