PNNL

Abstract

This paper reviews the current status of predictive models and supporting data for estimating distributions of flaws in multi-pass welds. A proposed approach is then described to address and remove limitations in present methods now used for estimating flaw sizes and densities for welds including those made to nuclear standards. It is proposed to utilize an existing RR-PRODIGAL computer-based model and to improve its applicability for predicting the construction integrity of welds. The proposed effort would bring together experts from government and industry, compile data from US and internationl sources and develop improved models for predicting weld integrity.