None of the other suggestions was THE answer.

I think this is what you were looking for:

CONSIGNACIÓN DE MÁQUINAS
Estado en que se sitúa la maquinaria empleada en el proceso de producción, en nivel energético neutro y en situación de bloqueo, para poder tener acceso a la misma durante la operaciones de mantenimiento.
http://www.prevencion-riesgos.com/diccionario.asp?palabra=&l...

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Consignación de máquinas

Lockout of machinery and dangeous equipment
http://www.mtas.es/insht/ntp/ntp_052.htm

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"Lockout/Tagout (LOTO)" refers to specific practices and procedures to safeguard employees from the unexpected energization or startup of machinery and equipment, or the release of hazardous energy during service or maintenance activities.

Approximately 3 million workers service equipment and face the greatest risk of injury if lockout/tagout is not properly implemented. Compliance with the lockout/tagout standard (29 CFR 1910.147) prevents an estimated 120 fatalities and 50,000 injuries each year. Workers injured on the job from exposure to hazardous energy lose an average of 24 workdays for recuperation. In a study conducted by the United Auto Workers (UAW), 20% of the fatalities (83 of 414) that occurred among their members between 1973 and 1995 were attributed to inadequate hazardous energy control procedures specifically, lockout/tagout procedures.

The following questions link to information relevant to the control of hazardous energy (lockout/tagout) in the workplace.

What standards apply?
OSHA | National Consensus
Lockout/Tagout Concepts What is lockout/tagout and why is it needed?

Lockout/Tagout Programs Where can I find example lockout/tagout programs?

Additional Information What additional information is available?

http://www.osha.gov/SLTC/controlhazardousenergy/index.html

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Other links:

Lock Out/Tag Out Management Plan :: Occupational Safety :: EHRS
EHRS will also retain records of the annual Lockout / Tagout program audit. ... University of Pennsylvania Facilities Services Lock Out/Tag Out Program ...
http://www.ehrs.upenn.edu/programs/occupat/lockout_tagout.ht...

Federal PowerPoints on Lockout/Tagout at Safety.BLR.com
Federal PowerPoints on Lockout/Tagout at BLR's Safety.BLR.com.
http://safety.blr.com/results.cfm/type/55/topic/121/state/15...

[PDF]
LOCKOUT/TAGOUT
Train employees in the purpose and methods of lockout/tagout. • Inform the job supervisor about the proposed work, and obtain permission to lockout ...
http://www.aws.org/technical/facts/FACT-18.PDF

[PDF]
Occurrence Report - FAILURE OF MONTHLY SHIFT TO FILTRATION ...
At the time of the test failure, a normal tagout/lockout was in place, ... of the tagout/lockout, and further knew this was the only abnormal plant ...
http://www.wipp.energy.gov/orps/1999-ORPS-0007.pdf - Similar pages

UVA/OEHS Lock Out Tag Out (LOTO) of Hazardous Energy Sources
Does Lock Out Tag Out (LOTO) apply to cord and plug equipment that may be used ... Cannot substitute interlocks on electrical equipment for lockout/tagout.
http://keats.admin.virginia.edu/os/loto.html

Yet other links:
http://www.google.com/search?num=100&hl=en&newwindow=1&safe=...


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It's also on a previous Proz question, where the Asker (and other users) failed to choose the correct answer:

http://www.proz.com/kudoz/1667888


Hope it helped, cos I'm absolutely sure of this and I worked hard! :)