# Fracture Toughness Requirements for Light Water Reactor Pressure Vessels
> **Nuclear Regulatory Commission** · Final rule. · Published 1995-12-19 · Effective 1996-01-18 · 60 FR 65456
## Document
- **Document number:** 95-30665
- **Category:** other
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 60 FR 65456
- **CFR reference:** 10 CFR 50
- **Publication date:** 1995-12-19
- **Effective date:** 1996-01-18
## Abstract

The Nuclear Regulatory Commission (NRC) is amending its regulations for light-water-cooled nuclear power plants to clarify several items related to the fracture toughness requirements for reactor pressure vessels (RPV). The amendments will clarify the pressurized thermal shock (PTS) requirements, make changes to the Fracture Toughness Requirements and the Reactor Vessel Material Surveillance Program Requirements, and provide new requirements for thermal annealing of a reactor pressure vessel.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1995/12/19/95-30665/fracture-toughness-requirements-for-light-water-reactor-pressure-vessels)
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