Abstract: A guide pole fitting seal for use on floating roof tanks that incorporates a well gasket, pole sleeve, pole wiper, float and float wiper that may be used with guide poles to control emissions from the guide pole fitting. The guide pole seal may permit the product level in the tank to be measured and sampled from inside of the guide pole by removing the float during these operations.

Abstract: Apparatus for, and a method of, withdrawing liquefied cryogenic fuel stored in a primary insulated storage tank at a relatively low pressure and temperature; increasing the pressure of the withdrawn liquefied cryogenic fuel through a heat exchanger to warm the liquefied cryogenic fuel to a subcooled or near saturated liquid condition; and feeding the warmed and pressurized liquefied cryogenic fuel to an insulated tank on a vehicle at a refueling facility, said vehicle using liquefied cryogenic fuel as its fuel and the insulated vehicle fuel tank being adapted to safely contain and store the liquefied cryogenic fuel in liquid form, at an approximate saturated condition.

Abstract: In a drinking water reservoir, a draft tube is positioned above an inlet pipe to carry fresh water and water stored in a lower reservoir portion to an upper reservoir portion where the drinking water is mixed and stagnation of the reservoir contents is reduced. The draft tube can be used with a recycling pump and/or a mechanism for providing compressed gas to create a gas lifter to mix water in the lower storage portion with water in the upper storage portion when fresh water is not being added.

Abstract: Apparatus for discharging an additive into water in a treatment vessel comprises discharging means and means for feeding the additive to the discharging means. The discharging means may comprise a pipe, a nozzle, or a header conduit having a number of outlets. A method for discharging an additive into water in a treatment vessel includes the steps of adjusting the elevation of an outlet in a conduit relative to the treatment vessel and discharging the additive from the outlet in the conduit into water in the treatment vessel.

Abstract: A method and apparatus are disclosed which provide enhanced solids-contacting vessel performance in a vessel in which untreated liquid is injected into a lower portion of the vessel so as to flow in a substantially helical and upward direct to separate the solids from the liquid in a suspended, rotating sludge blanket. The vessel is equipped with an adjustable weir extending substantially radially form the vessel center to its peripheral wall for withdrawing effluent from the vessel from a variety of locations depending upon the flow velocity characteristics of the liquid in the vessel.

Abstract: Apparatus for, and a method of, withdrawing liquefied cryogenic fuel stored in a primary insulated storage tank at a low pressure and at a temperature close to its boiling point; increasing the pressure of the withdrawn liquefied cryogenic fuel and then feeding the pressurized liquefied cryogenic fuel through a heat exchanger to warm the liquefied cryogenic fuel to a subcooled or near saturated liquid condition; and feeding the said warmed and pressurized liquefied cryogenic fuel to an insulated tank on a vehicle at a refueling facility, the vehicle using liquefied cryogenic fuel as its fuel and the insulated vehicle fuel tank being adapted to safely contain and store the said liquefied cryogenic fuel in liquid form, at an approximate saturated condition.

Abstract: The present invention relates to a method and system for storing cold fluid. The system includes a main tank and an auxiliary tank that are in fluid communication, and the auxiliary tank receives vapor and expanding fluid as the cold fluid in the main tank warms thereby avoiding overpressurization of the system.

Abstract: A sealing system for a cylindrical liquid floating roof storage tank includes a primary seal and a secondary seal mounted on a rim extending upwardly from a floating roof. The system for mounting the seals to the floating roof includes a bolt, a retainer for securing the primary seal to the rim, and a nut for securing the secondary seal to the rim, wherein installation or removal or the secondary seal does not compromise the primary seal connection.

Abstract: A method and apparatus for conditioning cryogenic fuel includes providing a primary storage tank for liquefied cryogenic fuel, a vapor storage tank communicating with the primary storage tank for storing vapor withdrawn from the primary storage tank at a higher pressure than the pressure in the primary storage tank, and a conditioning system wherein heat is transferred to the colder, lower equilibrium pressure liquefied cryogenic fuel withdrawn from the primary storage tank. The conditioning system includes a heat exchanger system for transferring heat to the liquefied cryogenic fuel from vapor withdrawn from the vapor storage tank. The vapor is cooled to near saturation temperature in the heat exchanger and is then sparged into liquefied cryogenic fuel flowing through a sparger or mixer chamber disposed downstream of the heat exchanger.

