B-Benchmark Presentation [Read-Only]

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This presentation should not be considered a final statement of NIOSH policy or of any agency or individual who was involved. This information is intended for use in advancing knowledge needed to protect workers. Comments regarding this presentation may be submitted to the NIOSH Docket Office.Proposed Challenge & End Point Concentrations for Respirator CanistersDraft for DiscussionCBRN APR Test ChallengeGuidelines for determining test challenge concentrations:1. (REL) X (Full Face APF) X (Safety Factor) 4. Minimum Test Challenge = 3 X (IDLH)2. Set APF= 50 5. Breakthru = (REL) / 23. Set Safety Factor, S.F. = 2.0Calculated Test Challenge1. (REL) X REL APF S.F. IDLH 3(IDLH) Test Brkthru (F.F. APF) X Conc. Conc. (SF)Initial Initial 25 50 2 300Ammonia 2500 900 2500 12.535 50 2 1200Carbon Monoxide 3500 3600 3600 17.5Carbon Tetrachloride 2502 200 200 600 600 1Cyanogen Chloride 0.03 50 3 ------ ---- 3 0.02Cyclohexane 300 50 2 30000 1300 3900 30000 150Formaldehyde 1.5 50 2 150 20 60 150 0.0164.7 50 2 50Hydrogen Cyanide 470 150 470 2.3510 50 2 100Hydrogen Sulfide 1000 300 1000 51502 20Nitrogen Dioxide 100 60 100 0.5Phosgene 0.2 5 20 2 6200.1Phosphine 0.3 50 2 30 50 150 150 0.15Sulfur Dioxide 2502 200 100 300 300 1Draft for DiscussionCBRN APR Test ChallengeGuidelines for determining test challenge concentrations:1. (REL) X (Full Face APF) X (Safety Factor) 4. Minimum Test Challenge = 3 X (IDLH)2. Set APF= 50 5. Breakthru = ...

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Publié par

Fyan

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English

Proposed Challenge & End Point Concentrations for Respirator Canisters

Draft for Discussion

Ammonia Carbon Monoxide Carbon Tetrachloride Cyanogen Chloride Cyclohexane Formaldehyde Hydrogen Cyanide Hydrogen Sulfide Nitrogen Dioxide Phosgene Phosphine Sulfur Dioxide

REL

25 35 2 0.03 300 1.5 4.7 10 1 0.2 0.3 2

APF

50 50 50 50 50 50 50 50 50 50 50 50

Calculated Test Challenge S.F.1. (REL) X (F.F. APF) X (SF) 2500 3500 200 3 30000 150 470 1000 100 20 30 200

2 2 2 2 2 2 2 2 2 2 2 2

Draftf or Discussion

IDLH 300 1200 200 ------1300 20 50 100 20 2 50 100

3(IDLH) 900 3600 600 ----3900 60 150 300 60 6 150 300

Test Conc. Initial 2500 3600 600 3 30000 150 470 1000 100 20 150 300

Brkthru Conc. Initial 12.5 17.5 1 0.02 150 0.016 2.35 5 0.5 0.1 0.15 1

CBRN APR Test Challenge Guidelines for determining test challenge concentrations: 1. (REL) X (Full Face APF) X (Safety Factor) 4. Minimum Test Challenge = 3 X (IDLH) 2. Set APF= 50 5. Breakthru = (REL) / 2 3. Set Safety Factor, S.F. = 2.0 Calculated Test Challenge TestTestBrkthruBkthru Conc.Conc.Conc.Conc InitialDraftInitialDraft 2500250012.512.5 3600360017.517.5 600300015 33000.022 30000300015010 15010000.0161 4709402.354.7 1000100055 1002000.51 202500.11.25 15015000.155 300150015

Ammonia Carbon Monoxide Carbon Tetrachloride Cyanogen Chloride Cyclohexane Formaldehyde Hydrogen Cyanide Hydrogen Sulfide Nitrogen Dioxide Phosgene Phosphine Sulfur Dioxide

Draft for Discussion

CBRN APR Test Challenge Guidelines for determining test challenge concentrations: 1. (REL) X (Full Face APF) X (Safety Factor) 4. Minimum Test Challenge = 3 X (IDLH) 2. Set APF= 50 5. Breakthru = (REL) / 2 3. Set Safety Factor, S.F. = 2.0 Calculated Test Challenge Survey Tests Test BkthruTest Conc. Brkthru Conc. ConcConc Draft Draft 2500 12.52000 50 3600 17.5 Not TestedNot Tested 3000 55000 5 300 21590 1.98 3000 105000 10 1000 11000 1 940 4.75000 4.7 1000 55000 10 200 12500 1 250 1.254500 1.24 1500 51500 5 1500 52000 5

Ammonia Carbon Monoxide Carbon Tetrachloride Cyanogen Chloride Cyclohexane Formaldehyde Hydrogen Cyanide Hydrogen Sulfide Nitrogen Dioxide Phosgene Phosphine Sulfur Dioxide

Draftf orD iscussion

Benchmark Study

Canister Survey of Existing First Responder Type Products

Draft for Discussion



Canister Description

First Responder / Multi-gas Canisters

All use 40 mm NATO threads

All use P-100 or equivalent particulate filter

Draft for Discussion

Canister Details

Canister Description

Commerical First Responder Special Canister (Cr+ 6) Commerical First Responder Commerical First Responder EN Multi-Gas Caniste ABEK2Hg/St

Carbon Type (Fill Volume)

ASZM-T (178 ml) ASC-1%T (248 ml) IMP (250 ml) IMP/2 (260 ml) IMP (Cr+) + Others (355 ml

Draft for Discussi

Fill (ml)

178 248 250 260 355

Bed Depth (cm) 2.1 2.6 2.6 3.3 4

Bed Linear Flow Diameter @ 64 l/m (cm) (cm/m) 10.5 0.67 11.0 0.67 10.0 0.67 11.0 0.82 10.6 0.73



Testing Conditions

Air Flow Rate 64 l/m =

Temperature = 25 + 30C

Humidity Conditions

 Dry = 25% Relative Humidity

 Wet = 80% Relative Humidity

Draft for Discussion

     

Challenge Gases/Vapors

Ammonia (NH3) Carbon Tetrachloride (CCl4) Cyanogen Chloride (CNCl) Cyclohexane (C6H12) Formaldehyde (HCHO) Hydrogen Cyanide (HCN)

    

Hydrogen Sulfide (H2S) Nitrogen Dioxide (NO2) Phosgene (C0Cl2) Phosphine (PH3) Sulfur Dioxide (SO2)

Draft for Discussion

Challenge Gas/Vapor vs. Canisters

Draft for Discussion

IMP/2 (260) Carbon Type (Fill Volume)

50.5

Ammonia 2000 ppm

40 30

Challenge Gas Challenge End Pt.Draft CBRN Standard Draft CBRN Standard Conc. (ppm) Conc. (ppm) Pt.Conc. (ppm) EndChallenge Conc. (ppm) Ammonia (NH3 50) 20002500 12.5

IMP (250)

ASC-1%T (248)

ASZM-T (178)

Service Life @ 80% RH (m)

Service Life @ 25% RH (m)