Vijay Sarathy

Dear Engineers,

There is the question of whether a Relief valve's Set pressure [SP] should be equated to the vessel design pressure [DP], or the Max Allowable working pressure [MAWP]

As it follows with a simple explanation,

1. Design Pressure [DP] is based on Minimum wall thickness of the vessel, calculated using engineering standards.

2. MAWP is based on commercially available plate sizes in the market, WITHOUT corrosion allowance [CA].

3. MAP is based on commercially available plate sizes WITH corrosion allowance included.

Point,

- In a brownfield job, the relief valve set pressure [SP] can be equated to the MAWP, because the vessel is already constructed and is running in the process facility.

- Whereas during the design stage in a Greenfield job, if the vessel's plate wall thickness is not available, then the RV set pressure can be equated to the Vessel's design pressure [DP].

- But when the vessel is constructed with commercially available plate sizes, the Relief Valve's Set Pressure can be updated to MAWP.

- However in any case, the RVs Set point must never exceed MAWP.

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In case you'd like to learn how to estimate the MOP, DP, MAWP, MAAP, MAP and perform relief valve sizing for Single RV, multiple RVs, fire case and non-fire case👇, check out Chapter 36, page 198 of my free e-book on Upstream Oil & Gas Design 👉https://lnkd.in/gXc4EE3r

#engineers #chemicalengineers #mechanicalengineers

Dear All,

I hope this sums up the difference between a Scientist & an Engineer! 😁

Dear Graduate Engineers,

Merely doing “research“ is of no use, unless you bring the abstractness to life. This is also why university syllabus & courses needs to be more industry & manufacturing oriented!

If your education doesn’t teach you to build something tangible, then a copy of Midsummer Night’s Dream by Shakespeare is a better option! 😁😁

#engineers #chemicalengineers #mechanicalengineers