SY/T 6755-2016
Specification for inspecting butt joints of in-service oil and gas pipelines with ultrasonic phased array and multi-probes (English Version)

Standard No.

SY/T 6755-2016

Language

Chinese, Available in English version

Release Date

2016

Published By

Professional Standard - Petroleum

Latest

SY/T 6755-2016

Replace

SY/T 6755-2009

Scope

This standard specifies the requirements for the detection and quality assessment of circumferential butt joints, angular butt joints and pipe production butt joints of oil and gas pipelines in service using ultrasonic phased array and multi-probe ultrasonic inspection systems. This standard is applicable to the detection of butt joints of steel pipes with a wall thickness of 3.5mm to 50mm and a pipe diameter greater than or equal to 32mm. Automatic ultrasonic testing is not suitable for testing circumferential butt joints of steel pipelines with a diameter less than 100mm.

SY/T 6755-2016 Referenced Document

• ASTM E317 Standard Practice for Evaluating Performance Characteristics of Ultrasonic Pulse- Echo Examination Instruments and Systems Without the Use of Electronic Measurement Instruments
• GB/T 11259 Non-destructive testing.Practice for fabrication and control of steel reference blocks used in ultrasonic testing
• GB/T 12604.1 Non-destructive testing—Terminology—Ultrasonic testing*， 2020-11-19 Update
• GB/T 19799.1 Non-destructive testing.Ultrasonic testing.Specification for calibration block No. 1
• GB/T 50818 Mechanized ultrasonic testing technology specification for oil & gas construction pipeline project
• JB/T 4730.3 Nondestructive testing of pressure equipments
• SY/T 4109 Nondestructive testing of oil and gas steel pipeline*， 2020-10-23 Update

SY/T 6755-2016 history

• 2016 SY/T 6755-2016 Specification for inspecting butt joints of in-service oil and gas pipelines with ultrasonic phased array and multi-probes
• 2009 SY/T 6755-2009 Inspection of butt joints of in-service oil and natural gas pipeline by ultrasonic phased and multi-probes