ISO TS 22391-7-2018 PDF

Full title and description

Plastics piping systems for hot and cold water installations — Polyethylene of raised temperature resistance (PE-RT) — Part 7: Guidance for the assessment of conformity (ISO/TS 22391-7:2018). This Technical Specification provides requirements and guidance for the assessment of conformity of materials, products and assemblies covered by the ISO 22391 series so they can be incorporated into a manufacturer's quality plan and used as the basis for certification procedures for PE-RT piping systems used in building hot and cold water installations (domestic and heating systems).

Abstract

ISO/TS 22391-7:2018 gives guidance on how to assess conformity of PE‑RT piping system components and assemblies in accordance with the relevant parts of the ISO 22391 series. It describes how tests and checks should be organised within a manufacturer's quality management system, how conformity evidence can be assembled, and how certification procedures can be established. The document includes a basic test matrix to help readers identify applicable assessment actions.

General information

• Status: Published
• Publication date: November 2018 (Edition 2)
• Publisher: International Organization for Standardization (ISO) — also issued/adopted by regional bodies as CEN/PD where applicable
• ICS / categories: 93.025, 23.040.01, 91.140.60
• Edition / version: Edition 2 (2018)
• Number of pages: 16

Scope

This Technical Specification applies to polyethylene of raised temperature resistance (PE‑RT) piping systems intended for hot and cold water installations inside buildings, including domestic potable-water systems and heating systems. It is intended to be used in conjunction with the other parts of the ISO 22391 series and covers guidance for the assessment of conformity of materials, products and assemblies under the design pressures and temperatures appropriate to the system application classes.

Key topics and requirements

• Structure and principles for conformity assessment of PE‑RT pipes, fittings and assemblies.
• Guidance for including tests, inspections and checks in a manufacturer's quality plan and quality management system.
• Recommendations for establishing third‑party certification procedures and certification schemes appropriate to PE‑RT systems.
• Identification of essential tests and performance checks relevant to system fitness for purpose (test matrix provided in an annex).
• Applicability to domestic potable water and heating system classes with reference to design pressures and temperatures defined in other ISO 22391 parts.
• Guidance on documentation and evidence needed to demonstrate conformity (sampling, type testing, factory production control where applicable).

Typical use and users

Primary users are manufacturers of PE‑RT pipes, fittings and assemblies; test laboratories and conformity assessment bodies that perform type testing and certification; notified bodies and third‑party certifiers; product specifiers, consultants and building services engineers evaluating system compliance; regulators and procurement authorities requiring documented conformity; and installers and system integrators who rely on certified components for safe, code‑compliant installations.

Related standards

ISO/TS 22391-7:2018 is part of the ISO 22391 series on PE‑RT piping systems. Closely related documents include ISO 22391-1 (General), ISO 22391-2, ISO 22391-3 (Fittings) and ISO 22391-5 (Fitness for purpose) and subsequent amendments and national/adopted versions (EN/CEN adoptions). Readers should consult the other parts of ISO 22391 for detailed product, test and performance requirements referenced by this conformity guidance.

Keywords

PE-RT, plastics piping systems, hot and cold water installations, conformity assessment, certification, quality plan, factory production control, type testing, potable water, heating systems, test matrix.

FAQ

Q: What is this standard?

A: ISO/TS 22391-7:2018 is a Technical Specification giving guidance for the assessment of conformity of polyethylene of raised temperature resistance (PE‑RT) piping systems used in hot and cold water installations within buildings.

Q: What does it cover?

A: It covers how to organise tests, inspections and quality‑management actions to demonstrate conformity of materials, products and assemblies in the ISO 22391 series. It offers recommendations for incorporation of those activities into a manufacturer's quality plan and for setting up certification procedures; an annex provides a basic test matrix.

Q: Who typically uses it?

A: Manufacturers, test laboratories, conformity assessment and certification bodies, specifiers, building services engineers, regulators and procurement authorities, and installers who work with PE‑RT piping systems.

Q: Is it current or superseded?

A: The 2018 edition (Edition 2) is the current ISO/TS 22391-7 publication (published November 2018). It supersedes the earlier 2011 edition.

Q: Is it part of a series?

A: Yes. It is one part of the ISO 22391 series addressing PE‑RT piping systems (see other parts such as ISO 22391-1, ISO 22391-3, ISO 22391-5, etc.) which together define materials, product, system and conformity requirements.

Q: What are the key keywords?

A: PE‑RT, conformity assessment, plastics piping, hot and cold water, certification, quality plan, type testing, potable water, heating systems.