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Calculation tool for determining the PWHT parameters
  • PREMIUM
Hollomon-Jaffe Parameter: Minimizing negative effects through multiple PWHT Cycles
Leakage rate conversion
Hydrogen generator systems – safety requirements
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Piping Codes suitable for PED applications?
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Additional requirements for welding procedure qualification (WPQR) in accordance with EN 13445-4 clause 8.3
Carbon Equivalent formula for steel – An overview
CE (IIW) – Carbon Equivalent Calculator

Category: Pressure Equipments - FAQs

PWHT – EN 13445-4
Calculation tool for determining the PWHT parameters

The Hollomon parameter calculation, using the hold temperature and hold time, can be performed using the calculation tool to determine optimal PWHT parameters. The (more…)

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PWHT – EN 13445-4
Hollomon-Jaffe Parameter: Minimizing negative effects through multiple PWHT Cycles

In 1945, Hollomon and Jaffe [1] published fundamental studies on the relationship between tempering temperature and tempering time required to achieve a specific hardness. (more…)

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Spectacle blind
Spectacle Blinds and other Line Blinds

Understanding the difference between a Spectacle Blinds and a Line Blank is essential for ensuring safety and functionality in piping systems. Spectacle Blinds ( (more…)

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Welding requirements
Additional requirements for welding procedure qualification (WPQR) in accordance with EN 13445-4 clause 8.3

EN 13445-4 fulfils the requirements of Annex I, Section 3.1.2 of the PED for permanent joints such as welded joints and refers to harmonised (more…)

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weld joint categories
ASME BPVC Sect. VIII: Welded Joint Locations Categories

The ASME BPVC Section VIII Div. 1 and Div. 2 categorised weld joints , which is crucial for radiographic testing, determining weld joint efficient, (more…)

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Gasket Selection
Gasket selection for industrial piping EN 13480-3

Gaskets are an integral part of many flange connection of industrial piping EN 13480 and other connections like man hole of pressure vessels or (more…)

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pressure gauge
ASME BPVC Sect. VIII Div. 1 – minimum, calculated and maximum test pressure

Successfully passing this test according to ASME Section VIII Div. 1 UG-99 is the ultimate proof of your vessel’s integrity and safety and is (more…)

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ASME Certification Mark
ASME BPVC latest Edition – Major Changes

The ASME BPVC Edition 2025 – The major changes and will become mandatory since 1st January 2026. The Boiler and Pressure Vessel Codes are published on a two-year cycle with a … more

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orifice
Orifice plate and orifice flanges

An orifice plate is a device used to measure flow rate, reduce pressure, or restrict flow in pipelines, characterised by a thin plate with (more…)

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