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Tee crotch

2023-02-08 Tee limit definition - Further details

Details
Last Updated: 15 February 2023

Introduction

The EN 13480-3 scope is specified as ‘the design and calculation of industrial metallic piping systems, including supports. The design criteria, as laid out in clause 4, include the internal and/or external pressure amongst others

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EN 10253-2 calculations

2022-11-14 EN 10253-2 calculations

Details
Last Updated: 22 November 2022

The dimensions standard EN 10253-2 (and also EN 10253-4) have further detailed the calculations of EN 13480-3. The EN 10253-2 calculations are based on the EN 13480-3 but tailored to the EN 10253-2 fittings.The fitting types are elbow, tee, reducer and cap. The calculations are now part of our E80 application.

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2022-08-18 EN 1591-1 widely spaced bolts

Details
Last Updated: 18 August 2022

There are cases with manhole blind flanges where the number of bolts are not enough for a proper leak tight connection with the flange at the storage tank side. The blind flange takes the shape as an ‘umbrella’ around the bolts.

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2022-08-08 ASME B16.47A - 42” 150# flange

Details
Last Updated: 08 August 2022

This document is for discussion, comments and suggestions. The purpose is to demonstrate the dimensions of the 42” 150# flange in relation to bolt load requirements for leak tightness. The 300# flange is used to illustrate the differences and the cause for possible tightness problems in case a spiral wound gasket is used

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2022-02-15 EN 10253-2/4 tee validation

Details
Last Updated: 16 February 2022

Introduction

This document is for discussion, comments and suggestions. The purpose is to compare and validate the EN 10253-2/4 strength calculation in B.4.4 and B.5.3 with the EN 13480-3 Clause 8. The EN 10253-2/4 indicate that the calculations are based on the EN 13480-3. This document highlights possible differences.

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  1. 2021-10-06 ASME B31.3 metric tables
  2. 2021-09-04 ASME B31.1 joint efficiency
  3. 2021-05-04 Possible ambiguous result
  4. 2020-11-05 Spanish Agent

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