World Grain - March 2015 - 86

GRAIN OPERATIONS

STEEL BIN
MAINTENANCE
CHECKLIST
CONCRETE
Cracks in wall
Uneven surface
Tight seal at sidewall base
Stiffeners properly transferring
load to wall
SIDEWALL CHECKS
(BIN EXTERIOR)
Missing bolts
Buckling stiffeners
Bulging sheets
Re-corrugating sheets
Areas of rust
Ladder conditions
ROOF CHECKS
Areas of rust
Roof connection to sidewall
Inlets such as down-spouts, etc.
Structural components
Temperature cable connections
BIN INTERIOR
Areas of rust
Areas of spoiled grain
Aeration and unloading
tunnel covers
ted it is important to promptly cover it
with galvanized rich paint, Nelson said.
Since the loads on the sidewalls and

a properly designed and maintained
foundation is a must. When performing
regular maintenance checks, the foundation is a critical place for inspection. It
has to be strong enough to both support
the grain and prevent an empty bin from
overturning or being pulled off the foundation by high winds.
Nelson said foundations should be
checked for uneven settlement and
cracking. "You want to make sure the
base of the bin is uniformly resting on
the foundation, that the anchor bolts are
in place and the nuts are tight."
There should be a watertight seal
between the base of the bin and
the foundation.
Aeration systems must also be
checked periodically, he said. "Remove
the fans and check to see if there's any
trash or foreign materials building up in
there. Look at the condition of the support brackets and check the transitions
for corrosion and those sorts of things."
Nelson said the price of not doing
routine inspections and steel bin maintenance can be costly in the long run,
leading to a shortened lifespan of the bin
or, worse, a collapsed bin.
"An ounce of prevention is worth
a pound of cure," Nelson said. "Bad
things can happen if you're not keeping
your eyes and ears open."
SAFETY TIPS
Nelson also addressed the issue
of safety, and offered a checklist for

Vertical tears in the bin wall must be fixed
immediately to prevent grain spillage.

commercial grain facility personnel
checklist included:
* Make sure the grain bin is com* Make sure the grain unloading
easier to do this before grain is inside
* Make sure the intermediate gates
* Make sure no one is inside when
you close the door.
Steel grain bins are thin-shell structures, and to maintain their shape and
structural integrity, uniform loading of
the sidewalls is required.
strophic bin failure, make sure it is loading in the center. "You could have a lot of
issues if you're putting all the weight on

For more information, see Page 106.

86

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