ML20237J603
| ML20237J603 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/27/1987 |
| From: | Gucwa L GEORGIA POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| SL-3112, NUDOCS 8709040019 | |
| Download: ML20237J603 (8) | |
Text
_
Georgia Fbwer Company 333 Predmont Avenue Atianta, Georg<a 30308 Telephone 404 520 0526 Maihng Address Post Ofhce Box 4545 Atlanta Georgia 30302 h
Georgia Power L T. Gucwa Manager Naclear SaNty and Licensng SL-3112 0488m X7GJ17-V790 August 27, 1987 U. S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C.
20555 PLANT V0GTLE - UNIT 1 NRC DOCKET 50-424 OPERATING LICENSE NPF-68 REVISION 2 TO INSERVICE TESTING PROGRAM Gentlemen:
During a telephone conference call with the NRC on July 31, 1987, it was agreed that Georgia Power Company (GPC) would withdraw Relief Request RR-26 contained in Revision 2 of the Plant Vogtle Unit 1 (VEGP-1)
Inservice Testing (IST)
Program Document (ISI-P-008).
The subject document revision was submitted to the NRC by GPC letter SL-2735 dated June 25, 1987.
The reason for withdrawal of Relief Request RR-26 is as follows:
The two spray additive tank vacuum breakers, which are a part of the Containment Spray System (System No. 1206), were classified as check valves during the initial scoping of the VEGP-1 IST Program.
Consequently, the testing prescribed by the IST Program was manual stroking on a quarterly basis since there is no way to test the valves with flow.
After submittal of Revision 2 of the IST Program, which contained Relief Request RR-26 concerning the testing of these vacuum breakers, plant personnel determined that the spray additive tank vacuum breakers should be classified as safety valves rather than check valves. is a catalog excerpt describing the subject valve and clearly indicates that +he valve is a pressure relief device.
Therefore, Relief Request RR-26 is being withdrawn and the vacuum breakers are being reclassified in the IST Program as safety valves.
These valves will be tested per the requirements of ASME Section XI, Table IWV-3510-1, as are other safety valves in the IST Program.
Provided herein as Enclosure 2 are pages from Revision 2 of the VEGP-1 IST Program document which have been modified to reflect the change outlined above.
Instructions for incorporating the modified pages are included in Enclosure 2.
s o'/1 8709040019 870027' T'
DR ADOCK 0500 t[f
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l 1
GeorgiaPower d U. S. Nuclear Regulatory Commission August 27, 1987 Page Two This submittal and the enclosed ten (10) copies thereof should be forwarded to the Office of Nuclear Reactor Regulation for review.
A copy of this submittal has been forwarded to NRC Region II.
Should you have any questions in this regard, please contact this office at any time.
Sincerely, W&
e L. T. Gucwa l
JAE/PAH/im
Enclosure:
1.
Vendor Catalog Excerpt - Bronze Relief Valves for Vacuum Service 2.
Modifications to Revision 2 of Vogtle Unit 1 IST Program I
l Document (ISI-P-008) c:
(see next page) l 1
0488m um
Georgia Power d U. S. Nuclear Regulatory Commission August 27, 1987 Page Three i
c: Georaia Power Comoany Mr. R. E. Conway Mr. J. P. O'Reilly Mr. G. Bockhold, Jr.
