You do not have permission to edit this page, for the following reasons:

This IP address has been blocked from editing Wikipedia.
This does not affect your ability to read Wikipedia pages.
Most people who see this message have done nothing wrong. Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.

The IP address or range 44.214.0.0/16 has been blocked by ‪Blablubbs‬ for the following reason(s):

The IP address that you are currently using has been blocked because it is believed to be a web host provider or colocation provider. To prevent abuse, web hosts and colocation providers may be blocked from editing Wikipedia.
You will not be able to edit Wikipedia using a web host or colocation provider because it hides your IP address, much like a proxy or VPN.
We recommend that you attempt to use another connection to edit. For example, if you use a proxy or VPN to connect to the internet, turn it off when editing Wikipedia. If you edit using a mobile connection, try using a Wi-Fi connection, and vice versa. If you are using a corporate internet connection, switch to a different Wi-Fi network. If you have a Wikipedia account, please log in.
If you do not have any other way to edit Wikipedia, you will need to request an IP block exemption.

How to appeal if you are confident that your connection does not use a colocation provider's IP address:
If you are confident that you are not using a web host, you may appeal this block by adding the following text on your talk page: ((unblock|reason=Caught by a colocation web host block but this host or IP is not a web host. My IP address is _______. Place any further information here. ~~~~)). You must fill in the blank with your IP address for this block to be investigated. Your IP address can be determined here. Alternatively, if you wish to keep your IP address private you can use the unblock ticket request system. There are several reasons you might be editing using the IP address of a web host or colocation provider (such as if you are using VPN software or a business network); please use this method of appeal only if you think your IP address is in fact not a web host or colocation provider.

Administrators: The IP block exemption user right should only be applied to allow users to edit using web host in exceptional circumstances, and requests should usually be directed to the functionaries team via email. If you intend to give the IPBE user right, a CheckUser needs to take a look at the account. This can be requested most easily at SPI Quick Checkuser Requests. Unblocking an IP or IP range with this template is highly discouraged without at least contacting the blocking administrator.

This block will expire on 16:45, 10 January 2025. Your current IP address is 44.214.4.121.

Even when blocked, you will usually still be able to edit your user talk page, as well as email administrators and other editors.

For information on how to proceed, please read the FAQ for blocked users and the guideline on block appeals. The guide to appealing blocks may also be helpful.

Other useful links: Blocking policy · Help:I have been blocked
This IP address range has been globally blocked.
This does not affect your ability to read Wikipedia pages.
Most people who see this message have done nothing wrong. Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.

This block affects editing on all Wikimedia wikis.
The IP address or range 44.214.0.0/16 has been globally blocked by ‪AntiCompositeNumber‬ for the following reason(s):

Open proxy/Webhost: Visit the FAQ if you are affected

This block will expire on 13:57, 18 February 2025. Your current IP address is 44.214.4.121.

Even while globally blocked, you will usually still be able to edit pages on Meta-Wiki.

If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy. Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

Other useful links: Global blocks · Help:I have been blocked

You can view and copy the source of this page:

((Short description|Breathing gas supply system carried by the user))
((Redirect|SCBA))
((Broader|Breathing Apparatus))
((distinguish|text=[[Scuba set|SCUBA (self-contained '''underwater''' breathing apparatus)]]))
((refimprove|date=May 2012))
[[File:TFS SCBA gear.jpg|thumb|300px|[[Toronto Fire Services|Toronto firefighter]] wearing an SCBA]]

A '''self-contained breathing apparatus''' ('''SCBA''') is a device worn to provide an autonomous supply of breathable gas in an atmosphere that is [[immediately dangerous to life or health]]. They are typically used in [[firefighting]] and industry. The term ''self-contained'' means that the SCBA is not dependent on a remote supply of [[breathing gas]] (e.g., through a long hose). They are sometimes called '''industrial breathing sets'''. Some types are also referred to as a '''compressed air breathing apparatus''' ('''CABA''') or simply '''breathing apparatus''' ('''BA'''). Unofficial names include ''air pack'', ''air tank'', ''oxygen cylinder'' or simply ''pack'', terms used mostly in [[firefighting]]. If designed for use under water, it is also known as a [[scuba set]] (self-contained underwater breathing apparatus).

