Air Filtration Unit (NPU)

Version: 1.0

Updated: 1 Dec 2024

Document Summary:

This Safe Work Procedure (SWP) outlines guidelines for the installation, operation, and maintenance of negative-pressure air filtration units (NPUs) to ensure safe and efficient use. It highlights key hazards, such as electrical risks, hazardous manual tasks, and exposure to contaminants, providing measures like using Residual Current Devices (RCDs) and securing stable, dry placement of the NPU. Proper sealing of connections and filters is emphasized to maintain filtration efficiency, along with the use of appropriate personal protective equipment (PPE) such as respiratory, eye, and hand protection during all phases of operation. Pre-start checks include verifying the integrity of seals, filter alignment, and system connections.

Operational procedures involve following manufacturer guidelines for start-up, monitoring pressure levels, and ensuring adjustments are made only by trained personnel. The document also details the safe replacement of pre-filters and HEPA filters, emphasizing the need for controlled conditions, correct disposal of hazardous materials, and thorough cleaning of equipment before servicing. Maintenance tasks require the unit to be powered down and handled by qualified service personnel to prevent exposure or contamination risks. The SWP underlines adherence to these protocols to mitigate risks and ensure compliance.

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