Design Considerations for Abrasive Blast Rooms Recovery ... · Report Documentation Page Form...
Transcript of Design Considerations for Abrasive Blast Rooms Recovery ... · Report Documentation Page Form...
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Clemco Industries Corp.
presents
Design Considerations forAbrasive Blast Rooms
&Recovery Systems
by Bob KerrBusiness Development Manager
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Report Documentation Page Form ApprovedOMB No. 0704-0188
Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering andmaintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information,including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, ArlingtonVA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if itdoes not display a currently valid OMB control number.
1. REPORT DATE FEB 2010 2. REPORT TYPE
3. DATES COVERED 00-00-2010 to 00-00-2010
4. TITLE AND SUBTITLE Design Considerations for Abrasive Blast Rooms & Recovery Systems
5a. CONTRACT NUMBER
5b. GRANT NUMBER
5c. PROGRAM ELEMENT NUMBER
6. AUTHOR(S) 5d. PROJECT NUMBER
5e. TASK NUMBER
5f. WORK UNIT NUMBER
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Clemco Industries Corp,445 Bush Street,San Francisco,CA,94108-3730
8. PERFORMING ORGANIZATIONREPORT NUMBER
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S)
11. SPONSOR/MONITOR’S REPORT NUMBER(S)
12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release; distribution unlimited
13. SUPPLEMENTARY NOTES 2010 U.S. Army Corrosion Summit, Huntsville, AL, 9-11 Feb. U.S. Government or Federal Rights License
14. ABSTRACT
15. SUBJECT TERMS
16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT Same as
Report (SAR)
18. NUMBEROF PAGES
82
19a. NAME OFRESPONSIBLE PERSON
a. REPORT unclassified
b. ABSTRACT unclassified
c. THIS PAGE unclassified
Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18
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PLANNING CONSIDERATIONS
• ENCLOSURE
• LOCATION OF ROOM
• COMPLETELY INSIDE
• ROOM INSIDE, COLLECTOR OUTSIDE
• COMPLETELY OUTSIDE
• PARTIALLY OUTSIDE
• RECOVERY SYSTEM LOCATION
• ON TOP OF EXISTING FLOOR
• FLUSH-MOUNTED (RECOVERY SYSTEM IN PIT)
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TYPES OF ENCLOSURES
• FLANGE BOLT
– ECONOMICAL
– MAXIMUM WIDTH LIMITED TO 16 FEET
• HYBRID FLANGE BOLT
– FLANGE BOLT WITH STIFFENERS
• COLUMN BOLT
– ALLOWS FOR WIDER ENCLOSURES
– STRONG ENOUGH TO SUPPORT MONORAIL
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Flange Bolt Room
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Column Bolt Room
• Structural steel
framework
• Galvanized steel
panels
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COMMON FEATURES
• GALVANIZED CONSTRUCTION
• FLOOR-TO-CEILING DOORS CAN BE
INSTALLED INTO ONE OR BOTH ENDS
• PERSONNEL DOORS CAN BE
INSTALLED IN ANY WALL PANEL
– REQUIRED EVERY 30 FEET PER O.S.H.A.
