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Significance and Use
4.1 Application of this guide will provide users with information on how to use the various documents listed in Section related to health and safety of metalworking and metal removal fluids.
4.2 Users of the documents listed in Section may fall into several categories, such as producers of metalworking or metal removal fluids, suppliers of raw materials to those producers, users of metalworking or metal removal fluids, and other interested parties, such as non governmental organizations.
4.3 While all parties may wish to be generally familiar with all the documents listed in Section , producers and users may each want to focus on certain documents which are directly applicable to them:
4.4 Documents Applicable to Producers:
4.4.1 Test Method for Determining Carcinogenic Potential of Virgin Base Oils in Metalworking Fluids
188.8.131.52 Test Method covers a microbiological test procedure based upon the Salmonella mutagenesis assay of Ames et. al (see also Maron et al). It can be used as a screening technique to detect the presence of potential dermal carcinogens in virgin base oils used in the formulation of metalworking oils. Persons who use this test should be well-versed in the conduct of the Ames test and conversant with the physical and chemical properties of petroleum products.
184.108.40.206 Producers of metalworking fluids and metal removal fluids should assure themselves that virgin base oils used in the formulation of neat metalworking and metal removal oils and soluble and semi-synthetic metal removal fluids have an acceptable mutagenicity index or mutagenic potency index.
4.4.2 Guide for Acute Animal Toxicity Testing of Water-Miscible Metal Removal Fluids
220.127.116.11 Guide defines acute animal toxicity tests and sets forth references for procedures to assess the acute toxicity of water-miscible metal removal fluids as manufactured.
18.104.22.168 Application of Guide will provide information on the acute toxicity of water-miscible metal removal fluids and will assist the user in evaluating the potential health hazards of the fluid and developing appropriate work practices.
4.5 Documents Applicable to Users:
4.5.1 Practice for Selection and Safe Use of Water-Miscible and Straight Oil Metal Removal Fluids
22.214.171.124 Practice sets forth guidelines for the safe use of metal removal fluids, additives and biocides. This includes product selection, storage, dispensing, and maintenance.
126.96.36.199 Water-miscible metal removal fluids are typically used at high dilution and dilution rates vary widely. Additionally, there is potential for exposure to undiluted metal removal fluid as manufactured, as well as metal removal fluid additives and biocides.
188.8.131.52 Straight oils generally consist of a severely solvent-refined or hydro-treated petroleum oil, a synthetic oil, or other oils of animal or vegetable origin. Straight oils are not intended to be diluted with water prior to use. Additives are often included in straight oil formulations.
4.5.2 Practice for Minimizing Effects of Aerosols in the Wet Metal Removal Environment
184.108.40.206 Practice sets forth guidelines for minimizing effects of aerosols in the wet metal removal environment.
220.127.116.11 Practice incorporates all practical means and mechanisms to minimize aerosol generation and to control effects of aerosols in the wet metal removal environment.
4.5.3 Test Method for Metal Removal Fluid Aerosol in Workplace Atmospheres
18.104.22.168 Test Method covers a procedure for the determination of both total collected particulate matter and extractable mass metal removal fluid aerosol concentrations in a range from 0.05 mg/m3 to 5 mg/m3 in workplace atmospheres.
22.214.171.124 Test Method describes a standardized means of collecting worker exposure information that can be compared to existing exposure databases, using a test method that is also more specific to metal removal fluids.
4.5.4 Practice for Personal Sampling and Analysis of Endotoxin in Metalworking Fluid Aerosols in Workplace Atmospheres
126.96.36.199 Practice covers quantitative methods for the personal sampling and determination of bacterial endotoxin concentrations in polydisperse metal removal fluid aerosols in workplace atmospheres. Users should have fundamental knowledge of microbiological techniques and endotoxin testing.
188.8.131.52 Endotoxins in metal removal fluid aerosols present potential respiratory hazards to workers who inhale them.
184.108.40.206 Users of Practice may obtain personal exposure data of endotoxin in metal removal fluid aerosols, either on a short-term or full-shift basis in workplace atmospheres.
220.127.116.11 Practice gives an estimate of the endotoxin concentration of the sampled atmosphere.
18.104.22.168 Practice seeks to minimize interlaboratory variation, but does not ensure uniformity of results.
22.214.171.124 It is anticipated that Practice will facilitate interlaboratory comparisons of airborne endotoxin data from metalworking fluid atmospheres, particularly metal removal fluid atmospheres, by providing a basis for endotoxin sampling, extraction, and analytical methods.
4.5.5 Practice for Selecting Antimicrobial Pesticides for Use in Water-Miscible Metalworking Fluids
126.96.36.199 Practice provides recommendations for selecting antimicrobial pesticides (microbiocides) for use in water-miscible metalworking fluids (MWF). It presents information regarding regulatory requirements, as well as technical factors including target microbes, efficacy and chemical compatibility.
188.8.131.52 Practice is not an encyclopedic compilation of all the concepts and terminology uses by chemists, microbiologits, toxicologists, formulators, plant engineers and regulatory affairs specialists involved in antimicrobial pesticide selection and application. Instead, it provides a general understanding of the selection process and its supporting considerations.
