Plant Operator Selection System Test POSS: Reading Comprehension 2 — Questions and Answers
Question 1: Passage: 'The control room operator must log all pressure readings every 30 minutes during normal operations. If a reading exceeds the high-pressure threshold of 150 PSI, the operator must immediately notify the shift supervisor and document the anomaly in the event log.' According to the passage, when must the operator notify the shift supervisor?
- Every 30 minutes regardless of readings
- When a pressure reading exceeds 150 PSI (Correct answer)
- At the end of every shift
- Only if pressure drops below normal levels
Correct answer: When a pressure reading exceeds 150 PSI
The passage states the supervisor must be notified immediately when a reading exceeds the high-pressure threshold of 150 PSI.
Question 2: Passage: 'Lockout/tagout procedures require that all energy sources be isolated before maintenance begins. Workers must apply their personal lock to the energy isolation device and retain the key throughout the duration of the task. No worker may remove another worker's lock.' What does a worker do with their key during the task?
- Give it to the shift supervisor for safekeeping
- Store it in the equipment control panel
- Retain it for the entire duration of the task (Correct answer)
- Hand it to the next worker taking over
Correct answer: Retain it for the entire duration of the task
The passage explicitly states workers must retain their key throughout the duration of the task.
Question 3: Passage: 'Cooling water flow must be maintained at a minimum of 200 gallons per minute to prevent equipment overheating. Flow rates between 200 and 250 GPM are considered normal. Rates above 250 GPM indicate a possible valve malfunction and should be investigated.' A flow rate of 230 GPM is best described as:
- Below minimum and requires emergency action
- Within the normal operating range (Correct answer)
- Above normal and indicates valve malfunction
- At the threshold and requires monitoring
Correct answer: Within the normal operating range
The passage defines normal flow as between 200 and 250 GPM, and 230 GPM falls within that range.
Question 4: Passage: 'Personal protective equipment (PPE) requirements vary by work zone. Zone A requires safety glasses and hard hat. Zone B requires all Zone A equipment plus chemical-resistant gloves. Zone C requires all Zone B equipment plus a face shield and flame-resistant clothing.' Which PPE is required in ALL three zones?
- Chemical-resistant gloves and face shield
- Safety glasses and hard hat only (Correct answer)
- Flame-resistant clothing and hard hat
- Face shield and safety glasses
Correct answer: Safety glasses and hard hat only
Safety glasses and hard hat are required in Zone A, and all higher zones include Zone A requirements.
Question 5: Passage: 'The emergency shutdown sequence must be completed in no more than 90 seconds. Step 1 takes approximately 20 seconds, Step 2 takes 35 seconds, and Step 3 takes 25 seconds. Any delays beyond the allotted time must be recorded in the incident report.' What is the total time for Steps 1 through 3?
- 70 seconds
- 80 seconds (Correct answer)
- 90 seconds
- 100 seconds
Correct answer: 80 seconds
Adding the three steps: 20 + 35 + 25 = 80 seconds total.
Question 6: Passage: 'Operators are prohibited from leaving the control panel unattended for more than five minutes unless a qualified relief operator is present. Violations of this policy must be reported to the plant manager within one hour of occurrence.' What is the maximum time an operator may leave the panel unattended without a relief operator?
- One hour
- Ten minutes
- Five minutes (Correct answer)
- No time at all is allowed
Correct answer: Five minutes
The passage states operators cannot leave the panel unattended for more than five minutes without a qualified relief operator.
Question 7: Passage: 'All chemical spills must be contained immediately using the spill kit located at each workstation. Spills larger than one gallon must also be reported to the environmental compliance team. Spills of any size involving hazardous materials require an immediate evacuation of the affected area.' A two-gallon spill of a non-hazardous chemical requires which actions?
- Contain only; no reporting is needed for non-hazardous material
- Contain and report to environmental compliance team (Correct answer)
- Evacuate the area and contain the spill
- Report to the plant manager and await instructions
Correct answer: Contain and report to environmental compliance team
A two-gallon spill exceeds one gallon so it must be contained and reported to environmental compliance, but evacuation is only required for hazardous materials.
Plant Operator Selection System Test POSS: Reading Comprehension 2
Passage: 'The control room operator must log all pressure readings every 30 minutes during normal operations.
If a reading exceeds the high-pressure threshold of 150 PSI, the operator must immediately notify the shift supervisor and document the anomaly in the event log.' According to the passage, when must the operator notify the shift supervisor?