Dear Paul,
Beautiful website! In my web searches, I found the document 'computer calculation of a weldolet' on your site, but was unable to access it because I need a password.
Basically, we have just been carrying out FEA of a weldolet on a high-pressure piping system and were surprised to find very little information on the design and analysis of weldolets in the open literature. I would be very grateful if you could send me your information - if I use it, I will, of course, acknowledge the source.
Dr Isabel Hadley
Manager,
Defect Assessment Section,
Structural Integrity Technology Group,
TWI Ltd, Granta Park, Great Abington,
Cambridge CB1 6AL, UK
Tel +44-1223 891162 x2473
Fax +44-1223 893303
TWI has a web page on http://www.twi.co.uk
I have had a few requests for NEN-3650 and came across your web site trying to learn more. I have asked someone to buy me an English version of the NEN code and will correlate that document with your piece once I receive it.
The interest came from someone who doesn’t like our buried pipe modeler. He suggested the NEN document.
I agree with you about user knowledge and/or experience. But I see it a different way. As we add new analysis capabilities to the program, more information is required of the user to properly utilize the capability.
For example, we ask some simple soil parameters to define our restraints. It is not uncommon for a user, who knows we have this capability, to introduce himself to this field simply by reviewing our input requirements and have no idea what these parameters are or how they are applied.
Pipe stress analysis used to be a specialist application. With today’s software, management (incorrectly) assumes the generalist can do it.
Thanks for the articles.
I’ll keep in touch.
Dave
Dear Mr. Voorhaar,
I was on the Web Site Pipestress and should thank you for the
splendid work done by you here, which is surely of lot of help to all the
piping engineer community.
I am interested on the paper computer calculation
of weldolet. Can you please provide me with the password to open this page.
Thanks again,
Ranjeet
Your article shure looks a great food for thought. The
information from various sources (references) you have
consolidated indeed reveals the indepth look you have
had into this matter.
Over the next couple of weeks I shall try to imply them
for practical purposes.
I shall be very thankful if you could provide me access to
the two related articles
ie.
'Case study of Delta Stretching of current flow
velocity' &
'Wave Loadings on an offshore riser'
Best Regards,
Shankar Shrivastava
PT SemPec
Jakarta/Indonesia
Thanking you,
regards,
Shankar Shrivastava
Piping - Betara Complex Development
Sembwang E&C
Indonesia
Mr. Voorhaar,
I am sincerely pleased to meet you in the web. Your page is very good.
The photos are really great!! I am the visitor number 22722 or so.
I am very fond of bird watching, but ocational, and amateur. I have no special equipment (400 or bigger tele) neither never make special trips to see the birds, but here in Argentina, you can find them every where.
I send you three pictures. The humbird (we call him "picaflor" o "colibri"), comes every day to our window at five o´clock. The foto was taken with a 200mm tele. The other one, is a kind of woodpecker ("pajaro carpintero") was taken in a National Forest near San Carlos de Bariloche, with a 150mm tele. I spent almost a film roll, because is allways beating his head against the tree, and moves it so fast, that you cant fix the image. 1/1000sec to freeze, and you have no light, because the forest is dark. If you are patience, you can find them very near.
The third picture is the "Hornero", he and she construct his nest with mud and straw, and is a prefect sphere. The picture is really bad, but you can see him in the construction process.
The second coincidence it is that am FEA analist, very interested in pipe stress, but also pressure vessels and civil structures. As you know Argentina is a very little country, in economics terms, though geographicaly speaking is very large, and as professionals we need to broad our target, and in consequence loosing deep of knowledge.
I should like to read your paper about design of weldolets.
The third coincidence is that I was born in 1949 to.
My english is really poor, I hope you had understood my words
Best regards
Sergio Urtiaga
Dear Mr. voorhaar, Mr. Voorhaar,
I am a design engineer in Denver and I am very interested in
viewing/downloading some of the excellent articles on your site. How do I
get a password? Thank you for your consideration,
From: Othón Brindis Dear Mr. Voorhaar, I have just discovered your very interesting specialized
web site and I
It's a cool and interesting web site about pipe stress.
My main responsibility is the pipe stress analysis in pressure pipeline in
several power plants ,I 'm sure that there are many articles in your website
that will be good for me and my colleagues for sure.
So I would like you to
provide me the password for approching some articles in order to study
respective case studies. I have no idea the password can be used together for
"
Case study of wave loadings
on an offshore pipeline " and "
Case study of Delta
stretching of current flow velocity "
If they are different, please give me both.
Your kindness will highly be
appreciated and thank you in advance.
Best regards
M.Nuttpon
From: Clark, Kevin
Send: vr 21-03-03 16:37
To:
Subject: Mail via Web page
Specifically I am very interested in the different stress
allowed by the different codes and how the Factors of Safety (FOS) are
integrated.
Please contact me at your convenience via email.
Kevin Clark
Send: wo 12-06-02 0:41
To:
Subject: Mail via Web page
My background is Civil Engineering, and I was involved as
a lead pipe stress
engineer in several projects, all related with Petrochemical and
Offshore
industry.
