OIC Evidence Collection & Preservation 2

Question 1

When photographing a fire scene for evidence, what is the correct sequence for capturing images?

Accepted Answer

Start at the perimeter and work inward toward the origin

Answer

Investigators should photograph from the exterior perimeter inward toward the area of origin to document the overall scene before close-up details.

Question 2

Which type of container is MOST appropriate for collecting liquid accelerant samples from a fire scene?

Accepted Answer

Unlined paint cans or glass jars with airtight lids

Answer

Unlined paint cans or glass jars with airtight lids are used for liquid accelerant samples because they do not absorb or react with the evidence.

Question 3

What is the primary purpose of establishing a chain of custody for collected evidence?

Accepted Answer

To ensure evidence has not been tampered with and is admissible in court

Answer

Chain of custody documents every person who handled the evidence, ensuring its integrity and admissibility in legal proceedings.

Question 4

A fire investigator finds a suspicious burn pattern on a floor. Before sampling, what should be done first?

Accepted Answer

Photograph and document the pattern in place before disturbing it

Answer

Evidence must be photographed and documented in its original position before any collection to preserve the scene's integrity.

Question 5

Which action would MOST likely compromise the integrity of physical evidence at a fire scene?

Accepted Answer

Placing wet debris in sealed plastic bags for extended storage

Answer

Sealing wet debris in plastic bags promotes mold growth and biological contamination, potentially destroying volatile evidence.

(OIC) Oregon Inspector Certification Practice Test