David Scott Mclaughlin

Author:

David J. McLaughlin

ISBN #:

0960476032

Author:

David J. McLaughlin

ISBN #:

0960476016

Author:

David J. McLaughlin

ISBN #:

0960476024

Author:

David S. McLaughlin

ISBN #:

0397509863

Author:

David W. McLaughlin

ISBN #:

0306449935

Author:

David McLaughlin

ISBN #:

0738532983

Author:

David McLaughlin

ISBN #:

0738540595

US Patent:

6719952, Apr 13, 2004

Filed:

Feb 21, 2000

Appl. No.:

09/507605

Inventors:

Wen-Ching Yang - Export PA
David F. McLaughlin - Oakmont PA
Timothy L. Francis - Ogden UT

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

B01J 818

US Classification:

422139, 422143, 422211, 422220, 422231

Abstract:

A fluidized bed reactor ( ) for chemically transforming reactants to generate a desired product, having a hollow, elongated, vertically oriented reactor housing ( ) for confining the reaction and an unobstructed collection path ( ) below the reaction zone for funneling the residue of the process to an exit port ( ). A central gas inlet ( ) proximate the bottom of the reaction zone within the housing directs gas parallel to the vertical axis of the housing to maintain the raw materials in suspension. A plurality of individually controlled peripheral gas jets ( ) positioned at least two elevations along the elongated dimension of the reaction housing ( ), and located circumferentially around the housing ( ) at each elevation, introduce gas at an angle to promote mixing of the entrained materials in suspension. The clog-free collection path ( ) below the reaction zone funnels the residue of the process to an exit port ( ) where it is continuously removed by a screw feeder ( ). A gas sparger ( ) below the reaction zone diverts fine agglomerates of the residue back into the reaction stream to increase the efficiency of the process and minimize the residue.

US Patent:

7468106, Dec 23, 2008

Filed:

Mar 7, 2007

Appl. No.:

11/682981

Inventors:

David F. McLaughlin - Oakmont PA, US

Assignee:

Westinghouse Electric Co LLC - Pittsburgh PA

International Classification:

C23G 1/00

US Classification:

134 2, 134 3, 134 26, 134 28, 134 34, 134 35, 134 36, 134 40, 134 41, 134 42, 75715, 148254, 510488

Abstract:

The present invention provides a method for removing niobium-rich second-phase-particle (SPP) deposits from zirconium-niobium alloy components. The method comprises washing a freshly pickled and rinsed zirconium-niobium alloy component with an acidified oxalic acid or ammonium oxalate washing solution. The method of the present invention results in a rapid, efficient and complete removal of surface SPP deposits from the zirconium-niobium alloy component without pitting, leaving behind a clean, shiny surface without the need to use water blasting or mechanical wiping operations.

US Patent:

7556696, Jul 7, 2009

Filed:

Feb 12, 2008

Appl. No.:

12/029527

Inventors:

David F. McLaughlin - Oakmont PA, US
Vanessa R. Yochum - Pittsburgh PA, US

Assignee:

Westinghouse Electric Co LLC - Pittsburgh PA

International Classification:

C23G 1/14

US Classification:

134 2, 134 26, 134 29, 134 30, 134 36, 134 40, 134 42, 148269, 148281, 510367, 510372, 510375, 75715, 106 1405

Abstract:

The present invention relates generally to a process and chemical composition for the removal of adherent niobium-rich second-phase particles (SPPs) from pickled niobium-containing zirconium alloys which includes applying to the alloy surface a chemical composition comprising alkaline hydrogen peroxide; an alkali metal meta-silicate; and a magnesium salt.

US Patent:

7887638, Feb 15, 2011

Filed:

Oct 3, 2008

Appl. No.:

12/245085

Inventors:

David F. McLaughlin - Oakmont PA, US
Vanessa R. Youchum - Pittsburgh PA, US

Assignee:

Westinghouse Electric Co. LLC - Cranberry Township PA

International Classification:

C23G 1/00

US Classification:

134 2, 134 26, 134 29, 134 30, 134 36, 134 40, 134 42, 510254, 510255, 510372, 510375, 510511, 25218628, 25218643

Abstract:

The present invention relates generally to a process and chemical composition for the removal of adherent niobium-rich second-phase particles (SPPs) from pickled niobium-containing zirconium alloys which includes applying to the alloy surface a chemical composition comprising alkaline hydrogen peroxide; an alkali metal meta-silicate; and a magnesium salt.

