ML20072D238
| ML20072D238 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 06/20/1983 |
| From: | Dixon O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8306230086 | |
| Download: ML20072D238 (2) | |
Text
'*
SOUTH CAROLINA ELECTRIC & GAS COMPANY
,ost oprics 7e4 COLUMSIA. SOUTH CAROUNA 29218
- o. W. OtxON. JR, WCE PmessoaNT June 20, 1983 uvet... O 47.ou.
Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Ragulatory Coannission Washington, D.C.
205S5 Sobject:
Vi rgil C. Summer Nuclear Station Docket tio. 50/395 Goerating License No. NPF-12 Puase 3II Tetiting
Dear Mr. Centon:
South Carolin1 Electric and GaE CoNyany (SCE0G) is currently perforcing Phace III testing 1.3 descrioed in Chapter 14 of the Virgil C. Summer Nuclear Ste. tion Pl nal Gafety Analysis Report (FSAR).
It has opue to cur attention that a ootential discrepancy exista in conducting t.ic '2), c2 the Phage III tests, a 10% load swing and a 50% load rejection, and Ltcense Condition.2.C( 22),
License Conditica 2.Cl22) states: "Pcr cuerations above 904 of full power, SCE&G nhall acat rol the reactor manually or the roos shall be out greater than 21S steps until written approval is received from the NaC Staff authorizing removal of this restriction."
License Condition 2.C(4) requires performance of start-up tests as discussed in Chapter 14 of the FSAR.
The 10% load l
swing test is a required test as described in Chapter 14, l
Table 14.1-73 of the Virgil C. Summer Nuclear Station FSAR.
The purpose of this test is to observe the Nuclear Steam Supply System (NSSS) transient response and the integrated performance of automatic control systems.
This test requires the control rods to be in automatic with the reactor at
(
approximately 100% of rated thermal power.
The introduction of a.10% load rejection when the reactor is operating at 100%
of rated thermal power with the control rods in automatic, will cause the control rods to automatically step in below 215 steps to follow the load.
The 50% load' rejection test, an approved Phase III test, is part of the Westinghouse start-up test program to verify design and meet contractural obligations.
The purpose of this test is to demonstrate the ability of the NSSS, automatic reactor control systems and secondary plant to sustain a rapid reduction of approximately 50% in electrical output.
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PDR ADOCK 05000395 I
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J Mr.-Harold R.
Denton June 20, 1983 Page #2 This test requires the control rods to be in automatic with the reactor at approximately 100% of rated thermal power.
The introduction of a 50% load rejection, when the reactor is operating at.300% of rated thermal power with the control rods in automatic, will cause the control rods to automatically
. step in below 215 steps to foi, low the load.
The above tests are transient conditions initiated by BCE&G to meet ccmmitments and complete the ::hase III test program.
It is our position that Licer.se Conditicri 2.C(22) in interded for norms.1 plant operations and that the load swing / load rejection testa sa such do not violate the intent of the Licease Condition.
Therefore, we request Staf f wri.tten co*.-currence in our interpretation of this condition.
Yo9r expeditives review of this matter is appreciated.
If you have any questions, please contact us.
Ver tral
- yoara,
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d O. W. 9xon, WRM:NEC:OWD/fjc cc:
V. C.
Summer T.
C.
Nichols, Jr./O. W. Dixon, Jr.
E.
H.
Crews, Jr.
E.
C.
Roberts H. N.
Cyrus J. P. O'Reilly Group / General Managers
.O.
S.
Bradham R. B.
Clary C.
A.
Price A.
R. Koon C.
L. Ligon (NGRC)
G. J. Braddics J. C. Miller J. L.
Skolds J.
B.
Knotts, Jr.
NPCF File (Lic./Eng.)
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