Temperature distribution in inner shell of double walled chamber subjected to radiation heat transfer

Craig Boyak, PE

Engineering Services providing
Insight & Analysis for your Understanding & Gain

ANSYS, Pressure Vessels, Furnaces
Stress & Thermal Analysis

Home - The Next Step

Engineering                            Pressure Vessels
     ASME Sect VIII, Divs 1 & 2 expertise
     Vessel component design
     Nozzle loads
     Vessel rating services
     HX tube sheets
   Structures & Mechanics
     Steel; AISC & AISI
     Aluminum
     Welding; AWS, ASME
   Analysis
     Types
        Stress & displacement
        Fatigue
        Seismic
        Heat transfer
        High temperature behavior
        Risk Assessment
     Methods
        Spreadsheet Solutions
        Finite Element Analysis
        3D Modeling & Visualization
 Materials
     for refinery use
     for high temperatures
Computing
    Event simulation
    VBA programming/
    MS Office automation

Resume of Craig Boyak

Experience

1997 to present, self employed - 1994 to 1997, Mikesell & Boyak Associates

ASME Boiler & Pressure Vessel Code, Sect VIII, Divs. 1 & 2  - Conducted design reviews, failure analyses and re-rates, prepared design reports for a wide variety of refinery, chemical processing and thermal processing equipment. Provided summarization and background to CA state engineering management.

Thermal analysis - Conducted steady-state and transient heat transfer analyses of metallurgical processes chambers utilizing induction and plasma arc heating devices, thermometry instrumentation, and pumps.  

Mechanical analysis - Developed design bases and capacity evaluations for hydrocarbon processing internal structures.

Training - Taught class on high temperature design criteria and methods to Northern Alberta chapter of ASME for continuing education of engineers.  Taught 2 day class in ASME Section VIII, Div 2 to Northern Alberta chapter of ASME.  Provided in-house training of engineers for FEA utilization.

Design automation - Wrote VBA program implementing design and analysis of reactor internals.  VBA programming areas include user interface form design, Excel and Word connectivity and file management.

Business development - Conducted pre-bid engineering for a Russian company’s fabrication of a high pressure mixing vessel with interior water jacket and breech-lock closure. 

1985 to 1994, Robert L. Cloud & Associates, Inc., Berkeley, CA - Engineer. 

Pressure Vessels

Conducted a fitness for service review of 9 paper batch digesters.  Reviewed UT results and overlay repair reports to define corrosion rates for future life prediction.  OSHA 1910 regulation compliance.

Wrote the stress report and fatigue life prediction for large vessel consisting of equal sized intersecting cylinders subjected to internal pressure and seismic loads.

Reviewed the design of a prototype radial flow ammonia reactor to ascertain fatigue life.

Reviewed the design of a conical Y-juncture for outlet of pumphouse on California aqueduct to ascertain the effect of an out-of-round fabrication condition.

Conducted an analysis of a coker reactor stiffener failure.  Effort included a transient, thermal stress analysis (by FEA) to determine the range of stress for fatigue life evaluation.

Rerated a fluidized catalyst cracking unit (FCC) unit to new design conditions for restamping of vessel.

Conducted a failure / fatigue analysis of a cone-cylinder juncture of coker reactor. Involved developing a FEA model with variable weld profiles to develop ranges of peak stresses for fatigue life predictions.

Conducted fitness for service determination of heat exchanger nozzle.

General structural mechanics

Reviewed FEA analyses conducted in support of design methodology reviews.  RLCA was active in reviews of nuclear facility design criteria.  Documents utilizing FEA techniques came to me.

Reviewed design criteria of early nuclear weapons facility.  Work involved documenting evolution of seismic design criteria and reviewing existing reports for compliance with past and today’s standards.

Developed design criteria for rigid clamp systems for piping.  Conducted FEA analyses to identify significant parameters affecting stresses and stability.

Conducted FEA analyses of thermal and pressure loads on U-bolt type pipe clamp systems.

Training

Wrote coursework for class in ASME Section VIII, Div. 2 (90+ pages).  Coursework summarized requirements for design specifications, the design basis and criteria, design based on stress analysis, fatigue analysis, shells, flanges, openings, nozzles, materials, welding, testing and records.

Taught a class in Sect VIII, Divs. 1 and 2 to Newport News Shipbuilding with specific focus on the criteria and finite element analysis for a high pressure flange including gasket design.

Taught a class in design and analysis of ASME Section III, Class 1 vessels to the Brazilian Navy in Sao Paulo, Brazil.  Focused on 3D stress state and interpretation for use in ASME Code rules and ANSYS solid modeling techniques.

Taught a class in ASME Section VIII, Div. 2 in St. Petersburg and Volgograd, Russia

Taught a class in ASME Section VIII, Div. 1 in St. Petersburg, Russia

Taught classes in software usage for business and engineering applications in Volgograd, Russia.  Classes included Windows, Word, Excel, Vessel Design program and interface to AutoCad, project management and electronic communications.

Computing

Identified needs for company’s PC/minicomputer network equipment.  Also wrote purchase specification, solicited bids, chose the contractor, and worked with the contractor through installation and training of our engineers.

Took over responsibility for PC systems support.  Included providing recommendations, purchases, configuring and training of hardware and software.

Business development

Assisted a Russian pressure vessel fabricators in St. Petersburg and Volgograd, Russia in preparing for Accreditation by the ASME for U and U-2 stamps

Set up office in St. Petersburg, Russia for supporting ASME accreditation activities ('94)

Conducted pre-bid engineering for dozens of vessels and heat exchangers for a Russian fabricator.  Handled bid communications between parties.

Managed a group of 7 engineers working on site at a nuclear power industry construction project.

1984 to 1985, Bechtel Advanced Technology Division, San Francisco, CA; Engineer.  Worked on predicting creep response of underground openings.

July 1982 to May 1984, see Education, MS at Oregon State University

September 1979 to July 1982, Bechtel Power Corporation, Ann Arbor, MI, Engineer.  Worked as design and construction engineer on various coal and nuclear power projects.

Education

Oregon State University, MSCE, 1984

Major : Structures; Thesis - Buckling and stability topics

Minor : Construction Management, Computer techniques

Swiss Federal Institute of Technology, Zürich, 1978-9

Areas of Study : Ultrasonics, rock mechanics, mathematics of system analysis and graphics

Wayne State University, BSCE, 1978

Areas of Study : soil mechanics, material mechanics, numerical techniques

Professional Registration  Registered Professional Civil Engineer in the following states:

California  (#C-40542) since 1987

Washington (#232-01 0028440)  since 1992

Accomplishments / Activities

NCAA All American, Track & Field, pole vault, 1974

TAC Masters All American, pole vault, 1987, 1992, 1994

Recipient NCAA post graduate scholarship for academics / athletics, 1977

Mountain sports; skiing, hiking and mountaineering

Continuing Education / Vocational Experience

Welding, Ypsilanti Valley Community College, 1981

Automotive Mechanic - Licensed in Michigan from 1977 to 1994

Mechanist - Mill, lathe, drill press, grinder operations, late 70s

ASME Professional Development Course - Section VIII, Div. 1 Design, 1989

ASME Professional Development Course - Chemical Petroleum Process Engineering for Mechanical Engineers, 1995

System Administration Course for VMS Operating Systems, Digital, 1988

System Administration Courses for UNIX Operating Systems, Sun Microsystems, 1990

contact email address - CBoyakPE@sonic.net

"An engineer is someone that can do for a nickel what any damn fool can do for a dollar."