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in creator/contributor: "Herring, J. S."

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Safety Issues with Hydrogen as a Vehicle Fuel

This report is an initial effort to identify and evaluate safety issues associated with the use of hydrogen as a vehicle fuel in automobiles. Several forms of hydrogen have been considered: gas, liquid, slush, and hydrides. The safety issues have been discussed, beginning with properties of hydrogen and the phenomenology of hydrogen combustion. Safety-related operating experiences with hydrogen vehicles have been summarized to identify concerns that must be addressed in future design activities… more

Date: September 1, 1999

Creator: Cadwallader, L. C. & Herring, J. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Characterization of the Transient Response of the ILS with One Module Installed to Heatup Changes in Power Level and Cooldown

This report provides documentation of the initial startup and testing of the first electrolysis module in the Idaho National Laboratory (INL) High Temperature Steam Electrolysis Integrated Laboratory Scale (ILS) facility. Initial shakedown testing of the INL ILS experimental facility commenced on August 22, 2007. This fulfilled a DOE Level 2 milestone. Heatup of the first ILS module started at approximately 4:10 PM on September 24, 2007. Initial module testing continued for 420 hours. The test … more

Date: December 1, 2007

Creator: Condie, K. G.; Stoots, C. M.; O'Brien, J. E. & Herring, J. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Economic Analysis of a Nuclear Reactor Powered High-Temperature Electrolysis Hydrogen Production Plant

A reference design for a commercial-scale high-temperature electrolysis (HTE) plant for hydrogen production was developed to provide a basis for comparing the HTE concept with other hydrogen production concepts. The reference plant design is driven by a high-temperature helium-cooled nuclear reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540°C and 900°C,… more

Date: August 1, 2008

Creator: Harvego, E. A.; McKellar, M. G.; Sohal, M. S.; O'Brien, J. E. & Herring, J. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Economic Analysis of the Reference Design for a Nuclear-Driven High-Temperature-Electrolysis Hydrogen Production Plant

A reference design for a commercial-scale high-temperature electrolysis (HTE) plant for hydrogen production was developed to provide a basis for comparing the HTE concept with other hydrogen production concepts. The reference plant design is driven by a high-temperature helium-cooled reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540°C and 900°C, respect… more

Date: January 1, 2008

Creator: Harvego, E. A.; McKellar, M. G.; Sohal, M. S.; O'Brien, J. E. & Herring, J. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

CFD Model of a Planar Solid Oxide Electrolysis Cell: Base Case and Variations

A three-dimensional computational fluid dynamics (CFD) model has been created to model high-temperature steam electrolysis in a planar solid oxide electrolysis cell (SOEC). The model represents a single cell, as it would exist in an electrolysis stack. Details of the model geometry are specific to a stack that was fabricated by Ceramatec, Inc. and tested at the Idaho National Laboratory. Mass, momentum, energy, and species conservation and transport are provided via the core features of the com… more

Date: July 1, 2007

Creator: Hawkes, G. L.; O'Brien, J. E.; Stoots, C. M.; Herring, J. S. & Jones, R. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Conceptual design of a submerged power station

Providing safe and sustainable energy to the world`s increasing population will be one of the major challenges of the 21st century. At the INEL we are developing the concept of a passively safe submerged power station (SPS), shown. The reactor is located in the forward part of the vessel, while the turbine and generator are mounted in the middle section and the control and crew quarters are located at the opposite end of the vessel. The SPS would be operated in 20 to 100 m of water at a distanc… more

Date: August 1, 1992

Creator: Herring, J. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Conceptual design of a submerged power station

Providing safe and sustainable energy to the world's increasing population will be one of the major challenges of the 21st century. At the INEL we are developing the concept of a passively safe submerged power station (SPS), shown. The reactor is located in the forward part of the vessel, while the turbine and generator are mounted in the middle section and the control and crew quarters are located at the opposite end of the vessel. The SPS would be operated in 20 to 100 m of water at a distanc… more

Date: January 1, 1992

Creator: Herring, J. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Characteristics of a Mixed Thorium-Uranium Dioxide High-Burnup Fuel

Future nuclear fuels must satisfy three sets of requirements: longer times between refueling; concerns for weapons proliferation; and development of a spent fuel form more suitable for direct geologic disposal. This project has investigated a fuel consisting of mixed thorium and uranium dioxide to satisfy these requirements. Results using the SCALE 4.3 code system indicated that the mixed Th-U fuel could be burned to 72 MWD/kg or 100 MWD/kg using 25% of 35% UO2 respectively. The uranium remaine… more

