Free BCSP ASP Exam Flashcards

Rate = (Number of recordable cases x 200,000) / Total hours worked. The 200,000 represents 100 full-time-equivalent employees working 2,000 hours per year, so the rate reads as cases per 100 workers per year. The same formula and base produce TRIR, DART, and LTC rates by swapping which cases are counted.

TRIR counts all OSHA-recordable cases. DART counts only cases involving Days Away, Restricted work, or job Transfer. Both use the (cases x 200,000) / hours formula, so DART is always less than or equal to TRIR for the same period because DART is a subset of recordables.

T = 8 / 2^((L-90)/5), where L is the sound level in dBA. OSHA's PEL is 90 dBA for 8 hours with a 5 dB exchange rate, so allowed time halves for every 5 dB increase: 95 dBA gives 4 hours, 100 dBA gives 2 hours, 105 dBA gives 1 hour.

Dose = C1/T1 + C2/T2 + ... where C is actual time at a level and T is the permitted time for that level. A total exceeding 1.0 (100%) exceeds the OSHA PEL. Partial doses are summed across all exposure segments in the shift before judging compliance.

TWA = 16.61 x log10(Dose/100) + 90, where Dose is expressed as a percent. A 100% dose equals exactly 90 dBA TWA. Doses below 100% yield a TWA under 90 dBA; doses above 100% yield a TWA over the PEL.

Decibels are logarithmic and cannot be added arithmetically. Doubling sound energy adds 3 dB. Two equal 90 dBA sources combine to about 93 dBA, not 180. For two unequal sources, add a correction (0 to 3 dB) based on the difference between them.

Q = G / (Ca - Co), where Q is required airflow, G is the contaminant generation rate, Ca is the acceptable concentration, and Co is the makeup-air concentration (often zero). Concentrations in ppm convert to a fraction by dividing by 1,000,000, so small acceptable limits demand very large airflow.

V = pi x r^2 x h. Always convert diameter to radius first (radius = diameter / 2). To convert cubic feet to U.S. gallons, multiply by 7.48. Tank volume math supports secondary containment sizing, fire-water supply, and spill planning.

Per-leg tension rises as the sling angle to horizontal decreases: Tension = (Load / number of legs) / sin(angle from horizontal). Lower angles dramatically increase leg tension, which is why a 30-degree sling angle is far more dangerous than a 60-degree angle for the same load.

Activity after n half-lives = initial / 2^n, where n = elapsed time / half-life. Three half-lives reduce a source to one-eighth of its starting activity. This drives shielding, storage duration, and exposure-rate decay planning.

Intensity is inversely proportional to the square of the distance from a point source: I2 = I1 x (d1/d2)^2. Doubling distance cuts exposure to one-fourth. Distance is the most powerful of the time-distance-shielding controls because of this squared relationship.

Ohm's Law: V = I x R, so current I = V / R. Power: P = V x I, which also equals I^2 x R. These relationships size overcurrent protection, predict shock current through body resistance, and underpin arc-flash energy estimates.

PEL is the OSHA legally enforceable limit. TLV is the ACGIH recommended guideline (not law). REL is the NIOSH recommended limit. When limits differ, the OSHA PEL is mandatory, but a lower TLV or REL is often used as a protective best practice.

TWA is the average exposure over 8 hours. STEL is a 15-minute maximum average that must not be exceeded. Ceiling must never be exceeded at any instant. IDLH is the level posing immediate threat to life or causing irreversible harm or escape impairment.

Percent of PEL = (measured concentration / PEL) x 100. A result over 100% is a non-compliant overexposure. The action level (often 50% of the PEL) triggers monitoring, training, or medical surveillance even before the PEL is reached.

Hazard ratio = measured concentration / exposure limit. The selected respirator's Assigned Protection Factor (APF) must exceed the hazard ratio. A half-mask APR has APF 10; a full-face APR has APF 50; a powered air-purifying or supplied-air hood ranges higher.

