ITEM TO CHECK

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PURPOSE
The ECPSSR can be used to summarize results of analyses, tests and tradeoff studies conducted on proposed engineering design changes throughout the system life cycle.
PREPARATION INSTRUCTION
Source document
The applicable issue of the documents cited herein, including their approval dates and dates of any applicable amendments and revisions, shall be as reflected in the contract.
Contents
The ECPSSR shall include the following information resulting from a review of each ECP. When it is determined that there are no hazards, a description of the analysis process and factors which allowed this conclusion shall be included.
A list, in narrative or tabular form, of all hazards associated with the ECP. This includes all new hazards as well as hazards that were previously identified and were eliminated or controlled, and are affected by this ECP (i.e. their risk has been reduced or increased.)
A risk assessment of these hazards. This shall include a pre-ECP and post-ECP assessment with severity and probability of occurrence.
The safety impact of the ECP upon the existing system.
An historical system safety summary as it relates to the ECP and reason for ECP.
An identification of any update(s) of existing hazard analyses required to incorporate the effect(s) of the engineering change if the change is authorized.