NB/T 42068-2016 Active Industry standards-Energy

NB/T 42068-2016 Screw Expansion Machine Main Unit, Rotor Ultrasonic Probing

Publish Date: 2016-08-16 Implement Date: 2016-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: NB/T 42068-2016

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Other power generation equipment

ICS Name: Gas turbines, steam turbines, and steam engines

Publish Date: 2016-08-16

Implement Date: 2016-12-01

Pages: 11 pages

Scope

This standard specifies the basic requirements and inspection methods for ultrasonic testing of the main cast steel parts and rotor forgings of screw expanders using refrigerant mixtures (vapor-liquid two-phase), saturated steam or superheated steam, as well as non-water low-boiling point refrigerants; and the methods for defect recording and quality grading of castings and forgings based on the results of ultrasonic testing, and the management methods of technical files.