The four routes are inhalation, absorption (skin/eye), ingestion, and injection. Inhalation is the most common occupational route. Lead is notable for significant ingestion exposure from hand-to-mouth contact, which is why hygiene controls matter.

Acute exposure is a short, often high-concentration event producing rapid effects. Chronic exposure is repeated low-level contact over a long period producing delayed effects such as cancer or organ damage. The same agent can cause both depending on dose and duration.

Elimination, Substitution, Engineering controls, Administrative controls, then PPE. The top tiers remove or reduce the hazard at the source and do not depend on worker behavior, so they are inherently more reliable than administrative controls or PPE.

PPE does not remove the hazard; it only places a barrier between the worker and the hazard, and it fails if it is the wrong type, worn incorrectly, damaged, or not worn. It is used when higher controls are infeasible or as interim protection while better controls are implemented.

Risk combines how bad an outcome could be with how likely it is. A risk matrix plots severity against probability to assign a risk level for ranking and prioritizing mitigation. Two hazards with the same risk score may need different controls based on which factor dominates.

RPN = Severity x Occurrence x Detection, each typically rated 1-10, giving a 1-1000 range. Higher RPN means higher priority for corrective action. A low detection score (easy to detect) lowers RPN; a hard-to-detect failure raises it even if severity is moderate.

Fault tree analysis is top-down and deductive, starting from an undesired top event. Under an AND gate, multiply input probabilities (all must occur). Under an OR gate, the events are combined so any one can cause the output. AND gates produce much lower combined probabilities.

For independent events, P(A and B) = P(A) x P(B). For mutually exclusive 'either' events, P(A or B) = P(A) + P(B). The multiplication rule is exactly how an AND gate combines failure probabilities in a fault tree.

A JHA breaks a job into steps, identifies hazards in each step, and defines controls. Prioritize which jobs to analyze first by injury history, severity potential, frequency of the task, new or changed processes, and near-miss patterns rather than analyzing in arbitrary order.

Lagging indicators measure outcomes after harm occurs (TRIR, DART, fatalities). Leading indicators measure proactive activity that predicts performance (audits completed, training delivered, near-misses reported, corrective actions closed). A strong program tracks both, not lagging alone.

ISO 45001 is the international occupational health and safety management system standard built on the Plan-Do-Check-Act cycle. ANSI/ASSP Z10 is the U.S. consensus equivalent. Both require leadership commitment, worker participation, hazard identification, and continual improvement.

MOC formally evaluates the safety impact of changes to equipment, processes, chemicals, or personnel before they are implemented. It prevents unrecognized hazards from being introduced and is a core Process Safety Management element; like-for-like replacement is typically exempt.

OSHA 29 CFR 1910.147 controls hazardous energy during servicing and maintenance. Lockout (a lock) is the primary, more reliable method; tagout (a tag) is a warning only and is less protective. Each authorized worker applies their own lock so no one else can re-energize the equipment.

A confined space is large enough to enter, has limited entry/exit, and is not designed for continuous occupancy. It becomes permit-required if it has a hazardous atmosphere, engulfment potential, an inward-converging or entrapment configuration, or any other recognized serious hazard.

OSHA 1926 Subpart P requires a protective system (sloping, shoring, or shielding) for trenches 5 feet or deeper unless made entirely in stable rock. Trenches 20 feet or deeper require a system designed by a registered professional engineer. A competent person inspects before entry.

General industry (1910) generally requires fall protection at 4 feet, construction (1926) at 6 feet, and scaffolds at 10 feet. Knowing the applicable standard determines the trigger height, since the same elevation can be compliant or non-compliant depending on the industry.

Required clearance = free-fall distance + deceleration distance + harness/D-ring stretch + worker height below the D-ring + a safety margin. Underestimating any component risks the worker contacting a lower level even though the system 'arrested' the fall.