I found your web site while searching the internet for Pipe Stress issues.
I've found your site quite interesting.
I would like to review some of your articles in the "Hot Issues and
Technical Discussions" section but a password is required.
May I get a
password for this please?
I'm a Piping Engineer in Mexico, City with 17 years experience.
Thanks in advance,
José Othón Brindis Sandoval.
|
Hace varios dias, les envié una consulta y quisiera ampliarla,
quisiera saber que software debo instalar en una fabrica de
maquinaria para fabricar cartón, necesitamos soluciones del tipo
CAD-CAE, para diseñar las maquinas y los elementos que las
componen, haciendo simulaciones de ensayo de los elementos moviles
y calculos de esfuerzo para diferentes materiales, ademas
necesitamos organizar los planos de los diferentes modelos de máquinas,
asi como sus componentes.
Les ruego me envien información de los programas, precio y si es
necesario hacer un curso de aprendizaje.
Muchas gracias. Angel Amores.
|
Dear Mr. Voorhaar,
I have just discovered your very interesting specialised
web site and I believe it
deserves a lot of attention.
My background is Mechanical Engineering, and I was involved as a lead pipe
stress engineer in several projects (Romania
and Middle East), all related with
Petrochemical industry.
The software currently I use is CAESAR II.
Since I would like to study some of the technical papers listed on your
site, could you send me the passwords for:
SP102006.pdf and VVRDEGID.pdf ?
Best regards,
Marian Roman Nicolescu
Paul,
I found your web site while searching the internet for Pipe Stress issues.
I've found your site quite interesting.
I would like to review some of your articles in the "Hot Issues and Technical Discussions" section but a password is required. May I get a password for this please?
I'm a Piping Engineer in Houston, Texas with 25 years experience.
Thanks in advance,
Dear Mr. Paul Voorhaar,
Thanks you for your e-mail of today.
Nice to hear from you after all those years.
Stephen Thill
From: systech consultancy services
Good site! I fully agree with your comment that, "
Although most quality Here is some details about my association with field of
stress analysis.
Kevin Monroe
From: Leonard Stephen Thill
Send: do 14-03-02 10:20
To:
Subject:
Just think about this:
You may remember GOS PROJECT, Yes!
Gas Oil Septatin Plant, Aramco, Abqaiq,
Saudi Arabia 1977-1987
Send: Wednesday 21 November 2001 17:58
To:
Subject: Response on website via form on pipestress startpage
Has been providing piping design with stress analysis since 1972 when I
We have rectified large number of plant piping designed by leading European, American and Japanis firms and have solved recip.compressor problems for Indian arm of Dutch firm (Shell), analog reports of SwRI and TPD.
D. H. RAWAL, B.E.,M.E.,M.S.(U.S.A.)
SYSTECH CONSULTANCY SERVICES
21 & 22 AASRA APARTMENTS, 2ND FLOOR, (NEXT TO ST. CHARLES SCHOOL)
ST. ANTHONY STREET (VAKOLA VILLAGE ROAD), SANTACRUZ (EAST), BOMBAY - 400
055, INDIA.
PHONE: 91-22-618-4506 or 618-4787, FAX: 91-22-618-2737
E-MAIL: or
Visit us at: http://business.vsnl.com/systechconsultancy
TO: Mr Paul Voorhaar
AT: Voorhaar en Partners
Copies: Inger de Ru
Date: 20 XI 2000
Geachte heer Voorhaar
SUBJECT: Pipe Stress Analysis Programmes
Uw adres vond ik op het Internet als specialist op dit gebied, maar helaas
niet uw telefoonnummer. Binnenkort ontvang ik een handelsmissie vanuit de UK
die contacten zoeken in Nederland waarvan een op het gebied van plant design
en automation. Zou graag even hierover met u praten als dat lukt.
Met vriendelijke groeten,
hoogachtend,
Leo Zonneveld
Commercial Officer
High Technology Products
British Embassy
Lange Voorhout 10 - 2514 ED The Hague
Tel: 00 31 70 4270 304
Fax: 00 31 70 4270 346
Email:
Email:
Website: http://www.britain.nl
See UK Exporters Database at: http://www.tradeuk.com
Whereas every effort has been made to ensure that the information given
herein is accurate, British Trade International or its sponsoring partners,
The Departments of Trade and Industry and the Foreign and Commonwealth
Office, accept no responsibility for any errors, ommissions or misleading
statements in that information and no warranty is given or responsibility
accepted as to the standing of any firm, company or individual mentioned.
Servus Paul,
I love your site and your statements.... But then I'm another grumpy old guy with a lot of experience as well. Better to be smooth and slick for the bosses today. Anyhow back to work, I will check in again from time to time...
(Why Servus??? Mein Mutter und Vater were Osterreichers, I was the first born in the USA, seeing as how you are a "hollander" I thought I would use a Euro touch)
With Best Regards From Cleveland, Ohio USA
John C. Luf
From: Harry de Groot
Send: Tuesday, March 21, 2000 at 11:33
To: 'Voorhaar, Paul'
Subject: HEC E_mail adres en HomePage
Dear Paul,
It has been a longtime since I have spoken with you.
