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DIERS Methodology

Design emergency pressure relief systems to mitigate the consequences of unwanted chemical reactivity and account for two-phase flow using the right tools and methods

Deflagrations (Dust/Vapor/Gas)

Properly size pressure relief vents to protect your processes from dust, vapor, and gas explosions

Effluent Handling

Pressure relief sizing is just the first step and it is critical to safety handle the effluent discharge from an overpressure event

Thermal Stability

Safe storage or processing requires an understanding of the possible hazards associated with sensitivity to variations in temperature


Classification of hazardous materials subject to shipping and storage regulations

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Develop critical safety data for inclusion in SDS documents


Model transport of airborne virus aerosols to guide safe operations and ventilation upgrades


Model transport of contamination for source term and leak path factor analysis

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Model transport of heat and smoke for fire analysis

Flammable or Toxic Gas

transport of flammable or toxic gas during a process upset

OSS consulting, adiabatic & reaction calorimetry and consulting

Onsite safety studies can help identify explosibility and chemical reaction hazards so that appropriate testing, simulations, or calculations are identified to support safe scale up

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Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid flow, electric power systems

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Testing to support safe design of batteries and electrical power backup facilities particularly to satisfy UL9540a ed.4

Hydrogen Safety

Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen

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Safety analysis for packaging, transport, and storage of spent nuclear fuel

Decommissioning, Decontamination and Remediation (DD&R)

Safety analysis to underpin decommissioning process at facilities which have produced or used radioactive nuclear materials

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Bespoke testing and modeling services to validate analysis of DD&R processes

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Expert analysis of possible risk and consequences from nuclear plant accidents

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Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

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Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

Laboratory Testing & Software Capabilities

Testing and modeling services to support resolution of emergent safety issues at a power plant

Adiabatic Safety Calorimeters (ARSST and VSP2)

Low thermal inertial adiabatic calorimeters specially designed to provide directly scalable data that are critical to safe process design

Other Lab Equipment and Parts for the DSC/ARC/ARSST/VSP2 Calorimeters

Products and equipment for the process safety or process development laboratory


Software for emergency relief system design to ensure safe processing of reactive chemicals, including consideration of two-phase flow and runaway chemical reactions


Facility modeling software mechanistically tracks transport of heat, gasses, vapors, and aerosols for safety analysis of multi-room facilities


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With over 40 years of industry expertise, we have a wealth of process safety knowledge to share.

Published September 11, 2013

[Part 2] 3 Ways To Protect Your Electrical Cable Assets

This article is Part II of https://www.fauske.com/blog/3-ways-to-protect-your-electrical-cable-assets-part-1

Cable assets can be diagnosed in many ways ranging from simple electrical tests such as continuity checking, to sophisticated laboratory techniques such as nuclear magnetic resonance (NMR) evaluations.  The most appropriate diagnostic technique depends upon the reason for doing diagnostics; there are many reasons for performing cable diagnostics.  For this discussion, the reason for performing cable diagnostics is for cable aging management and to assess when to repair and/or replace aging cable.

The following table summarizes the major types of cable diagnostic techniques:


Although there are many cable diagnostic techniques, as seen from the table, the one cable testing technique that stands out from all the rest is the Line Resonance Analysis (LIRA).  LIRA is the unsurpassed technique for cable diagnostics because LIRA does not overstress the cable while testing because it only uses a 5 VDC frequency modulated signal.  Unlike most other cable testing techniques, to perform a test, LIRA does not require the cables to be disconnected; only the breaker needs to be open.   LIRA provides the ability to evaluate cables locally (to identify degraded cable areas) along with performing a full length (overall) assessment of the cable.  Fauske & Associates, LLC is the North American LIRA representative for the nuclear power and facility industries.   We sell the LIRA test equipment, provide LIRA training, calibrate the LIRA device and can provide on-site testing services.

LIRA, in field and test results

LIRA is an easy to use cable testing technique, developed in Europe.  The process for running a LIRA test involves grounding the cable to assure the cable is not energized, then connecting the LIRA probes to 2 metal cores and starting the LIRA data collection software.  The entire process is completed in minutes.  Once the data is captured, it can be analyzed.  The analysis software included with LIRA provides locations along the cable that have potential issues (degraded cable, bad splices, etc.) along with a global evaluation of the cable performance.  All of the collected data is stored in a data base for future monitoring and evaluation.

Read part 3 here: https://www.fauske.com/blog/3-ways-to-protect-your-electrical-cable-assets-part-3

Next time, in Part III, we’ll discuss monitoring your cable assets.  For more information regarding cable aging, health and testing, please email us at info@fauske.com

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