1. CLEAN WORLD INNOVATIONS
Tank Cleaning Services

2. WE OFFER:
• Turnkey Operation
• Global experience
• On-site Support
• Joint planning
• Rapid Turnaround
• Resource Recovery

3. COMPREHENSIVE TURNKEY PLAN
Turn-key critique Scope Development
Job Execution/ Quantitative Analysis
Supervision
Environmental and
Pre- Safety Requirements
Inspection
Develop Material Assessment
Procedures/
Design Program
Costing
Scheduling

4. WHY CLEAN TANKS?
• Repair leaks
• Recover storage capacity
• Eliminate crude unit upsets
• Floating roof seal replacement
• Floor coating
• Inspection

5. BENEFITS
• Reduces turnaround time
• Reduces labor costs
• Reduces air emissions
• Reduces danger of explosive and toxic vapors - lowers H2S & TEL
levels
• Restores equipment efficiency/capacity

6. BENEFITS
• Minimizes waste
• Provides virtually oil-free
surfaces and gas-free environment ready for entry
• Water has no impact on wastewater treatment plant
• Water has low BOD, COD, and TOC levels (dependent on sludge
characteristics)

7. MECHANICAL SUPPLIER
• Experience working with independent mechanical and turnaround
contractors in various regions.
• Experience in coordinating and running projects with customer
specific maintenance contractors

8. MECHANICAL CONTRACTOR
REQUIREMENTS
• Equipment specifically designed for chemical cleaning
• Capability to perform several circulation loops within one unit
• Self-contained equipment
• Equipment meets all customer requirements
• Closed-loop circulation
• Ability to process sample during circulation

9. WASTE MINIMIZATION INCENTIVES
• Landfarm restrictions mounting
• RCRA legislation compliance issues
• Reduce disposal costs
• Valuable crude oil recovery

10. TRADITIONAL METHODS-SLUDGE
REMOVAL
• Shovel or vacuum truck
• Front end loader
• Remote mechanical devices
• Power spray nozzle

11. TRADITIONAL METHODS-
HYDROCARBON RECOVERY
• Move to another crude tank
• Mix with crude in vat
• Belt press
• Centrifuge
• Separation tank

12. CWI CAPABILITIES
• Storage Tank Cleaning
• Patented Warm Water Method
• Proven experience
• Storage Tank Degassing
• Patented degassing chemistry
• Proven experience

13. TANK CLEANING-ONES APPROACH
PATENTED WARM WATER METHOD
EVALUATION
• Obtain representative sample
• Determine job requirements
• Determine limitations
• Tank cleaning beaker simulation
• Customized cleaning program

14. CRITERIA FOR SUCCESS
• Obtain a representative sample
• Apply proper heat and chemistry
• Develop processes to separate recovered hydrocarbon, water, and
solids

15. LABORATORY TESTING FOR THE
HYDROCARBON RECOVERY AND WASTE
MINIMIZATION PROCESS
BEAKER WITH SLUDGE

16. LABORATORY TESTING FOR THE
HYDROCARBON RECOVERY AND WASTE
MINIMIZATION PROCESS
ADDITION OF SOLUTION

17. LABORATORY TESTING FOR THE
HYDROCARBON RECOVERY AND WASTE
MINIMIZATION PROCESS
ADDITION OF DILUENT, START TEST

18. LABORATORY TESTING FOR THE
HYDROCARBON RECOVERY AND WASTE
MINIMIZATION PROCESS
BEAKER SIMULATION IN PROGRESS

19. LABORATORY TESTING FOR THE
HYDROCARBON RECOVERY AND WASTE
MINIMIZATION PROCESS
END OF OF BEAKER SIMULATION

20. APPLICATION METHOD - CRUDE
STORAGE TANK
• Pump crude from tank
• Floating Roof - Lower roof to lowest level
• Add equal volumes of water-chemical solution, and diluent
• Floating Roof - Allow roof to float (2 ft)
• Heat and circulate the cleaning solution
• When complete, initiate customized recovery program

21. MONITORING
• In Process Monitoring
• Emulsification Progress
• Temperatures
• Suspended Solids
• Free Oil
• Water-Wet Solids

22. CRUDE STORAGE TANK - FIXED OR
FLOATING ROOF
IDENTIFY EXISTING
PUMPS & HEATING SLUDGE
SOURCES
PUMP TANK TO LOWEST LEVEL
USING EXISTING DRAIN LINES

23. CRUDE STORAGE TANK - FIXED OR
FLOATING ROOF
CLEANING
DILUENT
SOLUTION
SLUDGE
ADD WATER, CHEMICAL, AND DILUENT

24. CRUDE STORAGE TANK - EXTERNAL
CIRCULATION
DILUENT
CLEANING SOLUTION
WATER CUTS
CHANNEL
SLUDGE

25. EXTERNAL CIRCULATION
OF WATER USING CARGO HOSE

26. MANWAY WITH HARD PIPE

27. MANWAY CONNECTIONS FOR
WATER CIRCULATION

28. MANIFOLD USED FOR
CIRCULATION PATTERN

29. SMALL EXCHANGERS AND PUMPS
250,000 BBL TANK

30. CRUDE STORAGE TANK - CLEANING
CONFIGURATION
POSSIBLE TANK CIRCULATION AND HEATING ARRANGEMENTS

31. CRUDE STORAGE TANK - CLEANING IN
PROGRESS
CUTTER OIL
SLUDGE LIFTING
FROM TANK FLOOR
PENETRATING
CLEANING
SOLUTION
CHEMICAL PENETRATES THE SLUDGE
AND LIFTS IT OFF THE FLOOR