I found your site on the Internet by coincidence. I heard
about it through the grapevine. It looks good, I only wonder how it can become a
knowledge exchange platform. I don’t see anything from 2000.
The reason for this mail is a little addition. We do have
our homepage for some time now and are very busy with creating and promoting it.
You can know make a link to it in the table with Pipestress
software. The data are at the bottom of this mail.
..............
Oh well Paul, I wish you all the best. Let’s hear from you.
Greetings,
Harry de Groot
Consulting Engineer
Holland Engineering Consultants bv,
Mailbox: 1359 NL_3430 BJ NIEUWEGEIN
Tel: +31 (0)30 600 60 60
Fax: +31 (0)30 600 60 61
Hotline: +31 (0)30 600 60 66
URL: http://www.hecbv.nl
General:
Support:
on Friday, July 2, 1999 at 23:27:51
Dear Paul W. H. Voorhaar,
Some very interesting information, looking forward to seeing some of the articles translated to english (although both my parents were born in the Netherlands, I cann't read or speak Dutch).
Interesting
concept of providing a list of professional engineers with a
speciality in pipe stressing.
Looks like I have to wait another five years before being
eligable for the list, have been an engineering since 1975, but
only involved pressure equipment design including piping since
1990.
Keep up the good work.
Kind regards.
Frank Hendriks
City: Woodend
address: PO Box 360
Postal_code: 3442
State: Victoria
Country: Australia
) on Tuesday, August 3, 1999 at 20:00:03
Subject: Request for linking this site to an other interesting site.
I have noticed that your website has articles, etc. about various engineering subjects. I would like you to check out our "tip of the month" and possably add a link to it. www.sstusa.com/monthtip.html
George A. Starkey
City: San Jose
address: 1641 North First St. Ste. 175
Postal_code: 95112
State: CA
Country: USA
Phone: (408)452-8111
fax: (408)452-8388
Checked out and incorporated
Dear Sir,
You must know CEA systems as the distributor of CAESAR II and CAE
Pipe.
Your web-site
is most impressive, most of our current users could be found on
your website and the technical foundation is very strong.
I have a question: you mention the vendor R&K Consulting engineers for the program PLE. Could you give me a lead to contact them as I want to look for good software acc. to NEN 3650.
Sincerely
James Tauladan,
CEA Calculation
E-mail:
http://www.cea-int.com
Answer:
R+K Consulting
engineers
Adress:
Geestbrugweg 44
2281 CM Rijswijk ZH
The Netherlands
Phone: 31 70 390 68 90
name: Mr. Misa Jocic
Dear Mr. Voorhaar,
It was very pleasing to discover your web-site dedicated to piping stress analysis engineers. The only unclear aspect to me was whether it is addressed only to Dutch engineers or to a wider international community of piping stress analysts.
Presently I am working as a Principal Stress Analysis Engineer with Shedden Uhde in Melbourne, Australia. Likewise, I had to certify numerous calculations of fellow pipe stress analysts and in 17 years of my experience many times witnessed cases of misuse of computer software in engineering design. Quite often I had discussions with colleagues about this worrying trend and was delighted when I saw that someone on the other side of the globe has actually started a campaign on this topic.
In Australia, there is no organisation such as Stoomwezen, so we are even more exposed to the syndrome of "smooth talking colleagues", "least trouble equals good performance" and "managers who make profit their only objective". It has all indeed contributed to the decline in quality and safety of designs.
Not long ago however we did have a body called D.O.L. (Department of Labour) which had a mandate at least on paper, to perform verification of piping stress analysis. Unfortunately this function has been taken away from them and piping stress analysis has become a sole responsibility of clients and consequently engineering design and consulting firms. Many companies such as ours in order to protect themselves have developed comprehensive piping stress analysis procedures and guidelines. The verification is occasionally subcontracted to outside companies but most of the time, for obvious cost reasons performed within the company by an engineer not directly involved on the project.
In spite of the fact that all this satisfies and probably exceeds the requirements of Australian code and ISO 9001, it still is not enough to guarantee that stress reports are complete or correct. In my opinion, no administrative measure will be able to guarantee this because as you pointed out, no person is the same and there are various approaches in solving similar problems. For the same reason, much is always going to be dependent on the experience, knowledge and other qualities of an individual stress analyst.
I believe that it is an excellent idea to form a database of graded experienced stress engineers and would be more than happy to provide you with my CV should you be interested.
This even more so because I have been forced for family reasons to seek an alternative position in Western Europe at the beginning of next year.
My expertise is in piping stress analysis and would be best suited for companies that employ CAESAR II, CADWorx, PDMS and FE/Pipe. The highlight of my latest achievements is the development of PDMS to CAESAR II transfer tool via CADWorx.
The article on this topic titled "Genesis of PDMS to CAESARII Transfer Tool" has been published in COADE Mechanical Engineering News, Volume 25, June 1998.
I believe you will find my background and experience engaging and look forward to hearing from you soon.
Yours sincerely,
Misa Jocic