Zero waste machine coolant management strategy at Los Alamos National Laboratory

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Machine coolants are used in machining equipment including lathes, grinders, saws and drills. The purpose of coolants is to wash away machinery debris in the form of metal fines, lubricate, and disperse heat between the part and the machine tool. An effective coolant prolongs tool life and protects against part rejection, commonly due to scoring or scorching. Traditionally, coolants have a very short effective life in the machine, often times being disposed of as frequently as once per week. The cause of coolant degradation is primarily due to the effects of bacteria, which thrive in the organic rich coolant environment. ... continued below

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5 pages

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Carlson, B.; Algarra, F. & Wilburn, D. December 1, 1998.

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Machine coolants are used in machining equipment including lathes, grinders, saws and drills. The purpose of coolants is to wash away machinery debris in the form of metal fines, lubricate, and disperse heat between the part and the machine tool. An effective coolant prolongs tool life and protects against part rejection, commonly due to scoring or scorching. Traditionally, coolants have a very short effective life in the machine, often times being disposed of as frequently as once per week. The cause of coolant degradation is primarily due to the effects of bacteria, which thrive in the organic rich coolant environment. Bacteria in this environment reproduce at a logarithmic rate, destroying the coolant desirable aspects and causing potential worker health risks associated with the use of biocides to control the bacteria. The strategy described in this paper has effectively controlled bacterial activity without the use of biocides, avoided disposal of a hazardous waste, and has extend ed coolant life indefinitely. The Machine Coolant Management Strategy employed a combination of filtration, heavy lubricating oil removal, and aeration, which maintained the coolant peak performance without the use of biocides. In FY96, the Laboratory generated and disposed of 19,880 kg of coolants from 9 separate sites at a cost of $145K. The single largest generator was the main machine shop producing an average 14,000 kg annually. However, in FY97, the waste generation for the main machine shop dropped to 4,000 kg after the implementation of the zero waste strategy. It is expected that this value will be further reduced in FY98.

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5 pages

Notes

INIS; OSTI as DE00677041

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  • 14. DOE pollution prevention conference, Seattle, WA (US), 06/02/1998--06/04/1998; Other Information: Supercedes report DE99000539; PBD: [1998]

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  • Other: DE99000539
  • Report No.: LA-UR--98-2176
  • Report No.: CONF-980654--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 677041
  • Archival Resource Key: ark:/67531/metadc707574

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • June 14, 2016, 1:44 p.m.

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Carlson, B.; Algarra, F. & Wilburn, D. Zero waste machine coolant management strategy at Los Alamos National Laboratory, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc707574/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.