ML19351D253

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Forwards Meteorological Data Tape Used for Probabalistic Risk Assessment for 1972-76,in Response to NRC Request at 801002 Meeting Re Preliminary Risk Assessment.W/O Encl
ML19351D253
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 10/07/1980
From: Boyer V
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Tedesco R
Office of Nuclear Reactor Regulation
References
NUDOCS 8010090333
Download: ML19351D253 (2)


Text

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PHILADELPHIA ELECTRIC COMPANY .

2301 M ARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101

v. s. ec y ca (2i si e 4 i.4 soo sR. vicE ensioc"' October 7, 1980 MUCLE AR POWE R Mr. Robert L. Tedesco, Assistant Director Docket Nos. 50-352 U.S. Nuclear Regulatory Commission 50-353 Division of Licensing Office of Nuclear Reactor Regulation Washington, DC 20555

Subject:

Preliminary Risk Assessment-Limerick Generating Station

Dear Mr. Tedesco:

Accompanying this letter is a copy of the meteorological data tape used for the Limerick Probabalistic Risk Assessment per your request at our meeting of October 2, 1980. This tape is for the period 1/1/72 through 12/31/76. The tape was created on a CDC CYBER 6600 computer operating under the NOS/ bel system. The characteristics of the tape are as follows:

No label, 9 tracks,1600 BPI, EBCDIC, 80 characters / record, blocked 3200, 40 record blocks, fixed length records. There is an end of file behind each month of data.

All mis sing or uninterpretable data have been replaced with dnta from other meteorological stations in the Limerick program or as a last resort, with data from the Philadelphia International Airport. The day integer on two records of the tape are blank, but the data on these records is complete and in the correct sequence. The two records ar*

for March 7, 1972, hour 7 and hour 23.

The tape format is listed on Figure 1.

Sincerely,

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Figure 1 LIMERICK GENERATING STATION TAPE FORMAT Data Description Format Columns 4

Hour of Day I2 1-2 Month I2 3-4 Day I2 5-6 Year I2 7-8 30-Ft. Wind Direction - (*Az) I3 9-11 30-Ft. Wind Speed - (MPH) I2 12-13 175-Ft. Wind Direction - (*Az) I3 14-16 175-Ft. Wind Speed - (MPH) I2 17-18 270-Ft. Wind Direction - (*Az) I3 19-21 270-Ft. Wind Speed - (MPH) I2 22-23 Spaces 10X 24-33 26-Ft. Temp. - (*F) x 10 I4 34-37 Space 1X 38 171-26 Ft. Delta Temp. - (*F) x 10 I4 39-42 266-26 Ft. Delta Temp. - (*F) x 10 I4 43-46 Spaces 20X 47-66 Precip. - (Inches) x 100 I3 67-69 Spaces 6X 70-75 Satellite Wind Direction - (*Az)* I3 76-78 Satellite Wind Speed - (MPH)* I2 79-80

  • Not used in analysis.

2/11

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