ML20006E215
| ML20006E215 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 02/09/1990 |
| From: | De Agazio A Office of Nuclear Reactor Regulation |
| To: | Thoma J Office of Nuclear Reactor Regulation |
| References | |
| TAC-75926, NUDOCS 9002220316 | |
| Download: ML20006E215 (32) | |
Text
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February 9, 1990 c
Docket 50-255 MEMORANDUM FOR: John 0. Thoma, Acting Director Project Directorate 111-1 Division of Reactor Projects - III, IV, V & Special Projects Office of Nuclear Reactor Regulation FROM:
Albert W. De~Agazio, Sr. Project Manager Project Directorate 111-1 Division of Reactor Projects - III, IV, V & Special Projects Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF MEETING WITH CONSUMERS POWER COMPANY -
PALISADES PORY BLOCK YALVE (TAC 75926)
A meeting was held in Orlando, Florida on January 24, 1990, to discuss certain aspects of the staff's analysis of the data collected during block valve and Pilot-Operated Relief Valve (PORV) tests. The testing was conducted for Consumers Power Company (CPCo) at the Wylie Laboratory test facitity in Norco, California. is the list of attendees at the meeting.
The meeting' focused upon the reliability of block valve (MO-1042A) test results i~
relating to thrust (stem force). Most of the data discussed were provioed by CPCo and were analyzed by EG&G, Idaho, serving as consultant to the staff.
The staff's presentation culminated with the tentative conclusion that the thrust data.for M0-1042A appear unreliable. The staff did note, however that based on our analysis of torque and motor current test data, which are considered reliable,and the sucessful closures of the valve during testing, there'is adequate margin to assure operability for the present. However, the operability margin has not been quantified because of the uncertain thrust measurements. The margin is of concern because it can be affected by valve degradation and maintenance activities. contains copies of the data plots that were discussed at the meeting.
WrMdShn04by Albert W. De Agazio, Sr. Project Manager Project Directorate III-I Division of Reactor Projects - III, IV, V & Special Projects f
Office of Nuclear Reacter Regulatior.
Enclosures:
As stated DISTRIBUTION EDOCrJ.1 m LE OGC CONTACT:
NRC & LOCAL PDRs EJORDAN A. DeAgazio PD31 R/F NRC PARTICIPANTS 492-1325 JSNIEZEK ACRS(10)
JTHOMA JCLIFFORD ADEAGAZIO I
PM/PD DRSP (A)
PD31:DRSP 01 ADEAGAZIO JTHOMA 1
2/Ql90 2/o l90
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/ '-
J 9002220316 900209
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]j DR ADDCK 0500 5
3 l
1 ENCLOSURE 1 MEETING ATTENDANCE DATE:
January 24,1990 l
PLACE:
Orlando, Florida UTILITY AND DOCKET NO:
ConsumersPowerCo.(PalisadesPlant)
Docket No. 50-255 l
SUBJECT:
Consumers Power Company block valve and PORY test results NAME AFFILIATION Paul Damerell MPR Associates Albert De Agazio NRR/DRSP/PDIII-1 Richard Kiessel NRR/DOEA/0GCB Robert Leon Liberty Technology Thomas Scarbrough NRR/DET/EMEB Richard Smedicy Consuners Power Company Gecrge Smith Consumers Power Company Robert Steele INEL Edmund Sullivan NRR/DET/EMEB
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Figure 25. Block valve, valve stem position history Test No. 14.
t 1.
=
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- 4 9000 y
t 1
g l
l i
2008
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m 1500 t
c u
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m L.
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i 1
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19 15 29 25 30 Time (sec)
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ry..
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as 1500-t t
a
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see
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8 5
18 15 29 25 30 Time (sec) 1 4
Figure 27. PORV upstream static pressure' history Test No. 14.
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e
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t 4000
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l
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-1.20x10'
~
_g, g jg4 1....n....
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4 6
8 10 12 Tinie (sec)
Figure 31. Block valve stem force history Test 10o.'14.
.u-,
n s
,,sr
~ - -
.n
~~
160
. L..
torsee vs torque seitch position Sers-06-25 me.145155-41
/i -
150 -
8088849808 WIER W POLVIIBillAL = 1 88888:0808 1 I Beta set mester i
~
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A1 42.39996 U
i g
130 -
<23 I
l v
See of the squares of the resi6sals = 151.9997 i
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120 -
s-o y
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g 110 -
g
+
t 100 -
90 7 n
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s s
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e i
s u
I I
s I
1 1.2
'1.4 1.6 1.8 2
2.2 2.4 i
Torque Switch Setting D
Test 1
+
Test 2 tJnear FR l
- l 4 -
Figure A-3.
Torque versus torque ' switch position based on limitorgere motor' operator. calibration.
I
=
- +?
g._
4.,.
- . ~ 'W 22 -
4 21 -
20 -
19 -
f nn-18 -
e a DD O o
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ea gO Eb 16 -
a
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. 14 -
13 -
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r 0.006 0.007 0.008 0.009 0.01:
Stem Factor Figure A-4.
Thrust versus ~ stem factor at 132 ft Ib torque.
O
-.--I v-
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F
"'f
-r*""
b-4 u-a 21.=
e
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i
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I 18 -
nn e e a*
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e a ::
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t i
15 -
14 -
l 13 -
i II I
e a
s s
y a
i i
0.1 0.12 0.14 0.16 0.18
.O.2 Figure A-5.
Thrust versus stem not coefficient of friction at 132 ft Ib torque.
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-...m..
-....-__._.i
.i-_.
,__,,______s 3
+
.s.
I 25 E
24 -
t 23 -
22 -
21 -
20 -
19 -
J 18 -
mv OE 17 -
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3 12 -
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11 :
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10 -
94 8
i i
s i
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i s
i.
i 1
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1.8 2
2.2
- 2.4 Torque Sudtch Setung 0~
==0.10
+
u-0.15 0.
u=0.20 Figure A-6.
Calculated stem force versus torque switch position at three stem net. coefficients of friction.
4 i
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cr t.
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l
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....l
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....l
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8.5 1
1.5-2 2.5
-3 Time (sec)
(shifted)
Figure A-7.
AP effects on final torque comparisons.
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5 le 15 20 25 Time (sec) i i
l Figure A-II. Motor operator motor current history comparisons for test Numbers T-13, 14 and 15.
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