Hard Chrome Plating Training Course

Table of Contents

Appendix 2. Acronyms and Abbreviations

AC alternating current
ACGIH American Conference of Governmental Hygienists
AESF American Electroplaters and Surface Finishers Society
Al aluminum
amps amperes
AMS Aerospace Material Specification
APSI amps per square inch
ASTM American Society for Testing and Materials
Avg average
Be° degrees Baumé
CD current density
cfm cubic feet per minute
Cl chloride
Cr chromium
Cr III trivalent chromium
Cr VI hexavalent chromium
Cr+3 trivalent chromium
Cr+6 hexavalent chromium
Cr0 metallic chromium
CrO3 chromium trioxide
Cu copper
d day
d diameter
DC direct current
DI deionized
dynes/cm dynes per centimeter
e electron
EPA U.S. Environmental Protection Agency
F fluoride ion
Fe iron
ft feet
ft2 square feet
ft3 cubic feet
g grams
g/L grams per liter
gal gallons
gpd gallons per day
gpm gallons per minute
h height
H2 hydrogen
H2SO4 sulfuric acid
HCl hydrochloric acid
hp horse power
hr hour
ID inside diameter
In inches
in3 cubic inches
kg kilogram
kW kilowatt
kWh kilowatt-hour
L liter
L length
lb pound
lbs pounds
MC methylene chloride
mg milligram
mg/L milligrams per liter
mil thousandth of an inch
min minute
mth month
NESHAP National Emissions Standards for Hazardous Air Pollutants
O&M operating and maintenance
O2 oxygen
°C degrees centigrade
OD outside diameter
OEM original equipment manufacturer
°F degrees fahrenheit
OSHA U.S. Occupational Safety & Health Administration
oz ounce
oz/gal ounce per gallon
P2 pollution prevention
PEL permissible exposure limit
PERC perchloroethylene
ph phase
ppm parts per million
psi pound per square inch
PTFE polytetrafluoroethylene
PVC polyvinyl chloride
r radius
RCRA Resource Conservation and Recovery Act
RFIE reciprocating flow ion exchange
rpm revolutions per minute
SCR silicon controlled rectifier
sec seconds
SO4 sulfate
SS stainless steel
TCE trichloroethylene
TDS total dissolved solids
TLV threshold limit value
TSS total suspended solids
U heat transfer coefficient
V volts
VDC volts direct current
W width
wk week
WR-ALC Warner Robins Air Logistics Center
yr year
Zn zinc
- negative pole
% percent
" inch or inches
+ positive pole
< less than
> greater than
µ micron
µ/hr microns per hour

Appendix 3



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You should consult with legal counsel and appropriate authorities before interpreting any regulations or undertaking any specific course of action.

Please note that many of the regulatory discussions on STERC refer to federal regulations. In many cases, states or local governments have promulgated relevant rules and standards
that are different and/or more stringent than the federal regulations. Therefore, to assure full compliance, you should investigate and comply with all applicable federal, state and local regulations.