An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., ((convert|2216|to|5500|psi|abbr=on|lk=on)), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.((sfn|IFSTA|2008|p=190))

A self-contained breathing apparatus may fall into one of three categories: open-circuit, closed-circuit,((sfn|IFSTA|2008|p=191)) or continuous-flow.<ref name=hoodhelmetmouth />

== Types ==
=== Closed-circuit ===
[[File:Aa savox1.jpg|thumb|[[Siebe Gorman]] Savox in a coal mining museum]]((See also|Rebreather|Self-contained self-rescue device))
The closed-circuit type, also known as a rebreather,<ref name=fivesix /> operates by filtering, supplementing, and recirculating exhaled gas. It is used when a longer-duration supply of breathing gas is needed, such as in [[mine rescue]] and in long [[tunnel]]s, and going through passages too narrow for a big open-circuit air cylinder. Before open-circuit SCBA's were developed, most industrial breathing sets were [[rebreather]]s, such as the [[Siebe Gorman Proto]], [[Siebe Gorman Savox]], or [[Siebe Gorman Salvus]].((citation needed|date=June 2024)) An example of modern rebreather SCBAs would be the [[SEFA]].

==== As of 1987 ([[NIOSH air filtration rating#History|30 CFR Part 11]]) ====
Duration of closed-circuit SCBAs is somewhere between 1-4 hours. A closed-circuit SCBA system is negative-pressure, increasing the risk of leaks.<ref name=fivesix>((harvnb|Bollinger|1987|pp=55-56))</ref>

There are two types of closed-circuit SCBA according to NIOSH:
* Uses '''compressed oxygen'''.
* Uses an '''oxygen-generating solid'''. This involves a chemical reaction between [[potassium superoxide]] with exhaled water and carbon dioxide. A chlorate candle has to be struck to start the device. 
To reduce pressure buildup from use, a pressure-relief valve with saliva trap is included. Closed-circuit SCBAs are also noticeably smaller than open-circuit ones.<ref name=fivesix />

[[Self-contained self-rescue device|Self-contained self-rescue devices]] are also closed-circuit SCBAs, working on the same principles, being designed for emergency use in mines, and lasting about one hour.<ref name=fivesix />

=== Open-circuit ===
[[File:SCBA TruckMount JDiPierro.jpg|thumb|right|SCBA packs carried on a rack in a [[firetruck]]]]
((For|underwater open-circuit breathing sets|Scuba set#Types))
==== As of 1987 ([[NIOSH air filtration rating#History|30 CFR Part 11]]) ====
An open-circuit SCBA does not recirculate air; it instead allows respired air to be exhausted outside. While 30 CFR 11 does not restrict the gas that can be used (although compressed air is usually chosen), use of compressed oxygen is not allowed due to the system's exposure to outside air. Duration is usually limited to 30-60 minutes.<ref name=open>((harvnb|Bollinger|1987|pp=59-64))</ref>

There are two types of open-circuit SCBA according to NIOSH:
* '''Demand''': 2000 psi to the regulator from the main valve, plus a bypass valve in case of failure, with a two-stage regulator reducing pressure to 50-100 psi.
* '''Pressure-Demand''': Similar to demand, but with a spring in the diaphragm, which holds the admission valve open, for continuous air flow to the facepiece.

NIOSH emphasizes that facepieces between both SCBA types cannot be interchanged, but certain SCBAs can be switched to both 'demand' and 'pressure-demand' operation. However, both modes require different training.<ref name=open />

==== Common Traits ====
<!-- Because someone labelled this as citation needed earlier... sorry -->
((citation needed span|date=June 2024|text=Open-circuit industrial breathing sets are filled with filtered, compressed air. Typical open-circuit systems have two stage regulators. The first stage reduces the pressure from storage pressure of up to more than 300 bar to about 10 bar for supply to the second stage on the mask, which further reduces it to just above atmospheric pressure via a demand valve when the pressure drops on inhalation. A positive pressure mask has the demand valve set to close when the pressure inside the mask is slightly above the external ambient pressure, so when the mask is removed from the face or leaks around the skirt, the demand valve will free-flow.))

