ASTM F1002-2006 standard requires a routine 5 yearly ASTM revision. Most of the items are unchanged from the current F1002-2006 standard except for the outdated ASTM Test Method D2262 for Tearing Strength which should be replaced with ASTM D5587-08 Method for Tearing Strength of Fabrics by Trapezoid Procedure. Also, during the last Task group meeting it was agreed that the current TABLE 2- Insulative Performance be replaced with a new proposed Table 2 - Average Visual Rating of Fabrics exposed to Molten Metal Rating Outer (Imapacted) Layer*. This change is necessary as the current TABLE 2 assigns PASS/FAIL values to Flame Propagation and Fabric Integrity - which are neither defined in the standard nor any criteria is given to PASS or FAIL the fabric. The new proposed Table 2 will allow the users to evaluate and quantify the subjective ratings assigned by the testing organization to the fabrics exposed to Molten Metal Splash for each characteristic such as Charring,Shrinkage and Perforation. As a matter of fact, the testing organizations have been using the same subjective rating system for more than fifteen years. Every fabric evaluated by the testing laboratory using the ASTM F955 method to measure the Temp. Rise during the Molten Metal Splash Test, is also rated for its Metal Sticking, Charring, Shrinkage and Perforation using the Visual Rating system as proposed under Table 2 where 1 - Represents the Best Behavior and 5 - Represents the Worst Behavior. Therefore, I believe, the new/revised ASTM F1002 document for Standard Performance Specification for Protective Clothing for Use by Workers Exposed to Specific Molten Substances and Related Thermal Hazards should include this Visual Rating System as shown under Table 2. This change to the current F1002 standard, will help the end-users to better understand, differentiate and select different Primary and Secondary fabrics based on their degradation levels. Thank you.
Keywordsmolten substances; protective clothing; thermal hazards;
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