EN ISO 16148:2006
(Main)Gas cylinders - Refillable seamless steel gas cylinders - Acoustic emission testing (AT) for periodic inspection (ISO 16148:2006)
Gas cylinders - Refillable seamless steel gas cylinders - Acoustic emission testing (AT) for periodic inspection (ISO 16148:2006)
ISO 16148:2006 is a guideline for using acoustic emission testing (AT) during re-qualification of seamless steel cylinders and tubes of water capacity up to 3 000 l used for compressed and liquefied gases. For cylinders below 20 l additional precautions may be taken due to the potential reflections from the ends. This test provides indications and locations that should be evaluated by another test for a possible flaw in the cylinder. ISO 16148:2006 covers monolithic steel cylinders.
Gasflaschen - Wiederbefüllbare, nahtlose Gasflaschen aus Stahl - Schallemissionsverfahren bei der wiederkehrenden Prüfung (ISO 16148:2006)
Diese Internationale Norm ist eine Richtlinie für die Anwendung der Schallemissionsprüfung (AT) während der wiederkehrenden Prüfung von nahtlosen Flaschen und Großflaschen aus Stahl mit einem Fassungsraum bis zu 3 000 Liter für verdichtete und verflüssigte Gase. Für Flaschen mit einem Fassungsraum bis zu 20 Liter sind wegen der potentiellen Reflexionen von den Enden zusätzliche Vorsichtsmaßnahmen zu treffen. Diese Prüfung ergibt Anzeigen und Ortungen, die durch eine andere Prüfung auf eine mögliche Kerbe in der Flasche bewertet werden sollten. Diese Internationale Norm gilt für Monolithische Stahlflaschen.
Bouteilles à gaz - Bouteilles à gaz rechargeables en acier sans soudures - Essai par émission acoustique pour contrôle periodique (ISO 16148:2006)
L'ISO 16148:2006 fournit des lignes directrices permettant d'utiliser les essais d'émission acoustique (AT) lors des réépreuves des bouteilles et tubes en acier, sans soudure, d'une capacité en eau allant jusqu'à 3 000 l, utilisés pour les gaz comprimés et liquéfiés. Pour les bouteilles d'une capacité inférieure à 20 l, des précautions supplémentaires peuvent être prises en raison des reflets potentiels des extrémités. Les essais fournissent des indications et des localisations qu'il convient d'évaluer par un autre essai pour déterminer un éventuel défaut dans la bouteille. L'ISO 16148:2006 traite des bouteilles en acier "monolithiques" (non composites).
Plinske jeklenke – Ponovno polnljive plinske jeklenke iz celega – Preskus z zvočno emisijo kot periodični pregled (ISO 16148:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2006
3OLQVNHMHNOHQNH±3RQRYQRSROQOMLYHSOLQVNHMHNOHQNHL]FHOHJD±3UHVNXV]]YRþQR
HPLVLMRNRWSHULRGLþQLSUHJOHG ,62
Gas cylinders - Refillable seamless steel gas cylinders - Acoustic emission testing (AT)
for periodic inspection (ISO 16148:2006)
Gasflaschen - Wiederbefüllbare, nahtlose Gasflaschen aus Stahl -
Schallemissionsverfahren bei der wiederkehrenden Prüfung (ISO 16148:2006)
Bouteilles a gaz - Bouteilles a gaz rechargeables en acier sans soudures - Essai par
émission acoustique pour contrôle periodique (ISO 16148:2006)
Ta slovenski standard je istoveten z: EN ISO 16148:2006
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 16148
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2006
ICS 23.020.30
English Version
Gas cylinders - Refillable seamless steel gas cylinders -
Acoustic emission testing (AT) for periodic inspection (ISO
16148:2006)
Bouteilles à gaz - Bouteilles à gaz rechargeables en acier Gasflaschen - Wiederbefüllbare, nahtlose Gasflaschen aus
sans soudures - Essai par émission acoustique pour Stahl - Schallemissionsverfahren bei der wiederkehrenden
contrôle periodique (ISO 16148:2006) Prüfung (ISO 16148:2006)
This European Standard was approved by CEN on 3 April 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16148:2006: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 16148:2006) has been prepared by Technical Committee ISO/TC 58
"Gas cylinders" in collaboration with Technical Committee CEN/TC 23 "Transportable gas
cylinders", the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by November 2006, and conflicting national
standards shall be withdrawn at the latest by November 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 16148:2006 has been approved by CEN as EN ISO 16148:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 16148
First edition
2006-05-01
Gas cylinders — Refillable seamless steel
gas cylinders — Acoustic emission
testing (AT) for periodic inspection
Bouteilles à gaz — Bouteilles à gaz rechargeables sans soudure —
Essais d'émmision acoustique pour contrôle périodique
Reference number
ISO 16148:2006(E)
©
ISO 2006
ISO 16148:2006(E)
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ii © ISO 2006 – All rights reserved
ISO 16148:2006(E)
Contents
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Operational principles.2
5 Personnel qualification .3
6 Special considerations to ensure valid tests.3
7 Apparatus .4
8 Calibration and equipment verification .6
9 Overall procedure .6
10 Real-time evaluation criteria.7
11 Test report .8
Annex A (normative) Instrumentation specifications.10
Annex B (informative) Alternative method for source location.12
Annex C (informative) Example instrument settings, examination methods and rejection criteria
for modal acoustic emission (MAE).15
Annex D (informative) Distance amplitude correction procedures.18
Bibliography .21
ISO 16148:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16148 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4,
Operational requirements for gas cylinders, in collaboration with Technical Committee CEN/TC 23,
Transportable gas cylinders, of the European Committee for Standardization.
