- Slides: 48
Technical Decon & PPE • Review the PPE Section • Review the Level B&C Donning and Doffing • Review the Technical Decontamination
Technical Decon PPE • When an Entry team is in Level A or B suits • Ops Level should be one level lower; – you will be required to don a non-encapsulating Level B or C suit – SCBA worn on the outside
Snohomish Count HAZ/MAT Team Approach to PPE • To provide protection in event of a chemical, biological, radiological, and/or nuclear (CBRN) event – Operations Level Fire Responders will be issued PPE appropriate for job functions, i. e. decon, support, etc.
Who needs PPE and Training • All First Responders designated as part of the emergency response to a chemical agent release • All persons who anticipate being active in potentially hazardous environments • Regular drills and training sessions designed to maintain familiarity with equipment should be incorporated into emergency response protocols
What is ppe? • Personal Protective Equipment (PPE) – things worn to protect wearer from harmful contaminants in the environment • Main function of PPE is to provide a shield – between worker and agent-contaminated environment – To be effective it must prevent the First Responder from being contaminated by airborne or surface agents
4 levels of ppe • • Level A Level B Level C Level D
Level A “Total Vapor Protection” • • • The product involved has been identified as one whose properties require the highest level of protection for skin, eyes, and the respiratory system Operations and response functions involve high potential for splash, immersion or exposure to unexpected vapors, gases, or particulates of materials highly toxic to the skin Substances with a high degree of hazard to the skin are known or suspected to be present, and skin contact is possible Operations must be conducted in confined, poorly ventilated areas until the absence of substances requiring level A protection is determined Unknown substance release
Level B “High Level of Respiratory Protection Needed” • The type and atmospheric concentration of toxic substance has been identified and requires a high level of respiratory protection, but less skin protection than Level A. These would be atmospheres with concentrations that exceed their IDLH, but does not represent a severe skin hazard • The atmosphere contains less then 19. 5% oxygen • It is highly unlikely that response activities will generate high concentrations of vapors, or splashes of material that will affect the skin of response personal
Level C “Keep Clean and use your PAPR” • The atmospheric contaminants, liquid splashes, or other direct contact may adversely affect or be absorbed through any exposed skin • The types of air contaminants have been identified, concentrations measured, and an airpurifying respirator is available that can remove the contaminants • All criteria for the use of PAPR are met
Level D “Bunker Gear” • Selected when the atmosphere contains no known hazards • Work functions preclude splashes, immersion, or the potential for unexpected inhalation of or contact with hazardous levels of any chemicals • Structural firefighting gear or uniform
SC HAZ/MAT - Level B PPE • • • SCBA Level “B” Suit Boots Inner gloves Outer Gloves Yellow Chem-Tape
Remove Watches, Jewelry, etc • Remove items that restrict movement • Remove items that may puncture the suit • Remove items that you don’t want decontaminated.
Hydrate • Suits get very warm • You can over heat even on cooler days • Drink Water • No soda, sport drinks or caffeine
De-Hydrate • As possible, as necessary, with delaying efforts
Donning level B- non encapsulated STEP 1 • Pre-entry briefing • Medical monitoring • Meter Cockpit
Donning level B & C Non-Encapsulated Suit STEP 2 • While seated, pull on the suit to waist level • Pull on the over boots • Pull the suit legs over the boots
Donning level B & C Non-Encapsulated Suit STEP 3 • Don the gloves
Donning level b & C Non-Encapsulated Suit STEP 4 • With assistance, complete donning the suit by placing both arms in the suit and pulling the suit over shoulders • Instruct the assistant to close the suit by closing the zipper and sealing the splash flap
Donning level B & C Non-Encapsulated Suit STEP 5 • Don the SCBA and face piece, do not connect the regulator to the face piece • With assistance, pull the hood over the head and face piece
Donning level B & C Non-Encapsulated Suit STEP 6 • Don outer gloves and pull the sleeves over the gloves • Instruct the assistant to tape sleeves and gloves at the wrists • Instruct the assistant to connect the regulator to the face piece
COMPLETED LEVEL B & C ENSEMBLE
Doffing level B & C Non-Encapsulated Suit STEP 1 • After completing decontamination, proceed to the clean area for suit doffing • Stand doff the SCBA while keeping the face piece in place
Doffing level B& C Non-Encapsulated Suit STEP 2 • Use gloved hands to unzip suit and remove from shoulders • Gently shake to release suit • Keep the outer gloves on “Outer” suit
Doffing level B & C Non-Encapsulated Suit STEP 3 • Remove hand from outer glove • Gently shake hand to free glove • Use inner gloves on “inner” suit • Peel down like a banana
Doffing level B & C Non-Encapsulated Suit STEP 4 • Sit down and instruct the assistant to complete rolling down the suit to the ankles • Step out of the boots and the suit
Doffing level B & C Non-Encapsulated Suit STEP 5 • Stand doff the SCBA face piece last
Doffing level B & C Non-Encapsulated Suit STEP 6 • Carefully peel the inner gloves away from the clean area • Go to the rehab area for medical monitoring, rehydration, and personal decon shower
Heat stress factors • PPE restricts heat loss mechanisms because of low permeability to water vapor • Amount of heat accumulation depends upon – amount of physical activity – level of hydration – clothing worn – load carried – state of heat acclimatization – Fatigue – terrain and Weather
Psychological factors • Wearing full PPE reduces ability to see and hear clearly • Makes it more difficult to recognize and communicate with others • Creates or increases feelings of isolation and confusion • Causes frustration in many, and claustrophobia in others • Experience in wearing and exercising in PPE can reduce these factors
Performance in PPE • Firefighters wearing PPE will take about 1. 5 times longer to perform most tasks • Performance is affected by stress in a variety of ways: – reaction and decision times are longer – routine tasks are completed more slowly – errors of omission are more common • Use the buddy system, a buddy can check for signs of stress and fatigue • Critical jobs should be shared and work should be double-checked
Cold Stress factors • Can directly affect an individual’s health and performance while wearing PPE • Can lower body temperature, resulting in cold injuries and impaired performance • Often accompanied by wind, rain, snow and ice, which can worsen the effects of cold • Cold weather clothing and PPE may be difficult to integrate
Technical decon • The Technical Decon unit will arrive on your scene and they will need your assistance in setting up and operating the Decon line. If the Entry team is in Level A or B suits you will be required to don a Non-Encapsulating (SCBA worn on the outside) Level B or C suit.
