BCSP CSP flashcards

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

Inverse square law

Exposure intensity from a point source varies inversely with the square of distance; doubling distance reduces intensity to one-quarter of the original value.

Noise dose formula

D = 100 × Σ(Ci/Ti), where Ci is time at a given noise level and Ti is allowable time at that level; a dose of 100 percent equals a full permitted exposure.

Dilution ventilation equation

Q = G/(C − C0) × K, where Q is airflow, G is generation rate, C is target concentration, C0 is background concentration, and K is a unit conversion factor.

Time-weighted average exposure

TWA = Σ(Ci × Ti)/8, summing each task's concentration times its duration and dividing by an 8-hour shift to compare against the exposure limit.

Plan-Do-Check-Act

The continuous improvement cycle behind ISO 45001: establish objectives and processes (Plan), implement them (Do), monitor and measure (Check), and act on results (Act).

Hierarchy of controls

Ranked hazard controls from most to least effective: elimination, substitution, engineering controls, administrative controls and work practices, and personal protective equipment last.

TRIR calculation

Total recordable incident rate equals the number of OSHA recordable cases multiplied by 200,000 and divided by total hours worked by all employees.

Leading versus lagging indicators

Leading indicators measure proactive preventive activities such as inspections and training; lagging indicators measure outcomes such as injury rates, illnesses, and incident severity.

ALARP principle

Risk should be reduced as low as reasonably practicable; further reduction is required unless its cost is grossly disproportionate to the safety benefit gained.

Risk score formula

Risk equals consequence severity multiplied by likelihood; the product ranks hazards on a matrix and sets the threshold for acceptable versus unacceptable risk.

HAZOP guide words

A structured deviation analysis applying guide words - no, more, less, reverse, part of, other than - to process parameters at nodes to identify hazards.

FMEA risk priority number

RPN equals severity multiplied by occurrence multiplied by detection, each rated on a scale, often 1 to 10; higher RPN values indicate higher priority for action.

NIOSH lifting equation

RWL = LC × HM × VM × DM × AM × FM × CM; the lifting index is the load weight divided by the RWL, and values above 1.0 indicate elevated risk.

Hearing conservation threshold

A hearing conservation program is required when noise exposure equals or exceeds an 85 dBA 8-hour time-weighted average, including audiometric testing, training, and hearing protection.

WBGT index

Wet bulb globe temperature combines natural wet bulb, globe, and dry bulb readings (0.7 Tnwb + 0.2 Tg + 0.1 Tdb indoors) to estimate heat stress on workers.

Anthropometric design range

Equipment is sized to accommodate users between the 5th and 95th percentiles, balancing reach limits against clearance so most of the population can use it.

Heinrich accident pyramid

For every serious injury there are about 29 minor injuries and 300 no-injury incidents, suggesting that reducing near misses reduces serious injuries.

Swiss cheese model

Accidents occur when holes in successive defensive layers - organizational, supervisory, and human - align, allowing a hazard trajectory to reach its target.

Relative risk

Relative risk divides the incidence of disease in the exposed group by the incidence in the unexposed group; values above 1.0 suggest increased risk.

Dose-response relationship

As dose increases, the proportion of exposed individuals showing a toxic effect generally increases; key values include threshold, NOAEL, LOAEL, and LD50.

Lockout/tagout sequence

Prepare, notify affected employees, shut down equipment, isolate energy, apply locks and tags, release stored energy, and verify isolation by attempting startup.

Insured versus uninsured costs

Direct insured costs of an accident are usually exceeded by uninsured costs such as lost productivity, hiring and training replacements, schedule delays, and reduced morale.

Fall protection threshold

OSHA requires fall protection at 4 feet in general industry and 6 feet in construction; guardrail top rails are 42 inches plus or minus 3 inches.

Fire tetrahedron

Combustion requires fuel, oxygen, heat, and a self-sustaining chemical chain reaction; removing or interrupting any one of the four extinguishes the fire.

Flammable liquid threshold

NFPA 30 defines a flammable liquid as one with a flash point below 100 degrees Fahrenheit; combustible liquids have flash points at or above 100 degrees.

Fire classes

Class A ordinary combustibles, B flammable liquids, C energized electrical equipment, D combustible metals, and K cooking oils; the extinguisher must match the class.

Incident Command System structure

ICS organizes response under an incident commander with operations, planning, logistics, and finance/administration sections, and it scales from small to large incidents.

Emergency action plan trigger

OSHA requires a written emergency action plan when more than 10 employees are affected; employers with 10 or fewer may communicate the plan orally.

BLEVE

A boiling liquid expanding vapor explosion occurs when a pressurized tank of liquid is heated, relief capacity is exceeded, and the vessel catastrophically fails.

General Duty Clause

OSH Act Section 5(a)(1) requires employers to furnish a workplace free from recognized hazards that are likely to cause death or serious physical harm.

Fatality reporting deadline

Employers must report work-related fatalities to OSHA within 8 hours and in-patient hospitalizations, amputations, or loss of an eye within 24 hours.

CSP Code of Ethics

Certified Safety Professionals must hold paramount the safety, health, and welfare of the public and practice only within their areas of competence.