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PersonalProtectiveEquipment12.ppt
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Personal Protective Equipment

Introduction

  • Personal Protective Equipment (PPE) should be selected to protect individuals from exposure to biological, chemical, and physical hazards.
  • PPE includes respiratory protection, protective clothing, and hearing protection.

PPE Selection Criteria

  • PPE should be selected based on hazard types and concentrations, site conditions, activities to be performed, routes of potential exposure and the limitations of each type of equipment.

PPE Program

  • A comprehensive PPE Plan should be part of the HASP.
  • OSHA requirements of a PPE Program include:
  • Selection criteria
  • Description of use and limitations
  • Duration of work allowed for specific PPE ensembles
  • Procedures for regular inspection, cleaning, maintenance, and storage of PPE

PPE Program

  • OSHA requirements(cont.):
  • Decontamination procedures and disposal methods for contaminated PPE
  • Training on proper fitting, use and limitations of PPE
  • Guidance on wearing and removing PPE
  • Evaluation of program effectiveness
  • Limitations of PPE due to external or medical conditions

PPE Selection

  • The selection of chemical protective clothing is not an easy task.

  • Appropriate selection and protection depends on an accurate evaluation of the hazards at each response site.

Chemical Protective Clothing

  • The selection process for choosing protective clothing consists of:
  • Type of environment for work tasks
  • Physical, chemical and toxicological properties of each chemical of concern
  • Dermal hazards associated with the chemicals
  • Clothing with the least permeation and degradation for the longest time
  • Encapsulating suit or non-encapsulating suit

Chemical Protective Clothing

  • Fully encapsulating suits are one-piece suits that completely covers the worker.
  • This type of suit, if made from the right type of materials, offers the highest level of protection.

Chemical Protective Clothing

  • Performance requirements that should be considered when selecting CPC include
  • Chemical resistance
  • Durability
  • Flexibility
  • Temperature resistance
  • Service life
  • Shelf life
  • Ease of decontamination
  • Color
  • Size
  • Cost

Chemical Protective Clothing

  • Suit materials should be chosen on the basis of permeation, degradation, and penetration characteristics.
  • Permeation: Process by which a chemical dissolves in and/or moves through the protective suit material on a molecular level.

Chemical Protective Clothing

  • Degradation is the loss or change in the material’s chemical resistance or physical properties due to chemical exposure, use or ambient conditions.
  • Penetration is the movement of a chemical through zippers, seams, or pinholes.

Chemical Permeation

  • Permeation can be affected by several factors:

  • Contact Time
  • Concentration
  • Temperature
  • Physical state of the contaminant

Chemical Resistance

  • There is no protective material that is impermeable.
  • There is no material that provides protection against all chemicals.
  • For certain contaminants or mixtures of contaminants, there are no materials that provides more than one hour of protection after initial contact.

Head Protection

  • Head protection should be worn during all site activities to prevent injury from falling debris or operational equipment.
  • Headgear must meet OSHA requirements (29CFR 1910.135).

Face Shields

  • Shields should be long enough to cover the entire face and provide protection against flying debris, dusts, splashes, and light.
  • Shields are a secondary protection barrier.
  • Safety glasses should be worn as primary protection.
  • Face shields do not protect against gases or vapors.

Hand Protection

  • Glove materials should be made of the same materials as protective suits.
  • Chemical protective gloves are often worn over latex or vinyl gloves and covered by a leather, cotton or wool glove.
  • The outer gloves offer no protection from chemical exposures.

Safety Footwear

  • Safety footwear that has a steel toe, steel shank, and a slip-resistant sole should be work by responders.
  • Leather work boots offer no chemical resistance and cannot be decontaminated.
  • An over boot made with chemical resistant material should be worn if leather boots are used by site workers.

Hearing Protection

  • Hearing protection should be worn by site workers from excess noise exposure.
  • There are two basic types of hearing protection:
  • Those that insert
  • Those worn over the ear.