SIST EN 250:2014
(Main)Respiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing, marking
Respiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing, marking
This European Standard specifies minimum requirements for self-contained open-circuit compressed air underwater breathing apparatus and their sub-assemblies to ensure a minimum level of safe operation of the apparatus down to a maximum depth of 50 m.
Atemgeräte - Autonome Leichttauchgeräte mit Druckluft - Anforderungen, Prüfung, Kennzeichnung
Diese Europäische Norm legt Mindestanforderungen für Leichttauchgeräte mit Druckluft und ihre Baugruppen fest, um ein Mindestmaß an Sicherheit für den Einsatz der Geräte bis zu einer maximalen Tiefe von 50 m sicherzustellen.
Appareils respiratoires - Appareils de plongée autonomes à air comprimé et à circuit ouvert - Exigences, essai, marquage
La présente Norme européenne spécifie les exigences minimales pour les appareils respiratoires autonomes à air comprimé et à circuit ouvert pour la plongée et à leurs sous-ensembles pour assurer un niveau minimal de sécurité dans le fonctionnement des appareils jusqu’à une profondeur maximale de 50 m.
Oprema za dihanje - Potapljaški dihalni aparat z odprtim krogom na stisnjen zrak - Zahteve, preskušanje, označevanje
Standard EN 250 določa minimalne zahteve za potapljaške dihalne aparate z odprtim krogom na stisnjen zrak in njihove podsklope za zagotavljanje najmanjše ravni varnega delovanja aparatov na globini do 50 m.
General Information
- Status
- Published
- Public Enquiry End Date
- 14-Oct-2012
- Publication Date
- 30-Jun-2014
- Technical Committee
- OVP - Personal protecting equipment
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 05-May-2014
- Due Date
- 10-Jul-2014
- Completion Date
- 01-Jul-2014
Relations
- Effective Date
- 01-Jul-2014
- Effective Date
- 01-Jul-2014
Overview
EN 250:2014 - published by CEN in April 2014 - specifies minimum safety, testing and marking requirements for open‑circuit, self‑contained compressed air diving apparatus (SCUBA) and their sub‑assemblies for use to a maximum depth of 50 m. The standard defines essential performance, design and labelling requirements to ensure a baseline level of safe operation for breathing apparatus components such as demand regulators, cylinders, facepieces and hose assemblies.
Key Topics
EN 250:2014 covers technical and test requirements across the full breathing-system lifecycle. Major topics include:
- Design and materials: construction, corrosion and seawater resistance, cleaning and disinfection considerations.
- Demand regulator performance: general and cold‑water performance, pressure reduction stages and exhalation valve behaviour.
- Auxiliary emergency breathing systems: defined requirements and practical performance tests (see Annex B).
- High‑ and medium‑pressure parts: cylinder valves, high‑pressure connections, hose tensile strength, flexibility, leakage and burst testing.
- Safety and warning devices: pressure indicators, reserve valves and active warning devices.
- Facepiece and mouthpiece assemblies: inspired CO2 limits, head harness, full‑face and oro‑nasal mask requirements.
- Environmental and temperature testing: storage and operational tests at elevated and low temperatures, cold‑water testing and seawater resistance.
- Practical performance tests: human subject diving trials, pass/fail criteria and reporting.
- Marking and manufacturer information: labelling rules and required documentation for safe use.
Keywords: EN 250:2014, open‑circuit, self‑contained compressed air diving apparatus, demand regulator, hose assemblies, pressure indicator, cold water performance, seawater resistance.
Applications / Who would use this standard
EN 250:2014 is used by:
- Manufacturers and designers of diving regulators, cylinders and full breathing systems for design validation and type testing.
- Independent test laboratories and conformity assessment bodies performing bench and practical human‑subject tests.
- Procurement and safety managers specifying equipment for commercial diving, professional rescue, military and recreational dive operations.
- Maintenance, inspection and training organizations developing service procedures, user information and marking for safe operation.
Use cases include product development, type approval, production quality control, procurement specifications and compliance documentation.
Related Standards
- EN 250:2014 includes an Annex ZA that addresses the relationship with the Essential Requirements of EU Directive 89/686/EEC.
