Demilitarization Protective Ensemble

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A worker wearing a DPE suit Demilitarization Protective Ensemble closeup.png
A worker wearing a DPE suit
Two workers in DPE suits perform maintenance work at the Newport Chemical Agent Disposal Facility. Performing maintenance work in DPE suits at NECDF.jpg
Two workers in DPE suits perform maintenance work at the Newport Chemical Agent Disposal Facility.

The Demilitarization Protective Ensemble (DPE) is a heat-sealed, one-time-use positive pressure personnel suit.

Positive pressure personnel suit

Positive pressure personnel suits (PPPS) — or positive pressure protective suits, informally known as "space suits", "moon suits", "blue suits", etc. — are highly specialized, totally encapsulating, industrial protection garments worn only within special biocontainment or maximum containment (BSL-4) laboratory facilities. These facilities research dangerous pathogens which are highly infectious and may have no treatments or vaccines available. These facilities also feature other special equipment and procedures such as airlock entry, quick-drench disinfectant showers, special waste disposal systems, and shower exits.

These airtight suits are used by the U.S. Army Chemical Materials Agency to provide the highest level of protection against chemical agent exposure for workers accessing areas of chemical weapon disposal plants where chemical weapons are disassembled and the agent destroyed. Workers at Pine Bluff Chemical Agent Disposal Facility and other disposal sites have successfully completed tens of thousands of entries into these areas wearing DPE suits. [1]

Chemical weapon Device that uses chemicals to harm or kill people

A chemical weapon (CW) is a specialized munition that uses chemicals formulated to inflict death or harm on humans. According to the Organisation for the Prohibition of Chemical Weapons (OPCW), "the term chemical weapon may also be applied to any toxic chemical or its precursor that can cause death, injury, temporary incapacitation or sensory irritation through its chemical action. Munitions or other delivery devices designed to deliver chemical weapons, whether filled or unfilled, are also considered weapons themselves."

With supporting equipment, the suit weighs about 50 pounds. [1] Donning the suit takes between 30 and 45 minutes, with the assistance of a team of dressers. [2]

The suit's primary air supply comes through a hose connection to purified air; a self-contained breathing apparatus provides 8 to 10 minutes of escape air in case the primary supply is disrupted. A heart monitor around the wearer's chest checks for signs of distress. [1]

Self-contained breathing apparatus Emergency breathing air supply system carried by the user

A self-contained breathing apparatus (SCBA), sometimes referred to as a compressed air breathing apparatus (CABA) or simply breathing apparatus (BA), is a device worn by rescue workers, firefighters, and others to provide breathable air in an immediately dangerous to life or health atmosphere (IDLH). When not used underwater, they are sometimes called industrial breathing sets. The term self-contained means that the breathing set is not dependent on a remote supply. If designed for use under water, it is called SCUBA.

The suit's gloves have three layers, with thick butyl rubber gloves as the top layer, and the feet of the one-piece suit slip into butyl rubber boots that are then sealed to the suit. [1]

Butyl rubber

Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, but has two methyl groups substituted on every other carbon atom, rather than one. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor.

A radio transmitter provides contact with emergency backup personnel, the control room and other support staff. [1]

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Nerve agents, sometimes also called nerve gases, are a class of organic chemicals that disrupt the mechanisms by which nerves transfer messages to organs. The disruption is caused by the blocking of acetylcholinesterase, an enzyme that catalyzes the breakdown of acetylcholine, a neurotransmitter.

Chemical warfare Using poison gas or other toxins in war

Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons. This type of warfare is distinct from nuclear warfare and biological warfare, which together make up NBC, the military acronym for nuclear, biological, and chemical, all of which are considered "weapons of mass destruction" (WMDs). None of these fall under the term conventional weapons which are primarily effective due to their destructive potential. In theory, with proper protective equipment, training, and decontamination measures, the primary effects of chemical weapons can be overcome. In practice, they continue to cause much suffering, as most victims are defenseless civilians. Many nations possess vast stockpiles of weaponized agents in preparation for wartime use. The threat and the perceived threat have become strategic tools in planning both measures and counter-measures.

Bomb disposal Activity to dispose of and render safe explosive munitions and other materials

Bomb disposal is an explosives engineering profession using the process by which hazardous explosive devices are rendered safe. Bomb disposal is an all-encompassing term to describe the separate, but interrelated functions in the military fields of explosive ordnance disposal (EOD) and improvised explosive device disposal (IEDD), and the public safety roles of public safety bomb disposal (PSBD) and the bomb squad.

Dry suit Watertight clothing that seals the wearer from cold and hazardous liquids

A dry suit or drysuit provides the wearer with environmental protection by way of thermal insulation and exclusion of water, and is worn by divers, boaters, water sports enthusiasts, and others who work or play in or near cold or contaminated water. A dry suit normally protects the whole body except the head, hands, and possibly the feet. In hazmat configurations, however, all of these are covered as well.

Hazmat suit protective suit against chemical, bacteriological, and nuclear risks

A hazmat suit, also known as decontamination suit, is a piece of personal protective equipment that consists of an impermeable whole-body garment worn as protection against hazardous materials. Such suits are often combined with self-contained breathing apparatus (SCBA) to ensure a supply of breathable air. Hazmat suits are used by firefighters, emergency medical technicians, paramedics, researchers, personnel responding to toxic spills, specialists cleaning up contaminated facilities, and workers in toxic environments.