• OPTIONS
– EXTERIOR WORK STATIONS
– SPECIAL LIGHTING
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Inlet Door Installation
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AIR INLETS
• Baffled inside &
outside
• Filtered
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MANDOOR
• Panic Hardware
• Viewer with cover
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ILLUMINATION
• TYPICALLY, 50-80 FOOT CANDLES IS
SUFFICIENT
• FLUSH-MOUNTED TO CEILING
– PROTECTED FROM INADVERTENT BLASTING
– SEALED TO AVOID DUST INGRESS
• ADDITIONAL WALL-MOUNTED LIGHTS
PROVIDE SHADOW FREE ILLUMINATION
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Light Module
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EXTERIOR WORK STATION
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RECOVERY FLOOR TYPES
• SWEEP-IN
– 2x2 AND 3x3 HOPPERS
• MECHANICAL RECOVERY
• FOR DENSE MEDIA, SUCH AS STEEL GRIT AND SHOT
– M-SECTION STRIP
• PNEUMATIC RECOVERY
• FOR LIGHTWEIGHT MEDIA, SUCH AS GLASS BEADS,
ALUMINUM OXIDE, AND PLASTIC
• PARTIAL FLOOR
– MULTIPLE M-SECTIONS
– SCREW
– -BELT
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RECOVERY FLOOR TYPES
continued
• FULL FLOOR
– MECHANICAL RECOVERY
• FLAT-TRAK
• SCREW CONVEYORS
• BELT CONVEYORS
– PNEUMATIC RECOVERY
• M-SECTION
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FULL FLOOR RECOVERY
• COMPLETELY AUTOMATES THE
MEDIA RECOVERY PROCESS
• MECHANICAL RECOVERY
– SCREW CONVEYOR
– -BELT CONVEYOR
– FLAT-TRAK
• PNEUMATIC RECOVERY
– M-SECTION
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PARTIAL FLOOR RECOVERY
• REDUCES MANHOURS SPENT ON
RECOVERY, COMPARED TO SWEEP-IN
• SCREW OR BELT CONVEYOR(S) TO BE
USED WITH DENSE MEDIA SUCH AS
STEEL
• M-SECTION STRIPS TO BE USED WITH
LIGHTWEIGHT MEDIA SUCH AS ALOX
AND GLASS BEADS
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HOPPER RECOVERY SYSTEMS
• SURFACE MOUNTED OR RECESSED
• LOW INITIAL COST
• REQUIRES MANUAL LABOR
– SWEEPING OR SHOVELING
• 120 MESH MEDIA OR COARSER
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3 x 3
HOPPER
RECOVERY
SYSTEM
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3 x 3 HOPPER SWEEP-IN
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BELT RECOVERY
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SCREW RECOVERY
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FLAT-TRAK• LOW PROFILE
– 6-1/2” TALL
– MINIMAL EXCAVATION REQUIRED FOR PIT
– SHORT RAMPS ON SURFACE MOUNTS
• FAST INSTALLATION
– FAST DELIVERY - COMPONENTS SHIPPED
FROM STOCK
– MODULAR FLOOR
– TRACKS WELDED TO STEEL FLOOR
– FRAMES DROP IN PLACE BETWEEN TRACKS
• EASY MAINTENANCE
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Flat Trak Drive
• Booted for protection
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Flat Trak
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FLAT-TRAK
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FLAT-TRAK
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Bucket Elevator
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Underspeed
Monitor
• Used on all bucket
elevators
• Prevents belt breakage
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MEDIA CLEANING
MECHANICAL SYSTEMS• ABRASIVE CLEANER
– BEST FOR HEAVIER MEDIA, I.E. STEEL GRIT
– ROTARY SCALPING DRUM
• REMOVES OVERSIZED PARTICLES / DEBRIS
– HIGH VOLUME STREAM OF AIR
• REMOVES DUST --- TO DUST COLLECTOR
– INCLUDES 10 CUBIC FOOT STORAGE HOPPER
– CAN PROCESS UP TO 15 TONS PER HOUR
– CAN FEED 1, 2, 3, OR 4 BLAST MACHINES
• MULTIPLE POT STAND REQUIRED FOR MORE
THAN ONE BLAST MACHINE
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ABRASIVE
CLEANER
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M-Section
• Pneumatically operated channels
• No vibration or screw conveyors
• Handles all light-weight media
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SWEEP-IN M-SECTION
WITH DRY FILTER
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SWEEP-IN M-SECTION WITH
RP COLLECTOR
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M-SECTION
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M-section Floor
• Full recovery system
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Crossdraft Transition
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RECLAIMER
PNEUMATIC SYSTEMS• CYCLONE SEPARATOR FOR USE WITH
LIGHTWEIGHT MEDIA
• MEDIA, DUST, AND DEBRIS ENTER
RECLAIMER WHERE THEY SPIN
• DUST, FINES, AND BROKEN MEDIA ARE
DRAWN OUT WITH EXHAUST AIR TO DUST
COLLECTOR
• ONLY CLEAN, REUSABLE MEDIA ENTERS
BLAST MACHINE
• RUBBER-LINED TOP SECTIONS ARE NEEDED
WITH AGGRESSIVE MEDIA
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Blast &
Reclaim System
