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Positive pressure personnel suit

January 01, 1970

For the pressurized garment worn by high-altitude pilots and astronauts, see Pressure suit. For the positive-pressure mask or hood, see Powered air-purifying respirator. For unpressurized protective garments, see Hazmat 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.

A CDC laboratorian dons an older-model PPPS before entering a Maximum Containment lab, or "suit lab".

The PPPS is a sophisticated variety of personal protective equipment (PPE), a type of hazmat suit, which is air-tight and designed for positive pressure to prevent contamination to the wearer even if the suit becomes damaged. BSL-4 cabinets and "Suit Laboratories" have special engineering and design features to prevent hazardous microorganisms from being disseminated into the outside environment. These biosafety suites, where PPPSs are used, are suites of laboratory rooms which are essentially equivalent to large Class III biosafety cabinets in which the interiors of the PPPSs serve as the "outside" environment for workers. Examples include the biocontainment suites at the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) at Fort Detrick, Maryland and the Maximum Containment Facility (MCF) of the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia.

Operation edit

 
Regular inspection of PPPS to locate any punctures or leaks[1]

Fresh, filtered air is typically supplied to the interior of a PPPS via overhead tubing. In addition to the physical barrier provided, the positive pressurization offers additional protection in the event of exposure through a defect or puncture in the suit, for if the suit's integrity is compromised, air will be forced out instead of being sucked in. Extensive training with the PPPS is required to safely pursue research in a PPPS within a biosafety facility.

In 1987, USAMRIID scientist Joel Dalrymple described the subjective experience of working in a PPPS and "his solemn respect for working in the hot suits" to a journalist:

"I don't want anyone to prep my suit," he says. "It is like packing your own parachute." Indeed, it is no picnic to do experiments weighted down with all that gear and paraphernalia. The air hisses so loudly you have to crimp the air supply to talk to your lab partner. The plastic eyeshield reflects the lightbulbs in the ceiling. Heat builds up. Fatigue sets in. You can't scratch or go to the bathroom. And all the time, there is the danger that you will slip and puncture your suit and infect yourself. After working in the hot suit, everyone showers and checks the suit, just to make sure that no tiny punctures turn up. "It's just instinct," says Dalrymple. "You come out, pull off your glove, blow it up and hold it. You've been working with needles all day. It is refreshing to see a glove that remains inflated."[2]

History edit

In the late 1970s, ILC Dover, LP, developed a special garment, the Demilitarization Protective Ensemble (DPE), to fulfill the U.S. Army's need for an off-the-shelf, positive pressure, totally encapsulating suit for use by maintenance personnel at a chemical weapons site. The DPE was delivered to the Army in 1979 and is still currently in daily use, with over 700 recorded entries into a "hot" environment and a perfect safety record. From the technology used in production of the DPE, ILC developed the Chemturion suit for use in commercial applications. Delta Protection, a subsidiary of French company Bacou-Dalloz, designed a Michelin Man-inspired suit in 2003, known in the United States at that time as French BSL 4 Suit.[3] In July 2007, the CDC purchased 30 Delta Protection suits to be used in BSL-4,[4] and called them "orange suits".[5][6] On August 20, 2007, Bacou-Dalloz became Sperian Protection.[7] The same suit design became part of Sperian Protection ventilated suits ("White Suits").[8] On September 15, 2010, Sperian Protection became part of Honeywell.[9] The product is now called Honeywell BSL 4 suits.[10] The Chemturion series is a series of multi-use, totally encapsulating PPPSs, currently used by Public Health Canada, Boston University, AI Signal Research, USAMRIID, the CDC, and many industrial companies such as DuPont, Dow, and Georgia Pacific.[11]

Examples edit

In fiction and film edit

PPPSs — along with many less elaborate types of hazmat suit — have long been a staple of the science fiction and thriller genres, where they are used to accentuate the drama of biohazard scenarios. Common dramatic (and generally unrealistic) situations involve a suit failure leading to rapid death in films such as Outbreak (1995). The wearing of a PPPS can underscore the villainy and "otherness" of movie bad guys as in E.T. the Extra-Terrestrial (1982). A recent, more sedate, example of PPPSs in a film is the Steven Soderbergh movie Contagion (2011).

In the Mass Effect series of video games, several types of aliens use variants of PPPSs, most notably the character Tali, who has a compromised immune system. In Moebius's comic Edena, the residents of the Nest City wear similar suits at all times to protect themselves from diseases, as do the denizens of Javecek in Carla Speed McNeill's comic Finder.[13][14] In Bethesda's Fallout games, the Hazmat Suit is an armor item which can be equipped on a character to prevent radiation damage. In Capcom's Resident Evil, at the very beginning of the "Mansion Incident", those inside Spencer Mansion were told to don PPPS after a viral outbreak within the facility.[15]

See also edit

 
Wikimedia Commons has media related to Positive pressure personnel suits.

