ML19350A047
| ML19350A047 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 11/14/1980 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Aswell D LOUISIANA POWER & LIGHT CO. |
| References | |
| NUDOCS 8012010058 | |
| Download: ML19350A047 (3) | |
Text
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UNITED STATES j
NUCLEAR REGULATORY COMMISSION
,t WASHINGTON, D. C. 20555
Dear Mr. Aswell:
SUBJECT:
CLARIFICATION OF TMI-RELATED REQUIREMENTS FOR NEW OPERATING LICENSES REQUIREMENT FOR TRAINING DURING LOW POWER TESTING The first special low power test program was developed by TVA, approved by the staff, and completed at the Sequoyah Nuclear Power Station. However, it was not the intention of NRC to obligate all succeeding applicants to the Sequoyah program. The purpose of this letter is to indicate our minimum requirements for an acceptable program of training during low power testing for PWRs which will provide the basis for future test programs.
With respe t to the subject THI-related requirements. NUREG-0694 issued in June 1980, stated that applicants for new operating licenses will:
Define and commit to a special low-power testing program approved by NRC to be conducted at power levels no greater than 5 percent for the purposes of providing meaningful technical information beyond that obtained in the normal startup test program and to provide supplemental training (Part 1, Paragraph I.G.1);
Obtain nuclear steam supply system (NSSS) vendor review of low power testing procedures to further verify their adequacy. This requirement must be met before fuel loading (Part 1, Paragraph I.C.7); and Supplement operator training by completing the special low power test I
program. Tests may be observed by other shifts or repeated on other shifts to provide training to the operators. This requirement shall be met before issuance of a full-power license (Part 2, Paragraph I.G.1).
The above requirements are incorporated in Enclosure 2 to NUREG-0737, issued October 31, 1980, as " Requirements Issued 6/26/80."
NUREG-0694 also stated that for "later operating licene applicants" (those subsequent to the 'NT0LS') "the staff intends to conduct one operating license 4
801201005?
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I D. L. Aswell,
review by combining the fuel-loading and full-power testing reqeirements into a single set of operating license requirements." Our safety evaluation report on your facility will include our complete evaluation of the special low power test program including details of the supplemental operator training you commit to perfom.
Your program, as submitted for our review, should provide for the following:
Each licensed reactor operator (R0 or SRO who perfoms R0 or SR0 duties, respectively) should experience the initiation, maintenance and recovery from natural circulation mode, using nuclear heat to simulate decay heat.
Operators should be able to recognize when natural circulation has stabilized, and should be able to control saturation margin, RCS pressure, and heat removal rate without exceeding specified operating limits.
These tests should demonstrate the following plant characteristics:
length of time required to stabilize natural circulation, core flow distribution, ability to establish and maintain natural circulation with or without onsite and off site power, and the ability to uniformly borate and cool down to hot shutdown conditions using natural circulation. The latter demonstration may be performed using decay heat following power ascension and vendor acceptance tests, and need only be perfomed at those plants for which the test has not been demonstrated at a comparable prototype plant.
Our approval of your program will be subject to conformance with the above requirements and th following criteria:
The tests shoulu not pose an undue risk to the public.
The risk of equipment damage must be low.
The format for your procedures should be e.onsistent with Regulatory Guide 1.68.
The procedures and your safety evaluation for your program should be submitted to ISE and NRR at least four weeks prior to the date of performing the tests.
The results of the special low power tests should be documented as part of the "Startup Test Report" (see Regulatory Guide 1.16).
Sincerely, W
Robert L. Tedesco, Assistant Director for Licensing Division of Licensing
l Mr. D. L. Aswell
.Vice President, Pcwer Production Louisiana Power & Light Company 142 Delaronde Street New Orleans, Louisiana 70174 cc:
W. Malcolm Stevenson, Esq.
Monrce & Lemann 1424 Whitney Building New Orleans, Louisiana 70130 Mr. E. Blake Shaw, Pittman, Potts and Trowbridge 1800 M Street, N. W.
Washington, D. C.
20036 Mr. D. B. Lester Production Engineer Louisiana Power & Light Company 142 Delaronde Street New Orleans, Louisiana 70174 Lyman L. Jones, Jr., Esq.
Gillespie & Jones 910 Security Homestead Build'ng 4900 Veterans Memorial BoulevarJ Metairie, Louisiana 70002 Luke Fontana, Esq.
Gillespie & Jones l
824 Esplanade Avenue New Orleans, Louisiana 70116 Stephen M. Irving, Esq.
One American Place, Suite 1601 Baton Rouge, Louisiana 70825 Resiaent Inspector /Waterford NPS P. O. Box 822 Killona, Louisiana 70666