ML19261F074
| ML19261F074 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/19/1972 |
| From: | Knuth D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7910180687 | |
| Download: ML19261F074 (3) | |
Text
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- 1. C. DeYeung, Assistant Director for N1's, L RESFWSE TO REVIEW FLAB ASSIGGGET - 1 Tert MILE ISIAle NUCLEAR STATIW, UMIT 1, EEVIEN OF F0151 ASCEESIW TESTIEC FROCIAM As requested informally work has been completed on the functional revies identified in the bleek that follaars. Der comelusinas ses cantained in the attached report.
Ortginal Signed by Donald F. Knuth r
Donald F. Enuth, Assietant Director for Beector Safety Directorate of Licensing Emelesers:
As stated Flaat Name Three Mila Island-1 Licensing Stage:
W.
Becket No.:
50-289 Branch and Project Leader Esquesting Assistance:
FUK-2, 5. E. Schierling asquested Completion Date:
None Descriptime of Beviser Oeisnian of three taats in the Power Ascemaion Tasting Fregram Beview Statao:
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THREE MILE ISL\\ND NUCLEAR STATION, UNIT 1 POWER ASCENSION TESTING PROGRAM In a letter to Metropolitan Edison Company dated August 8,1972 we listed seven tests that were not included in the proposed Power Ascension resting Program. In a reply dated August 22, 1972, the applicant agreed to perform four of the seven tests. These tests were included in Amendment 28 to the FSAR (page 13 -13).
The applicant apparently declined to perform the three remaining tests.
Each is discussed below.
1.
Generator Trip cest - The applicant states that the test will be similar to che Turbine Trip test.
Experience at Point Beach and at San Onofre showed that turbine overspeed problems were only evident when the generator was tripped at 100% load. We conclude that a Generator Trip test should be performed at a reactor power level of 100%.
2.
Effluents and Effluent Monitoring Systems test - The applicant states that the definition and scope of testing in this area have not yet been clearly defined. We believe that systems tests are required to 1) verify total system performance, 2) verify the calibration of system components by comparison with grab samples, and 3) provide base data as references for subsequent operation.
Also, it is important to monitor the pcrformance of the core during initial startup, and to determine if any anomalies exist at power levels up to 1007..
A calibrated system is necessary to provide accarate and meaningful data. We conclude that the Effluents I
~'.
. and Effluent Monitoring Systems tests should be performed
- 1) as early as possible in tha power ascension program, and
- 2) at power levels of 15%, 407., 76%, 927., and 100%.
3.
Shutdown from outside the Control Room test - The applicant states that 1) a fire detection and protection system will insure habitability of the control room, 2) the controls outside the control room will be proven during pre-operational testing, and
- 3) separability of control components insures the availability of redundant control for shutdown in the event of fire damage.
Such a test is necessary to confirm that General Design Criterion No. 19 has been met by demonstrating the ability of the installed equipment and th. operating crew to bring the plant from steady state operation to the hot shutdown condition and to monitor system responses. We conclude that the Shutdown from Outside the Control Room test should be performed, at any power level above 10%. Certainly, it would be prudent to have communications between the control room and the remote control station, and have operators standing by at manual controls ready to take immediate action, if necessary, to prevent any undesirable systen responses.
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