accordance with Section 11226 VAPOR PHASE ACTIVATED CARBON ADSORPTION UNITS.
2.12.2
Scrubber
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NOTE: Scrubber is used only for high acid
concentrations resulting from chlorine or sulfur in
the feed or combustion of nitrogen.
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Scrubber shall remove [85] [90] [95] [_____] percent of the acid gas formed.
2.13
STACK
2.13.1
Minimum Exit Velocity
The stack exit velocity shall be not less than [_____] m/sec ft/sec.
2.13.2
Minimum Elevation
The stack elevation shall be not less than stated in paragraph Design
Requirements.
2.13.3
Lining
Stack shall be lined with ceramic and/or castable refractory.
2.13.4
An engineered lightning protection system with grounding shall be provided.
2.13.5
Lugs
Lifting lugs shall be provided at the top of the stack for ease of
installation; each lug shall be capable of supporting the entire weight of
the stack.
2.13.6
Access
Access to the interior of the stack shall be provided by an insulated,
[hinged or supported 0.6 x 0.6 m 24 x 24 inch square or 0.6 m 24 inch
diameter, manway] [150 x 150 mm 6 x 6 inch square or 150 mm 6 inch
diameter, hand hole] located above the burners.
2.13.7
Ladder
An aluminum or galvanized steel fixed ladder shall be mounted to allow
access for removal or replacement of each of the thermocouples. The ladder
furnished with the system shall have side rails. Individual rung ladders
are not acceptable. Ladder shall conform to 29 CFR 1910, Part 27 Fixed
Ladders, except as specified herein. The safety cage shall be provided
with locking device to prevent unauthorized access.
2.14
PROVISIONS FOR OBSERVATION AND SAMPLING
2.14.1
Observation Ports
Observation ports or sight glasses with removable tempered glass covers and
cooling holes shall be provided. View port diameter shall be a minimum of
SECTION 11378
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