Design Quality Improvement – Bulletin 03 4/29/19 Prepared by – Todd Sisti, PE

Orifice Plate Flow Meter Piping Requirements

Quality Concern:

Improper installation of Orifice Plate Flow Meters will cause errors in flow readings.

This document is written to address Orifice Plate type flow meter piping. There are numerous types of flow meters that all have different requirements for piping installation. The designer should always consult the Instrument Engineer or Manufactures literature on final installation requirements for any Flow Meter. With that being said; there are still some practical design applications within this document that could apply to many flow meter types.

Reducing Errors in the Design Office – Bill Kimber

How can we reduce the quantity and severity of errors in the design office? As much as 37% of project increases in cost and schedule can be traced back to changes in the original contracted scope.

A change in scope can been defined as; “an unexpected development that will change the requirements and results in cost growth and time extension.”

All Contract changes must be well documented using procedures that should already be in place. Procedures are designed to allow accurate documenting of project changes and the transmission of updated costs to the client for approval. The costs and terms are added to the original project documentation after client approval and become part of the amended contract.

Design Quality Improvement – Bulletin 02 4/29/19 Prepared by – Todd Sisti, PE

Design of Pipe Expansion Loops

Quality Concern:

What is the practical range of axial pipe line growth that a designer should plan for in the design of an expansion loop?

• In Case 1 below the expansion loop is absorbing up to 20” (10” per side) of pipe line growth without a resulting pipe stress problem.

• In Case 2 multiple expansion loops are designed which absorb only 1” to 2” of axial line growth.

Design Quality Improvement – Bulletin 01 4/29/19 Prepared by – Todd Sisti, PE

AUXILIARY PIPE SUPPORTS – CONSIDER THE COST ($)

Quality Concern:

Auxiliary Supports are sometimes referred to as Engineered Supports, or Special Supports. Regardless of what you call them, these supports are custom designed for a specific application. Sometimes they are used as a gang support to support many lines, and other times they are custom to support a special pipe stress need. Regardless of the need, the support designer should consider the cost of the design of the support and plan for economics in design.

Please join Louisville SPED for a presentation concerning

Pyrogel Insulation by Aspen Aerogels.

June 6^th, 2019 from 12:00 PM to 1:00 PM EST.

Have some fun with a potential flow simulator with curl noise. This is by Ricky Reusser and is done with HTML, CSS and Javascript.

Try adjusting the parameters wit the controls at the upper left of the screen.