OSHA limits the maximum arresting force on a worker to 1,800 lbf when a body harness is used. Shock-absorbing lanyards and self-retracting lifelines are designed to keep peak force at or below this limit so the arrest itself does not cause injury.

Fire needs heat, fuel, an oxidizer (oxygen), and an uninhibited chemical chain reaction. Removing any one side stops combustion. The fourth element (chain reaction) is why clean-agent and dry-chemical extinguishers work by chemically interrupting the reaction, not just by cooling.

Class A: ordinary combustibles (wood, paper). Class B: flammable liquids and gases. Class C: energized electrical equipment. Class D: combustible metals. Class K: cooking oils and fats. The class drives extinguishing-agent selection; using the wrong agent can worsen the fire.

A vapor burns only between its Lower Explosive Limit and Upper Explosive Limit. Below the LEL the mixture is too lean; above the UEL it is too rich. Combustible-gas detector alarms are set as a percentage of the LEL (commonly 10%) to act well before the flammable range.

Flash point is the lowest temperature at which a liquid gives off enough vapor to ignite with an external ignition source. Autoignition temperature is the temperature at which it ignites spontaneously without any spark or flame. Lower flash point means greater fire hazard.

A dust explosion needs the fire tetrahedron elements plus dispersion of the dust cloud and confinement. Removing dispersion or confinement, or controlling dust accumulation through housekeeping, breaks the pentagon. Secondary explosions from disturbed settled dust are often the most destructive.

Hot work requires a permit, removal or shielding of combustibles, and a fire watch during the work and for a continued monitoring period afterward (commonly at least 30 minutes) because smoldering ignition can develop after the torch or arc is shut off.

RWL = LC x HM x VM x DM x AM x FM x CM, where LC is the 51 lb load constant and each multiplier is 0-1. Lifting Index = actual load weight / RWL. An LI greater than 1.0 indicates increasing musculoskeletal injury risk for that lift.

In the NIOSH equation the Horizontal Multiplier shrinks rapidly as the load moves away from the body, sharply lowering the Recommended Weight Limit. Keeping a load close to the body is the single most effective work-practice control for manual lifting.

Force, repetition, awkward or static posture, contact stress, vibration, and duration. Risk multiplies when several factors combine, such as forceful repetitive exertions in an awkward posture. REBA and RULA are common assessment tools for whole-body and upper-limb risk.

WBGT integrates air temperature, humidity (natural wet-bulb), radiant heat (globe), and air movement into one heat-stress index. Outdoor WBGT = 0.7 x natural wet-bulb + 0.2 x globe + 0.1 x dry-bulb. Higher WBGT requires shorter work and longer rest cycles.

ISO 14001 is the environmental management system standard; ISO 45001 is the occupational health and safety management system standard. Both use the Plan-Do-Check-Act framework and the high-level structure, so an organization can integrate them, but their objects of protection differ.

Preferred order: source reduction (prevention) first, then reuse, then recycling, then treatment, with disposal as the last resort. This conservation hierarchy reduces both environmental impact and long-term cost and parallels the prevention-first logic of the hierarchy of controls.

Environmental, Social, and Governance reporting incorporates worker safety performance, environmental impact, and ethical governance into organizational disclosures. Safety professionals supply leading and lagging metrics that feed the 'S' (and parts of the 'E') in ESG.

Adults learn best when training is relevant to their job, builds on experience, is problem-centered, and is immediately applicable. Effective programs follow a needs analysis, set baseline competency, use varied delivery, and then evaluate both training effectiveness and knowledge retention.

A competent person can identify existing and predictable hazards and has authorization to take prompt corrective measures. A qualified person has a recognized degree, certificate, or extensive knowledge and demonstrated ability to solve the specific technical problem. The roles are not interchangeable.

Risk transfer shifts financial consequences to another party through insurance, contracts, or outsourcing; it does not eliminate the underlying hazard. Risk retention means accepting the loss internally. A safety professional must recognize scope limits and involve legal or insurance experts for transfer decisions.