This WRC Bulletin concentrates on the major failure mechanisms observed in nuclear power plant piping during the past three decades and on corrective actions taken to minimize or eliminate such failures.These corrective actions are applicable to both replacement piping and the next generation of light-water reactors.This WRC Bulletin was written with the objective of meeting a need for piping criteria in Advanced Light-Water Reactors, but there is application well beyond the LWR industry.This Volume, in particular, is equally applicable to current nuclear power plants, fossil-fueled power plants, and chemical plants including petrochemical.Implementation of the recommendations for mitigation of specific problems should minimize severe failures or cracking and provide substantial economic benefit.