WORK AREA: India.Catleia Oil Co.(Petrobras subsidiary)PETROBRAS VIRIG DESIGN: RG LeTourneau, Inc.CONSTRUCTION: Davie Shipbuilding Ltd., Canada, 1982.PERFORMANCE: Water Depth--230''; Drilling Depth--23,000''.QUARTERS: 84 persons.HULL: 243'' x iowaauctionchippershredder 200'' x 26''.VARIABLE LOAD: 1,997 t.HELIPORT: 70'' dia.STORAGE: Mud & Cmt Bulk--7,200; LiquidMud--1,416 bbl; Fuel--2,970 bbl; Water forDrilling--6,657 bbl; Potable Water--2,760 bbl.DRILLING EQUIPMENT: Drawworks--Oilwell E-3000;Pumps--Two Oilwell A-1700-PT, triplex;

The cast, or pour, iowaauctionchippershredder method is one in which the area is made completely watertight by use of forms (i.e. ladle walls and floor). The mix would contain more water than a trowel application mix. A cast refractory should be thoroughly worked into place, with internal air bubbles removed by rodding or vibrating. The best method is to use vibratory equipment, since it encourages the material to flow freely iowaauctionchippershredder and completely fills the form or box. Vibrating also permits working with a stiffer mix (less water). However, hand rodding--with a shovel, rod, ice scraper or pole--will suffice if done thoroughly. Working out all the air strengthens the material and reduces porosity. The action of vibration or rodding sets the refractory particles in motion, reducing the friction between the particles and giving the mixture the texture of a thick fluid. Internal vibrating or rodding does the most consistent job, but external vibration is also effective. Although vibration equipment is available for refractories, it can often be improvised with equipment already on hand to vibrate the mass externally. An air hammer held against the form can do a good job in many cases. So may a nut runner or other pneumatic vibratory tool. Even hammering the form with a hand sledge will do if accompanied iowaauctionchippershredder by hand rodding. In all cases, be sure the material is worked near the forms. That is where air bubbles collect.

Rating the riskIn Dane County, Wisconsin, the double-walled iowaauctionchippershredder tanks are the containment system of choice, according to Bob Williams, marketing manager for the DanCo iowaauctionchippershredder ES Co-op. "With this system, you don''t get a buildup of water in the containment dike," he says. While he has installed five of the fuel tank systems in the past year, Williams admits many producers are hesitant to make the investment. "We try to get them to go with some type of containment because long-term we think they will need it. We provide financing to ease the cost," he says.

©2003 www.chippershredder.net All rights reserved.