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BS 7523:1991

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Specification for preformed cellular polyethylene (PE) materials for the thermal insulation of pipework
Available format(s)

Hardcopy , PDF

Withdrawn date

01-02-2024

Language(s)

English

Published date

10-31-1991

Publisher

British Standards Institution

Committees responsible
Foreword
Specification
1. Scope
2. Composition
3. Types
4. Dimensions and tolerances
5. Physical properties
6. Condition and appearance
7. Sampling
8. Pipe sections
9. Marking
Appendices
A. Factors affecting the thermal conductivity
B. Method for the determination of thermal
     conductivity
C. Burning properties of polyethylene (PE) cellular
     materials
D. Notes for designers
Tables
1. Dimensional tolerances for pipe insulation
2. Physical properties
3. Symbols and units
Figures
1. Guarded end apparatus
2. Calibrated or calculated end apparatus
3. Nukiyama correction

Requirements for two types of polyethylene pipe insulation.

This British Standard specifies the composition, properties and dimensional tolerances for preformed cellular polyethylene (PE) materials for the thermal insulation of pipework. The nominal operating temperature range for the materials is − 40 °C to + 80 °C (see note 1).

NOTE 1 Manufacturers have experienced no detrimental effects at service temperatures up to 100 °C. Consideration will be given, therefore, to raising the upper service temperature limit at the next revision of this British Standard.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
B/540
DevelopmentNote
Supersedes 88/43770 DC. (10/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Withdrawn

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BS 5111-1:1974 Laboratory methods of test for determination of smoke generation characteristics of cellular plastics and cellular rubber materials Method for testing a 25 mm cube test specimen of low density material (up to 130 kg/m<sup>3</sup>) to continuous flaming conditions
BS 2972:1989 Methods of test for inorganic thermal insulating materials
ISO 8497:1994 Thermal insulation — Determination of steady-state thermal transmission properties of thermal insulation for circular pipes
BS 6700:1987 Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
BS 4370-2:1973 Methods of test for rigid cellular materials Methods 6-10
BS 5422:1990 Method for specifying thermal insulating materials on pipes, ductwork and equipment (in the temperature range -40°C to +700°C)
BS 4735:1974 Laboratory method of test for assessment of the horizontal burning characteristics of specimens no larger than 150 mm x 50 mm x 13 mm (nominal) of cellular plastics and cellular rubber materials when subjected to a small flame
BS 6336:1982 Guide to development and presentation of fire tests and their use in hazard assessment
ISO 7345:1987 Thermal insulation Physical quantities and definitions

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