The CSR is a formatted Risk Assessment and the template and guidance is available in the ECHA guidance. Part A includes making the declaration that you have communicated risk management measures to your customer.
EUSES is a complex bit of software that will hopefully be replaced / improved and incorporated into a new CSA tool linked to IUCLID 5 (this is promised late 2009). However, running the model and not understanding the science is dangerous and the science behind the models must be understood.
The conclusions to the CSR are numerical ‘risk characterisation ratios’ (RCR).