ML20078A923
| ML20078A923 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 08/30/1983 |
| From: | Warembourg D PUBLIC SERVICE CO. OF COLORADO |
| To: | Wagner P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| FRN-50FR27508 P-83294, NUDOCS 8309230463 | |
| Download: ML20078A923 (10) | |
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16805 WCR 19 1/2, Platteville, Colorado 80651 August 30, 1983 Fort St. Vrain Unit #1 P-83294
- R@ RMRm Mr. Phil Wagner, Project Manager U. S. Nuclear Regulatory Commission SEP - 6123 Region IV 611 Ryan Plaza Dr., Suite 1000 y
Arlington, TX 76011
SUBJECT:
Fort St. Vrain Unit No. 1 B-0 Start-Up Tests
Dear Mr. Wagner:
With the completion of the fluctuation test program (RT-500K), and the NRC's release from 70*4 power restrictions, we are now making preparations to complete the B-0 Start-Up Test program to 100's power.
We have evaluated the program completed to date, and we have concluded that the test program has been completed through Sequence 70 with a good portion of the steady state testing for Sequences 71 through 79 having also been completed.
The major areas in which testing remains to be completed are as follows:
Sequence 72 Reactor Power Rise to and Test (Includes 73 & 74) at 100% Power l
Sequence 75 Xenon Stability Test at 100% Power l
Sequence 76 Automatic Load change from 100%
(Includes 77 & 78)
Reactor Power to 30% and Return to 100%
l Sequence 79 Turbine Generator Load Shedding l
(Includes 80) from and Recovery to 100% Power i
As indicated in the attached tabulation a good portion of the above listed tests were completed during the fluctuation test program in our rise to 100% power in September, October and November 1982.
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8309230463 830830 PDR ADOCK 05000267 lll P
PDR t
. With the
.exceptionof Sequence 75, Xenon Stability Tests and Sequence 79, Turbine Load Rejection we plan to complete the B-0 start-up testing in this fuel cycle as follows:
1.
Beginning immadiately, increase reactor power in ~ 5%
increments from 70% to 85% power.
Complete all steady state testing to 85% power.
2.
Remain at or about 85% for most of the remainder of this fuel cycle.
3.
Toward the end of this fuel cycle increase power from 85%
to 100% an~d complete all steady state testing.
4.
At the end of the fuel cycle complete Sequences 76, 77 and 78 involving automatic load swings of the unit.
With reference to the Xenon Stability Tests, the original test was written on the basis of introducing perturbations from equilibrium conditions by control re movements to indicate the absence of any sustained Xenon oscillations. The test was written, of course, on the basis of the initial core loading. With continued operation over the years we now find that we cannot conduct the test without deviating from the approved control rod withdrawal sequence which will require Technical Specification changes.
Given the analyses that must be made and the time required to effect necessary changes we will not be able to conduct the Xenon stability tests during this fuel cycle.
We will continue to evaluate this portion of the test program with the objective of trying to complete the Xenon stability tests during the next fuel cycle.
With reference to load rejection from full power (Sequences 79 and
- 80) we do not believe this test is in the best interest of Fort Saint Vrain.
Although not conducted as a part of the B-0 test program, we did successfully demonstrate a load rejection from 100% power on November 9, 1981.
The transient November 9, 1981 was initiated by a circulator trip at 100% power followed by the trip of a second circulator, loop isolation and a turbine run back.
This transient more than adequately demonstrated the plant response and in our opinion represented a more severe transient than that imposed by Sequences 79 and 80. We believe that any further testing along these lines is not justifiable in terms of the health and safety of the public and is certainly not justifiable in terms of purposely taking the plant through such a transient. We believe that over the years of operation of Fort Saint Vrain we have more than adequately demonstrated the transient response of the plant to an extent far in excess of that required by the B-0 Test program.
It is requested, therefore, that sequences 79 and 80 be eliminated from the B-0 start-up test program.
t
. With reference to the overall B-0 start-up program we recognize that certain conditions such as the last stage of. the turbine being removed and feedwater heater #5 out of service will have some effect on the secondary side of the plant. We believe these conditions can be accommodated within the test data evaluation process and most certainly can be confirmed sometime in the future.
Unless we hear from you to the contrary we are proceeding as outlined above. We would specifically request your concurrence with delaying the Xenon stability tests and waiving the full load rejection tests.
