ML19220B589
| ML19220B589 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/22/1977 |
| From: | Vassallo D Office of Nuclear Reactor Regulation |
| To: | Arnold R Metropolitan Edison Co |
| References | |
| NUDOCS 7904270061 | |
| Download: ML19220B589 (5) | |
Text
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UNITED STATES 3*
NUCLEAR REGULATORY COMMisslON
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WASHINGTON, D. C. 20555 svwgf1
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April 22,1977
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Docket No:
50-320 Metropolitan Edison Ccepany ATTN:
R. C. Arnold Vice President - Generation P. O. Box 542 Reading, Pennsylvania 19603 Gentlemen:
SUBJECT:
STANDARD FORMAT FOR METEOROLOGICAL DATA ON MAGNETIC TAPE Regulatory Guide 1.70, Revision 2, " Standard Format and Content of Safety Analysis Reports for Nuclear Pcwer Plants" (September 1975),
recommends that, if possible, hour-by-nour meteorological data should be provided on magnetic tape.
The draft Environmental Standard Review Plan for meteorology (included in NUREG-0158, Part 1, January 1977) provides some guidance on the types of magnetic tapes that are acceptable and identifies limitations on block size and density. We have also developed a standardized format (Enclosure 1) for providing hour-by-hour meteorological data on magnetic tapes that would facili-tate our review of atmospheric diffusion characteristics and cooling system impacts. provides a sample tape dumo using this format. We would prefer receiving meteorological data magnetic tapes in the standard format; however, we will accept data on magnetic tace in any reascnable format, if the forma' is completely described (par guidance in NUREG-0158, Part 1) and a mple tape dump is proi/ided.
Questions on this standard format shouia be referred to William Snell, Hydrology-Meteorology Branch, Division of Site Safety and Environmental Analysis, phone number 301-492-7384.
This request for generic information was approved by GA0 under blanket clearancenumberB-180225(RC072).
This clearance expires July 31, 1977.
Sincerely,
, A<LS"g Domenic B. Vassallo, Assistant Director for Light Water Reactors Division of Project Management
Enclosures:
As Stated 80 262 pp-790427006[
h
PPCPCSED ECR?AT FCR HCURLY METECRCIIGICAL DATA TO SE PIACED CN PAGNCTIC TAPE Use:
9 track tace (7 will be acceptable)
Standard Label which would include Record Length = 160 Slock Size (3200 - fixed block size)
Density (1600 BPI - 800 will be accepted)
Do Not Use:
Magnetic tapes with unformatted or spanned records.
At the beginning of each tape, use the first five (5) records (which is the equivalent of ten cards) to give a tape description.
Include plant name, and location (latitude, longitude) dates of data, in-formation explaining data contained in the "other" fields if they are used, height of measurements, and any additional information pertinent to identification of the tape. Make sere all'five records are included, even if some are blank. Format for the first five records will be 160Al. Meteorological data format is (I6, I2, I3, I4, 25F5.1, F5.2, 3FS.1).
Decimal points should not be included when ccpying data onto the taoe.
All data should be given to a tenth of a unit except solar radiaticn which should be given to a hundreth of a unit.
This does not necessarily indicate the accuracy of the data.
(e.g. wind direction is usually given to the nearest degrr but record it with a zero in the tenth's place. That is 275 degrees would be 275.0 degreas and placed on the tape as 2750. )
All nines in any field indicates a lost record (99999). All sevens in a wind direction field indicates calm (77777).
If only two levels of data, use the upper & lower levels.
If only one level of data, use the upper level.
-E3
Encicsure I MAGNEI'IC TAFE FETEOPCIDGICAL DATA IOCATICN:
DATE OF DATA RECOFD:
I6 Identifier (can be anything)
I2 Year I3 Julian Day I4 Hour (on 24 hr clcck)
ACCURACY F5.1 Upper Measurements: Level = meters FS.1 Wind Direction (degrees)
_ F5.1 Wind Speed (meter /sec)
F5.1 Sigma 'Iheta (degrees)
F5.1 A:rbient Temperature ( C)
F5.1 bbisture:
F5.1 Other:
F5.1 Intermediate Measurements:
Level = meters F5.1 Wind Direction (degrees)
F5.]
Wind Speed (meters /sec)
F5.1 Sigma Theta (degrees)
F5.1 Ambient Temperature (o C)
F5.1 Sbisture:
F5.1 Other:
80~264
Enclosure I F5.1 Iower Measurements: Level
= meters F5.1 Wind Direction (degrees)
F5.1 Wind Spd (meters /sec)
F5.1 Sigma Theta (degrees)
F5.1 ATbient Temperature ( oC)
F5.1 Itisture:
F5.1 Other:
FS.1 Temp Diff (Upoer-Lower) ( C/100 meters)
F5.1 Ibmp Diff (Upper-Intermediate) ( C/100 meters)
FS.1 Tem 7 Diff (Intermediate-Icwr) ( C/100 meters)
F5.1 Precipitation (m)
F5.2 Solar Radiation (cal /cm2 min)
/
F5.1 Visibility (km)
_F5.1 Other :
F5.1 Other:
80'265
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