Refrigeration / Cooling Systems Engineering Expert Witnesses: 4

David G. Shreve, PE,  is a licensed Professional Engineer in 18 states. He holds a certification from the National Council of Examiners for Engineering and Surveying (NCEES), is a LEED® accredited professional for Building and Construction and holds a Certified in Plumbing Design (CPD) credential. 

Mr. Shreve has over 30 years of experience in design, construction administration and forensic analysis of Mechanical, Plumbing, Fire Protection, and Energy Management Systems for commercial, institutional and residential projects. He is also a member of American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), American Society of Plumbing Engineers (ASPE) and International Code Council (ICC).

Mr. Shreve joined Ivey Engineering in 2014. His primary responsibilities include forensic analysis of HVAC, plumbing, fire protection and energy management systems. He also performs site inspections, testing, research, product analysis and cost estimating, and is responsible for writing reports and testifying in depositions, hearings and trials.

EXPERIENCE (partial listing)
∗ Approximately 300 HVAC, fire protection and plumbing design projects
∗ Approximately 10 LEED® design projects
∗ Approximately 20 feasibility studies
∗ Approximately 25 expert witness engagements

John Hatcher is an industry leader in Building Systems Engineering including, Security, Building Automation Systems, Fire Alarm Systems, Intelligent Building Concepts and Commissioining. He has worked on some of the most prestigious facilities in the world including the Americas, Europe, Middle East, Russia, India and Southeast Asia. 

Security Expertise:

• Access Control
• CCTV Surveillance
• Emergency Communications
• Operations
• Risk Assessments

Building Automation Expertise:

• Energy Management
• HVAC Controls
• Operations
• MEP Commissioning

Other Systems Expertise:

• Fire Alarm
• Telecommunication
• Intelligent Buildings

Roger W. Griffith, P.E. has over 37 years of experience as a registered professional Mechanical Engineer in the design, maintenance, and operation of mechanical systems (Plumbing, HVAC, and Fire Sprinkler Systems). As the principal of Griffith Engineering & Consulting for 23 years, his design experience with commercial and industrial projects includes convention centers, schools, office buildings, condominiums, apartment buildings, hotels, churches, manufacturing facilities, medical buildings, restaurants, historic buildings, dormitories, fire halls, and maintenance facilities.

Litigation Support - Since 2002, Mr. Griffith has been providing forensic engineering, consulting, and expert witness services that are thorough, credible, and timely. He also assists clients through the mediation and arbitration process. His expert testimony is based upon independent and impartial investigation, research, analysis, and testing. His services include written reports and the preparation of exhibits. Mr. Griffith's expertise is available to plaintiffs and defendants on the issues of plumbing, mechanical, and fire sprinkler system defects and failures. 

His specific areas of expertise include hot water scalding, carbon monoxide poisoning, and legionella. Mr. Griffith has served on numerous codes and standards committees related to areas, including the NFPA 54 Fuel Gas Code, the ASSE Scalding Awareness Task Group, the Uniform Codes' Legionella Task Groups, and the ICC Plumbing/Mechanical/Fuel Gas Code Action Committee. 

He is a Registered Professional Engineer in Alabama, Arizona, Arkansas, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Minnesota, Mississippi, Missouri, New York, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Utah, and Virginia.

Areas of Expertise:

View Roger W. Griffith's Consulting Profile.

James Caylor, PE, is an independent consulting Mechanical Engineer specializing in NH₃ and CO₂ Refrigeration Systems used in process and cold storage applications. Clients have included Leprino  Foods, Safeway, Dreyer’s, Tyson, ConAgra, Unilever, Nestlé, Imperial Irrigation District, Lineage Logistics, and Grupo Kuo (Kekén).

Background Information - Mr. Caylor's first 15 years in the refrigeration business were spent as a service and startup technician, including a UA steamfitter apprenticeship, 11 years in the industrial field and the final 8 years self-employed as Caylor Refrigeration. He then returned to college and graduated from Arizona State University in 2000 with a BSME. 

Mr. Caylor worked as a project engineer for two design/build contractors and became a PE before moving to Tyson Foods’ corporate design group in 2005. He joined Jacobs Engineering’s Food and Beverage Group in Fort Worth in 2007, finished in 2013 as Deputy Director in charge of all refrigeration projects and opened his own consulting firm in 2014.

Litigation Support - Mr. Caylor has been retained in seven expert witness cases, including one completed and two more scheduled  depositions. Two of these are currently preparing for trial and one for arbitration. Disputes tend to fall into one of three categories:  

Component Function - System Design / Installation/ Operation - Regulatory Compliance

Mr. Caylor has also consulted for lawyers representing a food processing firm facing EPA citations at multiple plants. His forensic analysis services are available to attorneys representing plaintiff and defendant and include site review, thorough reporting, depositions, and trial testimony as needed.

Areas of Expertise:

View James Caylor's Consulting Profile.