OSHA 511 study materials
OSHA 511 study resources

OSHA 511 flashcards

OSHA 511 · Build recall with a focused review session.

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

General Duty Clause
OSH Act Section 5(a)(1): each employer must furnish a workplace free from recognized hazards that are causing or likely to cause death or serious physical harm.
OSHA inspection priority order
In order: imminent danger, fatality or catastrophe involving three or more hospitalizations, valid employee complaint or referral, programmed inspection, and follow-up inspection.
Section 11(c) retaliation complaint
An employee who alleges retaliation for exercising rights under the OSH Act must file a complaint with OSHA within 30 days of the adverse action.
State plan effectiveness requirement
A state occupational safety and health plan must be at least as effective as the federal program, and federal OSHA approves and continuously monitors it.
OSHA Form 300
The Log of Work-Related Injuries and Illnesses. Each recordable case must be entered within seven calendar days after the employer learns of it.
Form 300A posting window
The annual summary of work-related injuries and illnesses must be certified by an executive and posted from February 1 through April 30 of the following year.
8-hour and 24-hour reporting
Employers must report a work-related fatality to OSHA within 8 hours and an in-patient hospitalization, amputation, or loss of an eye within 24 hours.
Recordkeeping retention period
Retain the OSHA 300 Log, 301 Incident Reports, and 300A summaries for five years following the end of the calendar year they cover.
General industry fall protection trigger
Under 29 CFR 1910.28, employers must provide fall protection when employees are exposed to falls of four feet or more to a lower level.
Guardrail dimension requirements
The top rail must be 42 inches plus or minus 3 inches above the walking surface, with a midrail at about 21 inches and a toe board at least 3.5 inches high.
Portable ladder 4-to-1 rule
A non-self-supporting ladder is set one foot out from the wall for every four feet of working length and must extend three feet above the landing.
Fixed ladder 24-foot threshold
Fixed ladders 24 feet or longer require a ladder safety system or personal fall arrest system; new cages are prohibited and existing cages must be replaced by November 18, 2036.
Personal fall arrest anchor strength
Anchorage must support 5,000 pounds per attached employee, or be designed by a qualified person with a safety factor of at least two.
De-energizing before electrical work
Under 1910.333, live parts must be de-energized before work unless infeasible, then locked out and tested to verify the absence of voltage.
Electrical working clearance
For equipment rated 600 volts or less, a clear working space at least 30 inches wide, 36 inches deep, and 6.5 feet high is required.
Flexible cord prohibition
Flexible cords and cables may not be used as a substitute for the fixed wiring of a structure, nor run through walls, ceilings, or floors.
Qualified electrical person
A person trained and knowledgeable in the construction and operation of electrical equipment and the hazards involved, permitted to work on or near exposed energized parts.
GFCI protection purpose
A ground-fault circuit interrupter detects small current imbalances and opens the circuit, protecting people from shock; it is required on temporary wiring receptacles.
Lockout/tagout scope
29 CFR 1910.147 covers servicing and maintenance where unexpected energization, startup, or release of stored energy could injure an employee, excluding normal production operations.
Cord-and-plug lockout exception
Lockout/tagout does not apply when equipment is unplugged and the plug remains under the exclusive control of the employee performing the servicing.
Annual LOTO periodic inspection
The employer must inspect each energy control procedure at least annually, correct any deviations found, and certify the inspection with the date and employees involved.
Machine guarding rule
1910.212 requires guarding at the point of operation, ingoing nip points, rotating parts, and flying chips or sparks, with guards affixed to the machine.
Lockout verification step
After isolating energy sources and applying locks, the authorized employee must verify isolation by attempting startup or testing for voltage before beginning work.
Safety data sheet sections
OSHA requires a standardized 16-section safety data sheet; section 4 covers first aid and section 8 covers exposure controls and personal protection.
Employer PPE payment rule
Employers must pay for required PPE, except non-specialty safety-toe footwear and non-specialty prescription safety eyewear that employees may wear off the job.
Noise action level
A hearing conservation program is required at an 8-hour time-weighted average of 85 dBA; the permissible exposure limit is 90 dBA with a 5 dB exchange rate.
Respirator fit testing frequency
Fit testing is required before initial use and at least annually thereafter, after a medical evaluation, using the same make, model, style, and size.
Secondary container labeling
A portable container must be labeled with the chemical identity and hazard information unless it is filled and used immediately by the employee who dispensed it.
Permit space oxygen range
Entry testing must show oxygen between 19.5 and 23.5 percent, flammable gas or vapor below 10 percent of the lower explosive limit, and other contaminants within limits.
Powered industrial truck retraining
Operators must be trained and evaluated, with refresher training and evaluation at least every three years or after an accident, near miss, or unsafe operation.
Confined space attendant duties
The attendant remains outside, monitors entrants and space conditions, maintains an accurate count, summons rescue services, and never enters to attempt a rescue.
Fire extinguisher travel distance
Class A extinguishers must be within 75 feet of employees and Class B extinguishers within 50 feet, with monthly visual checks and annual maintenance.