
QUALITY CONTROL PROVISION
3–11
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
grounded conditions (minimum of once a week)
A visual inspection must be made to determine full compliance with this specification at static-free workstations
during handling of static-sensitive items, including operator being grounded as required, static-sensitive items
not being handled in unprotected or unauthorized areas, and no static-generating materials at the grounded
workstation.
sleeve protectors (minimum of once a week)
A visual check must be made to determine that each operator wearing loose-fitting or long-sleeved clothing
either has sleeves properly rolled or covered with sleeve protectors and is properly grounded with a wrist strap
to the bare skin.
static voltage levels (minimum of once a week)
In addition to the visual inspections, a sample inspection using an electrostatic voltmeter to check for
uncontrolled electrostatic voltages at or near electrostatic-controlled workstations.
conductive floor tiles (minimum of once a month)
Conductive floors must have a resistance of not less than 100 k
from any point on the tile to earth ground. Also,
resistance from any point-to-point on the tile floor three (3) feet apart must be not less than100 k
. The test
methods to be used are ASTM-F-150-72 and NFPA 99.
records
Written records must be kept of all ESD QC audits.
training
Training is applicable for all areas where individuals come in contact with ESD-sensitive devices. It is the
responsibility of each area supervisor to make sure that his/her people receive ESD training initially and every
12 months thereafter to maintain proficiency. Training may include static fundamentals, a review of applicable
parts of this specification guideline, and actual applications in the work area.