Free Trial Version of Modern Pipe Stress Analysis Software PASS/START-PROF

The PASS/START-PROF is a pipe stress analysis software that has a long history since 1965, see update history. It is industry standard in several countries for power, process, oil and gas pipelines, and district heating networks, used by 3000+ companies.

The translation into English was carried out only recently, and we are new to the international market. So we invite all engineers to get acquainted with PASS/START-PROF.

To learn what is PASS/START-PROF pipe stress analysis software and it’s great capabilities, please visit our resource center. You will find a webinar recordings, read articles, download presentations.

To try to work with the program yourself, you can download the fully functional 30-day (one month) trial version from!

PASS/START-PROF Installation Steps

A trial version of the START-PROF software can be downloaded from

  • Step 1: Open in your browser and download PASS/START-PROF Trial by clicking the following button:
  • Step 2: Install PASS/START-PROF Trial. Please read the Quick Start Guide to see how to do it. Run PASS/START-PROF. Start > Programs > START-PROF > Start-Prof
  • Step 3: Enter email, click the “…” button. Receive the email from PASS LMS and click the link inside the e-mail. Copy the confirmation code and paste it in in registration card program and press OK

Troubleshooting Steps

In case of any problem you can contact us using or using online support request form

Some of the typical problems with solution are described below.

1. Error message #60 “SERVER_PROBABLY_NOT_UP”

It means that START-PROF can’t reach the server.

Possible reasons and solutions of Error #60:

  • Windows Firewall or corporate firewall or internet provider firewall blocks incoming or outgoing traffic via UDP/6001. Change firewall settings to allow all traffic through UDP/6001
  • Use mobile internet from your cell phone using the wi-fi hot spot. It may help to overcome the proxy and firewall that block the UDP/6001 traffic
  • Try to run PASS/START-PROF Trial from the different place (home, work, etc.). Sometimes it may help

2. Error “Your IP is already registered”

The reasons for this error may be:

  • You have registered with several e-mail addresses. This will not work. Please use the only e-mail address that you registered the first time
  • Some of your colleagues in the office already registered on and they have the same external IP address as your machine does. This is a common situation. You need to find who of your colleagues did it, and ask him to enter the private account using his e-mail. Only that e-mail will work!

4. For any other problems that are not described above

Please contact the technical support team using or using online form. Don’t forget to add screenshots of your problems along with a detailed explanation. Our technical team will check it and answer you on how to fix it.

What to do after installation?

Once the installation is finished you can open the example models and review analysis results as shown below

Follow the video for creating any simple piping model:

Webinar recording:

  • 00:00 Intro
  • 14:13 How to model the vessel nozzle
  • 16:00 How to model the nozzle flexibility using WRC 297
  • 21:02 What is the local and global flexibility
  • 23:00 How to reduce the loads on equipment
  • 35:17 How to model the nozzle flexibility using FEA
  • 38:47 How to check the nozzle stress using WRC 531/297, FEA
  • 41:35 How to model the pump, compressor, turbine
  • 50:30 How to check the loads on the pump, compressor, turbine
  • 51:12 How to consider the more accurate SIF and k-factors according to ASME B31J
  • 53:00 Smart tee model according to ASME B31J
  • 01:00:50 How to model the tank nozzle: settlement, bulging effect, thermal expansion, flexibility
  • 01:03:53 How to check the loads on the tank nozzle using API 650, STO and FEA
  • 01:07:45 How to show working only one pump in the same time
    01:09:52 How to take into account the various operating modes with different P, T, etc.
  • 01:16:23 Why pipe never returns to installation state and friction forces are not zero
  • 01:17:50 Why stress range should be calculated from hot to cold state instead of installation state
  • 01:20:45 How to avoid zero intermediate anchor loads
  • 01:25:28 How to model the buried piping
  • 01:41:25 How to analyze piping for the water hammer loads
  • 01:47:30 How to add the seismic loads

You can refer “How To” training video series for beginners by clicking here (20 videos):

Or you can create your own simple model. It will not take more than 5-10 minutes from your busy schedule. Watch this tutorial video (from 02:45) for creating the simple U-shaped loop model and thereafter analyzing it.

Also, you can create an underground or buried piping model (underground piping). It will take about 5-10 minutes. Please watch this tutorial video (from 07:25):

Create an HDPE piping model (PE100). It will take about 5-10 minutes. Please refer to this tutorial video:

Also, Create the FRP piping model (Wavistrong 55). It will take about 5-10 minutes. Please watch this tutorial video for help:

If you already have CAESAR II or Autopipe model, you can open it with START-PROF. Autopipe mode should be exported into CII neutral format file. Also, you can open your Caesar II model. Please read this manual (opens in a new tab).

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Alex Matveev

Alex Matveev is one of the authors of pipe stress analysis codes GOST 32388-2013 Process Piping, and GOST 55596-2013 District Heating Networks. He is also one of the developers of PASS/Start-Prof software, which is developed since 1965 and used in 95% of process, power, district heating, gas and oil transportation design companies in Russia and CIS countries; it is industry standard in that region. He is the head of the PASS/START-PROF pipe stress analysis software development team. Also, He offers technical support and training for users of their software that number already 3000+, developing since 1965, industry standard in several countries for 50+ years, translated into English in 2017, come out from their domestic market, and started sales for the international market since 2018.

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