ISO Gas Filter Testing

Transcription

1 ISO Gas Filter Testing the upcoming ISO Presented by: Lars Ronner / Sundström Safety AB Sales Manager Central Europe lars.ronner@srsafety.se Created by: Thomas Krügerke / MSA Head of Standards & Certification thomas.kruegerke@msasafety.com

2 Standards for gas filters Todays standards for gas filter in Europe EN 14387:2008 EN 148-1:1999 EN :2002 Upcoming ISO Already released ISO :2015 ISO :2009 ISO :2011 Gas and combination filters Standard thread connection Test Methods: Breathing resistance Performance requirements for filtering respiratory protective devices Standardized Thread Test Methods; Breathing resistance Test Methods: gas filter capacity 2

3 Performance Standards for RPD in ISO Requirements based on human factors (not written around performance of devices) Not design-restrictive (instead of design requirements) Requirements for complete devices (no component requirements) Standardized thread (allowed for masks and filters) 3

4 ISO Gas Filter Testing Gas filter types and classes Gas capacity Performance at peak air flows Pre-conditioning Marking / color code Flame resistance Additional requirements for filters with standardized connector Mass Dimensions 4

5 Gas filter types EN 14387:2008 ISO Type Application Test gas Type Application Test gas A Organic vapours Cyclohexane OV Organic vapours Cyclohexane B Inorganic gases Cl 2 H 2 S HCN AC Inorganic gases Cl 2 H 2 S SO 2 E Acidic gases SO 2 K Ammonia NH 3 HCN Hydrogen cyanide HCN BC Ammonia NH 3 AX Low boiling organic gases Îso-Butane, Di-Methyl-Ether OG Low boiling organic gases Isobutene, Di-Methyl-Ether 5 NO Nitric Oxides NO, NO 2 HG Mercury Hg SX Specific Specific NOX Nitric Oxides NO, NO 2 HG Mercury Hg

6 Gas filter types ISO Type application Test gas ND NO2 NO2 AH Hydrides AsH 3 CO Carbon Monoxide CO OZ Ozone O 3 HF Hydrogen fluoride HF ETO Ethylene oxide ((CH 2 ) 2 O) FM Formaldehyde H 2 CO 6 MB Methyl bromide CH 3 Br

7 Gas capacity Gas capacity test parameters Principle of test unchanged Test gas Test concentration 30 l/min constant flow Temperature 22 C (+/-1 C) Humidity 25% or 70% (+/-3%) Breakthrough concentration Test result: Breakthrough time 7

8 Gas capacity 8 Source: ISO :2011

9 Gas filter classes Organic vapors; test gas: Cyclohexane EN Type & Class Flow rate [l/min] Test Concentration [ml/m³] Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Break through time [min] A A A ISO OV OV OV OV

10 ct-values (concentration x time) Organic vapour filters ct-value [ml*min/m³] ISO EN OV1 OV2 A1 A2 OV3 A3 OV4

11 Gas filter classes Inorganic gases; test gas: Cl 2, H 2 S, HCN EN Type & Class Flow rate [l/min] Test Concentration [ml/m³] B1 30 Cl 2 : 1000 H 2 S: 1000 HCN: 1000 B2 30 Cl 2 : 5000 H 2 S: 5000 HCN: 5000 B3 30 Cl 2 : H 2 S: HCN: Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Cl2: 0,5 H2S: 10 HCN: Cl2: 0,5 H2S: 10 HCN: Cl2: 0,5 H2S: 10 HCN: 10 Break through time [min] Cl2: 20 H2S: 40 HCN: 25 Cl2: 20 H2S: 40 HCN: 25 Cl2: 30 H2S: 60 HCN: 35 11

12 Gas filter classes Inorganic gases; test gas: Cl 2, H 2 S, HCN EN Type & Class B1 30 Cl 2 : 1000 Type & Class Flow rate H 2 S: 1000 HCN: 1000 B2 30 Cl 2 : 5000 [l/min] H 2 S: 5000 HCN: 5000 Break through conc. [ml/m³] Cl2: 0,5 Flow rate Test Concentration Temperature Relative Humidity Acidic [l/min] gases; [ml/m³] test gas: [ C] SO [%] 2 Test Concentration [ml/m³] Temperature H2S: 10 HCN: Cl2: 0,5 [ C] Relative Humidity H2S: 10 HCN: 10 Break through time [min] Cl2: 20 H2S: 40 HCN: 25 Cl2: 20 H2S: 40 HCN: 25 Cl B : Cl2: 0,5 Cl2: 30 H S: H2S: H2S: 60 E1 30 HCN: HCN: 105 HCN: 3520 [%] Break through conc. [ml/m³] Break through time [min] 12 E E

13 Gas filter classes Inorganic gases; test gas: Cl 2, H 2 S, SO 2 ISO Type & Class Flow rate [l/min] Test Concentration [ml/m³] Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Break through time [min] AC AC AC AC Inorganic gases; test gas: HCN 13 HCN HCN HCN HCN

