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PSV Sizing

Enough is enough. We are just trained to read PFDs and P&ID developed by others and boast about it. You see, preparation and development of PFD and P&ID are just carried out based on some algorithm to which you do not have any access! EIEPD PFD and P&ID Development course provides you with all of these design notes for typical equipment from towers to pumps. More importantly you learn where to prepare P&ID pages: Auto-Cad P&ID. We guarantee your success if you follow our instructions closely.

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PSV Sizing

Who should take the course?

1. Process engineers

2. Control room operators

3. Chemical engineers

4. Instrument engineers

5. Mechanical engineers

Who should take the course?

1. Process engineers

2. Control room operators

3. Chemical engineers

4. Instrument engineers

5. Mechanical engineers

Part 1: Scenarios and Relief Load Calculation

Chapter 1: Process Description

Chapter 2: Scenarios – EIEPD Equipment-Based Approach

In this chapter/sessions, different scenarios suggested by API-521 are discussed but with a practical approach so that process engineers can easily detect/recognize scenarios for the whole units in a process plant. The common scenarios discussed are fire scenario, control valve failure scenario, heat exchanger tube rupture scenario, hydraulic expansion and reflux failure scenario.

Chapter 3: EIEPD Methodology-Based Relief Load Calculation

Relief load calculation for fire scenario:

Example 1: Relief load calculation for fire unwetted-scenario using Aspen Hysys and sizing excel-sheet.

Example 2: Relief load calculation for fire unwetted-scenario using sizing excel-sheet.

Example 3: Relief load calculation for wetted-scenario using Aspen Hysys and sizing excel-sheet.

Example 4: Relief load calculation for wetted-scenario using Aspen Hysys and sizing excel-sheet.

 

Relief load calculation for control valve related scenario:

Example 5: Relief load calculation for control valve failure scenario using Aspen Hysys

Example 6: Relief load calculation for closed-outlet for ID fan steam turbine.

Example 7: Relief load calculation for closed-outlet for FD fan steam turbine.

Example 8: Relief load calculation for closed-outlet for steam-drum.

Example 9: Governing scenario example

Example 10: Relief load calculation for inadvertent valve opening scenario.

 

Relief load calculation for tube rupture scenario:

Example 11: Relief load calculation for heat exchanger tube-rupture using Aspen Hysys and sizing excel-sheet (Category 1)

Example 12: Relief load calculation for heat exchanger tube-rupture using sizing excel-sheet (Category 1)

Example 13: Relief load calculation for heat exchanger tube-rupture using sizing excel-sheet (Category 1)

Example 14: Relief load calculation for reboiler tube-rupture using sizing excel-sheet (category 2)

Example 15: Relief load calculation for reboiler tube-rupture using sizing excel-sheet (category 2)

 

Relief load calculation for hydraulic expansion:

Example 16: Relief load calculation for first water-cooled heat exchanger

Example 17: Relief load calculation for second water-cooled heat exchanger

Example 18: Relief load calculation for third water-cooled heat exchanger

 

Relief load calculation for reflux failure:

Example 19: Relief load calculation for first tower reflux failure

Example 20: Relief load calculation for second tower reflux failure

Chapter 4: Individual Overpressure Causes and Their Relieving Rates – Based on API-521 (4.4)

In this chapter the API pages are scrutinized and the followings are discussed in greater depth. While previous chapter is equation-based, this chapter is concept-based.

 

4.1-Closed outlet

  1. Description
  2. Consideration for pumps
  3. Consideration for reciprocating compressors
  4. Relieving rate estimation

 

4.2-Cooling or reflux failure

  1. Description
  2. Relieving rate estimation for total condensing
  3. Relieving rate estimation for partial condensing
  4. Relieving rate estimation for air cooler fan failure
  5. Relieving rate estimation for louver closure

 

4.3- Accumulation of non-condensables

4.4-Overfilling

  1. General
  2. Mitigation measures
  3. Level instruments

 

4.5-Abnormal process heat or vapor input

  1. Inadvertent valve opening
  2. Check valve leakage or failure

 

