... Accession Number : ADD324149. Title : ON STREAM INSPECTION OF RISER PIPES USING AN ULTRASONIC INSPECTION TOOL. ...

This design review examined the design documents contained in a notebook prepared for the final design review of the multiport riser assembly. This assembly will support the Hydrogen Mitigation Test program for mitigation of safety issues for Hanford Waste Tank 241-SY-101. The purpose of the Multiport Riser is to provide multiple ...

The simulated riser installation field tests demonstrated that new access ports (risers) can be installed safely, quickly, and economically in the concrete domes of existing underground single- shell waste storage tanks by utilizing proven rotary drilling equipment and vacuum excavation techniques. The new riser ...

This patent describes a method for storing and retrieving a riser pipe, comprising the steps of: providing an upright annular magazine comprised of an inside annular wall and an outside annular wall, the magazine having an open top; storing the riser pipe in a substantially vertically oriented position within the annular magazine; and ...

Many of the single shell storage tanks (SSTs) on the Hanford site appear to have central 42-in. risers which could be used as access ports for the Long Reach Manipulator (LRM). However, about half of the tanks are known to not have a central 42-in. riser and it has recently been discovered that of the tanks whose drawings indicate ...

A method is described of arresting and preventing further movement of the elements forming the upper end of a riser relative to a floating vessel therethrough. The vessel is provided with well drilling equipment including a derrick with associated drill string lift equipment, an elongated vertical riser provided with a riser brake ...

Underground storage tanks with 2 inches to 3 inches diameter access ports at the Department of Energy's Savannah River Site have been used to store radioactive solvents and sludge. In order to close these tanks, the contents of the tanks need to first be quantified in terms of volume and chemical and radioactive characteristics. To provide information on the volume of ...

... Accession Number : ADA175375. Title : Selective Withdrawal Riser for Cave Run Lake. Descriptive Note : Final rept. Nov 80-Sep 82,. ...

... Accession Number : AD0801121. Title : E-5 CAPSULE MAIN PARACHUTE RISER TROUGH,. Corporate Author : LOCKHEED ...

... Accession Number : ADD442983. Title : Development of Buoyancy for Flexible Production Riser System for North Sea Sun Oil Balmoral Field,. ...

The simulated riser installation field tests demonstrated that new access ports (risers) can be installed safely, quickly, and economically in the concrete domes of existing underground single- shell waste storage tanks by utilizing proven rotary drilling...

This technical release (TR) discusses procedures for structural analysis and design of portions of risers at and near the wall-to-footing connection assuming openings in both endwalls framed by wall fittings with equal diameters. Applicable design criteri...

This patent describes an improvement in a marine riser adapted to be suspended from a vessel and releasable connected at its lower end to a subsea terminal. It comprises: a body thereabout having passageway means therethrough opening to each end of the body for disrupting smooth flow along the length of the riser and thereby damping ...

A riser breaking clamp apparatus is described for use in a floating vessel having a substantially centrally positioned vertical hull opening therethrough. The vessel is provided with well drilling equipment, including an elongated vertical riser. The riser extends in tension down through the hull ...

A method is described of supporting the weight of an elongated vertical marine riser in a body of water by use of a buoyant member having a vertical slot defined longitudinally therethrough. The buoyant member positioned within a vertical opening is defined through a floating platform and is capable of vertical movement therein. The floating platform is ...

A buoyant riser system for use in a deep water offshore drilling environment is anchored by a system of compliant guys below the active weather zone of the sea. A controllably buoyant housing of the system is submerged at a depth that is readily accessible to divers and includes a blow-out preventer (BOP) from which a suspended ...

An apparatus is described for sealing the annulus defined between a substantially cylindrical rotatable first riser assembly and plug combination disposed in a substantially cylindrical second riser assembly and plug combination of a nuclear reactor system. The apparatus comprises a flexible metal member having a first side attached to one of the ...

An apparatus for sealing the annulus defined between a substantially cylindrical rotatable first riser assembly and plug combination disposed in a substantially cylindrical second riser assembly and plug combination of a nuclear reactor system. The apparatus comprises a flexible metal member having a first side attached to one of the ...

A system is described for securing a flexible marine riser to a conduit system of a floating structure supported on the water surface, the system comprising: means arranged at an upper end of the rise for connecting the riser to a terminal end of the conduit system on the floating structure, comprising a stop shoulder having a larger width than the ...

A sampling program is being developed to characterize the 149 underground SSTs on the Hanford Site. The sampling effort will require access to the tank interior in a minimum of two locations per tank. Some of the risers suitable for sampling are either un...

The work focused on developing the conceptual level details and analysis of CVAR design, and assessing risks associated with its installation and in-service operations, and comparing with alternative riser designs. This report summarizes the results of th...

Open Access At AArhus university Make your publications visible and accessible on the web Open access #12;Open Access at aarhus university2 Open Access is about free and direct access to ...

Flotation means for a subsea well riser are described. The riser is run from a floating vessel and includes one or more buoyancy chambers open in the lower portions to the sea. A gas injection line runs from the vessel to each of the chambers for injecting gas under pressure into each such chamber. Flow control means control the ...

The Tank 101-SY multiport riser assembly in the 241-SY-101 waste tank will replace the existing 42 inch riser with four smaller ports. Each smaller port can be used independently to access the tank interior with equipment and instruments needed to mitigat...

... There are two vertical 4 foot by 1 foot openings at the top of the riser structure, which allow water to flow into the chamber and out the 16 inch RCP. ...

A riser having a 90/sup 0/ bend at its lower end is installed at an offshore platform by mounting the riser within casing with a horizontal leg from the 90/sup 0/ bend extending through a hole in the wall of the casing and lowering the casing through guide funnels extending inwardly from the framework of the platform. The guides have ...

This paper describes a work enclosure adapted to be positioned about marine support member. It comprises: at least two sections, each section being open at the top and having a bottom which has an opening therethrough; means for securing the sections together in a watertight, closed position around the support member whereby the ...

The Highlander field is being developed using a remote subsea production centre, tied-back to processing facilities on the Tartan platform. Weight limitations on the Tartan jacket prevented the tie-back of the subsea pipelines using conventional tie-on riser access systems. Therefore, a system was required which would not impose any vertical or ...

The Hanford Waste Vitrification Plant (HWVP) is designed to solidify high level radioactive waste by converting it into stable borosilicate after mixing with glass frit and water. The heart of this conversion process takes place in the glass melter. The life span of the existing melter is limited by the possible premature failure of the heater assembly, which is not remotely replaceable, in the ...

A vapor generator incorporated in a nuclear power plant for ship propulsion has a lower drum containing a bank of heat exchange tubes and upright risers extending between the top and the bottom of an upper drum. These risers open at their upper ends into a vapor and liquid compartment situated within the upper drum and ...