Costs for six selected equipment items used in refining construction operations have been surveyed for the 3 years, 2004-06. The accompanying table shows Nelson-Farrar equipment indexes for these items of equipment.
Bubble trays showed the greatest increases in cost, rising from 1,227.8 in first-quarter 2004 fourth-quarter 2006.
Four other items showed more modest increases. The tanks and pressure vessels category rose to 1,030.3 from 804.6 during the 36-month span. Tube stills increased to 600.3 from 439.9. Valves and fittings showed an index gain to 1,883.1 from 1,624.1. Fractionating towers showed a 235-point gain, increasing to 1,233.1 from 998.2 over the 3-year period.
The final category, nonmetallic building materials, showed the least gain during the data compilation period. Beginning index value was 810.1, while the final value was 984.8.
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