Technical Specifications

Technical Specifications (TS or Tech Specs or sometimes Improved Tech Specs) are typically contained in Appendix A of the facility operating license. It is written to provide a "what if" cause and effect chain for certain changes to the plant status. For example: If two ECCS are in-op then the plant must proceed to shut down immediately.

Related terms

• ITS - Improved Technical Specifications -> The site's use of the ISTS model. In contrast to Custom Technical Specifications (CTS).
• ISTS or STS - Improved Standard Technical Specification -> Refers to the NUREG model version
• CTS - Custom Technical Specifications -> refers to a site's technical specification before the ITS model is applied.

Standard Technical Specifications

The Standard Technical Specifications (STS) refers to the NRC approved template which nuclear plants can adopt based on plant design. A custom Tech Spec means that a plant hasn't adopted a standard tech spec. The term Improved Technical Specifications is a synonym for STS when its adopted to a site's use.

• Babcock and Wilcox Plants, Rev. 4 STS (NUREG-1430), Vol. 1, Specifications Vol. 1
• Babcock and Wilcox Plants, Rev. 4 STS (NUREG-1430), Vol. 2, Bases Vol. 2
• Westinghouse Plants, Rev. 4 STS (NUREG-1431), Vol. 1, Specifications Vol. 1
• Westinghouse Plants, Rev. 4 STS (NUREG-1431), Vol. 2, Bases Vol. 2
• Combustion Engineering Plants, Rev. 4 STS (NUREG-1432), Vol. 1, Specifications Vol. 1
• Combustion Engineering Plants, Rev. 4 STS (NUREG-1432), Vol. 2, Bases Vol. 2
• General Electric Plants, BWR/4, Rev. 4 STS (NUREG-1433), Vol. 1, Specifications Vol. 1
• General Electric Plants, BWR/4, Rev. 4 STS (NUREG-1433), Vol. 2, Bases Vol. 2
• General Electric Plants, BWR/6, Rev. 4 STS (NUREG-1434), Vol. 1, Specifications Vol. 1
• General Electric Plants, BWR/6, Rev. 4 STS (NUREG-1434), Vol. 2, Bases Vol. 2
• Westinghouse Advanced Passive 1000 (AP1000) Plants, Rev. 0 STS (NUREG-2194), Vol. 1, Specifications Vol. 1
• Westinghouse Advanced Passive 1000 (AP1000) Plants, Rev. 0 STS (NUREG-2194), Vol. 2, Bases Vol. 2