EN 14143:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Respiratory equipment - Self-contained re-breathing diving apparatusOprema za dihala – Samoreševalni dihalni potapljaški aparatiAppareils de protection respiratoire - Appareils de plongée autonomes a circuit ferméAtemgeräte - Autonome Regenerationstauchgeräte13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:SIST EN 14143:2003enTa slovenski standard je istoveten z:EN 14143:200301-december-2003SIST EN 14143:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14143September 2003ICS 13.340.30English versionRespiratory equipment - Self-contained re-breathing divingapparatusApareils respiratoires - Appareils de plongée autonomes àcircuit ferméAtemgeräte - Autonome RegenerationstauchgeräteThis European Standard was approved by CEN on 7 August 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14143:2003 E

Artificial sea water.44Annex ZA (informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.45Bibliography.46

1) °C shall be stated by themanufacturer for each specified absorbent material. It shall maintain an end of inspiration partial pressure ofcarbon dioxide of less than 5 mbar for the stated endurance.Testing shall be done in accordance with 6.6.1 and 6.6.2.5.6.7 Inhalation temperatureThe maximum inspired gas temperature shall be less than 40 °C.Testing shall be done in accordance with 6.6.1 and 6.6.2.5.7 Gas control or supply system5.7.1 Inspired partial pressure of oxygenThe apparatus shall under all conditions of use specified by the manufacturer automatically maintain aninspired partial pressure of oxygen greater than 0,20 bar. The inspired partial pressure of oxygen shall remainwithin the limits specified by the manufacturer. The inspired partial pressure of oxygen shall also bemaintained at a partial pressure of less than or equal to 1,6 bar; except during the descent phase(s) of a divefor a period not greater than 1 min where it may increase to a maximum of 2,0 bar.In the event of a failure of the automatic system provision may be made for the addition of respirable gas bythe diver. If fitted this shall also be able to satisfy the inspired partial pressure of oxygen requirements of thisclause.Testing shall be done in accordance with 6.2, 6.7 and 6.15.

0,10 bar during constant depth phases of the dive. This at a ventilation of 40 l min-1 andassociated oxygen consumption of 1,78 l min-1 Standard Temperature and Pressure, Dry (STPD).During the ascent phase the inspired partial pressure of oxygen may reduce to a minimum of 0,5 bar belowthe set point but shall regain steady state set point within 1 min of halting an ascent.When gas is injected into the breathing circuit the volume of oxygen added in 1 min shall be at least 6 l(STPD).Testing shall be done in accordance with 6.7.5.7.3 Display for inspired partial pressure of oxygen (if fitted)The limit deviation of the oxygen partial pressure display shall be as defined in table 2.Table 2 — Limit deviation of oxygen partial pressure displayOxygen partial pressurebarLimit deviationbar
0,1 to 0,4> 0,4 to 2,0 0,03 0,06Testing shall be done in accordance with 6.2, 6.10.2 and 6.15.5.7.4 Gas enduranceThe gas endurance of the apparatus shall be specified by the manufacturer.NOTEConsideration should be given to additional gas consumption due to the conduct of the dive.Testing shall be done in accordance with 6.6.1 and 6.6.3.5.8 Hoses5.8.1 GeneralThe same high pressure or medium pressure hose assembly respectively shall meet the requirementsspecified in the following sequence: 5.8.2, 5.8.3, 5.8.4 or 5.8.6, respectively.5.8.2 Tensile strength of high and medium pressure hosesThe unpressurised hose assembly shall be subject to a tensile strength of 1 000 N for a test period of 10 s to15 s. Serviceability shall be retained.Testing shall be done in accordance with 6.8.1.5.8.3 Flexibility of high and medium pressure hosesThe unpressurised hose assembly shall be capable of being bent to an angle of 180 for 8 h. Serviceabilityshall be retained.

5 bar; at 100 bar± 10 bar; at 200 bar ± 10 bar; at 300 bar ± 15 bar.Any pressure indicator shall be waterproof to at least twice the intended maximum diving depth specified bythe manufacturer for at least 15 min. Any transparent window(s) shall be splinter-proof. A pressure gaugeshall feature a pressure relief facility that in the event of a leak protects the diver against injury.The safety device of a mechanical pressure gauge shall relieve safely at a pressure not higher than 50 % ofthe burst pressure of the case. The safety device shall also relieve a minimum flow rate of 300 l min-1.T
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