ISO 19921-2005 PDF

Full title and description

Ships and marine technology — Fire resistance of metallic pipe components with resilient and elastomeric seals — Test methods. This International Standard specifies test procedures to determine the fire resistance of metallic valves, pipe couplings and similar pipe components that contain resilient or elastomeric seals and are used in ship engineering systems; its purpose is to verify that components remain tight and functional after fire exposure and subsequent proof pressure testing.

Abstract

ISO 19921:2005 defines standardized test methods to assess whether metallic pipeline components with resilient or elastomeric sealing elements maintain tightness and do not exhibit failures affecting function after a period of fire testing conducted on a test bench that fulfils the requirements of ISO 19922. The standard is intended for components used in shipboard engineering systems.

General information

• Status: Published (International Standard).
• Publication date: 12 October 2005.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 47.020.30 (Piping systems); 47.020.99 (Other standards related to shipbuilding and marine structures).
• Edition / version: Edition 1 (2005).
• Number of pages: 9 pages (official ISO publication).

Key bibliographic and status data above are taken from the ISO bibliographic record for ISO 19921:2005.

Scope

Applies to metallic valves, pipe couplings and similar metallic pipeline components that contain resilient or elastomeric seals and that are installed in ship engineering systems. The standard specifies how to perform fire-resistance tests in order to determine whether such components remain tight and functional after exposure to fire and subsequent proof-pressure testing. Fire tests under ISO 19921 are performed on a test bench configured in accordance with the requirements of ISO 19922.

Key topics and requirements

• Defined test procedures for fire exposure of metallic pipe components containing resilient or elastomeric seals.
• Assessment of tightness and functional integrity following fire exposure and application of proof pressure.
• Specification that tests are to be carried out on a test bench that meets the requirements set out in ISO 19922 (companion standard).
• Consideration of seal materials (resilient and elastomeric) and their impact on post-fire performance.
• Requirements for specimen preparation, instrumentation and observation of failure modes (leakage, loss of function, structural failure).

Primary normative content and the link to test-bench requirements are described in the ISO 19921:2005 and ISO 19922:2005 records.

Typical use and users

Used by shipbuilders, marine equipment and valve manufacturers, classification societies, marine systems designers, type-test laboratories and regulatory or certification bodies concerned with shipboard fire safety. It is referenced when qualifying components for continued functionality and leak-tightness after fire exposure in ship engineering systems.

Related standards

Companion standard: ISO 19922:2005 — Ships and marine technology — Fire resistance of metallic pipe components with resilient and elastomeric seals — Requirements imposed on the test bench. National/adopted equivalents include BS ISO 19921:2005 and various national adoptions/identical publications. The standard is used alongside other marine fire-safety rules and classification society test requirements when assessing equipment for shipboard use.

Keywords

fire resistance; pipe components; metallic valves; pipe couplings; resilient seal; elastomeric seal; ship engineering systems; fire test methods; test bench; tightness; proof pressure; marine safety; ISO/TC 8/SC 3.

FAQ

Q: What is this standard?

A: ISO 19921:2005 is an International Standard that specifies test methods to determine the fire resistance and post-fire tightness/functionality of metallic pipe components containing resilient or elastomeric seals used in ship engineering systems.

Q: What does it cover?

A: It covers the procedures for conducting fire-resistance tests on metallic valves, pipe couplings and similar components with resilient/elastomeric seals, and the subsequent evaluation (including proof pressure) to verify tightness and absence of function-affecting failures.

Q: Who typically uses it?

A: Shipyards, marine equipment manufacturers, classification societies, marine testing laboratories, system designers and certification bodies involved in ensuring shipboard pipe component fire performance.

Q: Is it current or superseded?

A: ISO 19921:2005 was published on 12 October 2005 and remains the published edition; the ISO bibliographic record shows the standard has undergone periodic systematic review and was confirmed/maintained in ISO reviews (confirmed in a 2020 review cycle). Users should check with their national standards body or ISO for any later amendments or revisions before relying on the text for compliance.

Q: Is it part of a series?

A: It is paired with ISO 19922:2005, which specifies requirements for the test bench used when performing the tests described in ISO 19921; national adoptions (for example BS ISO 19921:2005) may be published by member bodies.

Q: What are the key keywords?

A: Fire resistance, metallic pipe components, resilient seals, elastomeric seals, fire test methods, test bench, tightness, proof pressure, ship engineering systems.