((citation needed span|date=June 2024|text=An open-circuit rescue or firefighting SCBA has a [[full-face mask]], also called the face-piece, a demand [[diving regulator|regulator]], air cylinder,  pressure gauge, (sometimes with an integrated [[PASS device]]), and a harness with adjustable shoulder straps and waist belt which lets it be worn on the back. The air cylinder is commonly 4 liter, 6 liter, or 6.8 liter, but other sizes are also available. The endurance of the cylinder can be calculated from the volume, pressure and breathing rate of the user. The formula: volume (in liters) × pressure (in bars) / 40 (litres per minute) - 10 minutes (the 10 minutes is a safety margin, or reserve), so a 6-liter cylinder, of 300 bar, is 6 × 300 / 40 - 10 = 35 minutes working duration. The fitness and level of exertion of the wearer affect breathing rate, and result in variations of the actual usable time of the SCBA.))

[[File:PASS device.png|thumb|right|SCBA pack with [[PASS device]] (ADSU)]]
((citation needed span|date=June 2024|text=Air cylinders are made of [[aluminium]], [[steel]], or of a composite construction (usually glass or [[carbon-fiber]] wrapped.) The composite cylinders are the lightest in weight and are therefore preferred by [[fire department]]s (UK: fire and rescue services previously called [[fire brigade]]s), but they also have the shortest lifespan and must be taken out of service after 15 years. Air cylinders must be [[hydrostatic test|hydrostatically tested]] every 5 years.((clarify|where? Hydrostatic test intervals vary by country|date=March 2021)) During extended operations, empty air cylinders can be quickly replaced with fresh ones and then refilled from larger tanks in a [[cascade storage system]] or from an [[air compressor]] brought to the scene.))

=== Continuous-flow ===
Escape SCBAs, also known as ESCBAs, come with hoods, are meant for escapes only, and are operated in continuous flow mode.<ref name=twoseven /><ref name=hoodhelmetmouth /><ref name=scbaescape />

Escape only SCBAs, designed for escape from [[Immediately dangerous to life or health|IDLH]] situations, regardless of type, are usually limited to 3-10 minutes.<ref name=open />((clarification needed|date=June 2024))

==Facepiece==
SCBAs usually come with full-facepieces,<ref name=twoseven>((harvnb|Bollinger|1987|p=207))</ref> but can also come with half-mask or mouthpiece in demand or pressure-demand mode, though use of mouthpieces are limited to escapes only, as of 1987.<ref name=hoodhelmetmouth />

Hoods and helmets are limited to continuous flow mode only, and are also used in [[Supplied-air respirator|air-line respirators]] in addition to escape-only SCBAs.<ref name=hoodhelmetmouth>((harvnb|Bollinger|1987|pp=7-8))</ref><ref name=scbaescape>((harvnb|Bollinger|1987|p=65))</ref>

==Usage==
<!-- Because someone labelled this as citation needed earlier... sorry -->
[[File:Interschutz_2010_Brandbekämpfung_(1).jpg|thumb|Elastomeric masks linked to backpack air tanks: self-contained breathing apparatus, worn by firefighters advancing with a [[firehose]].]]
There are two major application areas for SCBA: [[firefighting]], and industrial use in confined spaces.<ref>((harvnb|Bollinger|1987|p=120))</ref>

((citation needed span|date=June 2024|text=For firefighting, the design emphasis is on heat and flame resistance above cost. SCBAs designed for firefighting tend to be expensive because of the exotic materials used to provide the flame resistance, and to a lesser extent, to reduce the weight penalty on the firefighter. In addition, modern firefighting SCBAs incorporate a [[PASS device]] (personal alert safety system) or an ADSU (automatic distress signal unit) into their design. These units emit distinctive, high-pitched alarm tones to help locate firefighters in distress by automatically activating if movement is not sensed for a certain length of time (typically between 15 and 30 seconds), also allowing for manual activation should the need arise. In firefighting use, the layout of this breathing set should not interfere with [[Fireman's carry|ability to carry a rescued person over the firefighter's shoulders]].))

