ISO 16148:2016
Gas cylinders — Refillable seamless steel gas cylinders and tubes — Acoustic emission examination (AT) and follow-up ultrasonic examination (UT) for periodic inspection and testing
ISO 16148:2016 gives procedures for the use of acoustic emission examination (AT) and ultrasonic examination (UT) follow-up during the periodic inspection and testing of seamless steel cylinders and tubes with a water capacity of up to 3 000 l used for compressed and liquefied gases. This examination provides acoustic emission (AE) indications and locations that are evaluated by a secondary examination using UT for a possible flaw in the cylinder or tube. Methods other than UT for the secondary examination are not covered by this International Standard.
ISO 16148:2016 does not cover composite cylinders.
CAUTION ? Some of the tests specified in this International Standard involve the use of processes which could lead to a hazardous situation.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operational principles
5 Personnel qualification
6 Special considerations to ensure valid tests
6.1 General
6.2 Acoustic emission examination methods
6.3 Pressurization
6.4 Safety precautions
7 Acoustic emission examination equipment
8 Acoustic emission examination calibration and equipment verification
8.1 Calibration
8.2 Equipment verification
9 Overall procedure
10 Real-time evaluation criteria
11 AT test report
12 Follow-up ultrasonic examination
Annex A (normative) Ultrasonic examination (UT) follow-up to acoustic emission examination (AT)
Annex B (normative) AT equipment specifications
Annex C (normative) Example instrument settings, examination methods and rejection criteria for MAE
Annex D (informative) Alternative method for source location
Annex E (informative) Distance amplitude correction procedures
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operational principles
5 Personnel qualification
6 Special considerations to ensure valid tests
6.1 General
6.2 Acoustic emission examination methods
6.3 Pressurization
6.4 Safety precautions
7 Acoustic emission examination equipment
8 Acoustic emission examination calibration and equipment verification
8.1 Calibration
8.2 Equipment verification
9 Overall procedure
10 Real-time evaluation criteria
11 AT test report
12 Follow-up ultrasonic examination
Annex A (normative) Ultrasonic examination (UT) follow-up to acoustic emission examination (AT)
Annex B (normative) AT equipment specifications
Annex C (normative) Example instrument settings, examination methods and rejection criteria for MAE
Annex D (informative) Alternative method for source location
Annex E (informative) Distance amplitude correction procedures
Bibliography