Process Control Engineering Work Authority to Prevent Setting Errors
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Solution Overview
Problem
In large-scale process control systems, the increased number of workers involved in engineering leads to variations in skill levels, resulting in potential differences in engineering quality and increased chances of erroneous settings due to redundant or mistaken work, which can negatively affect the entire system.
Innovation Solution
An engineering assistant system comprising an engineering server and client apparatus that creates and manages work lists, including work instructions, authority lists, and user authority lists, to ensure that workers perform tasks within their capabilities, preventing redundant work and errors by setting protection flags for completed tasks and modifying work authorities as necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple workers perform setting work in parallel to shorten construction time, then productivity is improved, but the risk of erroneous setting and redundant work increases
Solution Approach 1:
The system performs preliminary actions by automatically generating work lists, authority lists, and protection flags before workers begin their tasks. The server apparatus pre-defines the scope of work for each worker based on their authority level, and sets protection flags on items that have been or will be worked on, preventing redundant or erroneous settings before they can occur.
Solution Approach 2:
The system implements continuous feedback mechanisms where the server apparatus monitors work progress, detects when work has been completed, and automatically updates protection flags and authority lists. This feedback loop ensures that other workers receive real-time information about completed tasks, preventing them from performing redundant work or making erroneous settings.
2Reliability
If work authority is restricted to prevent errors, then engineering quality is improved, but worker flexibility and ease of operation deteriorates
Solution Approach 1:
The system makes work authority dynamic rather than static. Authority lists are automatically updated by the server apparatus based on real-time work progress and protection flag status. Workers can access and modify items within their current authority scope, and their authority automatically expands or contracts as work progresses, providing both protection and flexibility.
Solution Approach 2:
The system enables workers to self-manage their own work within defined boundaries. Each worker can independently perform tasks within their authority scope without requiring constant supervisor intervention. The automatic updating of authority lists and protection flags allows workers to autonomously navigate their work boundaries while maintaining system-wide consistency.
Data Source
AI summary
An engineering assistant system 1 includes: an engineering server 10 that issues a work list including information related to work necessary for performing the engineering of a process control system 100; and an at least one engineering client 20 that grants work authority for each worker based on the work list issued by the engineering server 10 and makes it possible to perform work on a constituent apparatus that constitutes the process control system 100 within a range of granted work authority.