Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we covered a set of wastewater and drinking water treatment questions on the topics of Hydraulic Detention Time and the Gate Valve Operating Formula. This time you can test your knowledge about permit-required confined spaces and finished water fluoride calculations.
Wastewater Treatment Sample QuestionWhen defining confined spaces in your facility, who makes the determination whether the space is non-permit confined space or permit-required confined space?
A. OSHAB. Local health departmentC. OperatorD. Employer
Water Treatment Sample QuestionThe operator fed 10 pounds of H2SiF6 (25% commercial purity, 79.2% fluoride)
