ISO TR 12662-1997 PDF

Full title and description

ISO/TR 12662:1997 — Certification scheme for prestressing steels. A Technical Report that provided guidance and recommended rules which may be applied for a certification scheme for continuous production of prestressing steels, aimed at verifying conformity with requirements specified in relevant product standards.

Abstract

This technical report set out a model certification scheme for prestressing steels used in prestressed concrete, describing roles and responsibilities for producers and certification bodies, general requirements for production and testing, and procedures for initial evaluation and surveillance. The report was intended as guidance to support conformity assessment and to be used alongside product standards such as the ISO 6934 series.

General information

• Status: Withdrawn (withdrawal recorded 10 December 2013).
• Publication date: July 1997 (1997-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.140.15; 91.080.40.
• Edition / version: Edition 1 (1997).
• Number of pages: 13.

(Core bibliographic details as shown in the ISO catalogue.)

Scope

ISO/TR 12662 provided recommended rules and a framework that could be applied to a product certification scheme for continuous production of prestressing steels. Its scope covered the certification process necessary to verify that manufactured prestressing steels conform to the relevant product standards (for example the ISO 6934 family), including requirements for production controls, testing and sampling, and the activities of certification bodies. The document was guidance rather than a prescriptive international standard and was used together with specific product standards.

Key topics and requirements

• Model rules for a certification scheme for continuous production of prestressing steels (initial evaluation, certification decision, attestation and surveillance).
• Requirements for manufacturer production controls, testing and record keeping to demonstrate ongoing conformity.
• Sampling and testing principles to be used for product verification and long‑term quality monitoring (representative diameters, frequency and origin of samples).
• Roles and competence requirements for certification bodies and auditors; link between product certification and the manufacturer's quality management system.
• Reference to relevant product standards (for mechanical and chemical requirements) and conformity assessment guides.

Typical use and users

Used by national standards bodies, certification bodies, testing laboratories, and steel producers involved with manufacture of prestressing steels for concrete. The TR supported regulators, specifiers and construction industry stakeholders who needed to understand or set up certification routes to verify steel quality for prestressed concrete applications.

Related standards

Related documents include product standards for prestressing steels (ISO 6934 series and other parts dealing with wire, strand and bars), conformity assessment and certification guides (historically ISO/IEC Guide 65 and later ISO/IEC 17065), and later ISO deliverables that formalize certification schemes for reinforcing/prestressing steel such as ISO 10144 (2018). These documents are commonly referenced together when establishing certification and testing programmes.

Keywords

prestressing steels; certification scheme; conformity assessment; sampling; testing; ISO 6934; ISO/TC 17/SC 16; production surveillance; prestressed concrete.

FAQ

Q: What is this standard?

A: ISO/TR 12662:1997 is a Technical Report titled "Certification scheme for prestressing steels" that provided guidance on setting up certification schemes for continuous production of prestressing steels.

Q: What does it cover?

A: It covers recommended rules and a framework for product certification of prestressing steels, including aspects of initial evaluation, production control, testing and surveillance to verify conformity with product standards. The TR was intended to be used alongside specific product standards such as the ISO 6934 series.

Q: Who typically uses it?

A: Steel manufacturers, certification bodies, testing laboratories, specifiers and construction industry stakeholders who require guidance on certification and conformity assessment for prestressing steels.

Q: Is it current or superseded?

A: ISO/TR 12662:1997 has been withdrawn (withdrawal recorded 10 December 2013). The subject matter of certification schemes for reinforcement and prestressing steels is addressed in later ISO documents such as ISO 10144 (current edition published 2018), which provides a formalized certification scheme for steel bars and wires. Users should refer to ISO 10144 and current product standards for up‑to‑date requirements.

Q: Is it part of a series?

A: The TR is associated with the family of ISO deliverables on steels for reinforcement and prestressing of concrete and relates to product standards (ISO 6934 series) and conformity assessment guidance; it sits in the work programme of ISO/TC 17/SC 16. Later related deliverables include ISO 10144 which deals with certification schemes for bars and wires.

Q: What are the key keywords?

A: Prestressing steels, certification, conformity assessment, sampling, testing, surveillance, ISO 6934, ISO 10144, ISO/TC 17/SC 16.