Ship SCBA checks, air quality and cylinder hydro testing

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A self-contained breathing apparatus (SCBA) is the one piece of fire-fighting equipment that keeps a person alive inside the fire. It also fails silently. A cylinder can read full and hold contaminated air. A face mask can look fine and leak at the seal. A demand valve can stick. A low-air warning can stay silent until the wearer is out of air, deep in a smoke-filled engine room. That is why the rules check the apparatus every week and test the air and the cylinders on fixed cycles.

This lesson goes through the apparatus part by part, then covers the checks, the air quality standard, cylinder testing and the spare charges the ship must carry.

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The rest of this lesson, the interactive Parts of a fire-fighter's SCBA and the quiz are open to signed-up learners. It's free, takes a minute, and opens every lesson in all 14 courses.

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In this lesson

Try it: Parts of a fire-fighter's SCBA
In plain words
In detail
What the rules say
Flag and class notes
Key numbers
What inspectors find
Questions people ask
Quiz: 6 questions

Sources

1 IMO Resolution MSC.98(73), International Code for Fire Safety Systems (FSS Code), adopted 5 December 2000, chapter 3, paragraphs 2.1 and 2.1.3. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.98(73).pdf
2 IMO Resolution MSC.339(91), Amendments to the FSS Code, adopted 30 November 2012, in force 1 July 2014, chapter 3, paragraphs 2.1.2.1 and 2.1.2.2. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.339(91).pdf
3 IMO Resolution MSC.99(73), revised SOLAS chapter II-2, adopted 5 December 2000, regulation II-2/10.10.2.5. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.99(73).pdf
4 IMO Resolution MSC.338(91), Amendments to SOLAS 1974, adopted 30 November 2012, in force 1 July 2014, regulations II-2/1.2.5, 10.10.1 and 15.2.2.6. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.338(91).pdf
5 IMO MSC.1/Circ.1432, Revised guidelines for the maintenance and inspection of fire protection systems and appliances, 31 May 2012, paragraphs 3.4, 4.5, 5.5, 7.8 and 9.4 (copy annexed to Cayman Islands Shipping Notice 01/2014 Rev 2). https://www.cishipping.com/system/files/notices/documents/CISN%202014_01%20Rev%202%20with%20Annex.pdf
6 IMO MSC.1/Circ.1499, Unified interpretation of chapter 3 of the FSS Code, 12 January 2015 (copy published by Traficom, Finland). https://www.traficom.fi/files/media/regulation/22550-MSC_1-Circ_1499_-_tulkinta_Chapter_3_Of_The_Fss_Code_%28Secretariat%29.pdf
7 IMO MSC.1/Circ.1555, Unified interpretations of SOLAS chapter II-2, 25 November 2016, interpretation of regulation II-2/15.2.2.6 (copy published by Traficom, Finland). https://www.traficom.fi/files/media/regulation/24353-MSC_1-Circ_1555_-_SOLAS_II-2_Fire_Satety_.pdf
8 Republic of the Marshall Islands Maritime Administrator, Marine Notice 2-011-14 Rev. Aug/2025, section 10. https://www.register-iri.com/wp-content/uploads/MN-2-011-14.pdf
9 Liberia Maritime Authority, Marine Notice FIR-001 Rev. 02/26, Fire-protection systems and appliances, section 7. https://www.liscr.com/sites/default/files/online_library/FIR-001.pdf
10 Cyprus Shipping Deputy Ministry, Circular No. 41/2021, section 7 (annexed to IRClass Technical Circular 008/2022). https://www.irclass.org/media/5913/technical-circular-no008.pdf
11 EN 12021:2014, Respiratory equipment: compressed gases for breathing apparatus (CEN standard, purchase from national standards bodies). Limits as given in published summaries of the standard; check the current edition.
12 Tokyo MOU, Report of the 2023 Concentrated Inspection Campaign (CIC) on Fire Safety, table 3. https://www.tokyo-mou.org/wp/wp-content/uploads/CIC-ON-FIRE-SAFETY-2023-Report-public.pdf
13 IMO Resolution MSC.269(85), Amendments to SOLAS 1974, adopted 4 December 2008, in force 1 July 2010, regulation II-2/10.10.2.6. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.269(85).pdf

Free awareness training. Al Safwan Marine is not an approved training provider, so no certificate is given, and these courses are not a qualification. They don't replace STCW training, manufacturer training or the certification technicians need for this work. The manufacturer's manual and your flag's rules always come first.

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