Ships and marine technology -- Fire resistance of metallic pipe components with resilient and elastomeric seals -- Test methods

ISO 19921:2005 specifies test procedures for determining the fire resistance of metallic valves, pipe couplings, and similar pipe components which contain a resilient or elastomeric seal and which are used in ship engineering systems. The purpose of ISO 19921:2005 is to determine whether, after the period of fire testing on a test bench which fulfils the requirements of ISO 19922, pipeline components remain tight, and without any failure which could affect their function, even when subjected to proof pressure.

Navires et technologie maritime -- Résistance au feu des composants de tuyaux métalliques avec joints élastiques ou élastomères -- Méthodes d'essai

General Information

Status
Published
Publication Date
11-Oct-2005
Current Stage
6060 - International Standard published
Start Date
30-Aug-2005
Completion Date
12-Oct-2005
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ISO 19921:2005 - Ships and marine technology -- Fire resistance of metallic pipe components with resilient and elastomeric seals -- Test methods
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INTERNATIONAL ISO
STANDARD 19921
First edition
2005-10-01
Ships and marine technology — Fire
resistance of metallic pipe components
with resilient and elastomeric seals —
Test methods
Navires et technologie maritime — Résistance au feu des composants
de tuyaux métalliques avec joints élastiques ou élastomères —
Méthodes d'essai
Reference number
ISO 19921:2005(E)
ISO 2005
---------------------- Page: 1 ----------------------
ISO 19921:2005(E)
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© ISO 2005

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ii © ISO 2005 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19921:2005(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope ..................................................................................................................................................... 1

2 Normative references ........................................................................................................................... 1

3 Designation ........................................................................................................................................... 1

4 Test pieces and preparation ................................................................................................................ 2

5 Number of test pieces .......................................................................................................................... 2

6 Test bench ............................................................................................................................................. 2

7 Test performance.................................................................................................................................. 2

7.1 Installation of test pieces..................................................................................................................... 2

7.2 Preparation ............................................................................................................................................ 3

7.3 Measured values and measuring points ............................................................................................3

7.4 Commencement of test ........................................................................................................................ 4

7.5 Test temperatures................................................................................................................................. 4

7.6 Test pressures ...................................................................................................................................... 4

7.7 Test duration ......................................................................................................................................... 4

7.8 Heat flux................................................................................................................................................. 4

8 Assessment........................................................................................................................................... 4

9 Test certificate....................................................................................................................................... 5

Annex A (normative) Test certificate................................................................................................................ 6

Annex B (informative) Evidence of suitability of other pipeline components via representative

nominal bores ....................................................................................................................................... 7

Annex C (informative) Pipeline components that can be fire-test qualified using this International

Standard ................................................................................................................................................ 8

Bibliography ....................................................................................................................................................... 9

© ISO 2005 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 19921:2005(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 19921 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee

SC 3, Piping and machinery.
iv © ISO 2005 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 19921:2005(E)
Introduction

The purpose of this International Standard is to establish whether a metallic valve, fitting, coupling or similar

piping component that contains a resilient or elastomeric seal can be exposed to fire without losing its function,

i.e. without leaking when exposed to normal operating pressure.

Only water is permitted as the test medium. The use of combustible test media is prohibited in order to ensure

the safety of operators and the test bench.

The test method in this International Standard is intended to provide reproducible results when combined with

the test bench in accordance with ISO 19922.

In case of a request for a flame test under different test conditions, e.g. flame temperature, working pressure

or duration of flame application, the test is carried out in accordance with this International Standard with the

test bench in accordance with ISO 19922, but under the specific conditions requested.

© ISO 2005 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 19921:2005(E)
Ships and marine technology — Fire resistance of metallic pipe
components with resilient and elastomeric seals —
Test methods
1 Scope

This International Standard specifies test procedures for determining the fire resistance of metallic valves,

pipe couplings, and similar pipe components which contain a resilient or elastomeric seal and which are used

in ship engineering systems.

The purpose of this International Standard is to determine whether, after the period of fire testing on a test

bench which fulfils the requirements of ISO 19922, pipeline components remain tight, and without any failure

which could affect their function, even when subjected to proof pressure.
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 19922, Ships and marine technology — Fire resistance of metallic pipe components with resilient and

elastomeric seals — Requirements imposed on the test bench
3 Designation

The designation of the test for determining the fire resistance is composed of the elements quoted in the

example below:
Test ISO 19921 — 30 — 5 — 24 — F
In this designation the elements have the following meaning:
Test: designation.
ISO 19921: number of this International Standard.
30: test du
...

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