Makes use of mostly the fuzzy-gray system theory and method to evaluate the welding quality.This method deduces the necessary data, and enhances the evaluating precision, then saves the cost.

• 摘要利用模糊灰色系统理论和方法对有害气体压力容器的焊接质量进行可靠性评价，减少所需的原始数据，提高评价精度，节约人力和物力。