Work Item
ASTM WK9186

New Practice for Chemical Permeation through Protective Clothing Materials: Testing Data Analysis by Use of a Computer Program

1. Scope

This Committee will develop standard specifications, test methods, practices, guides, terminology, and classifications for protective clothing and related personal protective equipment (PPE) designed and constructed to protect the user from potential occupational hazards. Where applicable, this committee will also develop the requirements for conformity assessment of protective clothing and related personal protective equipment. This Committee will coordinate its efforts with other ASTM Committees and outside organizations having mutual interests.

Keywords

chemical protective clothing; permeation testing; permeation calculator; standardized breakthrough time; normalized breakthrough detection time; breakthrough detection time; minimum breakthrough detection time; steady-state permeation rate; cumulative permeation; computer program

Rationale

Permeation testing data analysis for chemical protective clothing has been performed in different manners. It is found that the differences in hand calculation values for the permeation parameters could be up to 30 % or more, resulting in incomparable results provided by different manufacturers or laboratories. Furthermore, the data analysis involves a number of equations and experimental factors. Although Test Method F 739, Practice D 6879, and ISO 6529 request calculating various breakthrough times, they provide no information on how to calculate. However, accurate calculation of the standardized breakthrough time for a closed loop test requires the use of polynomial curve fitting, polynomial derivatives, and quadratic equation solving, which are labor intensive and mathematically complex without a computer program. Calculation of the cumulative permeation at a given elapsed time requires integrating the area under the permeation curve with respect to any arbitrary time interval.

The title and scope are in draft form and are under development within this ASTM Committee.

Details

Developed by Subcommittee: F23.30

Committee: F23

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 10-03-2005

Technical Contact: Pengfei Gao

Item: 001

Ballot: F23 (09-03)

Status: Will Reballot Item

Item: 001

Ballot: F23.30 (07-03)

Status: Will Reballot Item

Item: 002

Ballot: F23 (10-03)

Status: Ballot Item Approved

Item: 001

Ballot: F23.30 (08-01)

Status: Will Reballot Item

Item: 001

Ballot: F23.30 (08-03)

Status: Negative Votes Need Resolution