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Containment structure

A gas-tight shell or other enclosure around a nuclear reactor to confine fission products that otherwise might be released to the atmosphere in the event of an accident. Such enclosures are usually dome-shaped and made of steel-reinforced concrete.

Containment building

The air-tight building, which houses a nuclear reactor and its pressurizer, reactor coolant pumps, steam generator, and other equipment or piping that might otherwise release fission products to the atmosphere in the event of an accident. Such buildings are usually made of st...

Containment Access Location

Function of the Containment Sump

The containment sump (also known as emergency or recirculation sump) is part of the ECCS. Every nuclear power plant is required by regulations (i.e., 10 CFR 50.46) to have an ECCS to mitigate a design basis accident. The emergency core cooling system is one of several safety s...

Risk-Informed Assessment of Degraded Containment Vessels (NUREG/CR-6920)

On this page:Publication InformationAbstractDownload complete documentNUREG/CR-6920 (PDF - 46.3 MB)Publication InformationManuscript Completed: June 2006 Date Published: November 2006Prepared by: B.W. Spencer, J.P. Petti, D.M. KunsmanSandia National Laboratories Operated by Sa...

Bulletin 73-02: Malfunction of Containment Purge Supply Valve Switch

IEB 73-02 UNITED STATES ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION II - SUI...

Bulletin 82-04: Deficiencies in Primary Containment Electrical Penetration Assemblies

SSINS No.: 6820 OMB No.: 3150-0094 Expiration Date: 11/30/85 ...

Information Notice No. 83-23: Inoperable Containment Atmosphere Sensing Systems

SSINS No.: 6835 IN 83-23 UNITED STATES NUCLEAR REGULATORY COMMISSION OFF...

Bulletin 78-11: Examination of Mark-1 Containment Torus Welds

UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D. C. 20555 ...

Bulletin 80-08: Examination of Containment Liner Penetration Welds

SSINS No.: 6820 Accessions No.: 7912190650 UNITED STATES ...

Mark I Containment Long-Term Program (Generic Letter 80-78)

GL80078 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 AUGUST 20 1980 Docket No. 50-293 Mr. G. Carl Andognini Boston Ediso...

Information Notice No. 90-02: Potential Degradation of Secondary Containment

UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON, D.C. 20555 January 22, 1990 Informati...

Bulletin 77-06 – Potential Problems with Containment Electrical Penetration Assemblies

NUCLEAR REGULATORY COMMISSION OFFICE FOR INSPECTION AND ENFORCEMENT WASHINGTON, D.C. 20555 November 22, 1977 ...

Information Notice No. 85-71: Containment Integrated Leak Rate Tests

SSINS No.: 6835 IN 85-71 UNITED STATES NUCLEAR REGULATORY COMMISSION ...

Information Notice No. 83-53: Primary Containment Isolation Valve Discrepancies

SSINS No.: 6835 IN 83-53 UNITED STATES NUCLEAR REGULATORY COMMISSION OFF...

Information Notice No. 92-36: Intersystem LOCA Outside Containment

UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON, D.C. 20555 May 7, 1992 NRC INFORM...

Information Notice No. 79-26, Breach of Containment Integrity

IN79026 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 November 1, 1979 MEMORANDUM FOR: ...

Pretest Analysis of a 1:4-Scale Prestressed Concrete Containment Vessel Model (NUREG/CR-6685)

On this page:Publication InformationAbstractDownload complete documentNUREG/CR-6685 (PDF - 23.83 MB)Publication InformationManuscript Completed: August 2000Date Published: October 2000Prepared by: R- A. Dameron,* L. Zhang,* Y. R. Rashid,* M. S. Vargas*Sandia National Laborator...

Information Notice No. 84-39: Inadvertent Isolation of Containment Spray Systems

SSINS No.: 6835 IN 84-39 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF...

Information Notice No. 88-29:Deficiencies in Primary Containment Low-Voltage Electrical Penetration

UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON, DC 20555 May 24, 1988 In...

Assurance of Equipment Operability and Containment Integrity During Design-Basis Accident Conditions

UNITED STATES NUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR REACTOR REGULATIONWASHINGTON, D.C. 20555-0001September 30, 1996NRC GENERIC LETTER 96-06:ASSURANCE OF EQUIPMENT OPERABILITY AND CONTAINMENT INTEGRITY DURING DESIGN-BASIS ACCIDENT CONDITIONSAddresseesAll holders of ope...