Marshall Swift index

Typical methods are those of F. C. Zevnik and R. L. Buchanan [Chem. Eng. Progi , 59, 70-77 (Feb. 1963)] and J. H. Taylor Eng. 6-Proc. Econ., 2, 259-267, 1977). The former is mainly a graphical method of estimating the cost per functional unit (Cp) based on the capacity, the maximum pressure, the maximum temperature, and the materials of construction. The Taylor method requires the determination of the costliness index, which is dependent on the complexity of the process. A simpler method was suggested by S. R. Timms (M.Phil. thesis, Aston University, England, 1980) to give the battery hmits cost for gas phase processes only in U.S. dollars with a Marshall and Swift index of 1000. The simple equation is... 

Table 9-50 gives typical values of the exponent n for many types of equipment. Prices are North American with a Marshall and Swift index of 1000, mainly for carbon steel equipment. 

Cost data for shell-and-tube exchangers from 15 sources were correlated and found to be consistent wrien scaled by the Marshall and Swift index [Woods et al., Can. J. Chem. Eng., 54, 469-489 (December 1976)]. 

Costs of shell-and-tube heat exchangers can be estimated from Fig. 11-41 and Tables 11-13 and 11-14. These 1960 costs should be updated by use of the Marshall and Swift Index, which appears in each issue of Chemical Engineering. Note that during periods of high and low demand for heat exchangers the prices in the marketplace may vary significantly from those determined by this method. 

Marshall Swift Equipment Cost Index, Chem. Engr., McGraw Hill Publishing Co. Published regularly in specific issues. 

A composite index for the United States process plant industry is published monthly in the journal Chemical Engineering, the CPE plant cost index. This journal also publishes the Marshall and Swift index (M and S equipment cost index), base year 1926. The CPE index over a ten-year period is shown in Figure 6.1 b. 

The year chosen as a base is one that is close to normal. War years and periods of inflation or depression are avoided. The Marshall and Swift Index uses 1926 as a base. The Chemical Engineering Plant Cost Index uses an average of 1957-1959, and the Construction Cost Index uses 1913. 

The chemical engineering (CE) index and the Marshall and Swift index are found in each issue of the magazine Chemical Engineering. The Oil and Gas Journal reports the Nelson-Farrar Refinery indices in the first issue of each quarter. The base years selected for each index are generally periods of low inflation so that the index is stable. The derivation of base values is referred to in the respective publications. 

The Marshall and Swift indexes are based on an index value of 100 for the year 1926. These indexes take into consideration the cost of machinery and major equipment plus costs for installation, fixtures, tools, office furniture, and other minor equipment. All costs reported in this text are based on a Marshall and Swift all-industry index of 904 as reported for January 1, 1990 unless indicated otherwise. 

Estimate the fob purchased cost of a stainless steel pulse column when the Marshall Swift (M S) index is 1200. The column is 30 ft high and 2 ft in diameter. Internals are estimated as sieve trays with 1.5-ft spacing. 

Table 15.8 The evolution of Marshall Swift cost index ...

Year Chemical Engineering Fiant Cost Imiex Marshall Swift Eiitiipmenf Cost Index... 

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