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Mark A Havstad

from Esparto, CA
Age ~68
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Also known as:
Mark Cynthia Havstad
Phone and address:
24490 County Road 22A, Esparto, CA 95627
(530) 848-9081
Related to:
Andrea N Reddick, 39Carol S Reddick, 62Albert BeaupreMegan L Havstad, 40Cynthia M Havstad, 68Joyce C Havstad, 42Madalyn E BeaupreDean A Beaupre, 81Emma C Havstad, 37Louise A Havstad, 76
Connected to:
Jeffrey R Havsy, 55Scott L Havsy, 71Steven C Havsy, 75Glenn B Havumaki, 76Anastasia Haw, 32Geoffrey M Haw, 39Glenda S Haw, 78Jennifer W Haw, 72Marvin T Haw, 88Nick Haw, 49

Mark Havstad Phones & Addresses

  • 24490 County Road 22A, Esparto, CA 95627 (530) 848-9081
  • 513 Isla Pl, Davis, CA 95616 (530) 758-7128
  • 420 Balboa Ave, Davis, CA 95616 (530) 758-7128
  • 1539 De Leon Way, Livermore, CA 94550
  • Oakland, CA
  • San Jose, CA
  • Yolo, CA

Resumes

Resumes

Mark Havstad Photo 1

Consulting Engineer

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Location:
24490 County Rd, Esparto, CA
Industry:
Research
Work:
Lawrence Livermore National Laboratory Feb 1981 - Apr 2014
Mechanical Engineer
Feb 1981 - Apr 2014
Consulting Engineer
Education:
Stanford University 1986 - 1991
Colorado State University 1978 - 1980
Masters, Mechanical Engineering Yale University 1974 - 1978
Bachelors, Applied Science, Engineering
Skills:
C++
Engineering
Mechanical Engineering
Matlab
R&D
Materials Science
Simulations
Finite Element Analysis
Ansys
Heat Transfer
Physics
Numerical Analysis
Mathematical Modeling
Systems Engineering
Experimentation
Fortran
Energy
Mark Havstad Photo 2

Mark Havstad

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Location:
Esparto, CA
Work:
Lawrence Livermore National Laboratory Feb 1981 - Apr 2014
Engineer

Business Records

Name / Title
Company / Classification
Phones & Addresses
Mark Havstad
Owner
Havstad Water and Energy
Consult Teach and Demonstrate
24490 County Rd 22A, Esparto, CA 95627

Publications

Us Patents

Mems-Based Fuel Cells With Integrated Catalytic Fuel Processor And Method Thereof

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US Patent:
20040072039, Apr 15, 2004
Filed:
Jul 1, 2003
Appl. No.:
10/612226
Inventors:
Alan Jankowski - Livermore CA, US
Jeffrey Morse - Martinez CA, US
Ravindra Upadhye - Pleasanton CA, US
Mark Havstad - Davis CA, US
Assignee:
The Regents of the University of California
International Classification:
H01M008/06
H01M008/12
B05D005/12
US Classification:
429/019000, 429/030000, 429/020000, 429/038000, 429/017000, 427/115000, 204/192150
Abstract:
Described herein is a means to incorporate catalytic materials into the fuel flow field structures of MEMS-based fuel cells, which enable catalytic reforming of a hydrocarbon based fuel, such as methane, methanol, or butane. Methods of fabrication are also disclosed.

High Aspect Ratio Chemical Microreactor

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US Patent:
20050207953, Sep 22, 2005
Filed:
Jul 20, 2004
Appl. No.:
10/896413
Inventors:
Ravindra Upadhye - Pleasanton CA, US
Jeffrey Morse - Martinez CA, US
David Sopchak - Livermore CA, US
Mark Havstad - Davis CA, US
Robert Graff - Modesto CA, US
International Classification:
B01J019/00
US Classification:
422240000, 422129000
Abstract:
A chemical microreactor with a high aspect ratio. In one embodiment the chemical microreactor has a chemical microreactor section with channels having a height and with spacings having a width. There is a high aspect ratio of the height to the width. The high aspect ratio in one embodiment is more than substantially 5:1. The high aspect ratio in another embodiment is more than substantially 10:1. The high aspect ratio another embodiment is more than substantially 15:1. The high aspect ratio in one embodiment is substantially 20:1.

Direct Reactor Auxiliary Cooling System For A Molten Salt Nuclear Reactor

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US Patent:
20210210222, Jul 8, 2021
Filed:
Oct 26, 2020
Appl. No.:
17/080332
Inventors:
- Bellevue WA, US
Daniel Flowers - Sebastopol CA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
International Classification:
G21C 3/54
G21C 15/06
G21C 11/06
G21C 15/26
Abstract:
This disclosure describes various configurations and components of a molten fuel fast or thermal nuclear reactor for managing the operating temperature in the reactor core. The disclosure includes various configurations of direct reactor auxiliary cooling system (DRACS) heat exchangers and primary heat exchangers as well as descriptions of improved flow paths for nuclear fuel, primary coolant and DRACS coolant through the reactor components.

