Recent News
SNAP Version 3.1.8 Released
July 14, 2021
AptPlot 7.0.2 Updated
February 24, 2021
PyPost 3.1.0 Released
May 21, 2021

Symbolic Nuclear Analysis Package

The Symbolic Nuclear Analysis Package (SNAP) consists of a suite of integrated applications designed to simplify the process of performing engineering analysis. SNAP is built on the Common Application Framework for Engineering Analysis (CAFEAN) which provides a highly flexible framework for creating and editing input for engineering analysis codes as well as extensive functionality for submitting, monitoring, and interacting with the codes.

Download SNAP

Getting Started

A guide to downloading and installing SNAP and its prerequisite software.


Users' manuals, on-line instruction, tutorials, and other SNAP related materials.

SNAP Plug-ins

Find information about the various SNAP plug-ins available to users.

Technical Support

Technical support is available to CAMP members, NRC contractors and SNAP User's Group members.

Change Log

SNAP 3.1.8 - Released 7/14/2021:

  • An issue was resolved that could prevent Job Streams from running under Windows.

SNAP 3.1.7 - Released 7/8/2021:

  • An issue was resolved that could prevent Python Directed streams from determining the default application to use under newer Java versions when using CPython 3.*.
  • An issue was resolved that prevented new tasks in Python Directed streams from appearing in Job Status as soon as they were submitted when the stream is executing in a high performance computing environment such as Amazon Web Services (AWS) Batch.

The following issues are still under development:

  • The model editor has been updated to include a global find dialog for searching through the components in a model. This dialog may be opened from the Edit main menu, or by pressing Ctrl-f. This dialog replaces the find dialog used for searching through the components in a view.

see older releases