NUREG-0744, Notice of Issuance & Availability of NUREG-0744, Resolution of Reactor Vessel Matls Toughness Safety Issue. Final Rept Will Provide Resoultion of Unresolved Safety Issue A-11
| ML20011B087 | |
| Person / Time | |
|---|---|
| Issue date: | 09/11/1981 |
| From: | Schroeder F Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20011B086 | List: |
| References | |
| REF-GTECI-A-11, REF-GTECI-RV, RTR-NUREG-0744, RTR-NUREG-744, TASK-A-11, TASK-OR NUDOCS 8111040643 | |
| Download: ML20011B087 (2) | |
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' 7590-01 U. S. NUCLEAR REGULATORY COMMISSION NUREG-07M N0TICE OF I."'
J AND AVAILABILITY
" RESOLUTION OF THE REI vR VESSEL MATERIALS TOUGHNESS SAFETY ISSUE" The U. S. Nuclear Regulatory Comis,sion (NRC) staff has prepared for public comment a report entitled, "Re' solution of the Reactor Vest,el Materials Toughness Safety Issue," (NUREG-0744) dated September 1981.
This report, when issued in its " Final" fonn, will provide the staff's resolution of the NRC's Task A-11, " Reactor Vessel Materials Toughness."
This issue was identified as an " Unresolved Safety Issue" in the 1978 Annual Report, pursuant to Section 210 of the Energy Reorganization Act of 1974.
The central problem of Unresolved Safety Issue A-11 was to provide guidance to performing analyses for reactor pressure vessels (RPVs) which fail to meet the toughness requirements during service life as a result of neutron radiation embrittlement. A technical team of recognized experts was organized to assist the NRC staff in addressing the problem.
Using the foundation of the tearing modulus concept, which had been developed under earlier NRC sponsorship, relationships were obtained which provided approximate solutions to the RPV fracture problem with assumed beltline region flaws. Volume I of this report is a brief presentation of the problem and the results; Volume II provides the detailed technical foundations.
Public coments are being solicited from interested organizatioas, groups and individuals. The staff will evaluate the coments received, and where applicable, incorporate them into the " Final" NUREG report.
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Copies of the "For Conrnent" report will be available after Seotember 1981. Copies will be sent directly to utilities, utility industry groups and assoefations and environmental and public interest groups.
Other copies will be available for review at the NRC Public Document Room,1717 H Street, NW, Washington, D. C.; and the Comission's Local Public Document Rooms located in the vicinity of nuclear power olants.
Addresses of these Local Public Document Rooms can be obtained from the Chief, Local Public Document Room Branch,. U. S. Nuclear Regulatory Comission, Washington, D. C.
20555, t'elephone (301) 492-7536.
Comments should be forwarded to Dr. Richard E. Johnson, Division of Safety Technology, U. S. Nuclear Regulatory Commission, Washington, D. C. 20555, by
, 1981.
Dated at Bethesda, Maryland, this lith day of September,1981.
FOR THE NUCLEAR REGULATORY COMMISSION Frank Schroe
, Acting Di Mr Division of Safety Technology Office of Nuclear Reactor Regulation
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