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ASTM Issues Health, Safety Standards for Water-Miscible Metalworking Fluids, Dermatitis Prevention

October 19, 2009 // Published as a news service by IHS

 
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ASTM International Subcommittee E34.50 on Health and Safety Standards for Metalworking Fluids developed two standards that cover aspects of water-miscible metalworking fluids (MWFs) and one that covers prevention of dermatitis in the wet metal removal fluid environment.

Prevention of Dermatitis
ASTM E2693 - Practice for Prevention of Dermatitis in the Wet Metal Removal Fluid Environment discusses dermatitis and its causes.

This standard also presents an approach to dermatitis prevention and fluid management, including advice on equipment design, fluid and additive selection, maintenance procedures and mist control.

"No previous standard existed to address prevention of dermatitis, which is the most common occupational illness associated with metal removal fluids," said Thomas Slavin, subcommittee member.

"Primary users of ASTM E2693 will be employers who use metal removal fluids in machining operations as coolants, lubricants and cutting or grinding oils," he said.

Metalworking Fluids
Subcommittee E34.50 also developed two standards that address the detection of microbial contamination in MWFs: ASTM E2657 - Test Method for Determination of Endotoxin Concentrations in Water-Miscible Metalworking Fluids and ASTM E2694 - Test Method for Measurement of Adenosine Triphosphate in Water-Miscible Metalworking Fluids.

Both ASTM E2657 and ASTM E2694 measure biological contamination in MWFs and produce test results that can be used to monitor the condition of these fluids.

"Historically, the primary tool for determining microbial contamination in MWF was by culturing samples," said Frederick Passman, chair of E34.50. "Depending on the microbe of interest, it can take anywhere from 24 hours to 20 days to get an accurate picture."

Passman said ASTM E2694 provides data in less than 10 minutes. "This is a powerful tool for both fluid management and for determining whether there's likely to be a significant bioaerosol exposure risk," he said.

In contrast to ASTM E2694, which detects all actively growing bacteria and fungi, Passman said the endotoxin test in ASTM E2657 specifically detects biomolecules known to cause respiratory disease.

"ASTM E2657 will probably be used more as a diagnostic tool in facilities where respiratory illness has been reported," Passman said. "In this application, ASTM E2657 will be a valuable tool for determining whether endotoxin exposure is likely to be contributing to respiratory disease in a facility."

The subcommittee is looking for participants for an interlaboratory study (ILS) for ASTM E2657 and ASTM E2694.

"We plan to use a single set of MWF for both standards, so labs who are interested in either or both are welcome to participate," Passman said. "A few labs will run both the ILS's for both standards, while most will run one or the other."

Subcommittee E34.50 is part of ASTM Committee E34 on Occupational Health and Safety.

Source: ASTM International.


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