- For breathing‑air quality or complementary requirements, users should consult other relevant EN/ISO standards (refer to normative references in EN 250:2014).
For implementation, follow the specified test procedures and marking/information requirements in EN 250:2014 to ensure consistent, demonstrable safety for open‑circuit compressed air diving apparatus.
Frequently Asked Questions
SIST EN 250:2014 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Respiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing, marking". This standard covers: This European Standard specifies minimum requirements for self-contained open-circuit compressed air underwater breathing apparatus and their sub-assemblies to ensure a minimum level of safe operation of the apparatus down to a maximum depth of 50 m.
This European Standard specifies minimum requirements for self-contained open-circuit compressed air underwater breathing apparatus and their sub-assemblies to ensure a minimum level of safe operation of the apparatus down to a maximum depth of 50 m.
SIST EN 250:2014 is classified under the following ICS (International Classification for Standards) categories: 13.340.30 - Respiratory protective devices. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 250:2014 has the following relationships with other standards: It is inter standard links to SIST EN 250:2000/A1:2006, SIST EN 250:2000. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 250:2014 is associated with the following European legislation: EU Directives/Regulations: 2016/425, 89/665/EEC, 89/686/EEC; Standardization Mandates: M/031. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 250:2014 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Atemgeräte - Autonome Leichttauchgeräte mit Druckluft - Anforderungen, Prüfung, KennzeichnungAppareils respiratoires - Appareils de plongée autonomes à air comprimé et à circuit ouvert - Exigences, essai, marquageRespiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing, marking13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:Ta slovenski standard je istoveten z:EN 250:2014SIST EN 250:2014en,fr,de01-julij-2014SIST EN 250:2014SLOVENSKI
STANDARDSIST EN 250:2000/A1:2006SIST EN 250:20001DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 250
April 2014 ICS 13.340.30 Supersedes EN 250:2000English Version
Respiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing and marking
Appareils respiratoires - Appareils de plongée autonomes à air comprimé et à circuit ouvert - Exigences, essai et marquage
Atemgeräte - Autonome Leichttauchgeräte mit Druckluft - Anforderungen, Prüfung und Kennzeichnung This European Standard was approved by CEN on 3 February 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 250:2014 ESIST EN 250:2014
Requirement clauses and corresponding test clauses of this European Standard . 37 Annex B (normative)
Auxiliary emergency breathing system . 39 B.1 General . 39 B.2 Requirements . 39 B.3 Testing . 39 B.4 Practical performance test . 40 Annex C (informative)
Artificial seawater . 41 Annex D (informative)
Details of significant technical changes between this European Standard and the previous edition . 42 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC . 43
Figure 1 — High-pressure male fitting, 7/16-20 thread, fitted with O-ring SIST EN 250:2014
Figure 2 — High pressure female fitting, 7/16-20 thread 5.7 Demand regulator performance 5.7.1 General The demand regulator shall be provided with a pressure relief system. The demand regulator performance at 6 bar absolute pressure and in water at 10 °C shall meet the following requirements in the upright position: a) the work of breathing for demand regulators without sensitivity adjustment shall not exceed 2,5 J/l; b) the work of breathing for demand regulators with sensitivity adjustment shall not exceed 2,5 J/l at the maximum sensitivity and 3,0 J/l at the minimum sensitivity; c) the peak respiratory pressure during inhalation and exhalation shall be within the range of ± 25 mbar; d) the positive work of breathing during inhalation shall not exceed 0,3 J/l; e) pressure spikes (during inhalation) with no measurable positive work of breathing shall not exceed 10 mbar; f) pressure peaks (during inhalation) with measurable positive work of breathing shall not exceed 5 mbar. Except for a temporary free-flow of 10 s maximum, the regulator shall not free-flow with the sensing diaphragm in the position tested. Demand regulators which incorporate adjustable sensitivity controls shall be tested with the settings both at minimum and maximum. It may also have a separate dive/pre-dive control. If fitted, this control shall be a two-position switch. If this is a rotational control the rotation shall not be greater than 180°. The pre-dive setting shall be clearly defined and shall be marked accordingly. Demand regulators which incorporate a dive/pre-dive control shall be tested with the control set to dive position. Test in accordance with 6.7. SIST EN 250:2014
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