Molten Fuel Reactor Thermal Management Configurations

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US Patent:
20200279660, Sep 3, 2020
Filed:
Mar 19, 2020
Appl. No.:
16/824125
Inventors:
- Bellevue WA, US
Daniel Flowers - Bellevue WA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Christopher J. Johns - Tacoma WA, US
Brian C. Kelleher - Seattle WA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
Assignee:
TerraPower, LLC - Bellevue WA
International Classification:
G21C 1/32
G21C 1/22
G21C 15/243
G21C 1/03
G21C 15/02
Abstract:
Configurations of molten fuel salt reactors are described that allow for active cooling of the containment vessel of the reactor by the primary coolant. Furthermore, naturally circulating reactor configurations are described in which the reactor cores are substantially frustum-shaped so that the thermal center of the reactor core is below the outlet of the primary heat exchangers. Heat exchanger configurations are described in which welded components are distanced from the reactor core to reduce the damage caused by neutron flux from the reactor. Radial loop reactor configurations are also described.

Thermal Management Of Molten Fuel Nuclear Reactors

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US Patent:
20180137944, May 17, 2018
Filed:
Nov 15, 2017
Appl. No.:
15/813901
Inventors:
- Bellevue WA, US
Anselmo T. Cisneros - Seattle WA, US
Daniel Flowers - Sebastopol CA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
Assignee:
TerraPower, LLC - Bellevue WA
International Classification:
G21C 15/06
G21C 11/06
G21C 3/54
Abstract:
This disclosure describes various configurations and components of a molten fuel fast or thermal nuclear reactor for managing the operating temperature in the reactor core. The disclosure includes various configurations of direct reactor auxiliary cooling system (DRACS) heat exchangers and primary heat exchangers as well as descriptions of improved flow paths for nuclear fuel, primary coolant and DRACS coolant through the reactor components.

Molten Fuel Reactor Thermal Management Configurations

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US Patent:
20170316840, Nov 2, 2017
Filed:
May 2, 2017
Appl. No.:
15/584659
Inventors:
- Bellevue WA, US
Daniel Flowers - Bellevue WA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Christopher J. Johns - Tacoma WA, US
Brian C. Kelleher - Seattle WA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
Assignee:
TerraPower, LLC - Bellevue WA
International Classification:
G21C 15/02
G21C 3/54
G21C 1/32
G21C 1/32
G21C 15/28
G21C 15/25
Abstract:
Configurations of molten fuel salt reactors are described that allow for active cooling of the containment vessel of the reactor by the primary coolant. Furthermore, naturally circulating reactor configurations are described in which the reactor cores are substantially frustum-shaped so that the thermal center of the reactor core is below the outlet of the primary heat exchangers. Heat exchanger configurations are described in which welded components are distanced from the reactor core to reduce the damage caused by neutron flux from the reactor. Radial loop reactor configurations are also described.

Molten Fuel Reactor Cooling And Pump Configurations

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US Patent:
20170316841, Nov 2, 2017
Filed:
May 2, 2017
Appl. No.:
15/584642
Inventors:
- Bellevue WA, US
Robert A. Corbin - North Bend WA, US
Daniel Flowers - Bellevue WA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Christopher J. Johns - Tacoma WA, US
Brian C. Kelleher - Seattle WA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
Assignee:
TerraPower, LLC - Bellevue WA
International Classification:
G21C 15/25
G21C 3/54
G21C 1/32
G21C 15/02
G21C 1/32
Abstract:
Configurations of molten fuel salt reactors are described that include an auxiliary cooling system which shared part of the primary coolant loop but allows for passive cooling of decay heat from the reactor. Furthermore, different pump configurations for circulating molten fuel through the reactor core and one or more in vessel heat exchangers are described.

Molten Fuel Nuclear Reactor With Neutron Reflecting Coolant

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US Patent:
20170301421, Oct 19, 2017
Filed:
May 2, 2017
Appl. No.:
15/584684
Inventors:
- Bellevue WA, US
Ken Czerwinski - Seattle WA, US
Bassem S. El-Dasher - Sammamish WA, US
Dan Flowers - Bellevue WA, US
Charles Gregory Freeman - Kirkland WA, US
Mark A. Havstad - Esparto CA, US
Christopher J. Johns - Tacoma WA, US
Brian C. Kelleher - Seattle WA, US
William M. Kerlin - Bellevue WA, US
Kevin Kramer - Redmond WA, US
Jeffery F. Latkowski - Mercer Island WA, US
Jon D. McWhirter - Kirkland WA, US
Robert C. Petroski - Seattle WA, US
Joshua C. Walter - Kirkland WA, US
Assignee:
TerraPower, LLC - Bellevue WA
International Classification:
G21C 15/28
G21C 3/54
G21C 1/32
G21C 1/32
G21C 15/25
G21C 15/02
Abstract:
Configurations of molten fuel salt reactors are described that utilize neutron-reflecting coolants or a combination of primary salt coolants and secondary neutron-reflecting coolants. Further configurations are described that circulate liquid neutron-reflecting material around an reactor core to control the neutronics of the reactor. Furthermore, configurations which use the circulating neutron-reflecting material to actively cool the containment vessel are also described.
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Mark A Havstad from Esparto, CA, age ~68 Get Report