NEBOSH PSM Questions with Verified Answers
20-55 degrees Ans✓✓✓-What is the temperature range for legionella growth?
3-5% Ans✓✓✓-What percentage of water remains in saturated steam?
37 degrees Ans✓✓✓-What is the ideal temperature for legionella growth?
50V Ans✓✓✓-What voltage can cause heart fibrillation?
A check that all standards have been adhered to, particularly for any Safety
Critical Elements Ans✓✓✓-What key check should the Process Hazard Analysis
used for pre-start-up safety review include?
Acronym: Failure Mode Effect Analysis Ans✓✓✓-Acronym: FMEA
Acronym: Mean Time Between Failure Ans✓✓✓-Acronym: MTBF
Acronym: Probability of failure on demand Ans✓✓✓-Acronym: PFD
Acronym: Remotely operated shutoff valve Ans✓✓✓-Acronym: ROSOV
Acronym: Safety instrumented system Ans✓✓✓-Acronym: SIS
Acronym: Safety integrity level Ans✓✓✓-Acronym: SIL
, Acronym: uninterruptible power supply Ans✓✓✓-Acronym: UPS
alarm to alert workers to the power outage Ans✓✓✓-What function additional
to providing uninterruptible power to critical equipment might a UPS have?
Amount of current; frequency; path through body; length of time Ans✓✓✓-What
4 factors does the hazard of electricity depend on?
Answer 2: Water Hammer Ans✓✓✓-What hazard is caused by steam rapidly
condensing due to being surrounding by cooler condensate, resulting in a massive
change in pressure due to loss of volume?
Answer: Mean time between failures (MTBF) Ans✓✓✓-What is the measure used
in relation to predicted failures of repairable systems?
Answer: Probability of failure on demand (PFD) Ans✓✓✓-In what terms is the
'reliability' measure of FARSI often expressed?
Answer: Process Hazard Analysis Ans✓✓✓-What should a pre-start-up safety
review be based on?
Answer: Superheated steam Ans✓✓✓-Which type of steam is invisible?
Answer: Thermal expansion Ans✓✓✓-What type of hazard is prevented by
building in flexibility or using bellows etc to allow material to expand?
20-55 degrees Ans✓✓✓-What is the temperature range for legionella growth?
3-5% Ans✓✓✓-What percentage of water remains in saturated steam?
37 degrees Ans✓✓✓-What is the ideal temperature for legionella growth?
50V Ans✓✓✓-What voltage can cause heart fibrillation?
A check that all standards have been adhered to, particularly for any Safety
Critical Elements Ans✓✓✓-What key check should the Process Hazard Analysis
used for pre-start-up safety review include?
Acronym: Failure Mode Effect Analysis Ans✓✓✓-Acronym: FMEA
Acronym: Mean Time Between Failure Ans✓✓✓-Acronym: MTBF
Acronym: Probability of failure on demand Ans✓✓✓-Acronym: PFD
Acronym: Remotely operated shutoff valve Ans✓✓✓-Acronym: ROSOV
Acronym: Safety instrumented system Ans✓✓✓-Acronym: SIS
Acronym: Safety integrity level Ans✓✓✓-Acronym: SIL
, Acronym: uninterruptible power supply Ans✓✓✓-Acronym: UPS
alarm to alert workers to the power outage Ans✓✓✓-What function additional
to providing uninterruptible power to critical equipment might a UPS have?
Amount of current; frequency; path through body; length of time Ans✓✓✓-What
4 factors does the hazard of electricity depend on?
Answer 2: Water Hammer Ans✓✓✓-What hazard is caused by steam rapidly
condensing due to being surrounding by cooler condensate, resulting in a massive
change in pressure due to loss of volume?
Answer: Mean time between failures (MTBF) Ans✓✓✓-What is the measure used
in relation to predicted failures of repairable systems?
Answer: Probability of failure on demand (PFD) Ans✓✓✓-In what terms is the
'reliability' measure of FARSI often expressed?
Answer: Process Hazard Analysis Ans✓✓✓-What should a pre-start-up safety
review be based on?
Answer: Superheated steam Ans✓✓✓-Which type of steam is invisible?
Answer: Thermal expansion Ans✓✓✓-What type of hazard is prevented by
building in flexibility or using bellows etc to allow material to expand?
