【Weekly Question 20090615】How to evaluate an excellent control room?

1. Keep the floor clean and tidy; shoes must be changed or shoe covers worn when entering the control room. 2. Unauthorized persons are not allowed to enter the control room; other individuals who wish to enter must obtain approval from the relevant authorities. 3. Data cannot be copied using USB drives or similar devices on the computers in the control room. 4. No noise or rough behavior is permitted inside the control room

Rules need to be established from the beginning; the key lies in enforcement, with no exceptions. Only in this way can the environment in the control room be maintained.

1. Specified indicators for the “four rates” of instruments in a properly maintained control room: (1) The rate of intact instruments should be over 98%； (II) The utilization rate of instruments is over 99% ； (III) The instrument control rate exceeds 98% ； (IV) The leakage rate at the static seal points of the instruments is below 0.2‰. 2. Standards for the proper operation of instruments in the control room: (i) All types of instruments must be sensitive and accurate, with their accuracy and sensitivity not falling below the permitted levels ； The instrument error and drift meet the technical requirements specified in the instrument manual, and there is no indication of over-range or a reading at zero. (II) Under normal operating conditions, flow meters should be used within 1/3 to 2/3 of their full range, while other meters should be operated within 20%–80% of their full range. On-site pressure meters must have a maximum warning limit marked, and they should be selected and installed correctly. (III) The process adjustment and control are stable, with the fluctuations in the recorded curves not exceeding the allowable values for the process parameters. (IV) The printed and recorded drawings shall be clear with distinct colors, the drawings shall be neat, and the recorded curves shall not have any breaks. (5) Error-free operation, with no production fluctuations or accidents such as unplanned shutdowns caused by instruments. 3. Standardized requirements for cleanliness and order in the instrument control room: (1) Rooms such as cabinet rooms, operation rooms, shift change rooms, and restrooms should be kept clean at all times; there should be sufficient and proper lighting, all tools and equipment should be available and in good condition, and all items should be neatly arranged with no clutter. (II) The control room shall have an independent air conditioning system to maintain the indoor temperature between (18-25)°C. The air conditioning system is managed by the production workshop. (III) Eating is strictly prohibited in the control room; it is not allowed to drink water or beverages or to place water cups in front of the instrument panels, DCS engineer stations, and operation stations. The environmental hygiene of the main control room is cleaned promptly on a shift basis by the production workshop, while the environmental hygiene of the engineer’s stations and cabinet rooms is cleaned weekly by the instrumentation workshop, to ensure that the entire control room remains clean. (IV) Fire-fighting equipment must be installed in the control room in accordance with regulations, and safety officers in the production workshops should conduct regular inspections to ensure it is in good working condition. (5) The entrances to cable ducts and similar areas in the control room shall be equipped with measures to prevent small animals such as rats from entering, in order to avoid accidents. (VI) The floor of the DCS control room should be anti-static, and the installation of any type of carpet is strictly prohibited to prevent the hazards caused by static electricity. (7) The use of various wireless communication devices is generally prohibited in the control room. If it is necessary to use walkie-talkies for tasks such as instrument calibration or process adjustments, permission must be obtained in advance from the production workshop, which shall also implement appropriate preventive measures. (8) The operation stations and instrument panels in the control room shall be installed neatly, ensuring they are level and aligned properly. (IX) The operation stations, field instruments, insulation boxes, protection boxes, and gauge faces are free from contaminants, paint peeling, damage, and rust. (10) The piping and wiring on-site and within the panel are neatly arranged, in compliance with installation specifications; the wire labels are clear, accurate, and complete.

This post was last edited by wfwj7221 on 2009-6-18 11:52. How to evaluate an excellent control room? 1. Rational and user-friendly design and layout of cabinets ； 2. The number of cabinets and associated equipment must comply with relevant standards regarding the size of the control room ； 3. Robust anti-static and lightning protection measures ； 4. Keep the room temperature at around 20 degrees Celsius, with no clutter inside ； 5. The cabinets and equipment should be clearly labeled ； 6. Keep it within the allowed range ； 7. Cabinets and equipment are clean and dust-free ； 8. Fire protection facilities are in good condition and properly positioned ； 9. Doors and windows are in good condition, and the lighting design meets the standards ； 10. Maintain a safe distance between UPS units and the control room ； 11. There are warning signs prohibiting non-staff from entering.

What I occasionally notice is mainly cleanliness, as well as temperature and humidity