The HAZWOPER Standard Credit Hours: 4 Approximate reading time: 2 Hours Approximate online time: 1 Hour You Must Be Signed In To View This Program. Register Today NFPA Documents Disclaimer- NFPA and other resource editions cited within the CFITrainer.Net site were current as of the release of the respective modules. The field of fire investigation and its guiding documents are constantly evolving and it is incumbent upon the fire investigator to remain up to date with the guidance in the current editions of the documents referenced in all modules on CFITrainer.Net, regardless of which edition was used in the writing of the module. Program Abstract This module provides introductory information on the Hazardous Waste Operations and Emergency Response (HAZWOPER) standard – 29 CFR 1910.120. The purpose of the module is to acquaint fire and explosion investigators with the basic requirements of HAZWOPER and the potential impact that HAZWOPER may have on conducting fire scene examinations involving hazardous materials or wastes.