4.5.6 Practice for Determination of Endotoxin Concentration in Water Miscible Metalworking Fluids
184.108.40.206 Practice covers quantitative methods for the sampling and determination of Gram-negative bacterial endotoxin concentrations in water miscible metalworking fluids (MWF).
220.127.116.11 Users of Practice should be familiar with the handling of MWF.
18.104.22.168 Practice gives an estimate of the endotoxin concentration of the sampled MWF.
(1) Used on site, Practicegives an indication of changes in Gram-negative bacterial contamination in the MWF.
(2) Practicedoes not replace Practice .
22.214.171.124 Practice seeks to minimize inter-laboratory variation but does not ensure uniformity of results.
126.96.36.199 Practice is intended to relate endotoxin concentration in MWF to health effects of inhaled endotoxin.
4.5.7 Test Method for Enumeration of Non-Tuberculosis Mycobacteria in Aqueous Metalworking Fluids by Plate Count Method
188.8.131.52 Test Method covers the detection and enumeration of viable and culturable rapidly growing Mycobacteria (RGM), or non-tuberculosis Mycobacteria (NTM) in aqueous metalworking fluids (MWF) in the presence of high non-mycobacterial background population using standard microbiological culture methods.
184.108.40.206 NTM such as Mycobacterium immunogenum have been implicated as causative agents of the respiratory disease, extrinsic allergic aveolitis (also known as hypersensitivity pneumonitis; HP).
220.127.116.11 The measurement of viable and culturable mycobacterial densities combined with the total mycobacterial counts (including viable culturable (VC), viable-non culturable (VNC) and non viable (NV) counts) is usually the first step in establishing any possible relationship between Mycobacteria and occupational health concerns (for example, HP).
18.104.22.168 Test Method can be employed in survey studies to characterize the viable-culturable mycobacterial population densities of metal working fluid field samples.
22.214.171.124 Test Method is also applicable for establishing the mycobacterial resistance of metalworking fluid formulations by determining mycobacterium survival by means of plate count technique.
126.96.36.199 Test Method can be used to evaluate the relative efficacy of microbicides against Mycobacteria in metalworking fluids.
4.5.8 Test Method for Enumeration of Mycobacteria in Metalworking fluids by Direct Microscopic Counting (DMC) Method
188.8.131.52 Test Method describes a direct microscopic counting method (DMC) for the enumeration of the acid fast stained mycobacteria population in metalworking fluids. It can be used to detect levels of total mycobacteria population, including culturable as well as non-culturable (possibly dead or moribund ) bacterial cells. This test method is recommended for all water-based metalworking fluids.
184.108.40.206 As noted in , non-tuberculosis mycobacteria are common members of the indigenous MWF bacterial population that have been implicated as agents of HP.
220.127.116.11 Test Method provides a quantitative assessment of the total numbers of acid-fast bacilli; using acidfast staining to selectively identify mycobacteria from other bacteria, followed by enumeration or direct microscopic counting of a known volume over a known area.
18.104.22.168 Although other microbes—particularly the Actinomycetes—also stain acid fast, they are differentiated from the mycobacteria because of their morphology and size. Non-mycobacteria, acidfast microbes are 50-100 times larger than mycobacteria.
22.214.171.124 Test Method provides quantitative information on the total (culturable and non-culturable viable, and non-viable) mycobacteria populations. The results are expressed quantitatively as mycobacteria per mL of metalworking fluid sample.
126.96.36.199 The DMC method using the acid-fast staining technique is a semi-quantitative method with a relatively fast turnaround time.
188.8.131.52 The DMC method can also be employed in field survey studies to characterize the changes in total mycobacteria densities of metalworking fluid systems over a long period of time.
184.108.40.206 The sensitivity detection limit of the DMC method depends on the MF and the sample volume (direct or centrifuged, etc.) examined.
4.5.9 Test Method for Measurement of Adenosine Triphosphate in Water-Miscible Metalworking Fluids
220.127.116.11 Test Method provides a protocol for capturing, extracting and quantifying the adenosine triphosphate (ATP) content associated with microorganisms found in MWF.
18.104.22.168 Test Method measures the concentration of ATP present in the sample. ATP is a constituent of all living cells, including bacteria and fungi. Consequently, the presence of ATP is an indicator of total microbial contamination in metalworking fluids. ATP is not associated with matter of non-biological origin.
22.214.171.124 The ATP test provides rapid test results that reflect the total bioburden in the sample. It thereby reduces the delay between test initiation and data capture, from the 36 h to 48 h (or longer) required for culturable colonies to become visible, to approximately five minutes.
126.96.36.199 Although ATP data generally covary with culture data in MWF, different factors affect ATP concentration than those that affect culturability.
188.8.131.52 Because ATP is present in all living organisms, Test Method can be used as a first-screen to determine whether additional microbiological testing is needed.
184.108.40.206 Although there is no consensus on the exact relationship between bulk MWF bioburdens and bioaerosol concentrations, it is generally recognized that higher bulk fluid bioburdens imply higher bioaerosol concentrations.
