ML20151X776

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Forwards Plant Meteorological Tower Parameters for Jan-Apr 1988,per Open Items from Insp Repts 50-445/88-07 & 50-446/88-06
ML20151X776
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 08/19/1988
From: Counsil W
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
TXX-88624, NUDOCS 8808260101
Download: ML20151X776 (3)


Text

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'A FE Log i TXX-88624 File # 902.3

1UELECTRIC August 19, 1988

% mism G. CousmJ tarnatw 6ke henJew U. S. Nuclear Regulatory Connission

. Attn: Document Control Desk Washington, D.C. 20555

SUBJECT:

C0 DAN',HE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET N05. 50-445 AND 50-446 HETE0R0 LOGICAL DATA AVAILABILITY REF: NRC letter from R. F. Warnick to W. G. Counsil dated March 3, 1988 (NRC Inspection Report Hos. 50-445/88-07 and 50-446/88-06)

Gentlemen:

In partial response to the referenced letter dealing with Nuclear Regulatory Connission (NRC) open items 445/8807 02 and 446/8806-02, TV Electric hereby 4

submits a tabulation of the CPSES primary meteorological tower parameters for the period January 1,1988, through April 18, 1988.

) It should be noted that for each parameter, the percent recovery is well above 1

~

90 percent as specified in ANSI /ANS-2.5-1984, which is endorsed by Regulatory Guide 1.23, Second Proposed Revision 1 (April, 1986). In addition, the joint

percent data recovery for 10m wind speed,10m wind direction and 6010m delta temperature during this period is 98 percent.

l To ensure that the meteorological data are within s)ecific accuracy l specifications, quality checks have been performed )y the computer system that generated the hourly average values and by physical examination of the data l itself. Some of the various quality checks that were performed on the data include:

o Checks for reading values outside sensor range; o Checks for detecting sticky sensor bearings; i o Data check with adjacent tower level sensors for improper i range setting and/or out-of-calibration problems; o Checks for determining effects of day time inversions.

8808260101 880819 "

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s TXX-88624 August 19, 1988 Page 2 of 2 As a result of the various quality checks perfonned on the meteorological data for this time period, the percent data recovery for each parameter presented in the attached table is considered to be valid.

Very truly yours

'7

/W.dew G. Counsil RSB/grr Attachment c - Mr. J. H. Wilson, OSP-NRC Mr. R. D. Martin, Region IV Resident inspectors, CPSES (3) l

, i Attachment to TXX-88624 August 19, 1988 Page 1 of 1 CPSES PERCENT DATA RECOVERY FROM PRIMARY METEOROLOGICAL TOWER FOR Tile PERIOD JANUARY 1, 1988 TO APRIL lli, 1988 Primary Tower Total Missing Recoverable Percent Data Parameter Hours Hours Hours Recovery 10m Wind Speed 2,616 35 2,581 99 10m Wind Direction 2,616 35 2,581 99 10m Ambient Temperature 2,616 41 2,576 99 10m Sigma Theta 2,616 35 2,581 99 60m Wind Speed 2,616 71 2,545 97 60m Wind Direction 2,616 79 2,537 97 60m Ambient Temperature 2,616 61 2,555 98 60-10m Delta Temperature 2,616 57 2,559 98 Precipitation 2,616 14 2,602 99 Combined 10m Wind Speed 10m Wind Direction, and 60-10m Delta Temperature 2,616 60 2,556 98