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SSINS No.: 6835 IN 83-72 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C. 20555 OCTOBER 28, 1983 Information Notice No. 83-72: ENVIRONMENTAL QUALIFICATION TESTING EXPERIENCE Addressees: All holders of a nuclear power reactor operating license (OL) or construction permit (CP). Purpose: This information notice is provided to inform the licensees of environmental qualification test failures. These test failures are based on (1) Construction Deficiency Reports and 10 CFR Part 21 Reports submitted to the NRC, and (2) results from the NRC-sponsored environmental qualification methodology research program. This information notice also serves to inform the licensees of findings that resulted from inspections conducted by the licensee or its agent of equipment that has been environmentally qualified and is being delivered or installed at the sites. Because of the potential safety significance and related generic implications of these test failures and inspection findings, addressees are expected to review the information for applicability to their facilities. No specific response to this information notice is required. Description of Circumstances: The NRC has received a number of Construction Deficiency Reports and 10 CFR Part 21 Reports from licensees and vendors of safety-related equipment. These reports describe a number of test failures and the circumstances under which the equipment failed to function during environmental qualification testing. These reports also indicate that there are a number of instances in which delivered equipment and components contained material that did not conform to standards for safety, thus rendering the qualified equipment and components unqualified. In addition to the monitoring and assessing of environmental qualification information received from the industry, the NRC has also sponsored a number of qualification tests of certain safety-related equipment under its environmental qualification methodology research program, which has resulted in a number of adverse test results. This information notice is published with the following objectives: 1. To disseminate the information on matters related to the environmental qualification of equipment and on test results, as received from the licensees and equipment vendors. . IN 83-72 October 28, 1983 Page 2 of 2 2. To disseminate the results of NRC-sponsored environmental qualification tests which have been completed. The enclosed continuing series of Equipment Environmental Qualification Notices (Attachment 1) describes the circumstances of each failure, failure mode, and qualification concerns as described in various reports and sources indicated. Please note that for items in Qualification Notices No. 14 through 19 the vendors have issued service instructions to the affected users regarding corrective action to be taken. Questions regarding the details of tests described in Attachment 1 should be directed either to the equipment manufacturer or the cognizant design/test agency. If you have other questions regarding this information notice, please contact the Regional Administrator of the appropriate NRC Regional Office, or this office. Edward L. Jordan Director Division of Emergency Preparedness and Engineering Response Office of Inspection and Enforcement Attachments: 1. Series of Equipment Environmental Qualification Notices 2. List of Recently Issued IE Information Notices Technical Contact: N. B. Le, IE (301) 492-9673 .
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