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Chapter 6 - Containment and Personal Protective Equipment (PPE)
Lesson 4 - Personal Protective Equipment (PPE)
Chapter 6 - Containment and Personal Protective Equipment (PPE)
Lesson 1
Overview of Containment
Lesson 2
Limited Containment
Lesson 3 Full Containment
Lesson 4
Personal Protective Equipment (PPE)
The primary function of personal protective equipment (PPE) is to limit mold exposure.
If a remediation job disturbs mold, and mold spores then become airborne, the risk of respiratory exposure increases. Actions likely to stir up mold include breaking moldy porous materials such as wallboard, using invasive procedures to examine or remediate mold growth in wall cavities, stripping or peeling wallpaper to remove it, and using fans to dry items.
Gloves
Gloves protect the skin from contact with mold. They also protect the skin from potentially irritating cleaning solutions. Long gloves that extend to the middle of the forearm are recommended.
The material from which gloves are made should be suited to the type of materials being handled. If you choose to use a biocide, such as chlorine bleach, or a strong cleaning solution, gloves should be made from natural rubber, neoprene, nitrile, polyurethane, or polyvinylchloride (PVC). If a mild detergent is being used, ordinary household rubber gloves are suitable. The routine use of biocides is not recommended. (For more information on the use of biocides in mold remediation, see Lesson 7 of Chapter 1.)
Goggles
Properly fitted goggles or full-face respirators provide eye protection. Goggles must be designed to keep out dust and small particles. Safety glasses or goggles that have open vent holes are not acceptable.
Respirators
Personal Protective Equipment (PPE)
- Minimum: Gloves, N-95 respirator, goggles/eye protection
- Limited: Gloves, N-95 respirator or half-face respirator with HEPA filter, disposable overalls, goggles/eye protection
- Full: Gloves, disposable full body clothing, head gear, foot coverings, full-face respirator with HEPA filter
Respirators protect remediation workers from inhaling airborne mold, mold spores, and dust. Three types of respiratory protection are described: minimum, limited, and full. Only respirators approved by the National Institute for Occupational Safety and Health (NIOSH) should be worn during mold remediation. These respirators must be used according to any applicable Occupational Safety and Health Administration (OSHA) regulations.
Use minimum PPE when cleaning up a small area affected by mold (less than 10 square feet total). Minimum PPE includes gloves, goggles/eye protection and an N-95 respirator. An N-95 respirator covers the nose and mouth, filters out 95 percent of airborne particulates, and is available in most hardware stores. It does not provide eye protection.
Limited PPE includes the use of half-face or full-face air purifying respirators (APRs) equipped with P100 filter cartridges. These respirators have inhalation and exhalation valves that filter the air and ensure it is free of mold particles. The P100 filters do not remove vapors or gases, and the half-face APRs do not protect the wearer's eyes. Limited PPE may be warranted when the total surface area affected by mold is between 10 and 100 square feet. Professional judgment should be used to make the final determination about whether to wear limited PPE.
Full PPE includes a full-face, powered air purifying respirator (PAPR). It is recommended when more than 100 square feet of mold is found, when high levels of airborne dust or mold spores are likely, or when intense or long-term exposures are expected. A powered air purifying respirator uses a blower to force air through a P100 filter. The filtered air is supplied to a mask that covers the wearer's face or a hood that covers the entire head. Positive pressure within the hood prevents unfiltered air from entering through penetrations or gaps. Individuals must be trained to use their respirators before they begin remediation.
Disposable clothing is recommended for medium and large remediation projects. It prevents the transfer and spread of mold to clothing and eliminates skin contact with mold. When limited protection is warranted, disposable paper coveralls can be used. When full protection is required, a body suit of breathable material, such as TYVEK ®, and mold-impervious disposable head and foot coverings should be used. All gaps, such as those around ankles and wrists, should be sealed. (Many remediators use duct tape to seal clothing.)
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