((citation needed span|date=June 2024|text=The other major application is for industrial users of various types. Historically, mining was an important area, and in Europe this is still reflected by limitations on use in the construction of SCBAs of metals that can cause sparks. Other important users are [[petrochemical]], chemical, and nuclear industries. The design emphasis for industrial users depends on the precise application and extends from the bottom end which is cost critical, to the most severe environments where the SCBA is one part of an integrated protective environment which includes gas-tight suits for whole-body protection and ease of decontamination. Industrial users will often be supplied with air via an air line, and only carry compressed air for escape or decontamination purposes.))

==Regulation and standards==
[[File:Volunteer Fire Fighter.jpg|thumb|right|Volunteer fire fighter exiting live burn structure wearing NIOSH-certified SCBA, NFPA compliant turn-out gear, and holding a pike pole]]
In the United States and Canada, SCBAs used in firefighting must meet guidelines established by the [[National Fire Protection Association]], NFPA Standard 1981. If an SCBA is labeled as "1981 NFPA compliant", it is designed for firefighting. The current version of the standard was published in 2018.<ref>((cite web|url=https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=1981|title=NFPA|website=NFPA|access-date=5 May 2018|url-status=live|archive-url=https://web.archive.org/web/20180406040753/https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=1981|archive-date=6 April 2018))</ref> These standards are revised every five years. Similarly, the [[National Institute for Occupational Safety and Health]] (NIOSH) has a certification program for SCBA that are intended to be used in chemical, biological, radiological, and nuclear (CBRN) environments.

Any SCBA supplied for use in Europe must comply with the requirements of the Personal Protective Equipment Directive (89/686/EEC). In practice this usually means that the SCBA must comply with the requirements of the European Standard EN 137:2006. This includes detailed requirements for the performance of the SCBA, the marking required, and the information to be provided to the user. Two classes of SCBA are recognised, Type 1 for industrial use and Type 2 for firefighting. Any SCBA conforming to this standard will have been verified to reliably operate and protect the user from -30&nbsp;°C to +60&nbsp;°C under a wide range of severe simulated operational conditions.

==Human factors==
SCBA is intended to be personal protective equipment, but its use is not without cost. The weight of the unit and work of breathing affect the work capacity and agility of the wearer, and the full-face mask, while protecting the face and eyes from heat, smoke, and toxic gases, also reduces peripheral vision and awareness of the surroundings. The weight and harness straps may limit tidal volume, ventilation rate, and oxygen consumption, and heart rate may increase in comparison with the same exercise levels without the equipment. Shoulder harness straps of heavy SCBA can reduce free motion of the thorax which affects breathing.<ref name="Louhevaara et al 1985" >((cite journal |last1=Louhevaara |first1=V. |last2=Smolander |first2=J. |last3=Tuomi |first3=T. |last4=Korhonen |first4=O. |last5=Jaakkola |first5=J. |title=Effects of an SCBA on breathing pattern, gas exchange, and heart rate during exercise |journal=J Occup Med. |date=1985 |volume=27 |issue=3 |pages=213–216|pmid=3981278 ))</ref>

==See also==
*((annotated link|NIOSH|wedge=regulator of SCBAs in the United States))
*((annotated link|Glossary of firefighting|Glossary of firefighting terms))
*((annotated link|Respirator))
*((annotated link|PASS device|PASS device (personal alert safety system)|aka=ADSU (automatic distress signal unit)))
*((annotated link|Scuba set|SCUBA))
*((annotated link|Smoke hood|aka=Short Term Air Supply (STAS)))