Very truly yours, m 7[stexh Don W. Warembourg v
Manager, Nuclear Production Fort St. Vrain Nuclear Generating Station DWW/dje Attachment
4 t-P-83294 Status B-0 Start-Up Test Program
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f LEGEND
'SUT B-1 Steam Syst'em Performance SVT B-2 Primary Coolant Chemical Impurity Analyses J
SUT'B-3 P.C.R.V. Performance SVT B-4 Primary System Performance SUT B-5 Plant Instrumentation Performance SUT B-6 Plant Transient Performance SVT B-7 Plant Automatic Control System Performance SUT.B-8' Reactivity Coefficient Measurements SUT B-9 Differential Control Rod Worth Measurements SUT B-10 Xenon Build-Up and Decay Measurements SUT B-11 Xenon Stability SUT B-12 Shielding Survey i
SUT B-13 Radio Chemistry. Analysis, Primary Coolant
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. B-0, Sequence 71, Return from 70% Power to 80% Power SUT STATUS REMARKS SVT B-2, Part 1 Complete Some Additional Data Required SUT B-2, Part 2 Complete Some Additional Data Required SVT B-2, Part 3 Complete SUT B-3, Part IR Complete SVT B-3, Part IS Complete SUT B-3, Part 2R Complete Some Additional Data Required SUT B-3, Part 3A Complete Some Additional Data Required
, B-0, Sequence 72, Reactor Power Rise to 100%
SUT STATUS REMARKS SUT B-2, Part 1 Complete Some Additional Data Desirable SUT B-2, Part 2 Complete Some Additional Data Desirable SVT B-2, Part 3 Complete SUT B-3, Part 1R Complete SUT B-3, Part IS
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Complete SUT B-3, Part 2R Complete SUT B-3, Part 3A Complete SUT B-8, Part 19 Not Complete SVT B-1, Part IP Complete SUT B-1, Part SE Not Complete SUT B-1, Part 6I Complete SUT.B-3, Part 1Q Complete Some Additional Data Required SUT B-3, Part 2Q Complete SUT B-3, Part 38-Complete SVT B-4, Part 10 Not Complete SVT B-4, Part 3C Not Complete i.
SUT B-5, Part IM Not Complete SVT B-5, Part 2B Complete SUT B-5, Part 3H Not Complete Some Additional Data Required SUT B-7,'Part 2D Not Complete
-SUT B-7, Part 3D Not Complete
. SUT STATUS REMARKS SVT B-7, Part 70-Not Complete SVT B-7, Part'80 Not Complete
-SUT B-7, Part 10D Not Complete SUT B-7, Part 14F Not Complete SUT B-7, Part 15F Not Complete SUT B-7, Part 16E Not Complete SUT B-7, Part 17D Not Complete
'SUT B-7, Part 18C Not Complete SUT B-7, Part 19E Not Complete SUT B-9,'Part 25 Not Complete SUT B-10,.Part 4
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'SUT B-12, Part 2 Not Complete LSUT B-13,.Part 10-Not Complete SUT B-13, Part 2D Not Complete e
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'B-0, Sequence 75, Xenon Stability SUT STATUS REMARKS SUT B-2,.Part 1 Complete Some Additional Data Required SUT B-2, Part 2' Complete Some Additional Data Required SUT B-2, Part 3 Complete 4
SVT B-3; Part IR Complete SUT B-3, Part IS Complete SUT B-3, Part 2R Coniplete Some Additional Data Required SVT B-3, Part 3A Complete SUT B-9, Part 26 Not Complete SUT B-11 Not Complete 4
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. B-0, Sequence 76, Automatic Load Change 100*4-30*4-100*4 Power SUT STATUS REMARKS SVT B-1, Part 2G Not Complete SUT B-2, Part 1 Complete Some Additional Data Required SVT B-2, Part 2 Complete Some Additional Data Required SUT B-2, Part 3 Complete SVT B-3, Part 1R Complete SVT B-3, Part IS Complete SUT B-3, Part 2R Complete Some Additional Data Required SUT B-3, Part 3A Complete SVT B-5, Part IN Not Complete SVT B-5, Part 3I Complete Some Additional Data Required SUT B-7, Part 20H Not Complete SVT B-8, Part 20 Not Complete SVT B-9, Part 27 Not Complete SUT B-10, Part 5 Not Complete SUT B-13, Part IP Not Complete SVT B-13, Part 2E Not Complete SUT B-1, Part 2H Not Complete SUT B-1, Part 20I Not Complete SVT B-8, Part 21 Not Complete
. B-0, Sequence 79, Turbine Generator Load Shedding SUT STATUS REMARKS SVT B-0, Part 2I Not Complete SUT B-1, Part 7E Not Complete SUT B-2, Part 1 Complete Some Additional Data Required SVT B-2, Part 2 Complete Some Additional Data Required SVT B-2, Part 3 Complete SVT B-3, Part IR Complete SUT B-3, Part IS Complete SVT B-3, Part 2R Complete Some Additional Data Required SUT B-3, Part 3A Complete SUT B-6, Part 9 Not Complete
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