Technical Decon • Technical Decontamination – This is the highest level of decontamination available in the field. Technical decontamination is under the direction of the Haz-Mat Group Supervisor (Radio call: Haz-Mat Group Supervisor) and Decon Officer (Radio call: Tech Decon) • Three-stage operation consisting of: – Gross decontamination shower – Primary decontamination – Secondary decontamination. • The second stage must be established as a minimum before any entry into the hot zone can commence.
Technical Decon corridor
LAYOUT GUIDELINES � First and foremost – Obtain the Technical Decon Layout diagram from the Haz-Mat unit(s) on scene.
GENERAL LAYOUT GUIDELINES � � Two (2) large ground tarps are placed on end to form the Decon Corridor. Working from the Exclusion Zone “Hot” toward the Support Zone “Cold” � � Erect two (2) decon basins with step grids inside, 8 feet apart. First basin closest to the hot zone shall have a collapsible shower assembled with water hose attached. This is the first stage aka: Gross Decontamination Shower Second basin has buckets of soap/solution, brushes, and hand sprayers. Be sure to turn off water when not needed to conserve run-off.
Gross Decon Shower and BASIN
GENERAL LAYOUT GUIDELINES Cont. � Following the basins shall be a doffing area. � � Establish water supply � � � Chairs or benches, two (2) trash cans and bucket for hand washing. 2 -1/2” supply from apparatus or hydrant Utilize the multi-port manifold to supply garden hoses. Personal Shower Setup: � � Zumro inflatable tent with water heater for personal showering. This shall be setup at the discretion of Tech Decon or Haz-Mat Group Supervisor.
Zumro set up � Final destination for Decon Corridor. � � Placed at entry to the Support “Cold” Zone. Decon Personnel shall inflate Zumro tent from SCBA cylinder or air pump.
Zumro shower and dress
GROSS DECON SHOWER PROCEDURES � � � Have member fully rinse off while rotating under the shower a full 360 degrees. Special attention given to the hands, under arms and soles of the boots. Assistance may be needed while the technician walks to the next basin. Try to minimize contact with the technician if possible.
PRIMARY DECON (Scrub and Rinse) � � � After the technician has finished the gross shower he/she will enter the Primary Decon basin. Decon Personnel will now scrub and rinse the Technician with prescribed solution(s). Begin washing at the top of the head working downward. Special attention given to the hands, under arms and soles of the boots. If a Technician knows they have been contaminated they will point to a specific location which means to wash this area extra thoroughly. Technicians are trained to follow Decon Personnel’s instructions…they will follow your directions such as, "raise your arms or lift your foot”.
DOFFING AND SCBA drop � Assist Technician with suit removal. � � � � Decon Personnel shall only touch the outside of the suit and the Technician shall only touch the inside. Decon Personnel will fully open suit closures and remove hood toward the back. Technician will pull arms out of suit with gloves still attached to the suit. Decon Personnel will fold the suit to the ankles folding the suit toward the outside (inside out). Technician will step out of suit and then the suit is disposed of into trash can. Decon Personnel will assist with removing of the regulator and complete SCBA and placed on the tarp. Remove SCBA mask and inner gloves by rolling inside out and dispose. Technician will now enter Zumro or designated dressing area. � � Tyvek coveralls and towels shall be given to Technicians at this point. Technicians will bag clothing and personal artifacts then proceed to Medical.
End of the line • After decontamination of the entry team(s) personnel staffing Technical Decon MUST decontaminate themselves by proceeding through the decontamination corridor.
Company Level Training Opportunity!!! • Find out what your dept. SOPs are for Haz. Mat/Spill Response • Find a Level B “training” suit • Practice Donning, performing a simple task and then appropriately doffing the suit.
THE END Presentation shared by Snohomish County Fire District 1