With the rapid development of nuclear power industry in china

it is imperative to make nuclear power technology and equipment independence

it is necessary to design and manufacture nuclear power equipment independently. For CPR1000

on the basis of the original foreign design

though the introduction

digestion

absorption of domestic design units

the process optimization of domestic manufacturing plants

the experimental development of domestic material suppliers

boron injection tank self-design and independent manufacturing have been realized. In this article

analyzing the chemical component and mechanical property of 20 MnHR of domestic material for boron injection tank and experimenting the property of welding

actualize welding procedure qualification under welding property analyzing

thus the qualified welding procedure specification can be worked out to carry out welding

which can be used in the manufacture of boron injection tank in nuclear station

the welding of domestic material 20 MnHR for boron injection tank can be completed and the independence and localization of boron injection tank can be realized.