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Chexpress - June 11, 2013

Posted by ChristaS in ChExpress Blog, in ChExpress Blog 11 June 2013 - - - - - - · 403 views
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North America

Workforce Training Program Funding
ExxonMobil will fund a $500,000 workforce training program to enable Houston, Texas’ leading community colleges to prepare thousands of local residents for jobs in the growing local chemical manufacturing industry. The incentive will build on the success of the Lee College ExxonMobil Process Tech...
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Natural Gas Pipeline Blowdown Time Calculation

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, in Technical 02 June 2013 - - - - - - · 1,138 views
natural, gas, pipeline, blow and 5 more...

Natural Gas Pipeline Blowdown Time Calculation I have posted a lot of excel spreadsheets on the Cheresources community related to process engineering calculations. I also have posted blog entries where I have outlined the steps along with equations to build an excel spreadsheet for various calculations.
 
The idea of posting blog entries with equations and calculation steps is to encourage young...
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Mobile Cheresources.com

Posted by Chris Haslego in Community Admin Blog, in Community Updates 28 September 2012 - - - - - - · 2,059 views
ipad, iphone, android and 2 more...

Mobile Cheresources.com So look, most of us are engineers.  We're still trying to get our hands around the mobile revolution right?  Maybe for some people, it's been easy to leave our desktop or laptop computer behind...but not for us.  There's no question that it will be a long time before most engineers can leave their "real" computers behind, and I realize...
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Tank Blanketing Valves

Posted by Ferz99 in Tank Blanketing Valves, in Technical 10 September 2012 - - - - - - · 1,864 views
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Tank Blanketing Valves The Tank Blanketing Technique Tank blanketing, also known to as tank padding, is the procedure of smearing a gas to the empty space in a storage tank or container (the term storage container refers to any container that is used to store products, regardless of its size). This techinique is used for a variety of reasons and typically involves using a buffer...
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What Is A Steam Trap?

Posted by Zeeshan Amin in Zeeshan Amin's Blog, in Engineering 17 June 2012 - - - - - - · 2,951 views
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What Is A Steam Trap? A steam trap is an essential element of a steam distribution piping system. As steam flows through a pipe, it cools off due to heat losses and converts into hot water; this hot water is called condensate. The function of a steam trap is to bleed off hot water so that only steam remains in the system. In addition to condensate removal, a steam trap also...
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Dust Hazard Assessment

Posted by Mark Roote in Mark Roote's Blog, in volume, length to diameter, dust accumulation 07 October 2011 - - - - - - · 1,084 views
cyclone, baghouse, nfpa, osha and 1 more...

Anyone working in a facility that handles dust (which is essentially every facility) is trying to get ready for the crackdown from OSHA and NFPA. While OSHA and NFPA are still trying to figure out the best way to implement new standards, what those standards will be and how to enforce the standards, NFPA and OSHA have come out with some temporary...
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A Different View Of Harrell's Colebrook-White Solution

Posted by Harrell in Harrell's Blog, in Technical 01 October 2011 - - - - - - · 1,005 views
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For some reason, most people still do not understand how my Colebrook-White solution works.

It has been tested, and re-tested over and over, and always gets the right answers if you don't make
a weird error.

This may help those who are questioning "Why does it work?"

In the Wikipedia you can read about the Lambert W function. Here's a...
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Chexpress - May 28, 2013

Posted by ChristaS in ChExpress Blog, 27 May 2013 - - - - - - · 1,451 views

 North America

Refinery project
Worldwide Energy Consortium, Inc. is beginning the initial Engineering/Permitting phase for its new refinery located near Gardendale, Texas. The site was chosen to take advantage of the oil production from the Eagle Ford Shale play. The facility is expected to be operational by the last quarter of 2014.
  Labo...
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Perforated Pipe Distributor Sizing Calculations

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, 16 May 2013 - * * * * * · 3,210 views
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Perforated Pipe Distributor Sizing Calculations Perforated Pipe Distributors have been discussed many times on “Cheresources”. How to design a perforated pipe distributor also known as a sparger has been a frequent question on the forum. Some general replies without providing in-depth methodology of sizing a distributor can be seen in the queries raised.

Perry’s Handbook (8th  Editio...
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Archiving And Searching Updates

Posted by Chris Haslego in Community Admin Blog, 23 July 2012 - - - - - - · 1,535 views
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Archiving And Searching Updates As our community continues to grow, we look for new ways to manage the tremendous amount of information at the site.  A recent change that we've made is to archive forum topics that are beyond 18 months old.

As posts are placed into "Archive" status, they will be at the same URL address, but they will not be able to receive new replies. ...
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What Is A Piping System

Posted by Zeeshan Amin in Zeeshan Amin's Blog, 28 May 2012 - - - - - - · 2,266 views
piping, system

What Is A Piping System Piping System

A piping system is a network of pipes, fittings and valves intended to perform a specific job i.e. to carry or transfer fluids from one equipment to another.  The plumbing network supplying water at your home is a common example of a piping system. Other more rigorous examples include steam piping in a power plant, milk...
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Existing Equipment Strength Verification

Posted by Mark Roote in Mark Roote's Blog, 07 October 2011 - - - - - - · 1,242 views
steel plate, baghouse, map

Those of you that have used the spreadsheets created by "psafety" (MAP package 1, MAP package 2) may have run into some...
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Harrell's "funnel" To The Colebook-White Solution.

Posted by Harrell in Harrell's Blog, 27 September 2011 - - - - - - · 721 views
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This is a PDF file with some tables and plots, to show visually how my method works. I call it a funnel, because the procedure quickly guides to maximum accuracy. You will see that after step 2, the accuracy will be amazing. I already knew the solution to the Re and Rr would give 1/sqrt(f) about 4, so I plotted initial guesses of from -4 (that is a...
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Studying Chemical Engineering In Malaysia

Posted by rowanlim in Viewpoint, 01 November 2010 - - - - - - · 4,511 views
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I wrote this entry thinking about Malaysian students coming to the end of their high school life, 17 yr old youngsters who thought "Hey chemical engineering sounds like a good field, but how do I go about it in Malaysia?" This was the question I asked myself 5 yrs ago & I hope to present my view as unbiased as possible & maybe a young...
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Screw Feeder Auger Shafts

Posted by LRS in Lifetime-Reliability Blog, 09 August 2010 - - - - - - · 1,500 views
screw, break, shaft, feeder

Analysis of a broken screw feeder shaft on a granular Copper Sulphate Bagging Hopper Feed Screw


Are your screw feeder and trough screw conveyor auger shafts snapping in half? If you have rotating shafts breaking at the centre of the span then you quite likely have a metal...
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