Process Engineering White Papers

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  • How to control a process with long dead time

    A process with a large dead time presents a special challenge for a controller --  any controller. This short paper explains how to get the best control of large dead time processes.

  • Theory and practice of pH measurement

    This 43-page guide covers the basic mechanism of pH measurement, the structure of the sensor and its fundamental limitations, and also provides installation, maintenance and troubleshooting guidance.

    Rosemount Analytical
  • Level measurement of bulk solids and powders

    This 26-page white paper from Monitor Technologies discusses the difficulties in measuring bulk solids and powders in bins, silos and hoppers.  Download this document to learn which technologies are out there that can make this job easier.

    Monitor Technologies
  • Tracing the accuracy of calibration gases

    Calibrating your instruments using specialty gas will only yield results as accurate as your gas mixture. This three-page white paper discusses analytic traceability and how it relates to gas mixture accuracy.

  • Understand the hazards of flammable liquid spills

    This short paper discusses the risks of flash fires and pool fires from spills of flammable liquids, preventative measures, as well as how to avoid hazards during the clean up of such spills.

    Chilworth Technology
  • Continuous PHA Revalidation

    A process hazard analysis must be revalidated every five years. This paper discusses the merits of a new approach aimed at increasing the effectiveness of PHAs, called Continuous PHA revalidation.

  • Facility Major Risk Survey

    This 8-page primer describes a method for identification of major acute risks in existing process facilities that can potentially affect on-site and off-site populations and for prioritization of mitigation methods.

  • Relief Design for Reactive Systems – Get the Facts

    This 15-page paper focuses on the additional degrees of complexity that reactive systems pose for emergency relief systems. It covers topics such as how to screen for reactivity and what practices, standards and regulations should be followed, as well as a host of other issues.

  • Ziegler-Nichols Tuning Rules And Limitations

    The standard reference for PID tuning seems to be the Ziegler-Nichols tuning rules developed in 1942 on a pneumatic controller. Here is how to tune a controller using these rules.

  • Why Process Safety Management Audits Fail

    Most companies have completed at least three process safety management(PSM) compliance audits of their covered facilities since the promulgation of the OSHA PSM standard. These companies, however, are not seeing noticeable improvements in their PSM programs. In fact, many companies feel that their PSM programs have become less effective. What has happened and why? Are there any lessons learned from the Enron collapse and its auditing program? What needs to be done?

  • Risk-Based Process Safety Design

    Safe design has long been a priority in the process industries. A safe design basis, together with a formal safety management system and safety practices, procedures, and training, is critical for providing that level of confidence required for risk management. The goal of process safety management is to consistently reduce risk to a level that can be tolerated by all concerned. A systematic, risk-based approach to safety design can help eliminate hazards that pose intolerable risk from the process and mitigate the potential consequences of hazards.

  • Understanding Regulated Health and Safety Standards--Part 1

    This paper provides the viewpoint of the American Conference of Governmental Industrial Hygienists (ACGIH), a private not-for-profit, non-governmental corporation open to all industrial hygienists or other occupational health and safety professionals. The authors have the opinion that there are misunderstandings about the use of regulated health and safety standards. In part one of this article, they provide some information on how regulations are formed and advice on using these values to conduct business. Employers and employees need this fundamental understanding to make informed health and safety decisions. This information is also useful for guiding public decisions about everyday toxic exposures.

  • Push Maintenance: The New Frontier in Asset Management

    The convergence of innovative technologies using open industry standards simplifies communication between software and technology. Now you can centralize key performance diagnostics, push critical information to the workforce, and problems can be solved from anywhere.

  • Achieve 21 CFR Part 11 Compliance

    This technical white paper discusses Yokogawa’s CENTUM CS 3000 R3 DCS (Distributed Control System) product and the extent of its compliance with Part 11 of Title 21 of the Code of Federal Regulations (21 CFR Part 11), the Electronic Records/Electronic Signatures Rule.

  • Process Safety Management

    This guide from the U. S. Occupational Safety and Health Administration covers pre-startup safety review, mechanical integrity, how-work permits, management of change, incident investigation, emergency planning and response and compliance audits, among other topics.

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