Date: June 1, 1999

Creator: Herring, J. S. & MacDonald, P. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Magnetic shielding for interplanetary spacecraft

The protection of spacecraft crews from the radiation produced by high energy electrons, protons and heavier ions in the space environment is a major health concern on long duration missions. Conventional approaches to radiation shielding in space have relied on thicker spacecraft walls to stop the high energy charged particles and to absorb the resulting gamma and bremsstrahlung photons. The shielding concept described here uses superconducting magnets to deflect charged particles before they … more

Date: January 1, 1991

Creator: Herring, J. S. & Merrill, B. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Magnetic shielding for interplanetary spacecraft

Date: December 1, 1991

Creator: Herring, J. S. & Merrill, B. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Trends in fusion reactor safety research

Fusion has the potential to be an attractive energy source. From the safety and environmental perspective, fusion must avoid concerns about catastrophic accidents and unsolvable waste disposal. In addition, fusion must achieve an acceptable level of risk from operational accidents that result in public exposure and economic loss. Finally, fusion reactors must control routine radioactive effluent, particularly tritium. Major progress in achieving this potential rests on development of low-activa… more

Date: January 1, 1991

Creator: Herring, J. S.; Holland, D. F. & Piet, S. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Overview of High-Temperature Electrolysis for Hydrogen Production

Over the last five years there has been a growing interest in the use of hydrogen as an energy carrier, particularly to augment transportation fuels and thus reduce our dependence on imported petroleum. Hydrogen is now produced primarily via steam reforming of methane. However, in the long term, methane reforming is not a viable process for the large-scale hydrogen production since such fossil fuel conversion processes consume non-renewable resources and emit greenhouse gases. Nuclear energy ca… more

Date: June 1, 2007

Creator: Herring, J. S.; O'Brien, J. E.; Stoots, C. M.; Hartvigsen, J. J.; Petri, M. C.; Carter, J. D. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Submerged passively-safe power plant

The invention as presented consists of a submerged passively-safe power station including a pressurized water reactor capable of generating at least 600 MW of electricity, encased in a double hull vessel, and provides fresh water by using the spent thermal energy in a multistage flash desalination process.

Date: December 31, 1991

Creator: Herring, J.S.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

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Safety in the ARIES-III D- sup 3 He tokamak reactor design

The ARIES-3 reactor study is an extensive examination of the viability of a D-{sup 3}He-fueled commercial tokamak power reactor. Because neutrons are produced only through side reactions, the reactor has the significant advantages of reduced activation of the first wall and shield, low afterheat and Class A or C low level waste disposal. Since no tritium is required for operation, no lithium-containing breeding blanket is necessary. A ferritic steel shield behind the first wall protects the mag… more

Date: January 1, 1991

Creator: Herring, J.S. & Dolan, T.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Fusion Safety Program annual report, fiscal year 1992

This report summarizes the major activities of the Fusion Safety Program in fiscal year 1992. The Idaho National Engineering Laboratory (INEL) is the designated lead laboratory and EG G Idaho, Inc. is the prime contractor for this program. The Fusion Safety Program was initiated in 1979. Activities are conducted at the INEL and in participating organizations including the Westinghouse Hanford Company at the Hanford Engineering Development Laboratory, the Massachusetts Institute of Technology, a… more

Date: January 1, 1993

Creator: Holland, D. F.; Cadwallader, L. C.; Herring, J. S.; Longhurst, G. R.; McCarthy, K. A.; Merrill, B. J. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fusion Safety Program annual report, fiscal year 1992

This report summarizes the major activities of the Fusion Safety Program in fiscal year 1992. The Idaho National Engineering Laboratory (INEL) is the designated lead laboratory and EG&G Idaho, Inc. is the prime contractor for this program. The Fusion Safety Program was initiated in 1979. Activities are conducted at the INEL and in participating organizations including the Westinghouse Hanford Company at the Hanford Engineering Development Laboratory, the Massachusetts Institute of Technology, a… more

Date: January 1, 1993

Creator: Holland, D. F.; Cadwallader, L. C.; Herring, J. S.; Longhurst, G. R.; McCarthy, K. A.; Merrill, B. J. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fusion Safety Program annual report, Fiscal Year 1993

This report summarizes the major activities of the Fusion Safety Program in Fiscal Year 1993. The Idaho National Engineering Laboratory (INEL) has been designated by DOE as the lead laboratory for fusion safety, and EG&G Idaho, Inc., is the prime contractor for INEL operations. The Fusion Safety Program was initiated in 1979. Activities are conducted at the INEL and in participating organizations, including universities and private companies. Technical areas covered in the report include tritiu… more