iv © ISO 2006 – All rights reserved
ISO 16148:2006(E)
Introduction
In recent years, new non-destructive examination (NDE) techniques have been successfully introduced as an
alternative to the conventional re-testing procedures of gas cylinders, tubes and other cylinders.
One of the alternative NDE methods for certain applications is acoustic emission testing (AT), which has
proved to be an acceptable testing method applied during periodic inspection in some countries.
The test method requires pressurization to a level greater than the normal filling pressure.
The pressurization medium may be either gas or liquid.
Acoustic emission (AE) measurements are used to detect and locate emission sources. Other NDE methods
are needed to evaluate the significance of AE detected sources. Procedures for other NDE techniques are
beyond the scope of this International Standard. For example, shear wave, angle beam ultrasonic inspection
is commonly used to establish the exact position and dimensions of flaws that produce AE.
This International Standard includes two methods of AT and, for the purpose of differentiation, the methods
are addressed as Method A and Method B (see Clause 3).
With the agreement of the testing and certifying body approved by the competent authority of the country of
approval, the hydraulic pressure test of cylinders and tubes may be replaced by an equivalent method based
on acoustic emission.
INTERNATIONAL STANDARD ISO 16148:2006(E)
Gas cylinders — Refillable seamless steel gas cylinders —
Acoustic emission testing (AT) for periodic inspection
1 Scope
This International Standard is a guideline for using acoustic emission testing (AT) during re-qualification of
seamless steel cylinders and tubes of water capacity up to 3 000 l used for compressed and liquefied gases.
For cylinders below 20 l additional precautions may be taken due to the potential reflections from the ends.
This examination provides indications and locations that should be evaluated by another examination for a
possible flaw in the cylinder. This International Standard covers monolithic steel cylinders.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 6406, Gas cylinders — Seamless steel gas cylinders — Periodic inspection and testing
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
EN 1330-9, Non-destructive testing — Terminology — Part 9: Terms used in acoustic emission testing
EN 13477-1, Non-destructive testing — Acoustic emission — Equipment characterisation — Part 1:
Equipment description
EN 13477-2, Non-destructive testing — Acoustic emission — Equipment characterisation — Part 2:
Verification of operating characteristic
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1330-9 and the following apply.
3.1
fracture critical flaw
defect that is large enough to exhibit unstable crack growth under certain service conditions
3.2
working pressure
settled pressure at a uniform temperature of 288 K (15 °C) for a full gas cylinder with the maximum
permissible charge of compressed gas
NOTE 1 In North America service pressure is often used to indicate a similar condition, usually at 21,1 °C (70 °F).
NOTE 2 For compressed gases, this value is usually stamped on the cylinder.
ISO 16148:2006(E)
3.3
normal filling pressure
level to which a receptacle is pressurized during filling
NOTE This is usually greater than the marked working pressure due to the heat of compression.
3.4
acoustic emission test pressure
AE test pressure
maximum pressure at which acoustic emission testing is performed
3.5
maximum allowable pressure
maximum pressure a receptacle may experience
NOTE For liquefied gases, this is the developed pressure at the maximum service temperature (e.g. 65 °C).
3.6
acoustic emission pressure test range
range of pressure during which acoustic emission is monitored
3.7
Method A
acoustic emission testing performed during pne
...
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