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Module 4: Standardized Decontamination Procedures. Terminal Objective. At the end of this module the student will be able to describe the entire US&R decontamination process including the need for, types of, and the equipment required to perform decontamination. Enabling Objectives.
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Terminal Objective At the end of this module the student will be able to describe the entire US&R decontamination process including the need for, types of, and the equipment required to perform decontamination.
Enabling Objectives 4-1 Students will define decontamination 4-2 Students will identify the need for decontamination 4-3 Students will discuss the various types of decontamination 4-4 Student will Identify US&R decontamination equipment
Enabling Objectives (cont) 4-5 Students will describe staffing for the decontamination system 4-6 Students will describe the decontamination process
Overview • Decontamination theory • Standard plan • Provide protection to all • Hazmat Specialist coordinates DECON • Emergency DECON is four steps • DECON layout
Decontamination Theory Overview • Time consuming • Personnel and equipment intensive • For US&R personnel and rescued victims or as directed • Evidence preservation • Decon equipment provided to TFs is based on mission requirement
Working Definition of Decontamination A chemical and/or physical process to remove and prevent the spread of a contaminant.
Decontamination Prompt, safe, and effective decontamination protects against and reduces effects of exposure. Believe it or not, you have a role in this.
Decontamination Situations • Obvious contamination with known hazardous substance • Suspected contamination with a hazardous substance • Any likelihood of exposure to a hazardous substance • Prevent spread of contaminant • Environmental protection
Perform DECON by Priority • TF members and canines who are ill, symptomatic, or have compromised PPE • Rescued survivors • TF Members with intact PPE and canines who are asymptomatic
Decontamination Process • Hazmat Specialists supervise decontamination process • Primarily to protect Task Force • Decontamination is always confirmed with monitoring equipment • Survivor decontamination • Everyone goes through some level of decontamination • This provides protection against contamination spread to EMS, hospitals, etc.
Types of Decontamination • Emergency • Gross Decon • Field Decon Kit • Technical: • CPC • Personnel • Vehicles • Equipment • Canine
Emergency Decontamination • Fire Hose near point of Entry/Exit • Field Decontamination Kit • Design system per the mission
Technical Decon • Multi Step process • Gross Wash • Wash & Rinse • Doffing of CPC & Respiratory Equipment • Metering/Screening • Medical Assessment • Personal Shower
Technical Decontamination Equipment • Buckets, brushes, and soap • DECON solution and containment system • Dedicated water supply • Trash containers
Technical DECON Equipment (cont) • Electrical extension cords & water hoses • 500-600 gallon waste bladders • Run-off and waste water pumps • Gross DECON showers • Modular DECON Tent
Technical DECON Equipment (cont) • Canopies/Tents • Air space heater • Water Heater • Generators • Tube lighting • Work lights
Technical DECON Equipment, Cold Weather Use Tents with Sidewalls • Space heater • Hot water heater • Zippers for entrance and exit • May need a “Event Tent” if weather is severe to cover the entire corridor • IST or Local Jurisdiction Help
Technical DECON Equipment, Cold Weather Use Water Heater • Portable • 60°F to 105°F + at 16 gpm • Fuels - diesel, JP-4, JP-8, or kerosene • Solid state ignition - ignites when water flows • Onboard pressure reducing valve
Technical DECON Equipment, Cold Weather Use Forced Air Space Heater • Portable with wheels and handles • Provides breathable heated air -110,000 btu output, 850 cfm fan • Multi-fuel (kerosene, diesel, fuel oil, JP 4/8) • 16 hours on 1 tank of fuel
Specialized DECON Equipment • MERLIN foam generator • Hazmat Specialist can arrange for solutions as needed • Requires a 3 year service by manufacturer