Date: December 1, 1993

Creator: Longhurst, G. R.; Cadwallader, L. C.; Dolan, T. J.; Herring, J. S.; McCarthy, K. A.; Merrill, B. J. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fusion Safety Program annual report, fiscal year 1994

This report summarizes the major activities of the Fusion Safety Program in fiscal year 1994. The Idaho National Engineering Laboratory (INEL) is the designated lead laboratory and Lockheed Idaho Technologies Company is the prime contractor for this program. The Fusion Safety Program was initiated in 1979. Activities are conducted at the INEL, at other DOE laboratories, and at other institutions, including the University of Wisconsin. The technical areas covered in this report include tritium s… more

Date: March 1, 1995

Creator: Longhurst, G. R.; Cadwallader, L. C.; Dolan, T. J.; Herring, J. S.; McCarthy, K. A.; Merrill, B. J. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Technical basis for the proposed high efficiency nuclear fuel program

Greenhouse gas emissions from fossil fired electricity generating stations will dramatically increase over the next 20 years. Nuclear energy is the only fully developed technology able to supply large amounts of electricity without generation of greenhouse gases. However, the problem of noncompetitive economics and public concerns about radioactive waste disposal, safety, and nuclear weapons proliferation may prevent the reemergence of nuclear power as a preferred option for new electric energy… more

Date: July 1, 1998

Creator: MacDonald, P. E.; Herring, J. S.; Crawford, D. C. & Neimark, L. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Commercial-Scale Performance Predictions for High-Temperature Electrolysis Plants Coupled to Three Advanced Reactor Types

This report presents results of system analyses that have been developed to assess the hydrogen production performance of commercial-scale high-temperature electrolysis (HTE) plants driven by three different advanced reactor – power-cycle combinations: a high-temperature helium cooled reactor coupled to a direct Brayton power cycle, a supercritical CO2-cooled reactor coupled to a direct recompression cycle, and a sodium-cooled fast reactor coupled to a Rankine cycle. The system analyses were pe… more

Date: September 1, 2007

Creator: McKellar, M. G.; O'Brien, J. E. & Herring, J. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Optimized Flow Sheet for a Reference Commercial-Scale Nuclear-Driven High-Temperature Electrolysis Hydrogen Production Plant

This report presents results from the development and optimization of a reference commercialscale high-temperature electrolysis (HTE) plant for hydrogen production. The reference plant design is driven by a high-temperature helium-cooled reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540° C and 900°C, respectively. The electrolysis unit used to produce h… more

Date: November 1, 2007

Creator: McKellar, M. G.; O'Brien, J. E.; Harvego, E. A. & Herring, J. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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A middle path for electricity options and sustainable development

In a landmark article in Foreign Affairs in October 1976, Amory Lovins presented his vision of two vastly different and seemingly irreconcilable paths that energy provision might take into the future. One path was a ``hard`` path, characterized by extensive development of large, capital-intensive centralized electrical generating facilities and their peripherals, designed with little consideration given to the matching of these facilities to the requirements of the end-use needs. The second, ``… more

Date: December 31, 1994

Creator: Mills, J. I. & Herring, J. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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PROGRESS IN HIGH-TEMPERATURE ELECTROLYSIS FOR HYDROGEN PRODUCTION USING PLANAR SOFC TECHNOLOGY

A research program is under way at the Idaho National Laboratory to assess the performance of solid-oxide cells operating in the steam electrolysis mode for hydrogen production over a temperature range of 800 to 900ºC. The research program includes both experimental and modeling activities. Selected results from both activities are presented in this paper. Experimental results were obtained from a ten-cell planar electrolysis stack, fabricated by Ceramatec , Inc. The electrolysis cells are elec… more

Date: April 1, 2005

Creator: O'Brien, J. E.; Herring, J. S.; Stoots, C. M.; Hawkes, G. L.; Hartvigsen, J., J. & Shahnam, Mehrdad

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Parametric Study Of Large-Scale Production Of Syngas Via High Temperature Co-Electrolysis

A process model has been developed to evaluate the potential performance of a largescale high-temperature co-electrolysis plant for the production of syngas from steam and carbon dioxide. The co-electrolysis process allows for direct electrochemical reduction of the steam – carbon dioxide gas mixture, yielding hydrogen and carbon monoxide, or syngas. The process model has been developed using the Honeywell UniSim systems analysis code. Using this code, a detailed process flow sheet has been def… more

Date: November 1, 2007

Creator: O'Brien, J. E.; McKellar, M. G.; Stoots, C. M.; Herring, J. S. & Hawkes, G. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department