British Standards Institution

Source:: CENELEC
Committee:: EXL/31 - Equipment for explosive atmospheres
Categories:: Information management | Standardization. General rules

Scope

This document refers to UGLDs (ultrasonic gas leak detectors) that work in a frequency beyond the audible range. This document is applicable to fixed ultrasonic gas leak detection equipment intended to provide an indication, alarm or other output function for the purpose of initiating automatic or manual protective action(s). This document specifies general requirements for design, testing and performance, and describes test methods that apply to UGLD. The following items are considered in this document: - Leak rates to be used to verify the detection range of UGLD, - Test gas to be used (nitrogen or compressed air), - Nozzle shape and size used at all tests leak rate tests, - Gas pressure used at all leak rate tests, - Time duration of each leak rate test, - Test leak nozzle height from solid ground, - Test leak nozzle angling relative to test UGLD, - UGLD angle relative to the leak (field of coverage of the UGLD), - Wind speed and direction, air temperature and humidity at day of test, - Minimum distance to solid structures (walls, etc.) at test site, - Installation height relative to the ground, - Texture of solid ground between leak and UGLD, - Background noise sources, known to interfere with UGLDs, - Specification of detection radius in 3 dimensions, - Operational requirements such as temperature, vibration, etc. This document is also applicable when an equipment manufacturer makes any claims regarding any special features of construction or superior performance that exceed the minimum requirements of this document. This document prescribes that all such claims are verified, and that the test procedures are extended or supplemented, where necessary, to verify the claimed performance. The additional tests are agreed between the manufacturer and test laboratory and identified and described in the test report. This document does not apply to portable gas detectors using ultrasonic measurements nor to gas detectors using non-ultrasonic measurements to detect a gas leak.

Purpose

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:

25/10/2024

Proposal end date:

22/11/2024

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

NWIP prEN 50724 Fixed Ultrasonic Gas Leak Detectors (UGLD) - General requirements and test methods

Scope

Purpose

Comment on proposal

Discard changes?

Submit comment

Submit comment

Follow standard

Unfollow standard

Error