During lockout/tagout procedures, which of the following steps must occur FIRST?
Correct Answer
C) Notify affected employees
The first step in LOTO procedures is to notify all affected employees of the impending lockout. This ensures worker safety before any equipment shutdown or energy isolation begins.
Why This Is the Correct Answer
OSHA 29 CFR 1910.147 (and by reference 1926.417 for construction) requires that the first step of any LOTO procedure is to notify all affected employees that a lockout/tagout is about to be performed and why. This ensures workers are aware before any equipment is shut down or isolated, preventing accidental startup attempts or interference during the process.
Why the Other Options Are Wrong
Option A: Shut down the equipment
Shutting down the equipment is Step 2 in the OSHA LOTO sequence — it comes after affected employees have been notified. Beginning shutdown without notification risks workers being unaware of the procedure and possibly restarting equipment unexpectedly.
Option B: Apply lockout devices
Applying lockout devices is Step 4 in the sequence (after shutdown, isolation of energy sources, and then applying devices). It cannot be the first step because the energy hasn't yet been isolated.
Option D: Test the effectiveness of isolation
Testing the effectiveness of isolation (verifying zero energy state) is the final verification step — it occurs after lockout devices are applied and stored energy is released. It is one of the last steps, not the first.
Memory Technique
Remember the LOTO sequence with 'NSIDE': Notify → Shut down → Isolate → Device (apply lockout) → Energy release → verify. N is first — Notify affected employees.
More NASCLA Questions
Which AIA document contains the general conditions that govern the rights and responsibilities of all parties in a construction contract?
A construction company has direct labor costs of $85,000, direct materials of $120,000, and overhead costs of $45,000 for a project. What is the total job cost?
What is the primary purpose of job cost accounting in construction?
A construction company has current assets of $350,000 and current liabilities of $280,000. What is the company's working capital?
In CSI MasterFormat, which division covers earthwork and site preparation?
In a mechanical drawing, what does 'CFM' typically measure?
In CSI MasterFormat Division 08, which of the following would typically be included?
On a mechanical plan, what does the symbol 'RTU' typically indicate?
What is the minimum preheat temperature for welding ASTM A992 steel when the ambient temperature is 15°F?
A general contractor's balance sheet shows total assets of $850,000, current liabilities of $320,000, and long-term debt of $180,000. What is the company's equity?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass