ML20099D170
| ML20099D170 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 11/14/1984 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8411200232 | |
| Download: ML20099D170 (4) | |
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- p-s PHILADELPHIA ELECTRIC COMPANY.
9
~ 2301 MARKET STREET -
P.O. BOX 8699 PHILADELPHI A. PA.19101
.12151 841 4 5 o 2.
amoemaan sa o nessances NOV-14 j984
- Mr.. A. Schwencer, Chief-Licensing Branch-No. 2-Division of Licensing U.S. Nuclear Regulatory Corrmission.
Washington, D.C.
20555
SUBJECT:
Limerick Generating Station,; Units 1 and 2 Meteorological Monitoring System
REFERENCE:
'1)
Letter frm J. ' S. Kemper to A. - Schwencer, dated October 13, 1984-
-2)
. Letter from J.'
S. Kerrper to A.- Schwencer, dated February' 27, 1984,' Tape Submittal for-l Data Collection Period October 15, 1983 to L
ldanuary :15, ~ 1984~
~3)
Letter from J. S. Kemper to A. Schwencer, dated May 15, 1984, Tape Submittal - for Data Collection Period October 15, 1983 to April 15, 1984 4)
Letter from J. S. Kemper to A. Schwencer, L
dated August 15, 1984, Tape. Submittal for Data Collection Period April 16, 1984 to l
July 15, 1984 5)
Telepone Conference Call Between A. J. Marie,-
R. J. Stipcevich (PECo) and E. Markee (NRC),
on October 1,2, 1984, Discussion of LGS Meteor-ological System Data Recovery Rates l
FILE:
GOVT 1-1 04RC) l l
Dear Mr. Schwencer:
In accordance with the reference (1). letter, we are_ enclosing a magnetic tape cor.taining hour-by-hour meteorological data for the period of July 16, 1984 to October 14, 1984, The data included and l
tape formats are described on the attached pages.
The reference (5) conference call was held to discuss the criteria the NRC staff would use in assessing meteorological data recovery rates j
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at Limerick Generating Station.
It was agreed that until enough data 6[g[h pf is collected from the new meteorological system showing hour by hour cmparisons between towers, the NRC staff would review the prima.ry' tower only, without substitution from the back-up tower.
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'i Prior to ~~this discussion substituted data from' the' bacI[-up t'ower 1
was used. for the primary tower ' delta-tenperature (266 minus 26 ifoot
. elevations) for the period April (24 to duly 9, ;984.. Since the. data-
~
- Tost during this period was due to one:long system outage caused by.;
hardware problems, which.have since been corrected by:.the msceoro- ' _
SlogIcal' equipment manufacturer,-it was agreed that this perlod of data iwould be excluded from the: data recovery calculations.- Therefore, the
? revised joint data-recovery rates ofithe delta-terrperature (266 minus ~~
~
'26' foot elevations) and.each ofithe three' elevations of wind sensors for the period 0ctober 15,1983. to October 14, 1984 Cexcluding..the.
-period of substituted data) were: 97.4% for the 270-ft. level,-97.1%.
for the 175-ft level, and 97.2% for the 30-ft. ' level. -The Joint data recoveries for the period of July 16,.1984 to October 14, 1984 (data.on enclosed. tape) without. substitutions.were: 98% for the-270-ft. level,-
97.4% for the 175-ft level and 98.2% for the-30-ft.. level. : These '
values were calculated utilizing the NRC JFREQ program.
Sincerely,.
SNh JRE/dg/11088403-A
.. Enclosure
~
(See Attached Service List)
Copy to:
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1 Ecc:?JJudge Helen F. Hoyt1
- (w/o enclosur!)-
3
_dudge Jerry Harbour
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- dudge Richard F. Cole.
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Judge Gary J. Edles (w/o enclosure)
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Management Agency.
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Martha W. Bush, Esq.'
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Spence W.-Perry, Esq.
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~ day M.: Gutlerrez, Esq.
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Atomic Safety &-Llcensing
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Mr. James Wiggins (w/o-enclosure)
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p-TableI1-
'LimericN: Generating 1 Station Meteorological' Tower 1LData.
NRC Tape Format?
7/16784'i ::10/14/84
c x
TDataiDescription-Format Columns-
'ID Number:-(000021)
I6'
'1-6
' Year.
I2-8 Julian. Day; I3-
- 9 -Hour-
- I4-12-15 LUpper Wind Heightf(m x.10) (823),
I5 16-20:
270-Ft. Wind Direction (*Az x 10)
IS,
21-25; 1270-Ft'.. Wind Speed -(m/see x ;10)
I5 26-30 Turbulence Class
- IS 31-35'
' ~ ~
1 Spaces.
'15X 36-50 Intermediate Wind Height _(m xL10);(533)
I5:
51 ;
175-Ft.' Wind direction (*Az x110)
' I5 -
56-60' 175-Ft. Wind Speed. (m/sec 'x110)
I5 61-65' 175-Ft. Sigma Theta-(degrees x-~10)
I5
~66-70 _
Spaces 15X 71-85 I
Lower Wind Height.(m'x 10).(91)
I5 86-90 30-Ft. Wind Direction (*Az x 10)
I5 91-95 30-Ft. Wind Speed.(m/sec;x 10)
IS.96-100 30-Ft. Sigma-Theta (degrees x 10)
!5 101-105-i-
26-Ft. Ambient' Temperature'(*C x-10)
IS
-106-110.
' Dew Point Temperature (*C x 10)
I5 111-115 Spaces SX-116-120 266-26 Ft. Delta Temperature-(*C/100 m x 10)
'IS
,121-125 Spaces-5X
- 126-130
-171-26 Ft. Delta Temperature (*C/100 m x 10)
I5.
131-135 Precipitation (:mm x 10)-
I5 136-140 Satellite Wind Height (m x 10) (98)
I5
-141-145' Satellite Wind Direction (*Az x 10)
I5 146-150 Satellite Wind Speed (m/see x 10)
I5 151-155
~
~ Satellite Sigma Theta (degrees x.10)
I5 156-160 Turbulence' Classification System (Gustiness) 1 = Very Unstable 2 = Slightly_ Unstable 3-= Moderately Unstable 4.= Neutral 5 = Stable.
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