s-risk's blog

S-Risk 1.0.11

Released on September 8th, 2014.

List of changes in this release

S-Risk 1.0.11 is a smaller release that fixes a few specific issues:

  • configuration changes to fix the "blank pages" problem that sometimes occurs on S-Risk login;
  • adjustments for minor report issues;
  • groundwater concentration is now also reported in Conceptual Site model report section;
  • adjusted the account expiration email to be more informative and describe the correct procedure.

S-Risk offline for 1.0.11 update

Coming Monday, September 8th, we will be updating S-Risk to version 1.0.11. Server downtime can be expected between 8 and 9h30, please take this in to account when planning simulation work.

S-Risk returning blank pages?

Lately, we have had some reports of S-Risk returning blank pages when trying to log in, rendering it inaccessible. We have made a number of adjustments to our firewall and session settings in order to fix the problem. If the problem should reoccur, please let us know at info@s-risk.be.

We have worked out a workaround solution to access S-Risk, in case of this problem reoccurring:

  • Go to https://www.s-risk.be/simulator/login.jsp. On this page, you will be able to enter your login details as normal.
  • After logging in, you will be redirected to a faulty page, "sriskClient.nocache.js" instead of the actual S-Risk platform.
  • Now, go to https://www.s-risk.be/simulator/Srisk.jsp (important: note the uppercase "S" in "Srisk.jsp"). This page will show the S-Risk platform, allowing you to continue your simulation work.

Helpdesk availability in summer

The S-Risk helpdesk will not be available between July 28 and August 24. You can still send us your questions and remarks, we will handle them as soon as possible afterwards.

Inhoudelijke ondersteuning tijdens paasvakantie

Tijdens de paasvakantie zal de ondersteuning voor inhoudelijke S-Risk vragen, die via de helpdesk binnenkomen, beperkt zijn. We helpen u zo goed als mogelijk verder, maar mogelijks zullen sommige vragen met vertraging behandeld worden. Wij hopen te kunnen rekenen op uw begrip.

S-Risk updated to 1.0.10

S-Risk has been updated to version 1.0.10. Please pay attention to the release notes for this release, since it applies changes in parameter values for certain parameters important to volatilization to indoor air.

For an overview of the changes in this release, see our Release Notes page.

S-Risk offline for 1.0.10 update

Tomorrow Wednesday, March 19th, we will be updating S-Risk to version 1.0.10. Server downtime can be expected between 8 and 9h30, please take this in to account when planning simulation work.

S-Risk 1.0.10

Released on March 19th, 2014.

List of changes in this release

S-Risk 1.0.10 introduces a number of changes parameter values influencing the prediction of concentrations in indoor air following volatilization from soil or groundwater. These changes allow S-Risk to better cope with known overestimations by the Volasoil model for certain compounds.
These changes are introduced after discussion with and in close cooperation with OVAM and parties directly affected by the volatilization model issues.

It is important for the user to be aware of these changes, as they can have an impact on future results and simulations.

→ Changes in parameter values for volatilization to indoor air

The bufferspace is the minimum distance between contamination and building floor that is considered when calculating volatilization of a compound from soil/groundwater to the indoor environment. This parameter is not accessible in the S-Risk interface, but is used in the calculations (see the Technical Guidance Document on volatilization to indoor air).

  • in Application I, the value of the bufferspace is left unchanged at 0.75m
  • in Applications II and III, the value of the bufferspace is increased from 0.05m to 0.10m

For existing simulations, nothing changes and the old bufferspace of 0.05m is kept.
This value is only adjusted to 0.10m for (i) newly created simulations and (ii) whenever the application type (I, II or III) of an existing simulation is changed.

Next to the bufferspace, we have changed the default basement/crawlspace wall quality from average to good, by changing the following parameter values for new simulations:

  • kv,w = air permeability of the basement/crawlspace wall: value changes from 1×10-11 to 1×10-13
  • εv,w = air-filled porosity of the basement/crawlspace wall: value changes from 0.12 to 0.07

These new parameter values will only be applied for newly created simulations. In existing simulations, everything remains unchanged unless the user him/herself adjusts the values. 

The new values will lead to a reduction in predicted concentrations in indoor air due to vapour intrusion.

→ Changes in parameter values for the capillary zone

Values for the water-filled porosity of the capillary zone (parameter θw,cz) have been updated to more accurate values.

Soil type Old S-Risk value New 1.0.10 value
Generic 0.24 0.34
Loam 0.27 0.35
Clay 0.30 0.38
Sandy loam 0.25 0.34
Light sandy loam 0.23 0.33
Loamy sand 0.22 0.32
Heavy clay 0.37 0.43
Sand 0.22 0.33

These new parameter values will only be applied for newly created simulations. In existing simulations, everything remains unchanged unless the user him/herself adjusts the values. The new values will lead to a reduction in predicted concentrations in indoor air due to vapour intrusion from contaminated groundwater.

→ Other changes

Aside from these parameter changes, S-Risk 1.0.10 also improves on flux calculations for volatilization to indoor air, and fixes some smaller interface bugs and report issues.

  • Volatilization to indoor air calculations would ignore the contribution of deeper layers in certain situations - this is improved now
  • The list of simulations would not load when some basement parameters were missing - this is fixed now
  • Groundwater concentration configuration in Water tab and optimization setting in Concentrations tab could get inconsistent - this is fixed now
  • The report now also reports S-Risk version numbers in the footer of each page. Two version numbers are reported:
    • the S-Risk version in which the simulation was created, or of the last application switch
    • the S-Risk version with which the reported results were calculated

The "creation" version number (or version number of the last application switch) is relevant to know the default parameter values used, and is linked to, for instance, the value of the buffer space used. The "calculation" version is relevant for changes in the modelling code, like those reported here under "Other changes".

S-Risk training session

Given sufficient interest, a second S-Risk training session will be organized in 2014. More details can be found in the Events page, please express your interest via info@s-risk.be or via our Contact form.

S-Risk 1.0.9

Released on February 24th, 2014.

List of changes in this release

S-Risk 1.0.9 is a maintenance release with a number of smaller improvements, and a few adjustments to better cope with the higher server loads we've been experiencing since January. In following updates, we will continue to work on reducing the server load and speeding up simulations.

  • we now eliminated the situation where, in situations of high server load, S-Risk would show the "Calculations completed" message too early, while calculations were actually still running in the background
  • loading/saving model configurations from/to the database by the calculation servers is much faster now
  • storage of plant characteristics is more consistent now
  • a number of small report issues were fixed and applied
  • changes to prevent accounts from being unable to log out correctly

 

Pages

Subscribe to RSS - s-risk's blog