SOP Title: Pressure Differential Monitoring
- Objective:
To lay down a procedure for monitoring of Pressure Differential within the facility to control the flow of the air.
- Scope:
This procedure is applicable for monitoring of pressure differential in the critical areas in Production, Warehouse and Quality Control Laboratory.
- Responsibility:
3.1 Concerned Department: To follow the procedure laid down and ensure that the area is maintained with the defined differential pressure.
3.2 Engineering Department: To check, verify and ensure that all the Magnehelic Gauges are working properly.
3.3 Quality Assurance Department: To review and approve the SOP. To ensure compliance of the SOP.
- Accountability:
Head Concerned Department and Head Quality Assurance Department.
- Procedure:
- Definitions:
5.1.1 Pressure Differential: Pressure Differential is the difference in air pressure between two cubicles/areas which is connected and measured by the Magnehelic Gauge.
5.2 Procedure:
| 5.2.1 | Instrument Used | |
| 5.2.1.1 | Magnehelic Gauge | |
| 5.2.2 | Ensure that the Magenehelic Gauge is within the calibration validity state and working properly. | |
| 5.2.3 | Ensure that the area is supplied with the desired airflow and respective AHU system is in operation for at least five minutes. | |
| 5.2.4 | Ensure that all the doors are closed properly and there is no movement across the doors during pressure differential recording. | |
| 5.2.5 | Record the pressure differential reading /value as indicated by the needle of the Magnehelic Gauge in specified format as mentioned in Annexure as applicable to particular area. | |
| 5.2.6 | Ensure that the pressure differential is well within the defined limit. | |
| 5.2.7 | Frequency | |
| 5.2.7.1 | Pressure differential shall be monitored twice a shift i.e. at about 09:00 Hrs and 15:00 Hrs. If there is no activity pressure differential shall be monitored once a shift. | |
| 5.2.8 | In case of non compliance of pressure differential specification, it shall be immediately reported to the Concerned Department Head and Corrective Action shall be taken. |
- Abbreviation:
| Abbreviation | Expansion |
| SOP | Standard Operating Procedure |
| QAD | Quality Assurance Department |
| UTL | Utility |
| i.e. | Id Est (That is) |
| NLT | Not Less Than |
| NMT | Not More Than |
| mm | Millimetre |
| AHU | Air Handling Unit |
| Hrs | Hours |
*Note – Ready to use SOP available in “DOWNLOAD” Section.