ML20002B979
| ML20002B979 | |
| Person / Time | |
|---|---|
| Issue date: | 10/16/1980 |
| From: | Lewis J Office of Nuclear Reactor Regulation |
| To: | Markee E Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20002B972 | List: |
| References | |
| RTR-REGGD-01.023, RTR-REGGD-1.023, TASK-OS, TASK-SS-926-4 NUDOCS 8101070482 | |
| Download: ML20002B979 (1) | |
Text
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NUCLEAH HEGULATORY COT.* MISSION
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MEMORANDUM FOR:
Earl H. Markee, Jr., Leader Meteorology Section Accident Evaluation Branch Division of Systems Integration FRON:
Jackie Lewis Meteorology Section, AEB
SUBJECT:
TRIP REPORT - ASTM METEOROLOGY SUBCOMMITTEE MEETINGS On Octocer 7 and S I attended the ASTM subcommittee 0-22.11 (Meteorology) meeting in Philadelphia. is the agenda. The specific topics
~j discussed were standard methods for determining the dynamic performance of a wind vane and cup or propeller anemometers (I have draft copies),
standard methods for determining accuracy and precision of dewpoint measure-ments in the field, and two-system operational comparability.
These items l
could have a direct impact on Revision 1 of Regulatory Guide 1.23 which has specifications for measurement system accuracies.
In June, 1980, EPA published a report entitled "An Evaluation of the ASTM Standard Method for Determining the Performance of a Wind Vane" (EPA-600/4-80-023).
The accuracy specifications of various wind vanes were determined according to the ASTM standard method.
Only one vane would meet the Reg.
Guide 1.23 specifications.
It was noted at the meeting that, if the test t
were different, more (if not all) vanes would be " acceptable." The sub-committee decided that the test is a good state-of-the-art test and should not be changed. Regulatory Guide.1.23 does not specify a test method and l
several committee members suggested that the specifications in the guide be changed.
No similar testing has been done with anemometers.
Walt Hoehne of NOAA has been comparing the operational function of like instru-ments under field conditions. The subcommittee has committed to developing a j
standard for two-system operational comparability.
A proposed evaluation method is outlined in Enclosure 2.
NOAA Technical Memorandum NWS T&ED-16, " Precision of National Weather Service Upper Air Measurements," outlines some of the exper-iments done by NOAA applying this comparison.
This procedure may have applica-tions in the_ determination of the acceptability-of backup meteorological measure-ment systems for emergency preparedness.
The next meeting of the subcommittee will be held in Phoenix during the week of.
May 10, 1981.
Items on the agenda will include the anemometer standard, two-system operational comparability standard, and a mini-conference on acid rain, i
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C Jackie Lewis Meteorology Section Accident Evaluation Branch Division of Systems lntegration
Enclosures:
As stated 81.01070
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