British Standards Institution

Source:: ISO
Committee:: PRI/66 - Rubber and plastics tubing, hoses and hose assemblies
Categories:: Information management | Standardization. General rules | Engineering | Fluid systems and components | Hoses and hose assemblies | Manufacturing | Petroleum and related technologies | Rubber and plastic industries | Rubber and plastics products

Scope

This International Standard specifies three methods for the determination of the volume of gas diffusing through a rubber or plastics hose or length of tubing in a specified time. Unless otherwise specified by the relevant standards, Method 1 is the preferred method.

Method 1: For determining precisely the permeability of a hose or hose assembly to the test gas. The permeability is calculated with respect to the length of the hose or tubing.

Method 2: For determining the permeability of the complete hose or length of tubing, excluding endfittings, to the test gas. The permeability is calculated with respect to the length of the hose or tubing.

Method 3: For determining the permeability at the hose/fitting interface. This method is used when determining the permeability characteristics of hoses with an unpricked cover, when the gas usually issues from the textile reinforcement at the cut ends. The permeability is calculated with respect to the length of the hose.

The methods are applicable only to gases which are insoluble in water.

Purpose

The purpose of this proposal is to revise several problems in the test method for determining the gas permeability of rubber and plastic hoses and hose assemblies.

*Add a Gas-leakage tests to confirm the airtightness of the Test pieces.

* The test piece shall be a length of pricked or unpricked wire- or textile-reinforced hose fitted with end couplings.

* Expression of gas permeability etc.

Consider the following:

Is there a verified market need for the proposal?

What problem does this document solve?

What value will the document bring to end-users?

See Annex C of the ISO/IEC Directives, Part 1 for more information.

See the following guidance on justification statements in the brochure ‘Guidance on New work’: https: //www.iso.org/publication/PUB100438.html

Comment on proposal

Required form fields are indicated by an asterisk (*) character.

How important do you think standardization is in this area? *

Do you agree that a standard on this subject is feasible?: *

Please give reasons for your selections above: *

Would you or your organization use the standard? *

Would you or your organization be prepared to participate in the development of the standard or to comment on the draft when it is available? *

Are you aware of any regulation, existing standards and other good practice information in this area in the UK (e.g. Industry codes of practice; company specifications, international or European Standards)? *

Would the development of a standard(s) in this area have a particular impact/relevance to SME, consumer, environmental or societal interests? *

Are you aware of any other organizations to which this proposal may be relevant? If so please provide details below. *

Additional comments on the scope or proposal:

Although BSI will not usually enter into correspondence regarding individual comments or suggestions we may wish to contact you to seek further clarification. Please indicate whether this will be acceptable: *

Discard

Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal

Proposal start date:

23/09/2020

Proposal end date:

16/10/2020

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

ISO/TC 45/SC 1 N 2062, ISO/NP 4080 Rubber and plastics hoses and hose assemblies - Determination of permeability to gas

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