32. CRUDE STORAGE TANK - MONITORING
PROGRESS

33. CRUDE STORAGE TANK - MONITORING
THROUGH SAMPLE WELL

34. CRUDE STORAGE TANK - MONITORING
THROUGH THE ROOF

35. MONITORING PROGRESS

36. CRUDE STORAGE TANK - END OF
PROCESS
RECOVERED OIL
READY FOR
PROCESSING
SOLIDS ARE RECOVERED HYDROCARBON INITIATE RECOVERY
HYDROCARBON AND DILUENT PROCESS
FREE
SPENT CLEANING SOLUTION
SOLIDS

37. CASE STUDY #1
 Tank Capacity - 500,000 bbl
 Tank Diameter - 273 ft
 Sludge Volume - 5.5 ft (60,000 bbl)

38. CRUDE STORAGE TANK SLUDGE SAMPLE
Component % by Volume
Hydrocarbon 73.3
Water 24.6
Sediment 2.1
Recoverable Oil = 44,000 bbl

39. CRUDE STORAGE TANK CLEANING IN
PROGRESS

40. CRUDE STORAGE TANK CLEANING
RESULTS
• Tank cleaned in 21 days
• 43,500 bbl of oil recovered
• 98.9% oil recovery
• Net = $70,000 after expenses

41. CRUDE STORAGE TANK 500-3 INTERNALS

42. CASE STUDY #2
 Tank Capacity - 400,000 bbl
 Tank Diameter - 224 ft
 Sludge Volume - 5 ft (35,900 bbl)

43. CASE STUDY #2 - CUSTOMER GOALS
• Eliminate crude unit upsets
• Restore storage tank capacity
• Monitor crude deliveries
• Three week window

44. CASE STUDY #2 - CUSTOM PROCEDURE
• Sludge sample obtained
• Sample tested using beaker simulation
• Located existing pumps and exchangers
• Light cycle oil used as diluent

45. CASE STUDY #2 -TANK BOTTOM SLUDGE
COMPOSITION
Component % by Volume
Hydrocarbon 92
Water 6.7
Sediment 1.3
Recoverable Oil = 33,000 bbl

46. CASE STUDY #2 - RESULTS
• Back in service in 17 days
• Average 1” solids on bottom (75 bbl)
• Tank entry not required
• 33,000 bbl of oil recovered
• 99.9% recovery

47. CASE STUDY #2 - ECONOMIC RESULTS
Improved technique (Dollars)
Item/Basis
495,000
Income
0
0
Recovered Hydrocarbon: 3,000
13,200
33,000 bbl at 15$/bbl 74,800
1,500
Expenses 17,800
Sludge Disposal - None 0
$103,100
$391,900
Tank Downtime - None
Manpower - Estimate

48. STORAGE TANK DEGASSING

49. TRADITIONAL METHODS FOR
DEGASSING
OPEN MANWAYS
• Produces vapors
• Several weeks to degas
• Environmentally unsound

50. APPLICATION METHOD - DEGASSING
• Pump out the tank
• Remove the access doors
• Apply cleaning/degassing solution
• Use degassing solution EC9008A
• PORTA-FEED Jr. per 100,000 bbl tank capacity
• Monitor the process

51. MONITORING
• In Process Monitoring
• Emulsification Progress
• Temperatures
• Suspended Solids
• Free Oil
• Water-Wet Solids

52. APPLICATION METHOD - DEGASSING
FIXED ROOF
DEGASSING PROCEDURE
• Remove product
• Vacuum last 6 - 8 inches
FIXED ROOF • Educt water-chemical
solution
DRAIN

53. APPLICATION METHOD -
DEGASSINGFIXED NOZZLE
DEGASSING PROCEDURE
• Remove product
• Vacuum last 6 - 8 inches
• Use Butterworth or Gammajet
to spray cleaning solution
FIXED ROOF
DRAIN

54. APPLICATION METHOD -
DEGASSINGFLOATING ROOF
DEGASSING PROCEDURE
• Remove product
• Lower roof
FLOATING ROOF • Educt water-chemical
degassing solution
DRAIN

55. EDUCTOR

56. DEGASSING CASE STUDY - PROBLEM
• Large Gulf Coast Refiner needed to enter a 180,000 barrel crude
storage tank.
• Previously required taking the tank out of service to clean with
conventional methods
• Air ventilation was taking a significant amount of time

57. DEGASSING CASE STUDY - PROCESS
• Site review from the local team resulted in applying the following
process:
• Tank drained of HC and filled with several feet of water to float
excess HC for removal.
• Flush water drained from tank
• Opening of many ways showed 3-4% of HC present in the tank
atmosphere.

58. DEGASSING CASE STUDY - PROCESS
• ONES implemented the use of a special feed system to apply a
solution of the ONES degassing chemical.
• Spray nozzle was used for the chemical application.
• Walls, roof, internal support and structures were thoroughly rinsed
from each of the manways

59. DEGASSING CASE STUDY - RESULTS
• After 6 hours the solution was drained to the API separator
• No additional cleaning was necessary
• Atmosphere within the tank was completely free of Hydrocarbon
vapors in less than ONE day. Therefore providing a SAFE environment
• Refiner able to begin immediate maintenance
• Reduced total cleaning costs
• No waste water problems were encountered