GB/T 31213.1-2014Non-destructive testing—Testing of cast iron equipments and components—Part 1: Test method for ultrasonic (English PDF)

Foreword

GB/T 31213 "cast member NDT detection" is divided into three parts.

--- Part 1. ultrasonic testing method;

--- Part 2. Acoustic ultrasonic testing methods;

--- Part 3. Acoustic emission testing methods.

This section GB/T Part of 131,213.

This section drafted in accordance with GB/T 1.1-2009 given rules.

This part of the National NDT Standardization Technical Committee (SAC/TC56) made and centralized.

This section drafted by. China Special Equipment Inspection and Research Institute, Germany Shuo (Beijing) Technology Co., Ltd., Hangzhou Special Equipment Inspection Institute, Paul Set Special Equipment Supervision and Inspection Institute, Henan Academy of boiler and pressure vessel safety inspection, Shandong Ruixiang Mould Co., Ltd., Beijing Huaxing sound Technology Limited.

1 Scope

GB/T 31213 provisions of this part of the ultrasonic testing method cast member.

This section applies to a thickness of 10mm ~ 500mm cast members (including cast iron dryer, iron piping components, cast iron valves, cast iron knot ) Manufacturing process of casting defects member, such as testing, ductile iron ball level detection member and a thickness of 10mm ~ 50mm with cast Defect detection of iron member.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 9441 ductile iron metallography

GB/T 9445 NDT personnel qualification and certification

GB/T 12604.1 Terminology for nondestructive testing Ultrasonic testing

GB/T 19799.1 NDT ultrasonic testing calibration block No. 1

GB/T 19799.2 NDT ultrasonic testing calibration block No. 2

GB/T 20737 Non-destructive testing - General terms and definitions

GB/T 23905 NDT ultrasonic testing with test block

3 Terms and Definitions

Terms and definitions GB/T 12604.1 and GB/T 20737 apply to this document defined.

4 Safety requirements

This chapter does not list all of the safety requirements for testing, the use of this part of the user security guidelines should be established prior to detection. Detection process safety requirements include at least.

a) inspectors shall comply with the safety requirements be subject member site, wear protective clothing and related anti-wear according to the requirements of the detection site Protective equipment;

b) if required, the use of electronic equipment should have explosion-proof function;

c) when operating in an enclosed space, it should consider the appropriate oxygen content and other factors, and to take the necessary protective measures;

d) when operating at high altitude, you should consider personnel, testing equipment, components fall and other factors, and to take the necessary protective measures;

e) when the online test or operate in extreme environments, such as low temperature, high temperature and other conditions, should be considered frostbite, burns, heat stroke and other factors, And to take the necessary protective measures;

f) if there are other possible damage poisonous gases and other environmental factors, the human body, in the implementation of testing should be carefully identified Knowledge, and take the necessary protective measures.