Piping analysis

Kummert, R. Stumm,W. (1980) The surface complexation of organic acids on hydrous y-AI2O3. J. Colloid Interface Sd. 75 373—385 Rung, K.H. McBride, M.B. (1989) Adsorption of para-substituted benzoates on iron oxides. Soil Sd. Soc. Am. J. 53 1673-1678 Rung, K.H. McBride, M.B. (1989a) Coordination complexes of p-hydroxybenzoate on Ee-oxides. Clays Clay Min. 37 333-340 Kuntze, H. (1982) Iron clogging in soils and pipes. Analysis and treatment. DVWK Bull. 10. Parey, Hamburg, Berlin, 123 p. 

Flexibility Matrix Method. The systematic analysis of a piping system using elbows and straight pipe sections as building blocks was developed long before the advent of computer technology (qv). In manual calculations, it is essential that the equations be kept at a minimum. Previously, piping analysis basically was concentrated in the flexibility method because of the smaller number of equations involved. The detailed theory is covered in Reference 30. 

The total-cost method does not in general provide a satisfactory means for making most insulation investment decisions, since an economic return on investment is required by investors and the method does not properly consider this factor. Return on investment is considered by Rubin ( Piping Insulation—Economics and Profits, in Practical Considerations in Piping Analysis, ASME Symposium, vol. 69,1982, pp. 27-A6). The incremental method used in this reference requires that each incremental in of insulation provide the predetermined return on investment. The minimum thickness of installed insulation is used as a base for calculations. The incremental installed capital cost for each additional V2 in of insulation is determined. The energy saved for each increment is then determined. The value of this energy varies directly with the temperature level [e.g., steam at 538°C (1000°E) has a greater value than condensate at 100°C (212°F)]. The final increment selected for use is required either to provide a satisfactory return on investment or to have a suitable payback period. 

Reconsider Ex. 2.2 for (1) fiberglass (k = 0.04 W/m-K), (2) plaster (gypsum) (k S 0.20 W/m-K). For each material we wish to determine the thickness of insulation for which the heat loss from the pipe is (a) maximum, (b) equal to that from the bare-pipe analysis. 

Piping Analysis, Air Panel and Duct Analysis, Electrical Raceway Analysis... 

Armour wire friction coefficient used in local pipe analysis models... 

Plate or beam analysis Pipe analysis Buckling analysis Bearing analysis... 

Pipe analysis Hydrostatic design stress Tfensile stress at 5deld Tfensile creep ruptm stress Compression strength Critical stress intensity factor... 

V. Piping equipment Depends on the piping analysis — variable Bt... 

KUNTZE H. 1982. Iron clogging in soils and pipes. Analysis and treatment. Bulletin of the German Association for water resources and land improvement, (DVWK) Bonn. Published by Verlag Paul Parey, Hamburg. 

The codes for the SEP-24 piping analysis procedures needs to be justified and the comments by the DOE staff have to be addressed. 

Equipment nozzle loads obtained from the piping analysis shall be used in the equipment and equipment support analysis. The equipment nozzle loads shall be obtained from the coupled equipment and piping analysis if the equipment or equipment support is flexible. 

The loads at the piping anchor to the equipment nozzle shall be used as the equipment nozzle loads if the equipment and its supports are rigid, or if the equipment nozzle stiffness is modeled in the piping analysis. 

Before conducting a repair on a corroded pipe, analysis must be done to determine whether a repair is sufficient to restore the strength of the riser. This can be evaluated using the codes provided in ASME B31G (1991). The standard used here is compliant for onshore pipelines where the equations are only functions of the corrosion dimensions and internal pressure. Nevertheless, it provides a basis for determining the required thickness of the composite laminate. 

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