• Reclaim
• Storage Hopper
• Blast Machine
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M-SECTION
RECOVERY & TRANSITION
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M-SECTION FULL-FLOOR(note wall sheeting for improved illumination)
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PRE-ASSEMBLED
BLAST ROOMS
• AVAILABLE FOR ALL TYPES OF
RECYCLABLE MEDIA
– FLAT-TRAK RECOVERY SYSTEM WITH
ABRASIVE CLEANER FOR USE WITH HEAVY
MEDIA, I.E. STEEL GRIT
– M-SECTION RECOVERY SYSTEM WITH
RECLAIMER FOR USE WITH LIGHTWEIGHT
MEDIA, I.E. GLASS BEADS OR ALOX
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Preassembled Room
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Preassembled Room
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BLAST MACHINES
• AUTOMATICALLY REFILLED AFTER
MEDIA HAS BEEN CLEANED
• MEDIA VALVE(S) MUST BE SUITABLE
FOR THE ABRASIVE BEING USED
• BOTTOM CONE MUST ACCOMMODATE
ANGLE OF REPOSE OF MEDIA BEING
USED
• MUST BE EQUIPPED WITH REMOTE
CONTROLS
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VENTILATION
• PROVIDED BY DUST COLLECTOR FAN
• INLET VELOCITY: 500 FT/MIN MINIMUM
• CROSSDRAFT VENTILATION RATES
– 50 FEET/MIN FOR STEEL OR GLASS BEADS
– 80 FEET/MIN FOR ALUMINUM OXIDE
– 100 FEET/MIN FOR SAND OR DUSTY MEDIA
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VENTILATION
• REVERSE-PULSE CARTRIDGE – FILTERS 99.85% – EXHAUSTED AIR IS 0.00218 GRAINS/CUBIC FT– AIR TO CLOTH RATIO OF 2:1 OR LESS– COMPACT, MODULAR UNITS
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Dust Collector
• 4000 - 300000 CFM
• Sloped roof
• Modular construction
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Dust Collector
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DUST COLLECTION
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Dust Collector
• Magnehelic
Gauge
• Pressure Gauge
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DUST COLLECTION / DUCTING
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VENTILATION• TO DETERMINE THE SIZE OF THE DUST
COLLECTOR, USE THIS FORMULA:
CFM of collector = A
Room Width = W
Room Height = H
Ventilation Rate = V
A = W x H x V
For a room 10’ x 10’ x 20’
with steel grit, we use:
A = 10’ x 10’ x 50’/min
A = 5000 CFM
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WORK-PIECE HANDLING
• FORKLIFTS
• RAIL-MOUNTED WORK CARS
• OVERHEAD MONORAILS
• EXTERIOR WORK STATIONS
• TURNTABLES
• HORIZONTAL ROTATION DEVICES
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OVERHEAD MONORAIL
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Workpiece Handling
• Powered
horizontal
rotation
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TURNTABLE/WORKCAR/TRACK
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DROP-DOWN
TURNTABLE
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ELECTRICAL CONTROL PANEL
• INCLUDES MOTOR STARTERS
• AUTOMATED START-UP PROGRAM
– AVOIDS MEDIA JAMMING AND EQUIPMENT
DAMAGE
• HOUR METER MONITORS USAGE
– AIDS IN SCHEDULED MAINTENANCE TASKS
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COMPRESSED AIR SUPPLY
• POWER FOR MANY COMPONENTS
– AUTOMATED FLOORS
– REVERSE PULSE COLLECTORS
– BLASTING OPERATION
• NOZZLE ORIFICE
• NUMBER OF OPERATORS
– SUPPLIED AIR RESPIRATORS
• CONSIDER OTHER DEMANDS ON SHOP AIR
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OPERATOR SAFETY EQUIPMENT
• AIR-FED RESPIRATOR
– APOLLO 60 OR APOLLO 20
• AIR FILTER
– CPF-20 OR CPF-80
• CO MONITOR AND ALARM
– CMS-1
• PROTECTIVE CLOTHING
– BLAST SUITS
• HELMET COMMUNICATION SYSTEMS
– HCS-1
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APOLLO 60 RESPIRATOR
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CPF-20
BREATHING
AIR FILTER
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CARBON MONOXIDE
MONITOR ALARM
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CLEMCO
BLAST
SUIT
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HELMET COMMUNICATIONS
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BLAST & PAINT ROOM
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AIRCRAFT STRIP BOOTHS
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MEDIUM SIZED &
SMALL BOOTHS
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Thank you
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CLEMCO WORLDWIDEThe demand for abrasive blasting
is extensive. Ship building and
maintenance in Singapore,
construction in Saudi Arabia,
refining in Houston… these are but
a few of the major industries
where abrasive blasting has kept
pace with demand calling for
Clemco specialization and
innovation. Manufacturing and
distribution throughout 6
continents… wherever there is
industry, Clemco is there.