D- High flow benchmark PAPR 15 Dec 04

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Description

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.National Personal Protective Technology LaboratoryCanister Requirements of CBRN Powered Air-Purifying Respirators with Benchmark ResultsSheraton Station Square Pittsburgh, PATerry Thornton, ChemistDecember 15, 2004NPPTL 2004 12 15 CC SCBA ConceptCanister Requirements of CBRN Powered Air-Purifying Respirators• The requirements for the PAPR canister testing will be based on the same tests as for the air purifying respirator canisters Statement of Standard for Chemical, Biological, Radiological, and Nuclear (CBRN) Full Facepiece Air Purifying Respirator (APR), Dated March 7, 2003• Hazard list derived during earlier CBRN standards development workNPPTL Year Month Day File nameCanister Requirements of CBRN Powered Air-Purifying RespiratorsTRA Challenge Breakthrough Concentration Concentration (ppm) (ppm)Cyclohexane 2600 10Sulfur dioxide 1500 5Hydrogen sulfide 1500 5Cyanogen Chloride 300 2Phosgene 250 1.25Hydrogen Cyanide 940 4.7 Ammonia 2500 12.5Phosphine 300 0.3Nitrogen dioxide 500 1 ppm NO or 25 ppm NO2Formaldehyde 500 1NPPTL Year Month Day File nameCanister Requirements of CBRN Powered Air-Purifying Respirators• Manufacturer will apply for − ...

Informations

• Publié par: Opsue
• Nombre de lectures: 13
• Langue: English

Extrait

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.

National Personal Protective Technology Laboratory

Canister Requirements of CBRN Powered AirPurifying Respirators with Benchmark Results

Sheraton Station Square Pittsburgh, PA Terry Thornton, Chemist

December 15, 2004

NPPTL 2004 12 15 CC SCBA Concept

Canister Requirements of CBRN Powered AirPurifyingRespirators

•The requirements for the PAPR canister testing will be based on the same tests as for the air purifying respirator canisters

Statement of Standard for Chemical, Biological, Radiological, and Nuclear (CBRN) Full Facepiece Air Purifying Respirator (APR), Dated March 7, 2003

•Hazard list derived during earlier CBRN standards development work

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

TRA

Cyclohexane Sulfur dioxide Hydrogen sulfide

Cyanogen Chloride Phosgene Hydrogen Cyanide Ammonia Phosphine Nitrogen dioxide Formaldehyde

Challenge Concentration (ppm)

2600 1500 1500 300 250 940 2500 300 500 500

Breakthrough Concentration (ppm)

10 5 5 2 1.25 4.7 12.5 0.3 1 ppm NO or 25 ppm NO 2 1

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

•Manufacturer will apply for −Moderate breathing rate performance −High breathing rate performance

•Manufacturer specifies filter capacity −Cap 1 through 6

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

•Service life testing will be performed as a system •An applicant submitted manifold will be used for the service life testing. º −Three tests at 25% RH, 25 C at capacity requested º −Three tests at 80% RH, 25 C at capacity requested •Airflow −Constant flow PAPR •The manifold with canister(s) shall be tested at a continuous airflow rate of the measured airflow −Breath Response PAPR •115 L/min (moderate) or 300 L/min (high)

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

Stacking Several comments were received at the docket which suggested that stacking did not fit and should be dropped from the concept.

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

Crisis Provision

The crisis provision requirements for the CBRN PAPR is being investigated. A study is being set up to evaluate whether peak instantaneous panic flows will be covered by the higher flows provided by the normal operations.

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

CBRN PARTICULATE TESTING •P100 Filter ? Canisters shall meet the requirements for a P100 filter which is 99.97% particulate filter efficiency against DOP, tested at the measured airflow of the PAPR system •Constant flow PAPR – Individual canisters tested at the airflow of the PAPR •Demand responsive PAPR  Individual canisters tested at 115 L/min for moderate breathing rate or 300 L/min for high breathing rate •For multiple canister configuration the above airflows will be reduced in proportion by the number of canisters

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

CBRN PARTICULATE TESTING

•Twenty (20) canisters will be tested against DOP •Additionally nine canisters from cyclohexane service life tests will be tested against DOP •The concept of testing using “Equivalent Face Velocity” was removed from the concept. Using docket comments and meetings with stakeholders showed that this was not effective for certification.

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

High Flow Testing Equipment •Equipment has been purchased from two manufacturers of filter testing devices •Both devices will be able to test at flows up to 450 L/min

•Expected delivery date is in February 2005

NPPTL Year Month Day File name

Canister Requirements of CBRN Powered AirPurifyingRespirators

Benchmark Testing •P100 testing was performed for PAPR systems using existing TSI 8130 equipment with a 100 L/min maximum flow Three canisters with high efficiency capability showed P100 efficiency •Other benchmark testing will be performed at flows above

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