Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Accumulation and Over-pressure: difference between accumulation and overpressure

745 views

Published on

Accumulation is pressure above the maximum allowable working pressure that vessel experience during high pressure event. Hence, when we say ‘accumulation’, its mean we are talking about the vessel or equipment.
On the other hand, Overpressure is pressure above the set pressure of the pressure safety valve that PSV experience during high pressure event. Hence, when we say ‘accumulation’, its mean we are talking about the pressure relief valve.

Published in: Engineering
  • Be the first to comment

Accumulation and Over-pressure: difference between accumulation and overpressure

  1. 1. Accumulation and Overpressure Varun Patel, B.E- Mechanical, PMP® 1
  2. 2. Accumulation and Overpressure 2 Chart Source :http://process-eng.blogspot.com/
  3. 3. Accumulation • Accumulation is pressure above the maximum allowable working pressure of the vessel that vessel will experience during the high operating pressure event • Accumulation is related to vessel • Refer chart 3
  4. 4. Overpressure • Overpressure is pressure above the setting pressure of the relief valve that relief valve experience before pressure start reducing • Overpressure is related to the pressure relief valve • Refer chart 4
  5. 5. Different Types of Pressure for Equipment 5 Hydro test Pressure 130% of Design Pressure Max. Allowable accumulation (fire) 121% of Design Pressure Max. Allowable accumulation Multiple valve – Non fire 116% of Design Pressure Max. Allowable accumulation Single valve – Non fire 110% of Design Pressure MAWP (Maximum Allowable Working Pressure) 100% of Design Pressure (Minimum or more) Design Pressure Operating Pressure 90% of Design Pressure Set Pressure of PSV
  6. 6. 50 % off on my udemy course click on the below link https://www.udemy.com/process- pipe-fittings-for-oil-gas- career/?couponCode=FB10 6 How to be an Expert in Pipe & Fittings for Oil & Gas Career

×