This mock runs at the STSC's real pace. BCSP allows 2 hours for 100 items, which works out to 1.2 minutes a card, and the clock here uses the same rate for a shorter set (BCSP's Complete Guide to Safety Certification, as of October 2026). Notes stay hidden until you press Finish.
Close on pace, and the domain mix follows the blueprint roughly. The cards are not BCSP items, though, and the room is different: the real exam is delivered by computer at a Pearson VUE test center, closed book, with an on-screen calculator that emulates the TI-30XS (as of October 2026). The STSC test-day rules cover ID and what you may bring in.
Breaks on test day are self-scheduled, and BCSP says the exam clock keeps running through them. How long the STSC exam takes works through what that does to your pacing.
Talking point 02
Your timed run
Clear the time before you press Start, because this clock does not pause. You can skip a card and come back to it, which BCSP says you can also do on the real exam (as of October 2026).
Before you start
60 cards, 72 minutes on the clock — about 1 min 12 s a card.
No feedback until you finish. You can change an answer, flag a card and come back to it.
When time runs out the set is scored as it stands.
Afterwards you get a score for each domain and can review every card with a note on every option.
How the 60 cards split by domain
Domain
Cards
Safety Program Implementation
14
Hazard Identification and Control
17
Health Hazards and Basic Industrial Hygiene
11
Emergency Preparedness and Management
10
Leadership and Ethics
8
Card 1 of 60 · --:--
Card 1Hazards
A carpenter refuses to wear safety glasses while using a powder-actuated tool, saying they fog up. What should the supervisor do FIRST?
Answers stay hidden until you finish. The review then shows a note on every option.
AA written warning while the carpenter keeps working leaves the eyes exposed to fastener and fragment strikes.
BContinuing without eye protection while anti-fog glasses are on order leaves the hazard in place.
CCorrect: Powder-actuated tools can throw fragments, so work stops until the worker has eye protection that fits and solves the fogging problem.
DA reminder with a check at lunch allows hours of unprotected exposure.
Card 2Health
An ironworker will torch-cut steel beams coated with old red paint during demolition of a 1960s building. What should the supervisor do FIRST?
Answers stay hidden until you finish. The review then shows a note on every option.
AA dust mask is not adequate respiratory protection against lead fume from torch cutting.
BCorrect: Torch cutting on coatings of that era is a lead trigger task, so exposure is presumed high and protections stay in place until testing shows otherwise.
COpen-air torch cutting still puts the cutter in the fume plume and can exceed lead exposure limits.
DWetting can suppress dust from scraping, but it does not stop lead fume generated by the torch.
Card 3Emergency
A laborer splashes hydrochloric-acid concrete cleaner on a bare forearm. Which FIRST action does the MOST to limit the severity of the burn?
Answers stay hidden until you finish. The review then shows a note on every option.
ANeutralizing on skin can generate heat and delays flushing, which is what limits the burn.
BOintment traps the chemical against the skin and lets the burn continue.
CCorrect: A chemical burn worsens as long as acid remains on the skin, so immediate, prolonged flushing with water limits severity most.
DWiping can smear the acid over more skin, and watching for blisters wastes the time that flushing would save.
Card 4Ethics
The day after a scaffold platform collapses and injures a worker, the project manager tells the supervisor to fire the carpenter who erected it. What should the supervisor do?
Answers stay hidden until you finish. The review then shows a note on every option.
AFiring before the cause is known can punish the wrong person and hide system failures.
BA past record says nothing about what caused this collapse.
CCorrect: Discipline should follow verified findings, and scaffold collapses usually involve several factors that the investigation must sort out first.
DSuspending without pay is still discipline imposed before the facts are established.
Card 5Hazards
During an inspection, a supervisor finds a running portable air compressor with its belt guard removed. What is the PRIMARY hazard to nearby workers?
Answers stay hidden until you finish. The review then shows a note on every option.
ACorrect: An exposed belt and pulley form an in-running nip point that can catch clothing, gloves, or fingers and pull them in.
BA thrown belt is possible but far less likely than contact with the running nip point.
CRemoving a belt guard does not expose the electrical parts of the compressor.
DFriction heat is a minor concern compared with entanglement in the moving drive.
Card 6Program
Over six months a site recorded five hand lacerations, each closed out as 'worker careless, retrained.' What is the BEST next step for the supervisor?
Answers stay hidden until you finish. The review then shows a note on every option.
ACorrect: Repeated similar injuries signal a system problem, so the cases are analyzed together for common tasks, tools, or conditions.
BDiscipline discourages reporting and does not change the conditions that produced the injuries.
CGloves for only the injured workers treat past victims, not the shared hazard others still face.
DRetraining again repeats a fix that has already failed five times.
Card 7Health
What does a ceiling (C) exposure limit on an SDS mean?
Answers stay hidden until you finish. The review then shows a note on every option.
