ML19326D551
| ML19326D551 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 04/22/1977 |
| From: | Vassallo D Office of Nuclear Reactor Regulation |
| To: | Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8006180728 | |
| Download: ML19326D551 (5) | |
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M UNITED STATES y-t.
NUCLEAR REGULATORY COMMISSION 4
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WASHINGTON, D. C. 20555
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April 22, 1977 Docket No: 50,329 330 Consumers Power Company ATTN: Mr. S. H.,1;owell Vic! President 212 West Michigan Avenue Jackson, Michigan 49201 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 Power Plants" (September 1975),
recommends that, if possible, hour-by-hour 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. Enclosure 2 provides a sample tape dump using this format. We would prefer receiving meteorological data magnetic tapes in the standard format; hcwever, we will accept data on magnetic tape in any reasonable format, if the format is completely described (per guidance in NUREG-0158, Part 1) and a sample tape dump is provided.
Questions on this standard format should 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 clearance number B-180225 (R0072). This clearance expires July 31, 1977.
Sincerely, Domenic B. Vassallo, Assistant Director for Light Water Reactors Division of Project Management
Enclosures:
As Stated 1
THIS DOCur"T CONTAINS P00; QUAUTY PAGES l
0006180 h
W a
crlosure 1 m
PIOPOSED NRMAT MR HOURLY METE 0HOLOGICAL DATA TO BE PLACED ON MAGNEI'IC TAPE Use:
9 track tape (7 will be acceptable)
Standard Label which would include Record Length = 160 Block 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 locatio'n (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 sure all five records are included, even if sorre 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 copying data onto the tape.
All data should bg given to a tenth of a unit except solar radiation which should be given to a hundreth of a unit.
'Ihis does not necessarily indicate the accuracy of the data.
(e.g. wind direction is usually given to the nearest degree but record it with a zero in the tenth's place. That is 275 degrees would be 275.0 degrees 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 l
only one level of data, use the upper lev._1.
t Enclosure l MAGNE7fIC TAPE METEORDIOGICAL DATA IOCATION:
DATE OF DATA RECORD:
I6 Identifier (can be anything)
I2 Year I3 Julian Day I4 Hour (on 24 hr clock)
ACCURACY FS.1 Upper Measurements: Level = meters F5.1 Wind Direction (degrees)
F5.1 Wind Speed (meter /sec)
F5.1 Sigma Weta (degrees)
FS.1 tabient Temperature ( C)
F5.1 ebisture:
F5.1 Other:
F5.1 Intermediate Measurements: Level = meters F5.1 Wind Direction (degrees)
FS.1 Wind Speed (meters /sec)
F5.1 Sigma h eta (degrees)
F5.1 Ambient Temperature (o C)
F5.1 bbisture:
F5.1 Other:
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Enclosure I.
F5.1 Iower Measurements: Ievel
= meters l
F5.1 Wind Direction (degrees)
F5. l_
Wind Speed (meters /sec)
FS.1 Sigma '1heta (degrees)
Ambient Temperature ( oC)
FS.1 F5.1 Moisture:
F5.1 Other:
F5.1 Temp Diff (Upper-Iower) ( C/100 meters)
F5.1 Temp Diff (Upper-Intermediate) { C/100 meters)
F5.1 Temp Diff (Intermediate-Iower) ( C/100 meters)
F5.1 Precipitation (m)
F5.2 Solar Radiation (cal /cn2/ min)
F5.1 Visibility (km)
F5.1 Other:
F5.1 Other:
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