Flow charts procedure control

A brief checklist should be drawn up based on an explicit platform-specific procedure for the control room in the event of an emergency. The checklist should emphasize any checks that must be made before blowdown is initiated, and what should be observed during blowdown. This should be in the form of a flow chart. 

The guideline also suggests a procedure (not applicable in all cases) for the presentation of the sample using protected samples as dark controls. A detailed decision flow chart for the selection of the testing stages to be performed is also included. 

Similar logical tests can be applied to increases in surface contamination levels, which may be due to increases in source intensity, or decreases in the efficiency of barrier controls or cleaning and sanitizing procedures. Flow charts illustrating the logical evaluation of data, and investigation of out-of-limit results are useful as starting points in the development of corrective action plans. ... 

Located on an isolated island, JACADS had only EPA Region IX to report to at the local level. Contingency procedures for dealing with agent outside engineering controls were approved in the early days of the project and included a flow chart and call-down lists. The contingency plans involved notification of on-site U.S. Army Chemical Activity... 

Figure 7-1. Simplified procedure control flow chart...

Obtain process flow diagrams, operating procedures, control charts, etc. 

A flow chart for the procedures is shown in Figure 6. The main control program for the automated assay was programmed with Visual Basic . The e-sco unit was remotely controlled through its proprietary ActiveX interface. An EXCEL template file contained all relevant information about the sample and the desired automatic processing (number of samples, spectrum file names, peak position and line width). At the end of the assay, the measurement results and signal intensity plots are generated automatically. 

This verification is referred to as an operability study [4-20), [4-21], technical safety discussion [4-22J, or PI flow chart review [4-23] and is implemented according to different principles. H. Lawley [4-20] has established a strict system for the procedure. For the detection of the safety-relevant components, he follows the PI flow chart, and for the detection of hazardous plant conditions, a list of code words. H. Ullrich [4-24] describes a different way of proceeding. He applies a series of checklists in a determined sequence to the planning documents to confirm complete technical safety provisions. Individually such checklists are used to examine the completeness of procedure planning and construction documents as well as measuring and control plans. 

The procedural guidance to the operators also involves deciding on the format of the new EOPs. The format has been shown to affect the reliability of the control room team in upset situations. This has been the subject of many studies in the past. Different EOP formats are commonly used in the world one column (mostly used for abnormal procedures), two column (flow chart, etc.), and the selection between them should be based on factors like ... 

Figure 2. Flow chart of the procedures to test the ventricular model (in terms of end-systolic pressure-volume relationship) and the arterial model by end-systolic pressure-stroke volume relationship using one control set of loads (4 preloads and 1 afterload) and 8 noncontrol load sets (4 preloads and 8 afterloads).

Procedures are agreed safe ways of doing things. Written procedures usually consist of step-by-step instructions, and related information, to help carry out tasks safely. They may include checklists, decision aids, diagrams, flow-charts and other types of job aids. They are not always paper documents, and may appear as on screen help in control system displays. 

Here we begin to use quantitative procedures. We find, for example, simple algebraic formulas for selecting level and pressure controller settings. We also have tuning charts for flow and flow-ratio controllers. 

S ystem identification is the term used to define a procedure to characterize the process response. In this case, system identification can be accomplished by setting the default level controller set point at 50 per cent (under Liquid Valve ), adjusting the steam flow to the heater in steps, up and down, and then observing the temperature response on a strip chart. This is termed step response testing and is the same as was done in the previous workshop. 

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