Mr. J. F. D'Amico Mr. C. H. Hayes GO-NORMS loitthern Comoany Servicn Mr. R. A. Thomas Mr. J. A. Bailey 3
\\
Shaw. Pittman. Potts & Trowbridae Mr. B. H. Churchill, Attorney-at-Law Troutman. Sanders. Lockerman & Ashmore Mr. A. H. Domby, Attorney-at-Law U. S. Nuclear Regulatorv Commission Dr. J. N. Grace, Regional Administrator Ms. M. A. Miller, Licensing Project Manager, NRR (2 copies)
Mr. J. F. Rogge, Senior Resident Inspector-0perations, Vogtle l
Gegroians Against Nuclear Eneray Mr. D. Feig Ms. C. Stangler i
1 0488m nwns
m 4
1 Georgia Power h(
l 1
ENCLOSURE 2 j
i PLANT V0GTLE - UNIT 1 NRC DOCKET 50-424 OPERATING LICENSE NPF-68 MODIFICATIONS TO REVISION 2 0F V0GTLE UNIT 1 INSERVICE TESTING PROGRAH_QQCUMENT (ISI-P-008) l The modified pages to Revision 2 of the Vogtle Unit 1 Inservice Testing Program document (ISI-P-008) resulting from the withdrawal of Relief Request RR-26 would be incorporated as follows:
R.emove Page Insert Page Summary of Changes -
Summary of Changes -
pg. 2 pg. 2 pg. 4-25 pg. 4-25 pg. 5-26 Delete page I
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0488m E2-1 08/27/87 SL-3112 l
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ENCLOSURE 1 i
PLANT V0GTLE - UNIT 1 i
NRC DOCKET 50-424, OL #NPF-68 VENDOR CATALOG EXCERPT - VACUUM RELIEF VALVES 213 Bronze Relief Valves for Vacuum Service
, ri... on..,...,
sue weight Height Dia. of Recomrnendations: The No. ii 55 V
]
Pounasi 6 Holes is designed for use as a vacuum breaker.
~
inches Each i Inches i Inches It is used on low pressure tanks steam ii %
u
.31 2%
jacketed ketties, and similar apparatus Q
(%
.46 ' 3 552 where possible formation of a vacuum y_ ' g 1
.75 ! 3%
' 52 e uld result in damage to the apparatus
]
h 39 to j 3g 34 through the effects of atmospheric pres-Q
[_0 p;
i.7 4%
i s.g, sure. It is rated for steam pressures
_came i
!0 up to 2 50 psi. 400 f-
- - i
- 0 l
l0 Operation : In service, the disc of the valve is normally held to its E
- m m4 3
seat. both by spring tension and by the pressure in the apparatus to l0 which the valve is attached When the pressure in the vessel falls N.. i tss v
{
j j
below atmosphere the sprmg tension is overcome and the disc is s acuum R.iief voiv.
pulled from its seat. Air is then admitted through the valve, thus rh. No. If 55 V is roved for I
j u
i I
preventing the vacuum from reaching the danger point.
.e
. pr.
.r.s p to 250 pii. 404 7.
J Design: The valves have a Discharge capacities two-piece body and seat
[
bushing w hich removes the Absolute Pressure in Relief Capacity Set Closect Tank or Vessel In Cubic Feet of seat from the influence of i
Pressure into Which Valve Free Air per Minute l
l body distortion when the is Discharging At 00 F 1
g vahe is being installed.
Absolute.Vacuurn! Absolute Vacuurn: Differ-p l11 The body, seat bushing.
Press. Mercury l Press. Mercuryj entia!
),h in h inch in n
he and disc are bronze. The _ Psia
. Inches l Pma Inches i Psi spring is stainless steel i
11.7 b.11 0.5
.8 3.0 b.0 11.0 20.0 e
l 11.2 7.13 1.0 1.4 5.6 11.0 20.5 38.0 l
l l
Pressure setting: The 10.7 8.14 1.5 2.1 8.3 16.3 30.0 56.3 g
vakes are regularly set to 10.2 9.16 2.0 l
2.8 11.0 21.7 J9.3 73.2 e
op(n at 5 inches vacuum 12.2 5.09 9.7 10.18 2.5 i 3.5 13.7 26.9 48.4 81.6 p
r 9.2 11.20 3.0
! 4.2 16.4 32.2 57.6 106.6 r
i rnercurv and have a spring 66.7 l 123.5 8.7 12.22 3.5 4.9 19.1 37.2
-)
which permits en adjust-75.9 139.2 8.2 13.23 4.0 5.6 21.9 42.3 ment range of to inches 7.7 14.25 4.5 6.3 24.5 47.5 84.7 156.0 vacuum mercury Springs 22.2 33.2 8.7 12.22 1.0 4.2 8.8 14.4 32.4 ll for a highet or low er adjust-8.2 l 13.23 1.5 6.1 12.7 20.9 48.6 42.3 i 62.0 l
ment range are available 7.7 i 14.25 2.0 8.1 16.7 27.3 b
on special order' j
7.2 15.27 2.5 10.0 20.7 33.8 52.6 77.8 9.7 10.18 1
6.7 16.29 3.0 11.9 24.5 40.3 63.2 93.2 I
6.2 17.31 3.5 13.9 28.5 47.0 71.5 108.2 1
Tests: The valves are regularly tested for tight.