4.6-Hydraulic expansion

  1. Causes
  2. Sizing and set pressure
  3. Special cases

 

4.7-Fire

  1. General
  2. Open pool fire
  3. Fire relief loads
  4. Air-cooled heat exchangers
  5. Jet fire

 

4.8-Heat transfer equipment failure

  1. Shell and tube heat exchangers
  2. Double-pipe heat exchangers
  3. Plate-and-frame, Spiral-plate, and Welded-block Heat Exchangers

 

 

 

4.9-Utility Failure

  1. Electric power failure
  2. Loss of heat

 

Part 2: Pressure Relief Device Types and Orifice Sizing

Chapter 5:

1.Conventional PRVs

2.Balanced PRVs

3.Pilot-operated PRVs

4.Cold Differential Test Pressure (CDTP)

5.Restricted lift pressure-relief valves.

6.Rupture disk device

Chapter 6: Procedure for sizing

1.API Effective Area and Effective Coefficient of Discharge

2.Backpressure

3.Relieving pressure

4.Sizing for critical flow-Example 1

5.Sizing for subcritical flow-Example 2

6.Sizing for steam relief-Example 4

7.Sizing for liquid relief requiring capacity certification-Example 5

8.Sizing for liquid relief requiring capacity certification-Example 6

 

Chapter 7: Methanol Project Examples-continued

In this chapter orifice sizing for previous examples are performed.

Part 3: Construction, installation and material selection notes

Chapter 8:

1.PRD location

  1. Inlet Piping Requirements
  2. Discharge Piping
  3. PRV Stability
  4. PRD Isolation (Stop) Valves

6.Material selection

Part 4: Flare Header Sizing

Chapter 9:

1.Flare header summary development

2.Flare header sizing using Aspen Flarenet

Instrumentation

Session16: Transmitters

In this session a brief but practical presentation towards flowmeter and temperature transmitter will be given by the speaker; Afterwards, he provides instruction on piping layout requirement for transmitters, how to show them on P&ID and which notes should be provided before issuing P&ID.

Session 17: Miscellaneous

In this session the followings will be covered:

– Requirement of temperature and pressure compensation

– Failure action of control valves

– Special instrumentation (online stream analyzer and custody transfer)

Session 18: Typical instrument indication on P&ID

Session 19: Example

In order to help the learners better understand the aforementioned arrangements, the instructor in this session provides an actual and practical example in which he tries to develop a P&ID page using Auto-cad P&ID.

Answer the following questions to help you take the course or not.

1. Are you able to draw a page of P&ID using Auto-Cad P&ID?

2. Do you know how to develop P&ID around air-coolers based on their controlling system and the fluid being single or mixed phase?

3. How much do you know about class break point, isolation philosophy, or battery limit?

4. Do you know that the piping layout around pumps changes based on their operating temperature and the type of pumping fluid?

5. How much do you know about furnaces and what to show on P&ID?

6. Do you know how to prepare and develop(not read) PFD from scratch?

 

Be honest with yourself and for each question give yourself a score out of 10. If the sum is less than 30, then take the course; if the score is between 30 to 50, consult with us. If it is more than 50, we think you don’t need to take it.

1.The PFD and P&ID Development using Autocad P&ID course will be available in both online and offline modes to enthusiasts. By online mode, the enthusiasts can participate in online classes while by offline mode, the enthusiast can only watch offline videos after purchasing the package.

2.Notice that the enthusiasts who choose online mode will also receive offline package so that they can review what they have learned in online classes.

3.It is obvious that in both modes, the whole package including videos, documents, excelsheets will be provided.

The PFD and P&ID Development using Auto-cad P&ID course will be introduced to engineering community in only one time-set. For each group maximum 25 registrations are allowed, aiming to keep the quality high.

Group A

Tuesdays and Fridays at 20.15-22.45 Tehran Time from 13 February onwards. The course will end on 22 March 2024.

Duration: 30 hr.

Notice: If the selected times are not suitable for you, you can register for offline videos.

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