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The air test is not covered by BS EN 1916:2002/BS5911-1:2002, but a pipe which complies with the standard will usually comply with the air test. Failure to pass the air test will not preclude the acceptance of the pipeline if a successful water test can be achieved.
1. Ensure the test equipment is in good condition. Inflatable stoppers are recommended for ease of use.
2. The test should be carried out after every 3 or 4 correctly laid and jointed pipes prior to commencement of backfill.
3. A successful test is achieved if the equipment shows a fall in pressure of no more than 25mm after 5 minutes, having allowed a suitable period for stabilisation.
4. If the pressure falls sharply and the pipes appear to have failed, the following checks must be made before contacting CPM for assistance:
- Check the test equipment is in good condition.
- Check if the stoppers are leaking — use industrial
soap around the edge of the stopper to provide an effective seal, if necessary.
- Check the joint rings are correctly located.
Dramatic temperature changes both in and out of the pipe could affect the air test. Reference should be made to BS 8005 : Part 1 .
If after following the guidance on this advice sheet you still have problems with our product, please contact the supplying works in the first instance, on the following telephone numbers or the technical department advice line on 01384 221369.
Mells |
01179 812791 |
Pollington |
01405 860591 |
Newmains |
01698 386922 |
CPM Group Ltd regret that failure to follow the advice given may result in any subsequent claims being invalid or in a call out charge being made if CPM technical personnel have to attend on site.
When installing concrete pipes always ensure compliance with all current Health and Safety legislation, and the CPM Group Ltd health and safety product data sheet.
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