I have a question regarding liquid ammonia storage tanks
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I have a question for everyone. According to the original documents for the liquid ammonia storage tank, the maximum operating pressure required is 0.007 Mpa, while the design pressure is 0.026 Mpa. The pressure measurement range of the on-site pressure transmitter is 0–6 Kpa, and the readings shown on the on-site gauge are below 6 Kpa. However, the actual operating pressure is required to be controlled at 7-18 Kpa. If the design pressure is 0.026 Mpa, then the operating pressure should be around 17 Kpa. How can this actual pressure being higher than the maximum operating pressure be explained? :handshake
The site wasn’t built according to the design, right? If 17 kPa is used, then your on-site gauge is useless
The operating pressure should be maintained between 7-18 Kpa. This differs from the conditions provided for the design; the design was based on those previously given, so it is necessary to provide a new design for calculation purposes. Why is the actual operating pressure on site so different from the design value, by such a large margin? Is it an operational issue or are the data incorrect?
The operating pressure is 0.007 MPa = 7000 Pa, while the design pressure is 26 kPa. The range of the pressure transmitter and gauge should be 0–30 kPa. Generally, the operating temperature at the surface should fall between one-third and two-thirds of the full scale, and the full scale value should be higher than the design value of the equipment to ensure safety.