Current through August 26, 2024
An owner or operator of a polyvinyl chloride plant shall
comply with the requirements of this section and s.
NR 449.07.
(1)
REQUIREMENTS FOR VINYL CHLORIDE REACTORS.
(a)
The concentration of vinyl chloride in all exhaust gases discharged to the
atmosphere from each vinyl chloride reactor may not exceed 10 parts per
million, except as provided in par.
(b) and s.
NR 449.07(1).
(b) The vinyl chloride reactor opening loss
from each vinyl chloride reactor may not exceed 0.020 gram vinyl
chloride/kilogram (0.000020 pound vinyl chloride/pound) of polyvinyl chloride
product, with the product determined on a dry solids basis. This requirement
applies to any vessel which is used as a vinyl chloride reactor or as both a
vinyl chloride reactor and a stripper. In the bulk process, the product means
the gross product of prepolymerization and postpolymerization.
(c) Except for an emergency manual vent valve
discharge, there may be no discharge to the atmosphere from any manual vent
valve on a polyvinyl chloride reactor in vinyl chloride service. An emergency
manual vent valve discharge means a discharge to the atmosphere which could not
have been avoided by taking measures to prevent the discharge. Within 10 days
of any discharge to the atmosphere from any manual vent valve, the owner or
operator of the source from which the discharge occurs shall submit to the
department a report in writing containing information on the source, nature and
cause of the discharge, the method used for determining the vinyl chloride
loss, the action that was taken to abate the discharge, and measures adopted to
prevent future discharges.
(2) REQUIREMENT FOR STRIPPERS. The
concentration of vinyl chloride in all exhaust gases discharged to the
atmosphere from each stripper may not exceed 10 parts per million, except as
provided in s.
NR 449.07(1). This requirement does not
apply to equipment that has been opened, is out of operation, and met the
requirement in s.
NR 449.07(2) (f) 1. before being
opened.
(3) REQUIREMENT FOR MIXING,
WEIGHING, AND HOLDING CONTAINERS. The concentration of vinyl chloride in all
exhaust gases discharged to the atmosphere from each mixing, weighing, or
holding container in vinyl chloride service which precedes the stripper, or the
reactor if the plant has no stripper, in the plant process flow may not exceed
10 parts per million, except as provided in s.
NR 449.07(1). This requirement does not
apply to equipment that has been opened, is out of operation, and met the
requirement in s.
NR 449.07(2) (f) 1. before being
opened.
(4) REQUIREMENT FOR MONOMER
RECOVERY SYSTEMS. The concentration of vinyl chloride in any exhaust gases
discharged to the atmosphere from each monomer recovery system may not exceed
10 parts per million, except as provided in s.
NR 449.07(1). This requirement does not
apply to equipment that has been opened, is out of operation, and met the
requirement in s.
NR 449.07(2) (f) 1. before being
opened.
(5) REQUIREMENTS FOR
SOURCES FOLLOWING STRIPPERS. The following requirements apply to emissions of
vinyl chloride to the atmosphere from the combination of all sources following
strippers, or vinyl chloride reactors if the plant has no strippers, in the
plant process flow including but not limited to, centrifuges, concentrators,
blend tanks, filters, dryers, conveyor air discharges, baggers, storage
containers, and inprocess wastewater:
(a) In
polyvinyl chloride plants using stripping technology to control vinyl chloride
emissions, the weighted average residual vinyl chloride concentration in all
grades of polyvinyl chloride resin processed through the stripping operation on
each calendar day, measured immediately after the stripping operation is
completed, may not exceed:
1. 2000 parts per
million for polyvinyl chloride dispersion resins, excluding latex
resins.
2. 400 ppm for all other
polyvinyl chloride resins, including latex resins, averaged separately for each
type of resin.
(b) In
polyvinyl chloride plants controlling vinyl chloride emissions with technology
other than stripping or in addition to stripping, emissions of vinyl chloride
to the atmosphere may not exceed:
1. 2.0
grams/kilogram (0.0020 pound/pound) product from the strippers (or vinyl
chloride reactors if the plant has no strippers) for dispersion polyvinyl
chloride resins, excluding latex resins, with the product determined on a dry
solids basis.
2. 0.40 gram/kilogram
(0.00040 pound/pound) product from the strippers, or vinyl chloride reactors if
the plant has no strippers, for all other polyvinyl chloride resins, including
latex resins, with the product determined on a dry solids basis.
