How we undertake a Room Integrity Test
Our clients often ask how we undertake a room integrity test, so we have written this article to explain this in more detail.
- Any internal doors with the enclosure are opened and some of the false floor and/or ceiling tiles are removed so that the protected enclosure is tested as one space.
- The enclosure is measured, a plan made and the type and quantity of extinguishant recorded. The height of the highest protected equipment within the enclosure is noted.
- The door fan equipment is set up on an external door. Any other external access doors should be locked to prevent access by personal during the test. It is worth noting that operates may continue to work within the enclosure during the test, however they won’t be able to leave during the test, i.e. when pressure readings are being taken.
- Any mechanical air handling equipment that supply and/or extract to/from the enclosure will need to be set by the client to the same condition as would occur on system discharge – usually dampers closed and fans off. This need occur only whilst pressure readings are taken. Re-circulation and a/c units without fresh air make-up – external air supply) may be left operating throughout the test to prevent temperature build-up and possible damage to the critical equipment within the enclosure.
- The extinguishing system and enclosure data obtained earlier is entered on to the computer. This calculates the design concentration and the column pressure that would be exerted by the gas after discharge.
- The blower door fan is used to both pressurise and depressurise the enclosure to the column pressure and the fan pressure required in each case is recorded. For certain system design a series of pressure readings are taken.
- The pressure data is entered on to the computer which calculates the airflow, equivalent leakage area and the retention time.
If the result satisfies the specified retention time – usually 10 minutes) the enclosure is deemed to have passed the room integrity test.
- If the retention time is less than that required, a detailed smoke survey inspection is undertaken to establish the main leakage paths. Our small chemical smoke pencils are used as they only produce very small quantities of smoke at the perimeter of the enclosure and are not used in the vicinity of any sensitive electronic equipment.
- If practicable, major leaks may be sealed by the client and new pressure readings taken and a revised retention time is then calculated. Retention times meeting requirements are recorded as passes.
- A full written test report will be submitted. The report contains details of the enclosure, extinguishing system parameters, pressurisation results and predicted retention time graph. Recommendations are given advising the sponsor of any leakage areas or other features requiring remedial action.
- A Room Integrity Test pass cert will is produced which should be laminated and attached to the front door of the protected enclosure.
- We usually allow 2 hours to undertake each Room Integrity Test enclosure.
we hope this article goes some way to explaining how we undertake a room integrity test. If you require more information in regards to integrity testing compliance on your server room, please do not hesitate to contact Darren direct on: 07775623464 or email us at: firstname.lastname@example.org