from Modeling And Control by Terry Blevins Single-loop and multi-loop control may be used to address a wide variety of control requirements. However, if a process is characterized by extremely long process delays or by a high degree of process interaction, then other control techniques may be required. The control of quality parameters such as […]
DCS
QUALIFICATIONS SUMMARY § 18 Years Project & Operations Experience § Extensive Dept. Scheduling Experience for Scope, Tasks, Resources, & Repairs § 8.5 Years Site Service Experience, Repairs, Installation, Maintenance, Calibration, Upgrades in NE for Large Customer Base § Managed all Dept. Equipment Repairs, Replacements, Track Customer Sites § Developed Dept. & Project Budgets, Monitor […]
I am currently doing a search for individuals with strong Process Safety Analysis (PHA) or Layers of Protection Analysis (LOPA) experience in either the petrochemical, refining, paper or power industries. There are a series of opening available, in locations around the country. Travel may be considerable, but it may be possible to office from home […]
IT compliance today requires a paradigm shift from a project-specific engagement to a comprehensive, centralized compliance program. In the past, Computer System Validation (CSV) in the life sciences was focused on software validation and infrastructure and computing platform qualification for systems that supported FDA-regulated activities and records. Today, organizations are increasingly focusing on overall, […]
TDC 3000. I am looking for someone with experience with both hardware and software aspects of the system, and can do application work on APM, HPM and perhaps some CL. This is a midwest client who has an immediate need for a qualified individual for at least six months. Experion. Houston need for someone with […]
from Control And Modeling In many applications, the process equipment is characterized as having multiple manipulated inputs. This type of equipment configuration is often referred to as a multiple input/multiple output process. The process control consists of multiple PID blocks where a process output and process input pair are associated with each PID. The […]
Distributed control system with benefits In this installment of What Works, a DCS upgrade enhances data acquisition and improves machine performance. When is a new equipment installation more than just implementing new devices? When it delivers benefits beyond and outside the areas you originally planned. When is a technical partnership more than just working […]
Sigurd Skogestad A chemical plant may have thousands of measurements and control loops. By the term plantwide control it is not meant the tuning and behavior of each of these loops, but rather the control philosophy of the overall plant with emphasis on the structural decisions. In practice, the control system is usually divided into […]
To achieve best overall plant operation, it is often necessary to coordinate the operation of equipment in multiple process areas. In Chapter 16 of Control Loop Foundation – Batch and Continuous Processes, some examples are given where multi-loop techniques may be effectively used for such coordination. One of the examples from this chapter is power […]
21 CFR Part 11 might really be called the Data Integrity Act. Here is a high-level look at what is needed to ensure compliance. By John Avellanet, Cerulean Associates, LLC Data integrity is critical to regulatory compliance, and the fundamental reason for 21 CFR Part 11. This article outlines and summarizes strategies and requirements. […]