Feedback performance chart

Figure 4.7 Visual method of giving feedback in the workplace a daily safety performance chart...

The program must require the vendors to measure a number of reference samples and/or duplicates submitted in a planned sequence. It should require prompt measurement and reporting of these data and should maintain the results in a control chart format. Prompt feedback and follow-up of any apparent data discrepancies and reconciliation of the results with control charts maintained by the vendors are required to minimize the length of uncertain performance. The quality assurance plan should include random sampling of the vendors data for their validity and conformance with quality assurance requirements. If quality assurance is properly practiced at all levels, an inspection of 5 percent of the total data output should be adequate. 

A control plan is the sum of the procedures and equipment used to ensure that the internal requirements are met. It includes control charts, sampling plans, 100% inspection, feed-forward/feedback mechanisms, and mistake-proofing tech-niques/devices. Some items may be performed by equipment like automatic controllers, and some are performed by operators and checkers. There may not be a single document called a control plan. Instead, these controls might be spread across a number of documents including a statistical process control plan, an inspection plan, an operator manual, and various other standard operating procedure and specifications. 

Performance management requires that consequences are first analysed and then restructured to encourage the preferred (safe) behaviours. The chart demonstrating the improvement in the percentage of safe behaviours is a feedback tool demonstrating the gains made. 

De Thomas etal. [Ill] studied the production of polyurethanes and showed that NIRS can be used successfully to monitor the course of the reaction in real time. Spectral data were obtained with a dispersive instrument, using standard transflectance probes. An MLR model was derived for the quantitative determination of isocyanate concentrations during the urethane polymerization reaction. Model predictions were used to build statistical process control charts and to detect trends along the polymerization reaction. The authors suggested that the integration of NIRS with process control routines could lead to improvements of product quality and consistency, while minimizing reaction time. However, model predictions were not used as feedback information for any sort of correction of the process trajectory. Similar studies were performed by Dallin [112] for prediction of the acid number during the production of polyesters. 

The team monitors the percentage of critical work completed and charts the results on a monthly basis (Fig. 18.6). The chart includes each month s performance score, a 12-month moving average helpful in highlighting trends, and an indication of the team s improvement goal. Feedback, reinforcement, and corrective actions are often facilitated through the addition of handwritten notes on the charts that are posted in the work area to reinforce excellent performance and to pinpoint improvement needs. 

In this chapter, we first introduce traditional process monitoring techniques (Section 21.1) that are based on limit checking of measurements and process performance calculations. In Section 21.2, the theoretical basis of SPC monitoring techniques and the most widely used control charts are considered. We also introduce process capability indices and compare SPC with standard automatic feedback control. Traditional SPC monitoring techniques consider only a single measured variable at a time, a univariate approach. But when the measured... 

The periodic summaries on accident statistics are distributed quarterly. They provide feedback on SHE performance to line management and the SHE organisation. Ymer s quarterly report contains control charts on the accumulated LTl-rate and the TRI-rate since the start of the year, distribution of accidents by accident type, injured part of body, etc. An edited summary of each accident case is also presented. The database helps in the production of standard reports and makes it possible to tailor these to the needs of each department. 

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