Portwest - Do You Know Booklet

DO YOU KNOW 45

WHAT IS EN 140:1999? THIS STANDARD SPECIFIES THE MINIMUM REQUIREMENTS FOR HALF MASKS AND QUARTER MASKS FOR USE AS PART OF RESPIRATORY PROTECTIVE DEVICES, EXCEPT ESCAPE APPARATUS AND DIVING APPARATUS

DEFINITIONS: Half Mask = A facepiece which covers the nose, mouth and chin Quarter Mask = A facepiece which covers nose and mouth

DESCRIPTION: They are intended to provide adequate sealing on the face of the wearer against the ambient atmosphere. Air enters the facepiece and passes directly to the nose and mouth area of the facepiece through inhalation valve(s). When breathing the exhaled air flows to the ambient atmosphere via the exhalation valve(s) of the mask.

KEY TESTS

3. BREATHING RESISTANCE The breathing resistance of the facepiece when tested with a breathing machine shall not exceed » 2.0 millibar for inhalation » 3.0 millibar for exhalation This test ensures breathing is comfortable when wearing the facepiece. 4. INWARD LEAKAGE When the facepiece is correctly tted, the % of the ambient atmosphere outside the facepiece which is allowed to pass though the facepiece will not be greater than 2%. This test ensures the masks o ers e ective protection. FILTERS

1. RESISTANCE TO TEMPERATURE The masks are conditioned for 24h at 70°C and then for 24h at room temperature +30°C. If the facepiece and its components show no appreciable deformation the result is a pass. 2. RESISTANCE TO FLAMMABILITY The standard describes the procedure to test the masks by exposing them to a direct ame. Parts of the facepiece that might be exposed to ame during use shall either not burn or continue to burn for more than 5 seconds after the ame is removed. Resistance to temperature and ammability tests make sure the mask will maintain its performance in extreme conditions of use.

P420

P410

To protect from toxic agents, masks need to be used with lters, which are covered in EN 143 for particulate lters and EN 14387 for gas and combined lters (gas and particulate).

P430

PORTWEST HAS 3 HALF MASKS P410, P420 & P430 CERTIFIED TO EN140