Abstract: A guide pole fitting seal for use on floating roof tanks that incorporates a well gasket, pole sleeve, pole wiper, float and float wiper that may be used with guide poles to control emissions from the guide pole fitting. The guide pole seal may permit the product level in the tank to be measured and sampled from inside of the guide pole by removing the float during these operations.

Abstract: The present invention relates to a ring seal for between a floating roof and a side wall in a liquid and vapor storage tank. The ring seal includes a number of overlapping shoe plates hung from the floating roof by pantagraph hanger assemblies. The pantagraph hanger assemblies urge the shoe plates against the side wall and a gap seal prevents tank vapor loss along a lap joint between adjoining shoe plates.

Abstract: Disclosed are apparatus and methods of remotely detecting leakage into an evacuated space to detect the location of the leak. A number of pressure gauges continually monitoring pressure, rise in pressure and the rate of that pressure rise of the space. The locations nearest a leak will detect the pressure rise earliest in time and will have the highest rate of pressure rise. The distance between any one location and the leak being directly proportional to the time required for the increase in pressure to be observed at the location and inversely proportional to the rate of rise.

Abstract: A method and apparatus are disclosed for improving the available pump net positive suction head in a system for pumping liquid from a storage tank. When the liquid in the system is at or near its boiling point, a pump suction vessel is used to store and cool the liquid. The liquid in the pump suction vessel is kept at a temperature lower than its boiling point by surrounding the vessel with a jacketed space containing liquid from the storage tank. As the liquid in the jacketed space evaporates, the vapor is vented to the storage tank and more liquid is fed into the jacketed space.

Abstract: A method and apparatus for limiting the level of cold liquid within a vessel by sensing the expansion of cold liquid due to ambient heat leak, and venting pressurized vapor from the vessel to reduce the rate of expansion of the cold liquid.

Abstract: A tank seal in accordance with the present invention includes a flexible sheet having a horizontal portion bearing on a tank bottom and a vertical portion extending upwardly from the horizontal portion adjacent the shell of the tank, and the seal includes a rim fixed to the flexible sheet for engaging the seal to the tank shell.

Abstract: This invention relates to a floating roof support for a liquid storage tank that reduces the loss of vapor from the tank and that supports the roof in a low and a high position.

Abstract: Apparatus for, and a method of, withdrawing liquefied natural gas stored in a primary insulated storage tank at a low pressure and at a temperature close to its boiling point; increasing the pressure of the withdrawn liquefied natural gas and then feeding the pressurized liquefied natural gas through a heat exchanger to warm the liquefied natural gas to a subcooled or near saturated liquid condition at a temperature of about -220.degree. F. to -126.degree. F. when at a pressure of about 50 psig to 550 psig; and feeding the said warmed and pressurized liquefied natural gas to an insulated tank on a vehicle at a refueling facility, said vehicle using liquefied natural gas as its fuel and the insulated vehicle fuel tank being adapted to safely contain and store the said liquefied natural gas in liquid form, at an approximate saturated condition at a temperature of about -220.degree. F. to -126.degree. F. and a pressure of about 50 psig to 550 psig.

Abstract: A method comprising feeding a liquefied refrigerant selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane; 1,1,1,2,2,3,3-heptafluoropropane; 1,1,1,2,2,3-hexafluoropropane; 1,1,1,3,3,3-hexafluoropropane; perfluorobutane; and octafluoropropane into direct contact with a volume of aqueous liquid in an enclosed ice making vessel to convert part of the aqueous liquid to ice crystals, without the formation of a water-refrigerant hydrate, by vaporizing the refrigerant by heat exchange with the aqueous liquid.

Abstract: This invention relates to superconducting magnetic storage (SMES) apparatus made of repetitious modular units or modules which support a superconducting electrical magnet and a fluid and which are capable of efficient load transfer and are mass producible. The invention also relates to a method for making a modular SMES apparatus.