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  1. dvd111

    Running Steam-Assisted Flare without steam

    Dear All, We are going to change tip of flare to a steam-assisted type. The question is that since the steam piping is not ready, is it possible to put the new tip in service without steam injection? is there any chance of burn out of steam nozzles ? If yes, can we use air instead of steam...
  2. dvd111

    standard for color code

    Thanks all for your valuable comments
  3. dvd111

    standard for color code

    Hi all, Does anyone knows about some standard for process and utility piping color code?
  4. dvd111

    REGENERATION GAS DESIGN

    Dear Georgeverghese, The suction pressure of booster compressor is 30.5 bar. This booster is a small machine connected to an expander.
  5. dvd111

    REGENERATION GAS DESIGN

    Dear All, In C2+ recovery plant a stream of 30000 kg/hr natural gas is branched from main sales gas stream for regeneration of C3 and C4 sulfur treaters. This stream has a pressure of 31 bar. Regeneration gas is heated, entered to the treaters and and sulfur-rich gas is re-injected to the sales...
  6. dvd111

    Roles and Responsibilities of Process Engineer

    Dear All, I need a document that shows a framework for roles and responsibilities of process engineer in an operating plant. I searched the web; most of them related to projects not operational process plants. Does anyone can help me or send me such a document including job description...
  7. dvd111

    Equal Percentage Control Valve for Level Control

    Dear All, In our process plant, there is a horizontal drum containing water. Water level is controlled by a Level Control Valve (LV) on the discharge line of a vertical pump installed in the drum. Pump data: Max. Capacity=4.6 m3/h Head @max. capacity=45 m Max. operating temp.=145 C Control...
  8. dvd111

    KPI for Process Engineering Department

    KPI stands for "Key Performance Indicator"
  9. dvd111

    KPI for Process Engineering Department

    Dear All, As process engineering manager of a petrochemical plant I need some KPI to evaluate the performance of my staff and department. As you may know, Process Engineering Dept. is involved in different activities including: - Production Planning and Control - Evaluation and confirmation of...
  10. dvd111

    Engineering Cost Compared to Total Cost

    From "plant design and economics for chemical engineers" by S. Peters: The capital investment for engineering and supervision (design,engineering,drafting,purchasing,accounting,cost engineering,...)is approximately 30% of the purchased equipment cost or 8% of total direct costs of the...
  11. dvd111

    Engineering Cost Compared to Total Cost

    It is different and depends on the size and type of the project. But in general it is in the range of 3% to 5%. I will investigate and may send you more details later.
  12. dvd111

    Positive Heater Draft

    I have a more general question: How pressure in the natural draft furnace remains negative? What is the principle?
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