GB 6249-1986
Replaced
NB/T 20740-2025
Active
Industry standards-Energy
NB/T 20740-2025 Phase array ultrasonic testing of weld seams for austenitic stainless steel piping
NB/T 20740-2025 Phase array ultrasonic testing of weld seams for austenitic stainless steel piping
Price:
$ 20.00
Basic Information
Standard Code:
NB/T 20740-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Nuclear reactors and nuclear island equipment in nuclear power plants
ICS Name:
Nuclear power stations, safety
Publish Date:
2025-12-18
Implement Date:
2026-06-18
Scope
This standard is applicable to the phased array ultrasonic inspection of welds in austenitic stainless steel pipelines in nuclear power plants. Welds in other austenitic stainless steel pipelines with similar structures can also be used as a reference for this inspection.
Development Information
Related Standards
GB/T 12726.1-1991
Replaced
GB/T 12726.1-1991 Radiation monitoring equipment for accident and post-accident conditions in nuclear power plants—Part 1:General requirements
GB/T 13178-1991
Replaced
GB/T 13178-1991 Partially depleted gold silicon surface barrier detectors
GB/T 13180-1991
Replaced
GB/T 13180-1991 G-M counter tubes for detecting γ radiation
GB/T 13182-1991
Replaced
GB/T 13182-1991 Scintillation detectors of sodium iodide (thallium)
GB/T 12726.2-1991
Replaced