welded repairs and alterations to anhydrous ammonia ... only...presentation by: greg mcrae tank...
TRANSCRIPT
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Welded Repairs and Alterations to Welded Repairs and Alterations to Anhydrous Ammonia Nurse TankAnhydrous Ammonia Nurse TankAnhydrous Ammonia Nurse TankAnhydrous Ammonia Nurse Tank
Presentation by: Greg McRaePresentation by: Greg McRae
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Tank failed hydro test in CanadaTank failed hydro test in Canada
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The Fertilizer InstituteThe Fertilizer Institute--------The Fertilizer InstituteThe Fertilizer Institute
200 000 N t k i th i d t 200 000 N t k i th i d t 200,000 Nurse tanks in the industry, 200,000 Nurse tanks in the industry, 60% of which, will not pass 60% of which, will not pass i tii tiinspection.inspection.
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C d d St d d f N C d d St d d f N Codes and Standards for Nurse Codes and Standards for Nurse TanksTanks
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U.S. Department of TransportationU.S. Department of TransportationCode of Federal RegulationsCode of Federal Regulations Title 49Title 49Code of Federal RegulationsCode of Federal Regulations-- Title 49Title 49
Subpart GSubpart G-- Gases, Preparation and Packaging, Gases, Preparation and Packaging, paragraph 173.315paragraph 173.315--(m)(m)ggCargo tanks (commonly know as a Nurse tanks)Cargo tanks (commonly know as a Nurse tanks)(1) Has a minimum design pressure of 250 psig and meets the (1) Has a minimum design pressure of 250 psig and meets the
requirements of the edition of the ASME code in effect at requirements of the edition of the ASME code in effect at the time it was manufactured and marked.the time it was manufactured and marked.
(2) Equipped with a safety relief valve (2) Equipped with a safety relief valve (3) Is painted White or Aluminum(3) Is painted White or Aluminum(4) Has a capacity of 3000 gallons or less(4) Has a capacity of 3000 gallons or less(5) Filling to a density of not greater than 56 percent (5) Filling to a density of not greater than 56 percent (5) Filling to a density of not greater than 56 percent (5) Filling to a density of not greater than 56 percent (6) Is securely mounted on a farm wagon; and(6) Is securely mounted on a farm wagon; and------------
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ASME Section VIII, div. 1ASME Section VIII, div. 1-- Pressure Vessel CodePressure Vessel Code
Design, Fabrication, Welding and Inspection, Third Design, Fabrication, Welding and Inspection, Third iiParty InspectionParty Inspection
Joint typeJoint type, , Joint Efficiency,Joint Efficiency, Degree of RadiographyDegree of Radiography, , Hydrostatic Test PressureHydrostatic Test Pressure
Material selectionMaterial selection------------
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ANSI KANSI K 61 1 61 1 C d G A i ti (GC d G A i ti (G 2 1)2 1)ANSI KANSI K--61.1 61.1 Compressed Gas Association (GCompressed Gas Association (G--2.1)2.1)Requirements for Handling and Storage of Anhydrous Requirements for Handling and Storage of Anhydrous
AmmoniaAmmonia
2 Definitions2 Definitions2 9 Repair The work necessary to restore a 2 9 Repair The work necessary to restore a 2.9 Repair. The work necessary to restore a 2.9 Repair. The work necessary to restore a
container, cylinder, or system to a safe and container, cylinder, or system to a safe and satisfactory operating condition provided there is, in satisfactory operating condition provided there is, in all cases, all cases, no deviation from the original design.no deviation from the original design.
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Codes and Standards for Nurse TanksCodes and Standards for Nurse Tanks
State Rules and Regulations such as, Indiana State Rules and Regulations such as, Indiana Agricultural Ammonia LawAgricultural Ammonia LawAgricultural Ammonia LawAgricultural Ammonia Law
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NBIC is used to properly document repairs and NBIC is used to properly document repairs and p p y pp p y palterations using the appropriate forms and alterations using the appropriate forms and applying the proper nameplate.applying the proper nameplate.
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Design ChangesDesign ChangesDesign ChangesDesign Changes
Significant changes that will affect Significant changes that will affect g gg grepairs and alterationsrepairs and alterations
(1) In(1) In--Motion Radiography Motion Radiography (1989)(1989)(2) Change in the joint efficiency from .85 (2) Change in the joint efficiency from .85
to 1 to 1 (3) Design Margin 4:1 to 3.5:1(3) Design Margin 4:1 to 3.5:1(4) Hydrostatic pressure 375 to 325 psi(4) Hydrostatic pressure 375 to 325 psi(4) Hydrostatic pressure 375 to 325 psi(4) Hydrostatic pressure 375 to 325 psi
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Thanks to the National Board and Thanks to the National Board and Thanks to the National Board and Thanks to the National Board and thanks to all you chief for your time thanks to all you chief for your time this morning this morning this morning. this morning.