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New reference point for Tee limits

2023-08-19 Tee limit definition - Rev.2

Details
Last Updated: 22 August 2023

Summary

The purpose of this document is to propose a piping tee dimension definition for standard tee- and custom designed tee calculation in EN 13480-3.

The previous proposal with a straight-line distance definition for the limits, from the run side and branch side, resulted in significant differences with the EN 10253-2/4 approach. The limits are the lines that define borders of the pressure area and the material area in the calculation in Clause 8.

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Tee crotch

2023-02-08 Tee limit definition - Further details

Details
Last Updated: 21 August 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: 21 August 2023

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: 21 August 2023

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: 21 August 2023

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: 21 August 2023

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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2021-10-06 ASME B31.3 metric tables

Details
Last Updated: 21 August 2023

This article informs about the letter sent from Red-Bag to the ASME B31.3 committee subgroup materials SG-D.

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2021-09-04 ASME B31.1 joint efficiency

Details
Last Updated: 21 August 2023

There is sometimes confusion about the joint efficiency when you compare the ASME B31.1 and the ASME B31.3. The joint efficiency for the ASME B31.1 (2020) are included in the allowable stress values of Table A-1 (US Customary units). Be careful, because some tables are also available is SI or metric units.

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2021-05-04 Possible ambiguous result

Details
Last Updated: 21 August 2023

EN 13480-3 Clause 7.2.3 Possible ambiguous result

Red-Bag is member of the CEN/TC 267/WG3 workgroup. This workgroup is responsible for the maintenance and improvements of the EN 13480-3 Industrial Piping and Pipelines standard.

Red-Bag is developer and provider of software for the calculation according the EN 13480-3. The software is used by Notified Bodies to assess the validity of the engineering calculations submitted by plant owners, engineering companies and manufacturers.

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2020-11-05 Spanish Agent

Details
Last Updated: 21 August 2023

The international customer base is growing in all Spanish speaking countries including Spain in Europe and especially the countries in South America. Our goal is to provide easy communication for our customers. We are happy to announce that Red-Bag has an agent in Spain with whom customers can communicate in the Spanish language. Use this Spanish contact form to contact our agent.

  1. 2019-06-07 Flange bolt unloading
  2. 2019-05-14 User Day
  3. 2018-11-05 Red-Bag address change
  4. 2017-04-12 User Day

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