==Notes==
((reflist))

==References==
((refbegin|2))
* ((cite book |last=IFSTA |date=2008 |title=Essentials of Fire Fighting and Fire Department Operations |edition=5th ))
* ((cite book |url=https://books.google.com/books?id=1Y64oZHP9zYC | title=NIOSH Guide to Industrial Respiratory Protection | last1=Bollinger | first1=Nancy J. | date=1987 ))
((refend))

==External links==
((Commons category|Self-contained breathing apparatus))
<!-- *[http://www.avon-fire.com/comparison.phtml Comparison of 5 makes of SCBA, by Avon, Scott, MSA, Drager, and Survivair] -->
* [https://web.archive.org/web/20090415235244/https://www.cdc.gov/niosh/npptl/topics/respirators/cbrnapproved/scba/ CBRN SCBA interim user guide and list of approved CBRN SCBA (Archived)]
* [https://web.archive.org/web/20061122170359/https://www.cdc.gov/niosh/npptl/standardsdev/cbrn/scba/ CBRN SCBA standard development and publication leading to the first NIOSH-Certified SCBA with CBRN protection offered by the US DHHS/CDC/NIOSH/NPPTL on June 3, 2002 (Archived)]
* [https://web.archive.org/web/20110710204856/http://www.euinfrastructure.com/media/article-images/article-image/INFRAEU/issue-8/web-images/MSA-3_AirGo_Pro.jpg Image of 2-cylinder open-circuit SCBA]
*[http://usminedisasters.com/rescuer_deaths.htm Rescuer Deaths in Underground Mines]
* Literature
**[http://www.iom-world.org/pubs/IOM_TM9405.pdf Study of the physiological effects of wearing breathing apparatus] ((Webarchive|url=https://web.archive.org/web/20140513175818/http://www.iom-world.org/pubs/IOM_TM9405.pdf |date=2014-05-13 )) by RG Love and others. [[Institute of Occupational Medicine]] Research Report TM/94/05

((Breathing apparatus|industrial))
((Fire fighting))

((DEFAULTSORT:Self-Contained Breathing Apparatus))
[[Category:Personal protective equipment]]
[[Category:Breathing apparatus]]
[[Category:Functional masks]]
[[Category:Respirators]]

Pages transcluded onto the current version of this page (help):

