DIFFERENTIAL PRESSURE VERIFICATION STUDY

DIFFERENTIAL PRESSURE VERIFICATION STUDY
Objective:

To demonstrate the capacity of Air Handling Unit to maintain room pressure differentials within specified design limits.

Acceptance Criteria:

The room differential pressures shall meet the design values as set for each room as specified in table below.

Test Equipment:

Calibrated differential pressure gauge.

Procedure:

1.      Switch ON the AHU.
2.      The test period will be over 3 days.
3.      Measurement interval: Every day(3 times).
4.      AHU and the relevant process equipment where there is potential impact on room differential pressures are to be in continuous operation when performing these tests(where possible).
5.      To avoid unexpected changes in pressure and to establish a baseline, all doors in the facility must be closed and no traffic is to be allowed through the facility during the test.
6.      Ensure that one end of the first tube to the higher-pressure side of the magnehlic gauge is connected and other end of this tube in the area of lower pressure side is placed.
7.      Next, ensure that one end of the second tube to the lower pressure input side of the magnehlic gauge is connected and other end of this tube in the area of lower pressure side is placed.
8.      Record any comments arising from the Room Pressure Differential Test in the comment section, including details of all non-conformances discovered.

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