US Patent:

20090020436, Jan 22, 2009

Filed:

Jul 17, 2007

Appl. No.:

11/778863

Inventors:

Edward J. Lahoda - Pittsburgh PA, US
David F. McLaughlin - Oakmont PA, US

International Classification:

C25B 1/22
C25B 1/02

US Classification:

205554

Abstract:

A multi-pressure hybrid sulfur process () contains at least one electrolyzer unit ()which provides liquid HSOto a preheater/vaporizer reactor () operating at a pressure of from 1 MPa to 9 MPa to form gaseous HSOwhich is passed to a decomposition reactor () operating at a pressure of from 7 MPa to 9 MPa, where decomposed HSOis passed to at least one scrubber unit () and at least one electrolyzer unit () both preferably operating at a pressure of 0.1 MPa to 7 MPa, where an associated Rankine Cycle power conversion unit () supplies electricity.

US Patent:

48656941, Sep 12, 1989

Filed:

Sep 12, 1988

Appl. No.:

7/242571

Inventors:

Thomas S. Snyder - Oakmont PA
Richard A. Stoltz - Murrysville PA
David F. McLaughlin - Oakmont PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

B01D 300
C01G 2504
C01G 2704
C22B 3414

US Classification:

203 29

Abstract:

This is an improved method for separating hafnium from zirconium of the type where a complex of zirconium and hafnium chlorides and phosphorus oxychloride is prepared from zirconium-hafnium chloride and the complex is introduced into a distillation column, with the improvement comprising: electrochemical breaking of the zirconium of hafnium chloride complex taken from said distillation column to separate product from the complex. The electrochemical breaking of the complex, possibly by reducing zirconium or hafnium, is done in a molten salt bath. Preferably, the molten salt in said molten salt bath consists principally of a mixture of alkali metal and alkaline earth metal chlorides and zirconium or hafnium chloride. The product can be either chloride, metal, or mixed metal and subchloride for further processing.

US Patent:

62529234, Jun 26, 2001

Filed:

Aug 10, 1999

Appl. No.:

9/371720

Inventors:

John M. Iacovino - Murrysville PA
Thomas V. Congedo - Pittsburgh PA
William A. Byers - Murrysville PA
Abdul R. Dulloo - Pittsburgh PA
Frank H. Ruddy - Monroeville PA
David F. McLaughlin - Oakmont PA
Arnold H. Fero - New Kensington PA
Brandon Damon Thomas - San Jose CA
John G. Siedel - Pittsburgh PA

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

G21C 1706
G21C 1707
G21C 17108
G21C 17112
G21C 1906

US Classification:

376272

Abstract:

Detectors are used to monitor the status of spent nuclear fuel storage containers non-invasively while they remain in storage casks. The detectors measure neutron flux and. gamma. -ray flux and may also measure temperature variations of the spent nuclear fuel. The measurements can be accomplished actively or passively, with minimal exposure of individuals to radiation fields or other hazardous conditions. Preferred neutron and. gamma. -ray detectors have a semiconductor active region that is resistant to neutron damage. Incipient structural failures may also be detected using measurements based on electrical continuity, with data being transmitted to an external pickup coil.

US Patent:

49161083, Apr 10, 1990

Filed:

Aug 25, 1988

Appl. No.:

7/236482

Inventors:

David F. McLaughlin - Oakmont PA
Michael C. Skriba - Pittsburgh PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

B01J 2340
B01J 2350
B01J 2372
B01J 2374

US Classification:

502337

Abstract:

A process for producing supported metal catalysts having increased catalytic activity is provided. This process includes the steps of forming a high surface area porous support of a suitable porous material such as alumina or zirconia, dissolving a salt of a selected catalytic metal in an appropriate supercritical fluid solvent, contacting the porous support with the supercritical fluid solution of the catalytic metal salt to impregnate the porous support with the solution so that the catalytic metal salt may be adsorbed on the surfaces of the support, and removing the supercritical fluid solvent by reducing the pressure or increasing the temperature to change the supercritical fluid from the supercritical fluid phase to the gas phase, which may then be recycled for further use. The insoluble catalytic metal salt is deposited in the form of a film on the surfaces of the support. The catalytic metal salt-containing porous support may then be processed conventionally to produce a substantially pure, high activity supported metal catalyst.