Lessons Learned on Modular Shielded Cells

Presenter: Steven Shaw, P.E.
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Existing Facility
Limited Headroom
Limited Access
No infrastructure
Future Compatible
Aggressive Schedule
Codes and Standards
Individual component
weights may not
exceed floor loading.
 Design for assembly on
site without a crane.
 Features to provide
maximum future
compatibility.
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Remotely replaceable
in-cell lighting.
Remotely replaceable
exhaust roughing
filters.
Shielding Performance
In-cell hoists
Adjustable lighting
Cell dimensions
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3 cell types
Standard Shield Wall
Thickness
Reconfigurable
Interconnect able
Sealed and Nonsealed.
Stainless Tub
Epoxy Coated
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The design basis also
provided for 3-different
gloveboxes, and a
modular shielded
storage module.
STANDARD MODULAR
HOT CELL
62,500 kg (138,000 lbs)
STANDARD MODULAR
CELL
MANIPULATOR REACH ENVELOPES
STANDARD MODULAR
HOT CELL
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INTERNAL VOLUME 78” W x
100 H x 54 D
Provision for an optional St Stl
liner
Provision for inert (N2)
operation
The design shall include a
minimum of 5 replaceable feed
through penetration ports.
The design shall incorporate
features that would
accommodate the installation
of removable work trays
capable of supporting 20 lb/sq
ft above the floor of the cell.
STANDARD MODULAR
HOT CELL
MECHANICAL PROPERTIES
TEST CELL
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The internal volume of the modular hot
cell shall be 96 inches wide, 100
inches high, and 72 inches deep.
Shall include a work table located
directly in front of the operating
window.
One manipulator work station (two
mechanical manipulators, CRL Model
E or equivalent as approved by the
Buyer) shall be provided.
An in-cell lifting capability not less than
1000 pounds shall be provided.
In addition to the penetrations required
for installation of the MTS and
INSTRON equipment, no less than 2
replaceable feed through penetration
ports shall be provided.
In-cell storage shall be provided below
the work table surface for interim
storage of source terms stored in two
150 pound shielded containers.
MECHANICAL PROPERTIES
TEST CELL
80,500 kg (177,000 lbs)
MECHANICAL PROPERTIES
TEST CELL
MANIPULATOR REACH ENVELOPES
MECHANICAL PROPERTIES
TEST CELL
MECHANICAL PROERTIES
TEST CELL
METALOGRAPHY CELL
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The internal volume of the modular hot cell
shall be 144 inches wide, 100” high, and 72
inches deep.
An in-cell lifting capability not less than 1000
pounds shall be provided.
Two work stations (4 manipulators, CRL or
Buyer approved equivalent) shall be
incorporated into the cell.
The design of the cell shall include the ability
to potentially partition between the two work
stations.
In-cell storage shall be provided below the
work table surface for interim storage of
source terms stored in shielded containers.
Sample storage shall be easily accessed.
One work station (farthest from the
maintenance access door) will be provided
with a work table that covers approximately
50% of the station work area (split front to
back) of the cell.
3The cell design shall include a minimum of
5 replaceable feed through penetration
ports.
METALOGRAPHY CELL
103,500 kg (228,000 LBS)
METALOGRAPHY CELL
MANIPULATOR REACH ENVELOPES
METALOGRAPHY CELL
METALOGRAPHY CELL
STANDARDIZATION:REDUCE DESIGN AND
FABRICATION COST
 STEEL WALLS: REDUCE ANALYTICAL DESIGN COST.
 MULTIPLE DESIGN REVIEWS
30%, CONCEPTUAL & COST ESTIMATE
60%, INCLUDING INDEPENDENT REVIEWS,
VERIFIED CONSISTANCY BETWEEN SAFETY
AUTHORIZATION AND RADIOLOGICAL
DESIGN REQUIREMENTS.
90%, TOP LEVEL ASSEMBLIES
100% RELEASE FOR FABRICATION
 DELIVERED APPROXIMATELY 6 WEEKS EARLY.
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SUBSTITUTIONS OF KEY COMPONENTS
(SHIELD WINDOWS) NOT AUTHORIZED BY
DESIGN AGENT.
MONTHS BEHIND SCHEDULED DELIVERY.
NON-CONFORMING PARTS APPROVED BY
QC.
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DESIGN AGENT WAS NOT FUNDED TO
PARTICPATE IN VENDOR ACCEPTANCE
TESTING. LEAD TO A NUMBER OF ISSUES.
LACK OF DESIGN AGENT PARTICIPATION IN
NON-CONFORMANCE RESOLUTION
RESULTED IN UNNECESSARY REDESIGN.
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ROUGHING FILTER REDESIGN
 NEW PRESSURE DROP REQUIREMENTS
 NEW MINIMUM AIR CHANGE RATES
ESTABLISHED
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SHIELDING REDESIGN
RECLASSIFIED CELLS TO OCCUPIED SPACE
 RESULTING ELECTRICAL CODE CHANGES
REQUIRED REDESIGN.
HOT CELL TESTING
WENT WELL AFTER
DESIGN
MODIFICATIONS PER
THE NEW DESIGN
CRITERIA.
 SOME ISSUES WITH
GLOVEBOX
TESTING…
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How many times should you replace a
piece of glass before checking for fabrication
issues?
ANSWER: Seven, because QC said it was according to print.
Turns out the best way to pressure a box to 150 Pa
Isn’t with a nitrogen bottle and industrial regulator.
STANDARD
METALOGRAPHY
MECHANICAL TEST
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OPERATIONS
INVOLVEMENT IS
CRITICAL!
“ If operations is involved, it doesn’t
matter how bad it is. If operation’s
is not involved, it doesn’t matter
how good it is.”
DESIGN AGENT
INVOLVEMENT IN
PROCURMENT AND
PROJECT EXECUTION
IS CRITICAL!
 Research scientists and
project managers may
not make the best
design engineers.
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SCHEDULE:
WHEN YOUR HAIR’S ON
FIRE, YOU MAY NOT
EXERCISE THE BEST
JUDGEMENT.
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WHEN YOU WANT IT
BAD, THAT’S WHAT
YOU’LL GET.
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LOW PRICE
BIDDERS…
IT’S NOT THE SAME AS
LOW COST.
CONSIDER:
STEP ONE
OR THE ALTERNATIVE:
PRESENTER: STEVEN SHAW, P.E.
[email protected]
1 (303) 353-3818