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NIOSH
National Institute for Occupational Safety and Health, a Federal
agency that recommends the exposure limit value of various
substances.
NEC
National Electric Code, Quincy, MA, the Code for the installation of
electrical conductors and equipment within private and public
buildings.
negative air machine
NAM, a mechanical/electrical device used to produce negative air
pressure within an enclosed space. Used during asbestos abatement
and microbial remediation to prevent the spread of contaminates.
negative pressure drying
The process of withdrawing moisture from wall, floor, etc. cavities.
neutralize
The process of removing acids from ferrous and nonferrous metals
after a fire or smoke loss.
NFPA
National Fire Protection Association, Quincy, MA, an association
devoted to fire prevention and the health and welfare of occupants
in private and public buildings.
NIDR
National Institute of Disaster Restoration, Division of the ASCR
International.
NIR
National Institute of Restoration, Charlottesville, VA.
NIRC
National Institute of Rug Cleaning, Division of the ASCR
International.
nitrogen
N, a colorless, odorless, gases element found in animal and
vegetable tissues (protein), used to manufacture ammonia, nitrate
acid, etc.
nitrogen dioxide
NO2, a poisonous gas used in the manufacturing of sulfuric and
nitric acid.
nitrogen oxide
NOx, nitrogen compounds as produced by combustion, part of smog and
ozone.
non-bearing wall
A wall that will only carry its own weight.
nonferrous
Any metal that does not contain iron; copper, aluminum, etc.
non-porous
Materials having a permeance factor of < 1, having a poor absorption
and evaporation rate.
neutralize
To make neutral, to make of no effect through opposing forces.
nutrient
A substance or ingredient that nourishes a living thing.
nylon
A group of synthetics made from coal, water, air, petroleum, natural
gas and agricultural by-products, mildew and insect resistant,
produces hydrogen chloride when decomposed in a fire.
