ISO 10124-1994 PDF

Full title and description

Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes — Ultrasonic testing for the detection of laminar imperfections. This International Standard specifies requirements for ultrasonic testing of seamless and welded steel tubes (outside diameter > 30 mm) to detect laminar imperfections and defines four acceptance levels for evaluation.

Abstract

Specifies requirements for ultrasonic testing of seamless and welded (except SAW) steel tubes for the detection of laminar imperfections, including acceptance levels and inspection limits; applicable to tubes with an outside diameter greater than 30 mm and with no explicit lower limit for wall thickness.

General information

• Status: Withdrawn.
• Publication date: 15 December 1994 (Edition 1, 1994).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.040.10 (Iron and steel pipes); 77.040.20 (Non-destructive testing of metals); 77.140.75 (Steel pipes and tubes for specific use).
• Edition / version: First edition (1994).
• Number of pages: 5 pages.

Scope

Applies to ultrasonic inspection of seamless and welded (except submerged arc-welded) steel tubes for pressure purposes to detect laminar imperfections (imperfections lying essentially parallel to the tube surface). Covers inspection after primary production operations for tubes with outside diameter greater than 30 mm; no lower limit for wall thickness is specified, though detection and sizing may be difficult for very thin walls and shall be agreed between purchaser and manufacturer where necessary.

Key topics and requirements

• Definition of laminar imperfections and their relevance to pressure tubes.
• Automated ultrasonic testing methods and equipment requirements for full peripheral inspection of tube body and weld-adjacent zones (as applicable).
• Four acceptance levels for laminar imperfection evaluation; selection of the appropriate level is determined by the relevant product/contract standard.
• Requirements for qualified/certified NDT personnel (references to ISO/TC 17/SC 19 and ISO 11484 for NDT personnel qualification).
• Inspection practice notes for tubes with small wall thickness and alternatives such as strip testing prior to tube forming.

Typical use and users

Used by tube manufacturers, quality and NDT engineers, inspection bodies, purchasers and specifiers of steel tubes for pressure applications (boilers, heat exchangers, steam headers, piping). It guided production and acceptance criteria for ultrasonic detection of laminar defects in production and third-party inspection contexts.

Related standards

ISO 10124:1994 has been withdrawn and its subject matter was revised and incorporated in ISO 10893-8:2011 (Non-destructive testing of steel tubes — Part 8: Automated ultrasonic testing for detection of laminar imperfections). Other related standards include ISO 11484 (qualification and certification of NDT personnel) and ISO 12094 (ultrasonic testing of steel strip/plate used in welded tube manufacture) and relevant EN/industry adoptions.

Keywords

ultrasonic testing, laminar imperfections, steel tubes, non-destructive testing, NDT, pressure tubes, acceptance levels, tube inspection

FAQ

Q: What is this standard?

A: ISO 10124:1994 is an ISO International Standard that specified ultrasonic testing requirements for detecting laminar imperfections in seamless and welded (except submerged arc-welded) steel tubes for pressure purposes.

Q: What does it cover?

A: It covered automated ultrasonic inspection methods, acceptance levels for laminar imperfections, personnel qualification references, and special considerations for tube diameters greater than 30 mm and thin-walled tubes.

Q: Who typically uses it?

A: Tube manufacturers, NDT and QA engineers, inspection bodies, purchasers and standards committees involved with steel tubes for pressure applications.

Q: Is it current or superseded?

A: ISO 10124:1994 has been withdrawn and superseded — the topic is covered by ISO 10893-8:2011 (Non-destructive testing of steel tubes — Part 8). Users should apply the current ISO 10893-8 text for up-to-date requirements.

Q: Is it part of a series?

A: The content relates to the broader suite of ISO standards on non-destructive testing and steel tubes (e.g., ISO 10893 series for NDT of steel tubes, ISO 11484 for NDT personnel qualification, ISO 12094 for strip testing) and has been integrated into the later ISO 10893-8 part of that series.

Q: What are the key keywords?

A: Ultrasonic testing, laminar imperfections, steel tubes, non-destructive testing, NDT personnel, acceptance levels, pressure tubes.