MOPP (protective gear)

MOPP is protective gear used by U.S. military personnel in a toxic environment, e.g., during a chemical, biological, radiological, or nuclear (CBRN) strike:

ILC Dover American company

ILC Dover, LP is an American special engineering development and manufacturing company based in Frederica, Delaware. ILC specializes in the use of high-performance flexible materials, serving the aerospace, personal protection, and pharmaceutical industries.

United States Army Chemical Materials Activity

The United States Army Chemical Materials Activity (CMA) is a separate reporting activity of the United States Army Materiel Command (AMC). Its role is to enhance national security by securely storing the remaining U.S. chemical warfare materiel stockpiles, while protecting the work force, the public and the environment to the maximum extent.

Pine Bluff Chemical Activity is a subordinate organization of the United States Army Chemical Materials Agency located at Pine Bluff Arsenal in Pine Bluff, Arkansas. The U.S. Army stored approximately twelve percent of its original chemical weapons at the Pine Bluff Arsenal since 1942. Destruction of the last chemical weapons occurred on November 12, 2010.

Pueblo Chemical Depot

The Pueblo Chemical Depot is a chemical weapons storage site located in Pueblo County, Colorado, United States. The Pueblo Chemical Depot is one of the last two sites in the United States with chemical munitions and chemical material. The Pueblo Chemical Agent Destruction Pilot Plant (PCAPP) which is under the Assembled Chemical Weapons Alternatives (ACWA) program will destroy its stockpile of 155-mm and 105-mm artillery shells and 4.2-in. mortars, all of which contain a form of the chemical agent mustard.

Blue Grass Army Depot (BGAD) is a U.S. Army storage facility for conventional munitions and chemical weapons. The facility is located in east central Kentucky, southeast of the cities of Lexington and Richmond, Kentucky. The 14,494-acre (58.66 km2) site, composed mainly of open fields and wooded areas, is used for munitions storage, repair of general supplies, and the disposal of munitions. The installation is used for the storage of conventional explosive munitions as well as assembled chemical weapons. The depot primarily is involved in industrial and related activities associated with the storage and maintenance of conventional and chemical munitions.

Bomb suit

A bomb suit, Explosive Ordnance Disposal (EOD) suit or a blast suit is a heavy suit of body armor designed to withstand the pressure generated by a bomb and any fragments the bomb may produce. It is usually worn by trained personnel attempting bomb disposal. In contrast to ballistic body armors, which usually focus on protecting the torso and head, a bomb suit must protect all parts of the body, since the dangers posed by a bomb's explosion affect the entire body.

Johnston Atoll Chemical Agent Disposal System

Johnston Atoll Chemical Agent Disposal System (JACADS) was the U.S. Army's first chemical munitions disposal facility. It was located on Johnston Island, at Johnston Atoll and completed its mission and ceased operation in 2000.

Throughout history, chemical weapons have been used as strategic weaponry to devastate the enemy in times of war. After the mass destruction created by WWI and WWII, chemical weapons have been considered to be inhumane by most nations, and governments and organizations have undertaken to locate and destroy existing chemical weapons. However, not all nations have been willing to cooperate with disclosing or demilitarizing their inventory of chemical weapons. Since the start of the worldwide efforts to destroy all existing chemical weapons, some nations and terrorist organizations have used and threatened the use of chemical weapons to leverage their position in conflict. Notable examples include the use of such weapons by Iraq’s Saddam Hussein on the Kurdish village Halabja in 1988 and their employment against civilian passengers of the Tokyo subway by Aum Shinrikyo in 1995. The efforts made by the United States and other chemical weapon destruction agencies intend to prevent such use, but this is a difficult and ongoing effort. Aside from the difficulties of cooperation and locating chemical weapons, the methods to destroy the weapons and to do this safely are also a challenge.

267th Chemical Company

The 267th Chemical Company was a military unit of the U.S. Army Chemical Corps responsible for the surety of chemical warfare agents dubbed "RED HAT" deployed to the Islands of Okinawa, Japan and subsequently Johnston Atoll in the Pacific Ocean. A recently discovered Army document reveals that the true mission of the 267th Chemical Company was the operation of the Okinawa deployment site as part Project 112. Project 112 was a 1960s biological warfare field test program that was conducted by the Deseret Test Center. Okinawa is not listed as a test site under Project 112 by the U.S. Department of Defense.

Racal suit

A racal suit is a protective suit with powered air-purifying respirator (PAPR). It consists of a plastic suit and a battery-operated blower with HEPA filters that supplied filtered air to a positive-pressure hood. Racal suits were among the protective suits used by Aeromedical Isolation Team (AIT) to evacuate patients with highly infectious diseases for treatment.

Hazmat diving Underwater diving in a known hazardous materials environment

Hazmat diving is underwater diving in a known hazardous materials environment. The environment may be contaminated by hazardous materials, the diving medium may be inherently a hazardous material, or the environment in which the diving medium is situated may include hazardous materials with a significant risk of exposure to these materials to members of the diving team. Special precautions, equipment and procedures are associated with hazmat diving.

References

  1. 1 2 3 4 5 "Fact Sheet: Suiting up for Safety". U.S. Army Chemical Materials Agency. Archived from the original on 2015-09-23. Retrieved 2014-08-25.
  2. "Entry Support Area Tenders Keep Workers Safe". Program Executive Office, Assembled Chemical Weapons Alternatives. Archived from the original on 2014-08-26. Retrieved 2014-08-25.

PD-icon.svg This article incorporates  public domain material from websites or documents ofthe United States Army .