10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free WSO-CSE questions are organized by exam domain, so you can see how each part of the Certified Safety Executive (WSO-CSE) blueprint is tested. Reveal the answer and explanation under each question.
Domain 1: Safety and Loss Control Science
Question 1
A blending operator opens the wrong of two adjacent, identical valves, sending material to the wrong receiver. The approved batch recipe identified the correct destination, and the operator accurately explains the routing afterward. Two earlier near misses involved different operators and the same valves. The release is contained and the line isolated. Which proposed action most effectively reduces recurrence?
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Correct answer: C - Interlock valve selection with the approved batch destination and validate the safeguard under operating conditions.
Question 2
A localized explosion in a dust collector is followed seconds later by a larger explosion across an enclosed packing hall. Investigators establish that the first pressure wave lofted combustible dust from overhead beams into the hall. Which corrective action addresses the fuel source responsible for that escalation?
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Correct answer: D - Prevent dust escape and remove combustible deposits from overhead and concealed surfaces.
Domain 2: Risk Management
Question 3
A tank's high-level alarm and automatic overfill trip use separate transmitters, controllers, and power supplies. Both transmitters, however, sense level through the same small-bore connection, which can become blocked. The risk assessment credits the alarm and trip as independent protection layers. What design change would remove this shared failure path?
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Correct answer: A - Give the trip a separate, suitably designed level-sensing connection to the tank.
Question 4
At a U.S. facility with an OSHA process-safety-management-covered process, a failed pump seal will be replaced with one from a different manufacturer. Engineering verifies that the replacement satisfies the existing design specification, including materials, pressure rating, dimensions, and performance. No process conditions or procedures will change. The maintenance manager asks whether the supplier change itself requires management of change. The defensible response is:
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Correct answer: C - Treat it as replacement in kind and complete the applicable maintenance, installation, and return-to-service checks.
Domain 3: Occupational Safety and Health
Question 5
A U.S. general-industry employee spends four hours at 95 dBA and four hours at 90 dBA during each shift. These are the employee's noise exposures before hearing-protector attenuation; there is no additional occupational noise exposure. Using federal OSHA's noise standard, how should the safety executive assess the daily exposure and required control approach?
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Correct answer: D - 150% dose; use feasible engineering or administrative controls and supplement with hearing protection as necessary.
Question 6
During maintenance preparation on a hydraulic press, authorized employees lock the electrical disconnect and isolate the hydraulic supply. The main pressure gauge reads zero, but the raised platen remains supported by fluid trapped behind a check valve. Before anyone works beneath the platen, what remains essential?
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Correct answer: A - Restrain the platen against descent with an appropriately rated mechanical support and verify the energy-control condition.
Question 7
On the first day of furnace-area work, a new employee becomes unsteady, answers simple questions incoherently, and cannot identify the supervisor. The employee is still sweating heavily. A coworker suggests a drink and a short rest because the skin is not dry. What takes priority now?
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Correct answer: B - Activate emergency medical response and begin rapid active cooling for suspected heat stroke.
Domain 4: Safety Law and Legislation (applicable country)
Question 8
An employee sustains a physician-diagnosed wrist fracture in a work-related fall. The hospital keeps the employee overnight solely for observation and diagnostic testing; there is no formal inpatient admission for care or treatment. The employer is subject to federal OSHA and must maintain injury and illness records. Which recording and reporting duties apply to this event?
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Correct answer: B - Record the fracture on the OSHA 300 Log; the observation-only stay does not require severe-event notification.
Domain 5: Professional Ethics
Question 9
The lowest qualifying bidder for a safety-monitoring contract meets every published technical requirement. Before scoring begins, the safety executive chairing the selection panel realizes that their spouse has acquired a substantial ownership interest in that bidder. No procurement rule automatically excludes a supplier because of such a relationship. How should the executive handle the bid evaluation?
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Correct answer: B - Disclose the interest, withdraw from scoring, and have an independent panel evaluate the bid.
Domain 6: Management Science
Question 10
Corporate safety repeatedly identifies the same maintenance-related hazards at six plants. Plant managers say corrective action belongs to the safety department, although only plant management can schedule maintenance and authorize operating expenditure. Corporate safety can inspect and advise but has neither authority. Where should the executive place accountability for sustained correction?
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Correct answer: C - With each plant manager, backed by clear authority and resources, while corporate safety provides advice and assurance.
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The full bank has 1,020 more WSO-CSE questions with explanations.