Does a P3 filter mean a respirator is TH3?

No. P3 describes the filter's efficiency, while TH3 describes the certified performance of the complete powered respirator. A device can use a P3 filter and still only be certified to TH2, because the TH rating depends on the whole system (blower, airflow, hose, headtop and filter) tested together, not the filter alone.

What is the difference between TH2 and TH3?

TH2 has an Assigned Protection Factor (APF) of 20 and TH3 has an APF of 40, so TH3 provides twice the protection of TH2 under EN 12941. TH2 is appropriate where a COSHH risk assessment shows exposure falls within its range. Many organisations choose TH3 for the extra headroom and flexibility across varied tasks.

What is the APF of a TH3 respirator?

A TH3 powered respirator has an Assigned Protection Factor (APF) of 40, meaning it is designed to be used in atmospheres up to 40 times the Workplace Exposure Limit, subject to a suitable risk assessment.

Is TH3 always the right choice?

Not automatically. The correct level of respiratory protection should always be determined by a suitable COSHH risk assessment. TH3 offers the highest certified protection under EN 12941, but a lower rating may be appropriate depending on the contaminant, concentration and task.

Do you need a face fit test for a TH3 powered respirator?

Loose-fitting powered respirators, including TH3 devices like the AirMask 1000, do not require face fit testing because they do not rely on a tight seal against the skin. This is different from tight-fitting masks (disposable, half and full-face), which legally require a face fit test for each wearer under HSE guidance.

Can you wear a TH3 powered respirator with a beard?

Yes. Because loose-fitting powered respirators do not seal against the face, they can be worn with beards, stubble and other facial hair. Tight-fitting masks cannot, because facial hair breaks the seal they depend on, so a loose-fitting powered respirator is often the only effective option for workers with beards.

Checking an SCBA Kit Before Use

Cires-Safe
Jun 26, 2023
1 min read

SCBA (Self-Contained Breathing Apparatus) plays a vital role in ensuring the safety of firefighters, industrial workers, and other professionals working in hazardous environments. Before using an SCBA, it is crucial to perform proper checks to ensure its functionality and reliability. In this Q&A blog, we will address ten common questions related to SCBA checks before use.

Q1. Why is it important to perform SCBA checks before use?

Answer: Performing SCBA checks before use is crucial for the safety and effectiveness of the user. It helps identify any potential issues or malfunctions that could compromise the user's respiratory protection, allowing necessary repairs or replacements to be made before entering a hazardous environment.

Q2. What are the basic components of an SCBA that should be checked?

The basic components of an SCBA that should be checked include the facepiece, regulator, pressure gauge, cylinder, straps, valves, and any additional integrated features such as a communication system or thermal imaging camera.

Q3. How often should SCBA checks be conducted?

SCBA checks should be conducted before each use, as well as during routine inspections and maintenance, as per the manufacturer's guidelines. Regular checks help ensure that the equipment is functioning properly and ready for immediate use.

Q4. What should be inspected on the facepiece?

When inspecting the facepiece, check for any cracks, tears, or deformities on the mask and ensure that the exhalation valve functions correctly. Verify that the lens is clear and undamaged, allowing for optimal visibility.

Q5. How can I test the regulator and pressure gauge?

To test the regulator, ensure that it attaches securely to the facepiece and allows for easy breathing. The pressure gauge should be accurate, indicating the remaining air supply in the cylinder. It is essential to verify that the regulator and gauge are properly calibrated.

Q6. What should I look for when inspecting the cylinder?

When inspecting the cylinder, check for any signs of damage, such as dents or corrosion. Ensure that the cylinder is properly connected and that the valve operates smoothly. It is also important to confirm that the cylinder is filled to the recommended pressure level.

Q7. How should I check the straps and harness system?

Inspect the straps and harness system for signs of wear, fraying, or damage. Verify that all buckles, clasps, and adjustments are in good working condition and secure properly. Proper fit and adjustment of the straps are crucial for user comfort and safety.

Q8. What are some additional features that might require checking?

Additional features such as integrated communication systems, thermal imaging cameras, or heads-up displays should be inspected to ensure they function correctly. Follow the manufacturer's instructions to test and verify the operation of these features.

Q9. Are there any specific regulatory requirements for SCBA checks?

Regulatory requirements for SCBA checks may vary depending on the industry and jurisdiction. It is essential to be familiar with relevant safety standards, regulations, and guidelines specific to your region or workplace. Consult with local authorities and follow manufacturer recommendations.

Q10. What should I do if I identify an issue during SCBA checks?

If you identify any issues or malfunctions during SCBA checks, remove the equipment from service and report it to the appropriate personnel. Follow the established protocols for maintenance, repair, or replacement of the faulty components. Never use a defective SCBA as it can compromise your safety.

Performing thorough SCBA checks before use is essential for the safety and well-being of professionals working in hazardous environments. By following the manufacturer's guidelines and conducting regular inspections, users can ensure that their SCBA is in proper working condition, providing reliable respiratory protection. Remember, a well-maintained SCBA can be a lifesaving tool when facing dangerous situations.