As risk register is a tool in the form or spread sheet, application or database that you can use during risk assessments for risk identification. Â It allows the person conducting the risk assessment to log the threat, asset and impact and give some idea of the probability of the threat. Â It is used in DIARMF, DIACAP, project management and other risk management processes to help decision makers.
Its also known as a risk log.
Here is a risk register template I got from British Colombia gov site http://www.gov.bc.ca/fin/):
Here is another risk register template from the Israel Institute of Technology(webcourse.cs.technion.ac.il):