D.B. Chisholm Associates, Inc.

Our Company

Areas of Practice

Case History

Contact Us

 
 
AREAS OF PRACTICE
Some of the issues in which we have been involved include:


Pipeline and Pressure Vessels


  • Product and hazardous liquid pipeline spills, leaks and ruptures
  • Gas distribution and transmission lines
  • Natural gas explosions
  • Pressure vessel leaks and ruptures
  • Propane tanks, lines and house piping, and distribution systems
  • Codes Compliance - Code of Federal Regulations - 49 CFR 191, 192, 193, 195 and applicable industry codes and guidelines including but not limited to ASME B31.1, B31.3, B31.4, B31.8, B31.8S, NFPA 30, 54, 58, 921, ASTM, AGA, GRI, PPI, API, NPGA, ANSI Z380.1, BOCA, CABO, IMC, etc.
  • Metallurgical failure analysis, including chemical analysis, optical and scanning electron microscopy, mechanical testing of components and materials testing and evaluation
  • Analysis of gas leaks in confined spaces and underground migration
  • Historical analysis of codes/regulations
  • Analysis of weld failures
  • Analysis of fastener failures including bolted assemblies
  • Fatigue and fracture analysis of components/structures
  • Analysis of third-party damage
  • Excavation damages and liability assessment
  • Evaluation of ultrasonic and magnetic flux leakage pipeline pigging data
  • Corrosion assessment

 



On-Road and Off-road Vehicle Component
Failure Analysis


  • Axle failures
  • Spot weld failures
  • Analysis of open vs. closed sheet metal structures such as pillars, B pillars, & roof rails
  • Fuel tank ruptures (automobiles/trucks)
  • Suspension component failures such as ball joints and leaf springs
  • Truck mounted crane turntable bolt failures

 



Aircraft Components


  • Analysis of turbocharger shaft failure
  • Analysis of turbine component failures such as gears, splines and shafts
  • Structural behavior of airframe components at elevated temperatures


Highway Safety Components/Structures


  • Breakaway signs and luminaires
  • Metallurgical analysis of guardrail fractures
  • Fatigue of bridge structures/components

 

Thank you for stopping by our web site.  Please e-mail or phone our office for further information and a FREE consultation.  We look forward to working with you in the future.


38074 Stevens Rd. «» Lovettsville, VA  20180
Phone: 540.822.4370 «» Fax: 540.822.4371
info@dbchisholm.org