5.7 l 18.32 4.0 15.8 32.4 53.5 81.7 t 124.2 5.2 l 19.34 4.5 17.8 36.4 60.0 92.0 l 138.0 1
ness at the seat with 50 4.7 1 20.36 5.0 19.7 40.3 64.6 101.8 i 152.0 psi water pressure.
I Capacities: Capacities are shown above. Since in vacuum service, upstream pressure is considered
(
the set pressure is a point at which the valve is set for practical purposes to be a constant i4 7 psia.
to open but at which it is actustly still closed, no It is possible to obtain the pressure differential
' low rates are consequently obtainable. In order to necessary for flow rates. only by an increase in the cause the valve to open and provide flow rates, a vacuum or by a decrease in the absolute pressure on pressure differential must exist bet s ce r' the set the downstream side of the valve. With each increase pressure and the pressure at which the valve dis-in the pressure differential, the valve will open wider cnarges. The pressure differential. generally known providing an increased flow orifice area and a as overpressure or accumulation, is obtained by an higher flow rate. Capacities in the table reflect increase in the upstream pressure.
these conditions.
G.n. col inf ormotion.. popes 204 and 205 Pipe scole and dirt in piping systems are the greatest Dirt Regardless of how clean piping rnaterials are when l
enemies of volves, reg.ilotors, meters, and other me.
In Piping being installed. a generous use of strainers or sedi-chonical devicars. They con cause endless trouble
- y,*u h ing the protection provided, relotively inexpensive.
and serious domoge. Such foreign metter lodges on d
ment separators is a sound investment, and consider.
volve seats and starts leokoge; it gets into outomatic For the Crane line of Y.pottern sediment seporotors.
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i Pages 4-23
- The program was also changed to delete the closed safety position for valves 1205-U6-009 and 1205-U6-010.
These valves are not required to close to i
perform a safety function.
It should i
be noted that valves FV-0610 and FV-0611 are normally open and, as such, allow flow to the suction side of the i
pumps regardless of the position of i
check valves 1205-U6-009 and 1205-U6-010.
l I
Pages 4-27 and 6-38
- Cold Shutdown Justification CS-38 was written to allow testing of valves HV-8508A and HV-8508B during cold shutdown.
l Pages 4-28 and 5-16
- The program was chacqed to indicate quarterly forward-flow-operability testing for valve 1208-U6-032 on the 1
tables on page 4-28 and in RR-16 on page 5-16.
This change was made to j
clarify the test requirements for this j
valve. Relief is not being requested
]
from forward-flow-operability testing.
q Pages 4-29 and 6-34
- Cold Shutdown Justification CS-34 was written to allow full-stroke testing of valves 1208-U4-284 and 1208-U4-299
)
during cold shutdown and partial-stroke testing during the quarterly pump tests.
Page 4-43
- The program was changed to indicate the
)
quarterly reverse-flow-closure testing of valves 1302-U4-113, 1302-U4-114, 1302-U4-115, and 1302-U4-116.
Cold shutdown Justification CS-32 discusses this testing.
Pages 4-44 and 6-33
- Cold Shutdown Justification CS-33 was written to allow testing of valves 1302-U4-125, 1302-U4-126, 1302-U4-127, and 1302-U4-128 to be performed on a cold shutdown frequency.
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