Basic Regulatory Strategy

The basic regulatory strategy employed to safeguard public health relies on focussing attention on three main areas of activity product development product manufacture and market vigilance (see Figure 2.1). 

Step 9. The basic regulatory strategy has now been established (Fig. 10.2). We have some freedom to select several controller setpoints to optimize economics and plant performance. If reactor inlet temperature sets production rate, the setpoint of the total toluene flow controller can be selected to optimize reactor yield. However, there is an upper limit on this toluene flow to maintain at least a 5 1 hydrogen-to-aromatic ratio in the reactor feed since hydrogen recycle rate is maximized. The setpoint for the methane composition controller in the gas recycle loop must balance the trade-off between yield loss and reactor performance. Reflux flows to the stabilizer, product, and recycle columns must be determined on the basis of column energy requirements and potential yield losses of benzene (in the overhead of the stabilizer and recycle columns) and toluene (in the base of the recycle column). Since the separations are easy, in this system economics indicate that the reflux flows would probably be constant. 

Step 9. We have now established the basic regulatory plantwide control strategy (Fig. 11.3). Based upon the heuristic established by Fisher et al. (1988) that recycle gas flow s should be maximized to improve reactor yield, we open or remove the separator, vaporizer, and absorber overhead valves and run the compressor full out. To minimize the decanter temperature for improved organic recovery, the column condenser cooling water is set at maximum flow. Optimization of several controller... 

Therefore, irrespective of the desirability of the EU zero tolerance approach, its implementation has clearly been problematic. The proper implementation of the basic objectives of the EU regulatory strategy must be carefully considered, so that the important environmental objectives maybe attained. 

The continuous improvement of asset reliability, consistency, and capability, either mutually or simultaneously, is the basic objective of the engineering management strategy in order to reduce operation and maintenance costs and increase regulatory compliance. The foundation for continuous improvement is information, without which it is impossible to establish a rationale for change. This foundation must be established at the start of the project with the definition of the business need in measurable terms, i.e., performance criteria, without which there is no basis for design, testing, operation, maintenance, compliance, and consequently continuous improvement. 

The continuous improvement of asset reliability, consistency and capability, either mutually or simultaneously, is the basic objeaive of the Enterprise Asset Management (EAM) strategy in order to reduce operation and maintenance costs and inaease regulatory compliance. The foundation for... 

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