AA 15-minute average describes the short-term exposure limit, not the ceiling.
BCorrect: A ceiling limit is a value that must never be exceeded at any point during the workday.
CAn 8-hour average describes the time-weighted average limit.
DThe 'four times a shift' idea comes from ACGIH guidance on short-term excursions and never permits exceeding a ceiling.
Card 8Emergency
A tanker overturns on the highway next to a site, and an ammonia cloud is drifting across the site's only exit road. What is the BEST protective action for the crews?
Answers stay hidden until you finish. The review then shows a note on every option.
ACorrect: When the only escape route passes through the plume, sheltering in closed spaces with ventilation off limits gas entry until the cloud passes.
BDust masks give no protection against a toxic gas such as ammonia.
CDriving out on the exit road moves workers straight through the ammonia cloud.
DAn open assembly area leaves workers exposed if the cloud drifts over them.
Card 9Ethics
A worker with a hearing impairment tells the supervisor that they have been excluded from certain tasks even though reasonable accommodations could allow safe performance. What should the supervisor do?
Answers stay hidden until you finish. The review then shows a note on every option.
ADeclaring hearing essential for all tasks without looking at accommodations can be unjustified exclusion based on disability.
BRequiring a formal complaint first delays a concern the supervisor can already act on.
CRestricting assignments pending a doctor's note continues the exclusion without job-related criteria.
DCorrect: A credible concern about disability-based exclusion is taken seriously and raised with the facts so accommodations can be assessed properly.
Card 10Program
A new rigger notices a damaged synthetic sling in the rigging box and is unsure whom to tell. Under a sound escalation procedure, whom should the rigger notify FIRST?
Answers stay hidden until you finish. The review then shows a note on every option.
AContacting OSHA is a worker's right, but it skips the person who can remove the sling right now.
BThe manufacturer may help later with a defect, but it cannot take the sling out of service on site.
CThe owner's representative is not the first line of response for a rigging hazard.
DCorrect: The immediate supervisor can remove the sling from service promptly and push the issue up the chain if needed.
Card 0Ethics
A supervisor with competent-person training is asked to approve the sloping plan for a 24-foot-deep excavation because the project engineer is unavailable. What is the MOST appropriate response?
Answers stay hidden until you finish. The review then shows a note on every option.
ACorrect: protective systems for excavations deeper than 20 feet must be designed by a registered professional engineer, and the Code limits work to one's qualifications.
BInterim approval still puts workers in a 24-foot excavation under a design no competent person is allowed to make.
CThe 1½:1 Type C slope comes from tables that only cover excavations 20 feet deep or less.
DTwo competent persons together still cannot design a system for this depth; only a registered engineer can.
Card 0Emergency
Wind gusts above the tower crane manufacturer's limit are forecast for this afternoon, and loose decking bundles are staged on an upper floor. What should the supervisor do BEFORE the winds arrive?
Answers stay hidden until you finish. The review then shows a note on every option.
ACorrect: The weather plan acts on the forecast, stopping lifts within the manufacturer's wind limits and securing materials that wind could turn into projectiles.
BTying off keeps workers on the deck but does not protect them from wind-blown materials.
CLight loads with large surfaces catch more wind, not less.
DGusts can exceed the measured reading at any moment, so waiting for the limit leaves no margin.
Card 0Ethics
After a worker reports a safety violation, the project manager suggests reassigning the worker to a less desirable task as a lesson. What is the supervisor's most appropriate response?
Answers stay hidden until you finish. The review then shows a note on every option.
ATransferring the worker to avoid complaints is still adverse action because of the report.
BWritten insistence from the project manager does not make retaliation acceptable.
CCorrect: Reassigning a worker as punishment for a safety report is retaliation, so the supervisor refuses and protects the worker.
DMaking the worker choose between a bad task and withdrawing the report is pressure to suppress a safety concern.
Your mock, scored
Score by domain
Domain
Right
Talking point 03
The weights behind your score by domain
Safety Program Implementation23.9%
Hazard Identification and Control28.5%
Health Hazards and Basic Industrial Hygiene17.8%
Emergency Preparedness and Management16.6%
Leadership and Ethics13.2%
STSC7 Examination Blueprint, V.2020.03.27, checked Oct 12, 2026. A weak row in a heavy domain costs more items on the real exam.
Talking point 04
After you press Finish
Read the domain rows before the total
A low row in Hazard Identification and Control (28.5%) matters more than the same row in Leadership and Ethics (13.2%), because the heavier domain carries more items.
Review the lucky guesses
Open the review and read the notes on any card you were unsure of. A guess that landed and an answer you knew look the same on the score.
Schedule the weak domain first
The STSC study plan spreads the domains over 4, 8 or 12 weeks. Put the weakest one at the front, drill it in the untimed practice test, and run the mock again a few days later.