Lecture 3: PPE Flashcards
Objectives
-essential components of HAZMAT scene safety
superfund amendment and reauthorization act (SARA) 1986
- superfund amendment and reauthorization act (SARA) 1986- in the past we knew hazardous things were bad but this act made OSHA responsible for it
- hazardous waste operations and emergency response (HaxWOPER) 1990
initial scene assessment
- scene assessment and/or size up
- incident
- possible consequences
- WMD (weapons of mass destruction) and/or terrorist indicators
- physical factors such as weather, wind, temperature, buildings, infrastructure, method of dissemination
- what you do in the beginning can affect the situation immensely
TRACEM
Emergency responders contend with the following potential health risks4 from hazardous materials. Thermal, Radiological, Asphyxiation, Chemical, Etiological, or Mechanical
-quiz*
standard Hazmat objectives
- isolate incident
- set up zones
- public protection
- product identification / resource - rescue
- decontamination
- treatment / transport
- avoid secondary contamination
expansion ratio
- a description of the volume increases that occurs when a compressed liquified material changes to gas
- can be dangerous when steam expands into the scene
gas contained in a tank
- great potential for danger
- flammable
- exposure + toxic = health hazard
- BLEVE
BLEVE
-boiling liquid expanding vapor explosion
acute exposure
- an immediate exposure
- may occur during an emergency response
- acute effects usually occur rapidly as a result of short term exposures and are of short duration
chronic exposure
- low exposure repeated over time
- chronic effects generally occur as a result of long term exposure and are of long duration
medications
- there is always a therapeutic range and poison range
- dose = concentration x time
level A PPE
- most protective
- level A chemical protective clothing
- choose level A protection when you need the highest level of respiratory, skin, eye and mucous membrane protection
- not protected from heat or radiation
- SCBA- A NOISH-approved positive pressure (pressure-demand) self contained breathing apparatus (SCBA), or positive pressure supplied air respirator with escape SCBA
- positive pressure prevents outside air from coming in
- chemical suit- a fully encapsulating chemical protective suit
- gloves- chemical resistant gloves worn inside and outside of the suit
- boots- chemical resistant boots with steel toe and shank
level B PPE**
-choose level B protection when you need the highest level of respiratory protection but a lesser level of skin and eye protection
-Level B protection is the minimum recommended level on initial site entry.
-SCBA: A NIOSH-approved positive pressure (pressure-demand) self-contained breathing apparatus (SCBA), or
positive-pressure supplied-air respirator with escape SCBA.
● Chemical-Resistant Clothing: Includes overalls, long sleeved jacket, coveralls, hooded two-piece chemical splash suit and disposable chemical resistant coveralls.
● Gloves: Chemical-resistant gloves worn inside and outside of the suit.
● Boots: Chemical-resistant boots with steel toe and shank
level C PPE****
-choose level C protection when the type of airborne substance is known, concentration measured, criteria for using air purifying respirators met, and skin and eye exposure is unlikely
-respirator- full face or half mask NIOSH-approved air purifying respirator
-chemical resistant clothing- one piece coverall, hooded two piece chemical splash suit, chemical splash suit, chemical-resistant hood and apron, and disposable chemical-resistant coveralls.
● Gloves: Chemical-resistant gloves worn inside and outside of the suit.
● Boots: Chemical-resistant boots with steel toe and shank.
level D PPE
- general work outfit with glasses and gloves if required
- choose level D protection for nuisance contamination and requires only coveralls and safety shoes/boots
- base other PPE use such as gloves or eye protection on the situation
- works should not wear level D PPE on any site where respiratory or skin hazards exist
- along with keeping potential contaminants out
- level chemical protection can also keep possible contamination in, such as forensic investigators examining a crime scene
