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Pressure Vessel Definition

The document defines pressure vessels according to the ASME Code and API standards. It states that pressure vessels are containers designed to hold internal or external pressure according to the ASME Code. The ASME Code provides requirements for materials, design, fabrication, and certification of pressure vessels. The API STD 510 standard covers in-service inspection, repair, and activities for pressure vessels in refining and chemical processes. It applies to vessels constructed to a code as well as non-code vessels. The document outlines the scopes and boundaries of pressure vessels according to these standards.

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862 views3 pages

Pressure Vessel Definition

The document defines pressure vessels according to the ASME Code and API standards. It states that pressure vessels are containers designed to hold internal or external pressure according to the ASME Code. The ASME Code provides requirements for materials, design, fabrication, and certification of pressure vessels. The API STD 510 standard covers in-service inspection, repair, and activities for pressure vessels in refining and chemical processes. It applies to vessels constructed to a code as well as non-code vessels. The document outlines the scopes and boundaries of pressure vessels according to these standards.

Uploaded by

alokbdas
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Pressure Vessel Definition

The Pressure Vessel Definition article provides you the definition and boundaries of
pressure vessel based API code and ASME Code.
Based on the ASME Code Section VIII, pressure vessels are containers for the
containment of pressure, either internal or external.
This pressure may be obtained from an external source or by the application of heat from
a direct or indirect source, or any combination thereof.

The ASME Code is a construction code for pressure vessels and contains mandatory
requirements, specific prohibitions and non-mandatory guidance for pressure vessel
materials, design, fabrication, examination, inspection, testing, and certification.
Pressure Vessel Definition - Scope
These scopes are based ASME Code Sec VIII Div 1

The vessel with maximum allowable working pressure(MAWP) higher than 15 psi

Inside diameter to be higher than 152 mm

No piping or piping component

No rotating or reciprocating Equipment

Not Water Vessel up to 300psi or 210F

Not within the scope of other Sections

Also for gas fired double shell heat exchangers < 50 psi

Not Steam Boilers with direct firing

Not for Human Occupancy (PVHO)

Boundaries

The welding end of the first circumferential joint for welded connections

The first threaded joint for screwed connections

The face of the first flange for bolted, flanged connections

The first sealing surface for proprietary connections or fittings

Non pressure parts welded directly to a pressure retaining surface

Pressure retaining covers

Pressure relief devices

What is API Code Definition from Pressure Vessel ?

Contrary of ASME Code Sec VIII, which was developed for construction, the API STD
510 covers the in-service inspection, repair, alteration, and rerating activities for pressure
vessels.
This inspection code applies to all refining and chemical process vessels that have been
placed in service.

What is the API STD 510 coverage?

Vessels constructed in accordance with an applicable construction code

Vessels constructed without a construction code (non-code)A vessel not


fabricated to a recognized construction code and meeting no known recognized
standard

Vessels constructed and approved as jurisdictionally special based upon


jurisdiction acceptance of particular design, fabrication, inspection, testing, and
installation

Non-standard vesselsA vessel fabricated to a recognized construction code but


has lost its nameplate or stamping.

- See more at: http://www.inspection-for-industry.com/pressure-vesseldefinition.html#sthash.C0VnRhhj.dpuf

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