14 ct-values (concentration x time) Inorganic / acidic gases ct-value [ml*min/m³] ISO EN Cl H2S HCN SO AC1 B1 AC2 AC3 B2 AC4 B3 AC1 AC2 B1 AC3 AC4 B2 B3 HCN1HCN2 B1 HCN3 B2 HCN4 B3 AC1 AC2 E1 AC3 E2 AC4 E3

15 ct-values (concentration x time) Inorganic / acidic gases ct-value [ml*min/m³] ISO EN Cl H2S HCN SO AC1 B1 AC2 AC3 B2 AC4 B3 AC1 AC2 B1 AC3 AC4 B2 B3 HCN1HCN2 B1 HCN3 B2 HCN4 B3 AC1 AC2 E1 AC3 E2 AC4 E3

16 Gas filter classes Nitric Oxides;test gases: NO and NO 2 EN14387 Type & Class Flow rate [l/min] Test Concentration [ml/m³] Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Break through time [min] NO ISO NOX NOX NOX

17 ct-values (concentration x time) Nitric oxides filters ct-value [ml*min/m³] EN ISO NO NO NOX1 NOX2 NO NOX3 NOX1 NOX2 NO NOX3

18 Gas filter classes Mercury; test gas: Mercury vapour (saturated) EN14387 Type & Class Flow rate [l/min] Test Concentration [ml/m³] Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Break through time [hour] Hg 30 1, , ISO HG1 30 1, ,012 4 HG2 30 1, ,012 8 HG3 30 1, ,

19 ct-values (concentration x time) Mercury 200 ct-value [ml*hour/m³] HG1 HG2 HG HG3

20 Resistance to migration Adsorbed contaminants may migrate through the filter during storage Filter types OG are therefore for single shift use only, and have to be marked accordingly Filter types ND, ETO, MB, FM, CO, and NOX may be tested against migration Half loaded filters will be tested after storage for 24 hours for rest capacity 20

21 Performance at peak flow rate How much air is needed by the wearer? 4 work rate levels are defined: It depends on the work rate level W4: 135 l/min / 340 peak flow e.g. rescue and fire fighting, climbing stairs at high speed (max 5 min) W3: 105 l/min / 270 peak flow e.g. walking quickly with PPE, climbing over obstacles (15 min to 2 hours) W2: 65 l/min / 180 peak flow e.g. intense shoveling, walking at a speed greater than 7 km/h. 21 W1: 35 l/min average / 110 peak flow e.g. pulling light-weight carts, walking at a speed of 5 km/h

22 Performance at peak flow rate Gas filter performance at specified work rates The gas filter performance at specified work rates verifies that the filter achieves a minimum performance level at the work rate class of the RPD. Same test conditions as in capacity test, with the exception of: Tested at peak flow rate, e.g. at 110 l/min for W1 filters, 180 l/min for W2 filters breakthrough time: 3 minutes Test concentration: max 1000 ml/m³ 22

23 Performance at peak flow rate Example for type OV Type & Class Flow rate [l/min] Test Concentration [ml/m³] Temperature [ C] Relative Humidity [%] Break through conc. [ml/m³] Break through time [min] OV OV OV OV OV W1 OV OV OV

24 Resistance to flame One RPD, as received, shall be tested by subjecting all parts or components exposed while it is worn to the flame of a single burner dynamic test. Exposure to flame only needs to touch one area of each part/component that is exposed while the RPD is worn. When tested, the materials shall not drip at all, undergo complete combustion or continue to burn for more than 5 s. Deformation/decomposition is allowed. The sample does not need to fulfil any other requirement of this standard after this test. 24

25 Filters with Standardized Connector Only for half mask or full face mask + filter Filters having standardized connectors shall be work rate classes W1 (35 l/min) or W2 (65 l/min). Respiratory interfaces with standardized connector (full face masks or half masks) shall be work rate class W2 only. The work rate class of the complete RPD is determined by the work rate class of the filter. 25 W2 full face mask + W1 filter = W1 RPD

26 Filters with Standardized Connector Breathing resistance: Filter Maximum breathing resistance W1 tested at 110 l/min [Pa] Maximum breathing resistance W1 tested at 180 l/min [Pa] Particle filter Gas filter Combination filter Respiratory Interface Maximum breathing resistance tested at 110 l/min [Pa] Maximum breathing resistance tested at 180 l/min [Pa] inhalation exhalation not tested 400 Note: the maximum physiologically acceptable breathing resistance is 1200 Pa! 26

27 Filters with Standardized Connector Mass Max. 500 g 27

28 Filters with Standardized Connector Maximum dimensions 28

29 Filters with Standardized Connector Maximum dimensions 29

30 Preconditioning Exposure to temperature and humidity 24 h: +50 C at < 20% relative humidity; 24 h: -15 C; 24 h: +50 C at 90 % RH for (24 ± 1)h Mechanical stress or 30 Exposure to vibration and shock (IEC :2003 and IEC :2010 )

31 Marking End of shelf life See information supplied by the RPD manufacturer For single shift use only 31 Standardized connector

32 Marking / color code EN ISO Filter Type Color code Filter Type Color code A B All E K AX gas filter Hg NO types 32 P P No confusion or mixing with existing color codes!

33 33 THANK YOU! Any Questions?