References edit

  1. ^ Seligson, Susan (7 March 2013). "Video Offers Glimpse of Biosafety Level 4 Lab Science webcast "threads the NEIDL"". BU Today. Retrieved 5 December 2014.
  2. ^ McDermott, Jeanne (1987), The Killing Winds: The Menace of Biological Warfare; New York; Arbor House, pp 220-221.
  3. ^ Masibay, Kimberly (27 May 2003). "A Chic French Import Attracts U.S. Attention". Popular Science. Retrieved 5 December 2014.
  4. ^ "84 -- BSL-4 Protective Suit: Solicitation Number: Reference-Number-00HCVHDB-2007-45398". CDC. Retrieved 5 December 2014.
  5. ^ "PHIL # 10727". CDC. Retrieved 5 December 2014.
  6. ^ "PHIL # 10724". CDC. Retrieved 5 December 2014.
  7. ^ . Stanley. Archived from the original on 2014-12-09. Retrieved 5 December 2014.
  8. ^ (PDF). NanoSafe. 2008. Archived from the original (PDF) on 23 May 2013. Retrieved 5 December 2014.
  9. ^ . Sperian Protection. Archived from the original on 11 February 2011. Retrieved 5 December 2014.
  10. ^ "Product Family BSL 4". Honeywell. Retrieved 5 December 2014.
  11. ^ U.S. Army Chemical Materials Agency, Suiting up for Safety, Fact Sheet 2015-09-23 at the Wayback Machine. Retrieved on 2011-02-11.
  12. ^ Sperian Protection is now part of Honeywell; Sperian Group History
  13. ^ Giraud, Jean. Edena.
  14. ^ McNeill, Carla. Finder: Third World.
  15. ^ バイオハザード解体真書 (Game guide) (in Japanese). Japan: Enterbrain. 23 August 2002. p. 234. ISBN 9784757709805.

