| (a) Cylinder Withdrawal Rates for Chlorine and Sulfur
Dioxide Gases.
(1) Gas Withdrawal. The gas withdrawal rate per cylinder
for chlorine and sulfur dioxide cylinders must be based on Equation
K.2. and the variables from Table K.2. in Figure: 30 TAC §217.273(a)(1).
Attached Graphic
(A) If the chlorine or sulfur dioxide cylinders are
not stored in a temperature-controlled enclosure, the engineering
report must include the ambient temperature based on the lowest consecutive
seven-day average of the average daily local temperatures over the
last ten years, as measured at the nearest National Oceanic and Atmospheric
Administration's National Weather Service weather station with at
least ten years of records.
(B) Heating blankets on chlorine gas cylinders are
prohibited.
(2) Liquid Withdrawal. If liquid withdrawal from one-ton
cylinders is proposed, the maximum withdrawal rates are:
(A) 9,600 pounds per day (lbs/day) of chlorine; and
(B) 7,200 lbs/day of sulfur dioxide.
(b) Number of Cylinders Required. The number of cylinders
required for normal operation at peak flow must be based on Equation
K.3. in Figure: 30 TAC §217.273(b).
Attached Graphic
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