38008 is a Level IV Special work element.
Understand the theory of operation of flame detectors of the infrared and ultraviolet principle of operation. Know the proper and improper application of flame detectors, the way each type of flame detector responds to a fire, and the methods used by testing laboratories to determine the suitability of a flame detector for listing. (NFPA 72, Fire Protection Handbook)
Fire Protection Handbook
NICET TEST PREPARATION HANDBOOKS are now available for this element and for every element in level 1 through level 4.