January 01, 1970
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For the pressurized garment worn by high altitude pilots and astronauts see Pressure suit For the positive pressure mask or hood see Powered air purifying respirator For unpressurized protective garments see Hazmat 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 A CDC laboratorian dons an older model PPPS before entering a Maximum Containment lab or suit lab The PPPS is a sophisticated variety of personal protective equipment PPE a type of hazmat suit which is air tight and designed for positive pressure to prevent contamination to the wearer even if the suit becomes damaged BSL 4 cabinets and Suit Laboratories have special engineering and design features to prevent hazardous microorganisms from being disseminated into the outside environment These biosafety suites where PPPSs are used are suites of laboratory rooms which are essentially equivalent to large Class III biosafety cabinets in which the interiors of the PPPSs serve as the outside environment for workers Examples include the biocontainment suites at the U S Army Medical Research Institute of Infectious Diseases USAMRIID at Fort Detrick Maryland and the Maximum Containment Facility MCF of the Centers for Disease Control and Prevention CDC in Atlanta Georgia Contents 1 Operation 2 History 3 Examples 4 In fiction and film 5 See also 6 ReferencesOperation editThis section needs expansion You can help by adding to it December 2011 nbsp Regular inspection of PPPS to locate any punctures or leaks 1 Fresh filtered air is typically supplied to the interior of a PPPS via overhead tubing In addition to the physical barrier provided the positive pressurization offers additional protection in the event of exposure through a defect or puncture in the suit for if the suit s integrity is compromised air will be forced out instead of being sucked in Extensive training with the PPPS is required to safely pursue research in a PPPS within a biosafety facility In 1987 USAMRIID scientist Joel Dalrymple described the subjective experience of working in a PPPS and his solemn respect for working in the hot suits to a journalist I don t want anyone to prep my suit he says It is like packing your own parachute Indeed it is no picnic to do experiments weighted down with all that gear and paraphernalia The air hisses so loudly you have to crimp the air supply to talk to your lab partner The plastic eyeshield reflects the lightbulbs in the ceiling Heat builds up Fatigue sets in You can t scratch or go to the bathroom And all the time there is the danger that you will slip and puncture your suit and infect yourself After working in the hot suit everyone showers and checks the suit just to make sure that no tiny punctures turn up It s just instinct says Dalrymple You come out pull off your glove blow it up and hold it You ve been working with needles all day It is refreshing to see a glove that remains inflated 2 History editThis section needs expansion You can help by adding to it December 2011 In the late 1970s ILC Dover LP developed a special garment the Demilitarization Protective Ensemble DPE to fulfill the U S Army s need for an off the shelf positive pressure totally encapsulating suit for use by maintenance personnel at a chemical weapons site The DPE was delivered to the Army in 1979 and is still currently in daily use with over 700 recorded entries into a hot environment and a perfect safety record From the technology used in production of the DPE ILC developed the Chemturion suit for use in commercial applications Delta Protection a subsidiary of French company Bacou Dalloz designed a Michelin Man inspired suit in 2003 known in the United States at that time as French BSL 4 Suit 3 In July 2007 the CDC purchased 30 Delta Protection suits to be used in BSL 4 4 and called them orange suits 5 6 On August 20 2007 Bacou Dalloz became Sperian Protection 7 The same suit design became part of Sperian Protection ventilated suits White Suits 8 On September 15 2010 Sperian Protection became part of Honeywell 9 The product is now called Honeywell BSL 4 suits 10 The Chemturion series is a series of multi use totally encapsulating PPPSs currently used by Public Health Canada Boston University AI Signal Research USAMRIID the CDC and many industrial companies such as DuPont Dow and Georgia Pacific 11 Examples editThe U S Army s Demilitarization Protective Ensemble The ILC Dover Chemturion Blue Suit The Delta Protection Orange Suit The Sperian Protection dead link White Suit 12 nbsp A BSL 4 laboratorian working in an ILC Dover Chemturion Blue Suit nbsp CDC microbiologists in Delta Protection Orange Suits nbsp Laboratorians working in Sperian Protection White Suit at NIAID BSL 4 lab nbsp Maintenance workers in DPE suits at the Newport Chemical Agent Disposal Facility In fiction and film editThis section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed August 2017 Learn how and when to remove this message PPPSs along with many less elaborate types of hazmat suit have long been a staple of the science fiction and thriller genres where they are used to accentuate the drama of biohazard scenarios Common dramatic and generally unrealistic situations involve a suit failure leading to rapid death in films such as Outbreak 1995 The wearing of a PPPS can underscore the villainy and otherness of movie bad guys as in E T the Extra Terrestrial 1982 A recent more sedate example of PPPSs in a film is the Steven Soderbergh movie Contagion 2011 In the Mass Effect series of video games several types of aliens use variants of PPPSs most notably the character Tali who has a compromised immune system In Moebius s comic Edena the residents of the Nest City wear similar suits at all times to protect themselves from diseases as do the denizens of Javecek in Carla Speed McNeill s comic Finder 13 14 In Bethesda s Fallout games the Hazmat Suit is an armor item which can be equipped on a character to prevent radiation damage In Capcom s Resident Evil at the very beginning of the Mansion Incident those inside Spencer Mansion were told to don PPPS after a viral outbreak within the facility 15 See also edit nbsp Wikimedia Commons has media related to Positive pressure personnel suits Racal suit a positive pressure suit with a battery operated blower for expeditionary use Demilitarization Protective Ensemble DPE a heat sealed one time use positive pressure personnel suit Pressure suit the pressurized garment worn by high altitude pilots and astronauts Hazmat suit unpressurized protective garment Fire proximity suit a suit designed to protect from extremely high temperatures Powered air purifying respirator the positive pressure mask or hood References edit Seligson Susan 7 March 2013 Video Offers Glimpse of Biosafety Level 4 Lab Science webcast threads the NEIDL BU Today Retrieved 5 December 2014 McDermott Jeanne 1987 The Killing Winds The Menace of Biological Warfare New York Arbor House pp 220 221 Masibay Kimberly 27 May 2003 A Chic French Import Attracts U S Attention Popular Science Retrieved 5 December 2014 84 BSL 4 Protective Suit Solicitation Number Reference Number 00HCVHDB 2007 45398 CDC Retrieved 5 December 2014 PHIL 10727 CDC Retrieved 5 December 2014 PHIL 10724 CDC Retrieved 5 December 2014 Stanley Personal Protection History Stanley Archived from the original on 2014 12 09 Retrieved 5 December 2014 Solutions to Protect People Against Particles PDF NanoSafe 2008 Archived from the original PDF on 23 May 2013 Retrieved 5 December 2014 Sperian Protection Historical Player Sperian Protection Archived from the original on 11 February 2011 Retrieved 5 December 2014 Product Family BSL 4 Honeywell Retrieved 5 December 2014 U S Army Chemical Materials Agency Suiting up for Safety Fact Sheet Archived 2015 09 23 at the Wayback Machine Retrieved on 2011 02 11 Sperian Protection is now part of Honeywell Sperian Group History Giraud Jean Edena McNeill Carla Finder Third World バイオハザード解体真書 Game guide in Japanese Japan Enterbrain 23 August 2002 p 234 ISBN 9784757709805 Retrieved from https en wikipedia org w index php title Positive pressure personnel suit amp oldid 1222323845, wikipedia, wiki, book, books, library,

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