Make notes on all facts that may relate to the cause of the accident. Write down any procedure used, misuse of equipment or other factors not in accordance with published work or safety policies. Write down any unsafe conditions or faulty equipment noted. If an injury or near miss occurs when machine parts or structures fail, it is essential to determine what failed and why. It is important to interview witnesses at the scene immediately.
Timing is important.
If the accident is serious, selecting the right time is a judgement factor. It is essential to eliminate any inconsistencies in the testimony of the injured or witnesses even if further questioning is required. When assembled, all facts should be reviewed for completeness.