ML20071F084
| ML20071F084 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 03/09/1983 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.1, TASK-2.K.3.30, TASK-TM 916, TAC-48593, NUDOCS 8303150432 | |
| Download: ML20071F084 (2) | |
Text
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TOLEDO Docket No. 50-346-License No. NPF-3
$Cm Serial No. 916
"'S' 25S-522' March 9, 1983 Director of Nuclear Reactor Regulation Attention:
Mr. John F. Stolz Operating Reactor Branch No. 4 Division of Operating Reactors United States Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Stolz:
This is in response to Mr. D. G. Eisenhut letter of February 22, 1983 (Log No. 1228) concerning Exemption Request - Vessel Head Vent. Toledo Edison was requested to provide additional information for consideration of an exemption extending the implementation deadline for 10CFR50.44(c)(3)(iii).
The following is our response to the requested information for Davis-Besse Nuclear Power Station Unit 1.
REQUEST 1.
A commitment to perform the necessary integral system testing which demonstrates the ef ficacy of your proposed method of noncondensable gas removal from the reactor vessel head.
RESPONSE
1.
A integral system test to demonstrate the removal of noncondensable gases has been included in the test matrix which will be conducted in the B&W, Alliance test facility. Toledo Edison is committed to endorse this test program. The test program was formulated as an overall B&W Owner's Group effort in response to TMI action plan NUREG-0737, Item II.K.3.30.
REQUEST 2.
A realistic schedule for the submittal of your evaluation of the test results which will verify analytical methods and operating procedures described herein.
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THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO OHIO 43652 8303150432 830309 PDR ADOCK 05000346 p
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Dsckst Ns. 50-346 Licznst N3. NPF-3 Serial No. 916 March 9, 1983 Page 2
RESPONSE
2.
Within 6 months after the integral system test is performed, Toledo Edison will submit.a report providing evaluation of test results to verify analytical methods and operating procedures.
REQUEST 3.
A commitment that, prior to startup from the next scheduled refueling, the hot leg vents will have been installed and declared operable, procedures will be in place and operators will have been trained for using the high point vents to vent noncondensable gas trapped in the reactor vessel.
RESPONSE
3.
Toledo Edison has completed the installation of the hot leg vents in the 1982 refueling outage. Per NUREG-0737 Item II.B.1, Staff approval is required before the operating procedure can be implemented. The operating procedure for Davis-Besse Unit 1 on hot leg vents is included as part of the B&W Abnormal Transient Operating Guideline (ATOG) procedure which is currently under staff review. We will implement the operation procedure for the hot leg vent, including training of operators, within 6 months after the ATOG procedure is approved.
REQUEST 4.
Your Safety Analysis regarding the interim use of the above procedures for a period of time needed to conduct and evaluate the necessary integral testing program results, but not less than four years.
RESPONSE
4.
The operating procedure in ATOG for hot leg vent will be regarded as an interim procedure until results from integral system test are evaluated.
By that time. (less than 4 years) the procedure shall be finalized.
Very truly yours,
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RPC:FYC cc:
NRC DB-1 Resident Inspector bt a/6
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