2. Roofing cement is a petroleum-based product
with asphalt binders and primers mixed in, and it is NOT
environmentally friendly. Disposal of these products
are nightmares to our supply system and our landfills.
3. C u r i n g c o m p o u n d s consist of waxes,
chlorinated rubber, resins, and highly volatile solvents.
However, these are water- based curing compounds that
are environmentally friendly.
4. Oil-based paints consist mainly of a drying oil
(usually linseed), and they are mixed with one or more
pigments (unsoluble solids). The disposal of oil-based
paints is also a nightmare to the supply system and our
These construction products are also covered in
the NAVFAC MO 110, Paints and Protective
Another air pollutant that you must be
knowledgeable of and concerned with is asbestos
dust. Asbestos is a fibrous mineral that can be woven
like wool. Through a variety of processes, asbestos can
be turned into thousands of construction products.
These products were used extensively from the 1930s
through the 1960s. Asbestos, used by mankind for
over 2,500 years, was found to be a health hazard in
the early 1900s.
Then, only miners and workers in industrial
manufacturing plants were believed to be affected by
asbestos. However, as research continued, asbestos
was discovered to be the main cause of asbestosis, a
generic term for a wide range of asbestos-related
disorders and mesothelioma. Mesothelioma, at one
time, was a rare form of lung cancer. Now it occurs
much more frequently among people exposed to
asbestos dust particles.
The three terms associated with asbestos dust
particle length that you need to know are micron,
nanometer, and angstrom. To give you an idea of their
size, realize that in 1 meter, there are 1 million
microns, 1 billion nanometers, and 10 billion
angstroms. Within this size range, air that appears to
be dust-free can contain millions of disease-producing
asbestos particles. These minuscule asbestos particles
have led to many laws, regulations, and clean-up
problems. These invisible particles can remain
suspended in the air for months. To solve this problem,
you must take air samples to ascertain the severity of
the situation. To remove these particles, the air must
be scrubbed with a special air filtration machine,
called a High Efficient Particulate Air (HEPA) filtered
vacuum. This vacuum will filter out 99.97 percent of
asbestos particles from the air.
Normally, asbestos removal is not conducted
by NCF personnel. See COMSECONDNCB/
COMTHIRDNCBINST 5100.1 (series) for detailed
guidance on NCF asbestos policy and procedures.
However, if you are stationed at an overseas Public
Works Department (PWD), you might have to abate
(contain or dispose of) this fibrous material. To
remove asbestos, you must be qualified through the
National Asbestos Training Center (NATC) or
equivalent agencies. OPNAVINST 5100.23 (series)
covers asbestos very thoroughly, or you may refer to
the Department of Labor (DOL) or CFR 1910.1001
and 1926.58 for control of asbestos exposure. For
many years, asbestos was used for the following types
Roofing, siding, and flooring products
Friction products, that is, brakes and clutch
Reinforcing materials in cement pipe, concrete
asbestos board (CAB), lagging, and thickening
agents used in some paints
Thermal and acoustical insulation
In all cases, you must constantly research the laws
governing asbestos. If you continually work with or
around asbestos, stay informed of current regulations
and laws regulating the use of it. Asbestos laws are
constantly changing and being updated. At the present
time, legislation is proposed to outlaw all forms and
uses of asbestos. When you doubt whether youve had
contact with asbestos, consult your safety office.
This chapter provides various, but limited insight
about PRCPs, construction administration, training,
safety and environmental pollution. This information
given you and the references listed are what you need
to study to advance, hone your skills, and to become
an outstanding Seabee.