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TM 9-254
8-11.
ESD Protective Work Station.
WARNING
Do not use grounded protective work station for testing.
a.
Army Adopted Configuration. In general, it must occupy a 10-foot square area, cordoned off with yellow lines
or other means of segregation. The area should be posted with signs identifying it as a static-free work area. This
protective station may be used for packaging or by maintenance personnel for repairing sensitive devices, but not when
applying power to the instrument for testing. Refer to figure 8-18 for a sketch of the grounded packaging and/or repair
work station layout.
b.
Precautions Within 20-Foot Distance. For purposes of initially established worksites, the major controlled
area shall be considered as that area within a 20-foot radius of the bench(es). Within this controlled area, the following
shall be excluded:
(1)
Materials handling trucks, carts, and equipment.
(2)
Conveyor drive mechanisms and moving belts.
(3)
Sandblast and air-cleaning equipment.
(4)
Paint spray booths and ventilating equipment.
(5)
Storage of bulk common plastic materials such as large rolls of cushion wrapping material, loose fills,
slab cushioning, or fastpacks.
c.
Precautions Within 50-Foot Distance. A special hazard exists in areas where stretch and shrink wrapping
operations are performed. This is also true where skin packaging, foam-in-place, and plastic bagging are conducted.
These functions must be kept at least 50-feet away from static protected sites.
d.
Chairs. Chairs are generally not recommended within the protected areas. If used, due to physical
impairment of personnel, they must be of conductive construction, making good electrical con- tact with the grounded floor
material, and must have conductive seat covers.
Change 3 8-29
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