HAP
HAZARDOUS AIR POLLUTANTS
HASL
HOT AIR SOLDER LEVELING
HARD CHROMIUM
A chromium deposit which is more than 100 uin. (2.5 um) thickness. Compared to decorative
chromium, the bath usually
has a higher chromium concentration and is operated at a higher temperature and current
density.
HASTELLOY
A high strength nickel-based steel alloy with excellent corrosion resistance.
HAZOP
HAZARD AND OPERABILITY
HAZWOPER
HAZARDOUS WASTE OPERATIONS AND EMERGENCY RESPONSE REGULATIONS
HAZWRAP
HAZARDOUS WASTE REMEDIAL ACTION PROGRAM
HBN
HEALTH-BASED NUMBERS
HCFC
HYDROCHLOROFLUOROCARBONS
HCS
HAZARDOUS COMMUNICATION STANDARD
HDPE
HIGH DENSITY POLYETHYLENE
HEPA
HIGH EFFICIENCY PARTICULATE AIR PURIFYING RESPIRATOR EQUIPMENT
HERL
HEALTH EFFECTS RESEARCH LABORATORY
HFC
HYDROFLUOROCARBONS
HHW
HOUSEHOLD HAZARDOUS WASTE
HIGH CARBON STEEL
Carbon steels containing 0.35% carbon or more. It has a high affinity for hydrogen and
susceptible to hydrogen embrittlement.
HIP
HOT ISOSTATIC PRESSING
HISTOGRAM
A histogram is a visual representation of the spread of dispersion of variables (
continuos ) data.
In histograms of natural data there is a tendency for many items to fall
towards the center
of the distribution ( central tendency ), with progressively fewer items as you move
from the center.
HMAC
HAZARDOUS MATERIALS ADVISORY COUNCIL
HMIS
HAZARDOUS MATERIALS IDENTIFICATION SYSTEM
HMR
HAZARDOUS MATERIALS REGULATIONS
HMTA
HAZARDOUS MATERIALS TRANSPORTATION ACT
HMTUSA
HAZARDOUS MATERIALS TRANSPORTATION AND UNIFORM SAFETY ACT
HONING
An abrasive or polishing operation which uses a fine grinding action. Frequently, the
process uses a limestone medium in tumbling.
HPV
HIGH PRODUCTION VOLUME
HRS
HAZARD RANKING SYSTEM
HSIA
HALOGENATED SOLVENTS INDUSTRY ALLIANCE
HSLA
HIGH-STRENGTH LOW-ALLOY
HSWA
HAZARDOUS AND SOLID WASTE AMENDMENTS
HULL CELL
A trapezoidal plating box with a volume of 267mL in which 4' panel
the CATHODE (-)
is placed at 38 degrees to a dissolving ANODE (+); this angle creates a
wide 'current density'
( ASF ) range to check the bath.
HVLP
HIGH VOLUME LOW PRESSURE
HVOF
HIGH-VELOCITY OXYGEN FUEL
HWD
HAZARDOUS WASTE DISPOSAL
HWERL
HAZARDOUS WASTE ENGINEERING RESEARCH LABORATORY
HWIR
HAZARDOUS WASTE IDENTIFICATION RULE
HWMF
HAZARDOUS WASTE MANAGEMENT FACILITIES
HWTC
HAZARDOUS WASTE TREATMENT COUNCIL
HYDROGEN EMBRITTLEMENT
Embrittlement of a metal caused by absorption of hydrogen during cathodic pickling,
electrocleaning or plating.
HYDROPHILIC
A surface that wets with water easily.