Glossary of firefighting (edit)
NIOSH (edit)
National Institute for Occupational Safety and Health (edit)
PASS device (edit)
Respirator (edit)
SCBA (edit)
Scuba set (edit)
Self-contained breathing apparatus (edit)
Smoke hood (edit)
Template:Ambox (view source) (template editor protected)
Template:Annotated link (view source) (template editor protected)
Template:Breathing apparatus (edit)
Template:Broader (view source) (semi-protected)
Template:Category handler (view source) (protected)
Template:Citation needed (view source) (protected)
Template:Citation needed span (view source) (template editor protected)
Template:Cite book (view source) (protected)
Template:Cite journal (view source) (protected)
Template:Cite web (view source) (protected)
Template:Clarification needed (view source) (semi-protected)
Template:Clarify (view source) (template editor protected)
Template:Commons category (view source) (template editor protected)
Template:Convert (view source) (template editor protected)
Template:Delink (view source) (protected)
Template:Distinguish (view source) (template editor protected)
Template:Find sources mainspace (view source) (template editor protected)
Template:Fire fighting (edit)
Template:Firefighting (edit)
Template:Fix (view source) (protected)
Template:Fix-span (view source) (template editor protected)
Template:Fix/category (view source) (protected)
Template:For (view source) (template editor protected)
Template:Harvard citation no brackets (view source) (template editor protected)
Template:Harvnb (view source) (template editor protected)
Template:Hlist/styles.css (view source) (protected)
Template:Icon (view source) (template editor protected)
Template:Main other (view source) (protected)
Template:More citations needed (view source) (template editor protected)
Template:Navbox (view source) (template editor protected)
Template:Navbox with collapsible groups (view source) (template editor protected)
Template:Pagetype (view source) (protected)
Template:Plainlist/styles.css (view source) (protected)
Template:Redirect (view source) (template editor protected)
Template:Refbegin (view source) (template editor protected)
Template:Refbegin/styles.css (view source) (template editor protected)
Template:Refend (view source) (template editor protected)
Template:Refimprove (view source) (template editor protected)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (view source) (protected)
Template:Replace (view source) (protected)
Template:SDcat (view source) (protected)
Template:See also (view source) (template editor protected)
Template:Sfn (view source) (template editor protected)
Template:Short description (view source) (protected)
Template:Short description/lowercasecheck (view source) (protected)
Template:Side box (view source) (template editor protected)
Template:Sister project (view source) (template editor protected)
Template:Webarchive (view source) (template editor protected)
Module:Annotated link (view source) (template editor protected)
Module:Arguments (view source) (protected)
Module:Broader (view source) (semi-protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Convert (view source) (template editor protected)
Module:Convert/data (view source) (template editor protected)
Module:Convert/text (view source) (template editor protected)
Module:DecodeEncode (view source) (template editor protected)
Module:Delink (view source) (protected)
Module:Disambiguation/templates (view source) (protected)
Module:Distinguish (view source) (template editor protected)
Module:Find sources (view source) (template editor protected)
Module:Find sources/config (view source) (template editor protected)
Module:Find sources/links (view source) (template editor protected)
Module:Find sources/templates/Find sources mainspace (view source) (template editor protected)
Module:Footnotes (view source) (template editor protected)
Module:Footnotes/anchor id list (view source) (template editor protected)
Module:Footnotes/anchor id list/data (view source) (template editor protected)
Module:Footnotes/whitelist (view source) (template editor protected)
Module:For (view source) (template editor protected)
Module:Format link (view source) (template editor protected)
Module:GetShortDescription (view source) (template editor protected)
Module:Hatnote (view source) (template editor protected)
Module:Hatnote/styles.css (view source) (template editor protected)
Module:Hatnote list (view source) (template editor protected)
Module:Icon (view source) (template editor protected)
Module:Icon/data (view source) (template editor protected)
Module:Labelled list hatnote (view source) (template editor protected)
Module:Lang (view source) (template editor protected)
Module:Lang/ISO 639 synonyms (view source) (template editor protected)
Module:Lang/data (view source) (template editor protected)
Module:Language/data/iana languages (view source) (template editor protected)
Module:Language/data/iana regions (view source) (template editor protected)
Module:Language/data/iana scripts (view source) (template editor protected)
Module:Language/data/iana suppressed scripts (view source) (template editor protected)
Module:Language/data/iana variants (view source) (template editor protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (template editor protected)
Module:Navbox/configuration (view source) (template editor protected)
Module:Navbox/styles.css (view source) (template editor protected)
Module:Navbox with collapsible groups (view source) (template editor protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (protected)
Module:Pagetype/rfd (view source) (template editor protected)
Module:Pagetype/setindex (view source) (protected)
Module:Pagetype/softredirect (view source) (protected)
Module:Redirect hatnote (view source) (template editor protected)
Module:SDcat (view source) (protected)
Module:Side box (view source) (template editor protected)
Module:Side box/styles.css (view source) (template editor protected)
Module:String (view source) (protected)
Module:TableTools (view source) (protected)
Module:Unicode data (view source) (template editor protected)
Module:Unsubst (view source) (protected)
Module:Webarchive (view source) (template editor protected)
Module:Webarchive/data (view source) (template editor protected)
Module:WikidataIB (view source) (template editor protected)
Module:WikidataIB/nolinks (view source) (template editor protected)
Module:WikidataIB/titleformats (view source) (template editor protected)
Module:Wikitext Parsing (view source) (protected)
Module:Yesno (view source) (protected)

Return to Self-contained breathing apparatus.

Retrieved from "https://en.wikipedia.org/wiki/Self-contained_breathing_apparatus"