4.5.10 Practice for Prevention of Dermatitis in the Wet Metal Removal Fluid Environment
220.127.116.11 Practice sets forth guidelines for reducing dermatitis caused by exposure to the wet metal removal environment. The scope of this practice does not include exposure to chemicals that enter the body through intact skin (cutaneous route), which has the potential to cause other toxic effects.
18.104.22.168 Practice incorporates means and mechanisms to reduce dermal exposure to the wet metal removal environment and to control factors in the wet metal removal environment that have the potential to cause dermatitis.
22.214.171.124 Practice focuses on employee exposure to the skin via contact and exposure to metal removal fluid (MRF).
4.6 Practice for Control of Respiratory Hazards in the Metal Removal Fluid Environment
4.6.1 Practice sets forth guidelines to control respiratory hazards in the metal removal fluid environment.
4.6.2 Practice adopts a systems management approach to control of respiratory hazards in the metal removal fluid environment. Elements include management practices, product selection, methods for mist minimization, machine tool design and maintenance, bioaerosol control, fluid testing and maintenance, personal protective equipment, occupational exposure guidelines, aerosol monitoring and testing methods, medical monitoring and management, and communication and training.
4.6.3 Practice focuses on employee exposure via inhalation of metal removal fluids and associated airborne agents. It does not include prevention of dermatitis which is the subject of Practice .
4.7 Documents Applicable to All:
4.7.1 Management of the Metal Removal Fluid Environment: A Guide to the Safe and Efficient Use of Metal Removal Fluids
126.96.36.199 This guide collects best practices in the management of metal removal fluid systems and provides an educational tool to assist users in taking control of the MRF systems in their workplaces.
188.8.131.52 For many industrial organizations, focusing on the systematic management of MRF systems has proven effective in controlling exposures in the wet metal removal/machining environment. The recommendations are distilled from the experiences of Organization Resources Counselors member companies and represent best practice.
4.7.2 Criteria for a Recommended Standard: Occupational Exposure to Metalworking Fluids
184.108.40.206 This criteria document reviews available information about the adverse health effects associated with occupational exposure to metalworking fluids and metalworking fluid aerosols.
220.127.116.11 Criteria documents provide the scientific basis for new occupational safety and health standards and contain a critical review of the scientific and technical information available on the prevalence of hazards, the existence of safety and health risks, and the adequacy of control methods.
4.7.3 Metalworking Fluids: Safety and Health Best Practices Manual
18.104.22.168 This document reviews best practices as documented by the Occupational Safety and Health Administration, including engineering and work practice controls, establishing a metalworking fluid management program, instituting an exposure monitoring program, medical monitoring of exposed employees and training.
22.214.171.124 This manual is not a standard or regulation and creates no new legal obligations. It is advisory in nature, informational in content, and is intended to assist employers in providing a safe and healthful workplace for workers exposed to metalworking fluids through effective prevention programs adapted to the needs and resources of each place of employment.
1.1 This guide covers information on how to use documents related to health and safety of metalworking and metal removal fluids. As such, this guide will provide the user with sufficient background information to effectively use the documents listed in Section . Documents referenced in this guide are grouped as applicable to producers, to users or to all.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Other DocumentsManagement of the Metal Removal Fluid Environment: Metalworking Fluids: Safety and Health Best Practi
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D7049 Test Method for Metalworking Fluid Aerosol in Workplace Atmospheres
E1302 Guide for Acute Animal Toxicity Testing of Water-Miscible Metalworking Fluids
E1497 Practice for Selection and Safe Use of Water-Miscible and Straight Oil Metal Removal Fluids
E1542 Terminology Relating to Occupational Health and Safety
E1687 Test Method for Determining Carcinogenic Potential of Virgin Base Oils in Metalworking Fluids
E1972 Practice for Minimizing Effects of Aerosols in the Wet Metal Removal Environment
E2144 Practice for Personal Sampling and Analysis of Endotoxin in Metalworking Fluid Aerosols in Workplace Atmospheres
E2169 Practice for Selecting Antimicrobial Pesticides for Use in Water-Miscible Metalworking Fluids
E2523 Terminology for Metalworking Fluids and Operations
E2563 Practice for Enumeration of Non-Tuberculosis Mycobacteria in Aqueous Metalworking Fluids by Plate Count Method
E2564 Practice for Enumeration of Mycobacteria in Metalworking Fluids by Direct Microscopic Counting (DMC) Method
E2657 Practice for Determination of Endotoxin Concentrations in Water-Miscible Metalworking Fluids
E2693 Practice for Prevention of Dermatitis in the Wet Metal Removal Fluid Environment
E2694 Test Method for Measurement of Adenosine Triphosphate in Water-Miscible Metalworking Fluids
E2889 Practice for Control of Respiratory Hazards in the Metal Removal Fluid Environment
ICS Number Code 13.100 (Occupational safety. Industrial hygiene)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E2148-16, Standard Guide for Using Documents Related to Metalworking or Metal Removal Fluid Health and Safety, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top