subjected to continuous temperatures of 204 degrees C
400 degrees F or higher.
**************************************************************************
d.
Inlet manifold:
[ASTM A 242/A 242M Type 1] [or] [ASTM A 36/A 36M].
e.
Dense castable abrasion resistant lining:
ASTM C 401, Class B.
**************************************************************************
NOTE: Use ASTM A 242/A 242M steel when material is
subjected to continuous temperatures of 204 degrees C
400 degrees F or higher.
**************************************************************************
f.
Structural and miscellaneous steel:
[ASTM A 242/A 242M Type 1]
[or] [ASTM A 36/A 36M].]
2.2
FABRICATION
**************************************************************************
NOTE: Select the applicable paragraph(s) from the
following:
**************************************************************************
**************************************************************************
NOTE: Use these paragraphs for multitube collectors.
150 mm 6 inch diameter collecting tubes may cause a
plugging problem. Designer must investigate flue
gas particulate size, distribution and tendency of
particulates to adhere to each other for the
specific project before selecting diameter of
collector tubes.
**************************************************************************
[Fabricate multitube type mechanical dust collector(s) of welded and
flanged steel with structural steel supporting framework. Arrange internal
inlet tubes so that no tube is more than one row away from alleyway with a
minimum width of 460 mm 18 inches that will allow total accessibility for
inspection and cleaning of tubes. Recovery vanes are not required and
shall not be provided on dust collectors that receive the gases from oil
burning [boilers] [incinerators]. Stresses due to draft differential and
thermal expansion shall not cause excessive deflection of plates or
members. Joints between tubes and tube sheets shall be gas tight; dust
collector housings shall be gas tight and dust tight. Flange flue gas
inlet and outlet connections and arrange to accommodate connecting
breeching as shown on drawings. Arrange tubes in outlet and hopper
sections so that no tube is more than two rows from physical access from an
alleyway with a minimum width of 600 mm 24 inches.]
**************************************************************************
NOTE: Use this and associated paragraphs for 600 mm
24 inch or larger diameter cyclone collectors. A
choice of diameter is dependent upon design
parameters that must be analyzed (See paragraph
entitled "SD-81, Operation and Maintenance
Instructions, Parts and Testing") and satisfied for
each specific project.
**************************************************************************
SECTION 15861N
Page 21
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