Standardized DECON Staffing • DECON supervised by Hazmat Specialist • DECON positions filled by any available personnel • All Task Force members receive basic DECON training • Medical Specialist conducts Triage
Decontamination Supervisor • Responsible for final walkthrough of corridor • Ensures supplies are present • Addresses runoff containment • Ensures safe, efficient and effective operations
Medical DECON Liaison • Responsible for medical assessment and treatment • Liaison with DECON supervisor • Positioned to observe all persons leaving exclusion zone
When assigned to DECON • Don selected level of PPE/CPC • Operate in PPE/CPC • Establish operating time log • Setup and operate DECON line • Conduct triage • Communicate while in PPE
Standardized TF DECON Site Layout • Situated upwind from the exclusion zone • Locate uphill, drain toward exclusion zone or to side • Large enough to keep clean from contamination • Place heaters upwind and uphill to help avoid contamination • Plastic bags on hand to collect personal items
Canopy 10’ x 20” Tube light Medical & Rehab Tent Tube light Donning Tent Canopy 10’ x 20” 600 gal Waste Bladder Generator Generator Water Source Water Heaters Light DECON Setup Diagram Light Manifold Warm Water 3 Canopies 10’ x 20” 3 gpm Shower Sump Pump Tube Lights Sump Pump Personal Shower Tube light Doff Area DOFF Tent Redress Male Tube light Cold Water 3 gpm Shower Sump Pump Personal Shower Three lane modular scrub and rinse tent Tube light Gross Decon Redress Female DECON Tent DOFF Tent Gross DECON Showers w/1” inlets & 1 WW Pump Spill blocker dike SCBA Rinse Barrels Electrical Cold water Warm water Waste water Tube light Sump pump Waste barrel SCBA DECON SCBA Drop off and rehab Light Light
Decontamination process for PPE/CPC • Rinse, head to foot-Gross Wash • Scrub suit with brush, head to foot-wash/Rinse • Attend to heavily contaminated areas (hands, feet, front of suit) • Rinse again, head to foot • Assist member in removing CPC(Do not reach inside, roll CPC down from outside)
US&R Standard DECON Process • Step One – Gross DECON (Shower) • Step Two - Wash and Rinse • Modular pre-plumbed 3 lane shower • Step Three- Remove Outer Protection • Respiratory protection removed last • Meter to determine DECON efficiency • Medical Monitoring • Step Four – Personal Hygiene Shower
Step 1. Gross Decon • Rinse thoroughly in shower
Step 2. DECON Wash and Rinse • Scrub clean (helpers on hand) • Person spread arms and legs, rotate for cleaning
Step 2. DECON Wash and Rinse (cont) • Wash from top down • Assistants must DECON themselves before they leave corridor
Step 3. Remove Outer Protection • Remove CPC; not respiratory protection • Place CPC in container for disposal • Prevent cross contamination • Turn CPC inside out as it is removed • Peel CPC off rescuer without touching inside of CPC • Remove respiratory protection after leaving area
Step 4. Personal Hygiene • May be on or off site • Personnel must be clean before evacuation • Personal hygiene can range from hand washing to showering
Post DECON Monitoring • Personnel exiting DECON checked with monitoring instruments by Hazmat Specialists • If contaminants still present after removing CPC, or working in known contaminants, then personal hygiene is high priority
Post DECON Considerations • Medical Evaluation • Rehabilitation and replacement clothing • Reports and exposure logs • Hazmat tracking Documentation is Critical
Water Run Off Considerations • Berms • Sump Pumps • Water Bladders • Plastic Sheeting The EPA position on runoff states that you can avoid capturing waste water in an emergent life safety situation.
DECON Water Disposal • Collected water should be removed by an appropriate agency(s) or contractor • Ask for established policy as per • DECON Plan • IST • EPA
Summary • Decontamination theory • Standard plan • Provide protection to all • Hazmat Specialist coordinates DECON • Emergency DECON is four steps • DECON layout
Activity • Layout containment berms • Assemble tents and showers • Setup and operate water heater • Setup and operate space heater • Walk through DECON process