ML20037D206
| ML20037D206 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 05/14/1981 |
| From: | Tauber H DETROIT EDISON CO. |
| To: | Tedesco R Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0694, RTR-NUREG-0737, RTR-NUREG-694, RTR-NUREG-737, RTR-REGGD-01.068, RTR-REGGD-1.068, TASK-1.G.1, TASK-TM EF2---53-285, NUDOCS 8105220225 | |
| Download: ML20037D206 (5) | |
Text
.
e Harry Taube,
'; cc. Ves &
E g ^# ag and Cys'gc**C" Deholt
!= J*m=L (313) 237-8000 May 14, 1981 EF2 - 53,285
- 1.,l g
Mr. Robert L. Tedesco Y
-l Assistant Director for Licensing q
Division of Licensing
.6
.'IOY 2 1 Jggy,. N Office cf Nuclear Reactor Regulation LA =a U.
S.
Nuclear Regulatory Commission d
M /2 /
Washington, D. C.
20555 6-\\,
sj/
Dear Mr. Tedesco:
References:
1.
Enrico Fermi Atomic Power Plant, Unit 2 NRC Docket No. 50-341 2.
R.
L.
Tedesco letter to Dr. W.
H. Jens dated January 18, 1981 3.
D.
B. Waters letter to U.
S.
Nuclear Regulatory Commission, Att:
D.
G.
Eisenhut, dated January 31, 1981
Subject:
TMI Task Action Item I.G.1, Special Low i
Power Test Program for BWRs The following is submitted in response to your letter of l
l January 14, 1981 to W. H. Jens on the subject of Special Low Power Test Programs for BWRs.
This directive involves augmented testing and training beyond that done in the i
normal Startup Test Program.
Section H.I.G.1 in Appendix H to the Enrico Fermi 2 FSAR 1
(Amendment 33) describes in detail the supplemental train-ing to be provided Operations personnel du~:ing the Pre-It is the position operational and Startup Test Programs.
of Detroit Edison that this response satisfies the intent of NUREGs 0737 and 0694.
However, as requested in your letter, we commit to augment operator training by their 8105220 22 8
&II
Mr. Robert L.
Tedesco May 14, 1981 EF2 - 53,285 Page 2 participation in the preoperational and startup test programs in accordance with the guidelines provided by the BWR Owners Group (Reference 3).
The directive also proposes that we perform a simulated loss of AC power test to familiarize operators with plant response and determine plant limitations in a blackout.
This test falls outside the accepted design bases to an event of very low probability.
Furthermore, the amount of information to be gained from the performance of this test is not commensurate with the risk involved.
It is our position that the desired information can be obtained by the following special tests which we commit to perform:
1.
Startup of the RCIC system after_ loss-of AC power to the system (Appendix A-1).
2.
Operation of the RCIC. system with a loss of AC power to the system.
Start and operate the RCIC system with return to the condensate storage tank and run for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or until any system limiting parameter is approached (e.g. high RCIC area temperature, low battery voltage, or high suppression pool temperature).
(Appendix A-2.)
These tests (Appendix A) are part of the BWR Owners Group recommendations (Reference 3) in response to the require-ments of NUREG-0737, Item I.G.1.
It is our position that the performance of these tests is responsive to the intent of your letter and will provide additional information on plant response under conditions simulating a total loss of AC power.
It is the position of Detroit Edison that with the forth-coming update of FSAR Chapter 14 to include the latest test-ing recommendations from General Electric and the additional low power testing of RCIC (Appendix A), we meet the intent of augmented training and testing requirements of NUREG-0737 Item I.G.1.
'Mr. Robert L. Tedesco May 14, 1981 EF2 - 53,285 Page 3 l
It is our intent to proceed with the planning and execution of the augmented operator training and Special Test Programs.
based on the above commitments.- The detailed test procedures will be submitted at least 90 days prior to performing the special RCIC tests, and the results of the test program will be documented as required by Regulatory Guide 1.68.
Sincerely,-
cc:
L.
L. Kintner B. Little l
i I
i
_.-__ _ ~ _. - - _ _ _.., -. _ _ _,
s s
f APPENDIX A-1 TEST:
STARIUP OF THE BCIC SYSTDi AFTER IDSS OF AC POWER TO 7EE SYSTDi PURPOSE:
Verify the design basis ability of the system to start without the aid of AC power with the exception of the BCIC DC/AC inverters.
INITIAL CONDITICES:
Preoper:tional test has been performed on aCIC system.
o Syseu valves in normal standby lineup (suction from CST) e Note:
Flow to be directed back to the condensate storage tank.
Power to all RCIC ccaponents fed by site AC power shall e
be secured.
e Station batteries shall be fully charged.
Instrument air shall be available for operation and control e
of applicable valves.
Instruments shall be calibrated and setpoints, where applicable, e
shall be verified.
TEST DESCRIPTION:
Perform a manual initiation of the RCIC system utilizing the manual initiation switch and verify the proper operation of all components required for the RCIC startup transient to rated flow.
I Note: Manual manipulatico of some valves will be required.
ACCEPTANCE CRITERIA:
Proper operation of all components for the aCIC startup transient until rated flow is obtained.
l 1
.y 7-,---..
.-.w..
w-e, x-,,
_. -...-,--w,,---,.
.e--,-rrm.--,-
q,'
APPENDIX A-2
'IEST:
OPERATIN OF M RCIC SYSTEM WI'IH A IDSS OF AC POWER
'IO M SYSTEM PURPOSE:
To verify the operation of BCIC beyond its design basis to evaluate the limits of system operation with extended loss of AC Power to it and support systems, with the exception of the RCIC DC/AC inverters.
INITIAL CDIDITIWS:
Preoperational test has been performed on RCIC system.
o System valves in normal standby lineup (suction from CST).
e e Power to all RCIC conponent. fed by site AC power shall be secured, including RCIC area coolers and battery chargers supplying the station battery from which RCIC DC loads are powered.
e RCIC batteries shall be fully charged.
Instrument air shall be available for operation and control e
of applicable valves.
Instruments shall be calibrated and setpoints, d ere applicable, e
shall be verified.
l TEST DESCRIPTION:
Start and operate the RCIC system with return to the CST and run for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or until any system limiting parameter is approached (e.g., high RCIC area tenp, low battery voltage, or high suppression pool tenp) tripping and restarting the RCIC system two (2) additional times during this operating l
period.
ACCEPTANCE CRITERIA:
None.
l l
9 O
e,
.-,-...-------.m x-_--_ -, - _ -- _. --.-
. --..- m w
re_,,___. - - _
c-,,-s
_y,- - - -.,7.-,.-
y,
.-.--m,n
-,.m.,--,,-c
~,, - - - - - - -.., - - -