APOC Operation Department Safety Flashcards

Vocabulary flashcards covering safety guidelines, permit-to-work procedures, hazardous conditions, and operational roles for the APOC plant.

Windsock

A device consisting of an open ring on one end of a tube enclosed by cloth, used to indicate wind direction (which is opposite of where it points) and approximate wind speed to aid evacuation during gas releases or fires.

Noise Induced Hearing Loss Threshold

The sound exposure level of more than $90\,\text{dBA}$ at which hearing loss can occur.

Hearing Conservation Program Requirement

A safety program that becomes mandatory when personnel are exposed to noise levels exceeding $85\,\text{dBA}$.

Material Safety Data Sheet (MSDS) / Safety Data Sheet (SDS)

A document containing information on the potential health, fire, reactivity, and environmental hazards of a chemical product, as well as instructions on how to work safely with it.

Safe Work Permit

A written contract and authorization between the Issuer and Receiver permitting maintenance, service, and project activities by defining the work, hazards, preparation, and necessary safety precautions.

Class A Permit

A high-risk work permit covering open flames, welding, hot tapping, power tools, confined space entry, excavations of depth $\ge 1.2\,\text{meters}$, live electrical troubleshooting for $> 400\,\text{V}$, live repair for $50\text{--}240\,\text{V}$, and de-energized repairs $> 400\,\text{V}$ (excluding motors).

Class B Permit

A work permit covering line opening, process isolation, cold cutting, vehicle movement in hazardous/unpaved areas, circuit breaker isolation, live repairs $< 50\,\text{V}$, electrical troubleshooting between $50\,\text{V}$ and $400\,\text{V}$, radioactive materials, all excavations, and spray painting or painting on surfaces $> 60\,^\circ\text{C}$.

Class C Permit

A low-risk work permit for scaffolding erection/removal, insulating, painting, housekeeping, routine instrument repairs not involving process isolation, greasing, and machinery vibration monitoring.

Class A and Class B Permit Issuer

The Shift Supervisor, who is designated to authorize and issue both Class A and Class B permits.

Class C Permit Issuer

The Authorized Operations Representative (Lead or Senior Operator), who issues Class C permits as no final approval is required.

Confined Space Entry Permit Approver

The Department Manager or their designated representative, whose counter-signature is mandatory for entry authorization.

Excavation Permit Counter-Signer

A representative from Engineering Support (Civil Engineer), whose counter-signature is required because they possess complete details of underground cables and piping.

Radiological Safety Officer (RSO)

The designated safety officer whose counter-signature is compulsory for any job involving radiography or radioactive elements.

Safe Work Permit Validity Period

A maximum period not to exceed $24\,\text{hours}$ from the original issue time, requiring renewal following any work interruption exceeding $2\,\text{hours}$.

Unsafe Condition Report (UCR)

Documentation of any hazardous physical condition in the workplace—such as faulty equipment, slippery floors, or exposed wiring—that could potentially cause an accident or injury.

Unsafe Act (UA)

Any behavioral action that increases the risk of an accident, including ignoring safety procedures, failing to wear protective equipment, or operating machinery improperly.

Near Miss

An unplanned event that had the potential to result in an accident or injury but was avoided by chance or timely intervention.

Accident

An unplanned event that results in injury, illness, or property damage.

Valid Safe Work Permit

A permit with Sections I, II, and III fully completed, valid exclusively for the specific job and time duration recorded on the document.

Confined Space

Any space with limited means of access that is subject to hazards such as oxygen deficiency, dust, or toxic and flammable gases, where purging/ventilation must cease $15\,\text{minutes}$ prior to atmospheric testing.

Confined Space Oxygen Limit

The safe atmospheric oxygen concentration range of $19.5\text{--}23.5\%$ required to conduct work inside a confined space.

Master Card

A formal document used to record all operational actions taken to isolate a piece of equipment for maintenance.

Green Master Card

The specific master card applied to all maintenance jobs that require Lockout/Tagout (LOTO).

Pink Master Card

A supplemental master card used alongside the Green Master Card for tasks involving physical entry into a confined space or hot work/welding requiring slip blinding or disconnected lines.

Temporary Release of Master Card

A temporary suspension of equipment isolation performed to verify the performance or operational health of equipment, such as a solo run of a motor.

SHE Critical Instrument Bypass Authorization Permit

A permit used to bypass safety-critical instruments and systems (e.g., DCS/ESD interlocks, PSVs, Deluge systems) with a maximum validity of $1\,\text{week}$ approved by the Department Manager.

Entry Attendant

A designated safety individual identified by a green-colored vest responsible for controlling access, monitoring entrants during entry/exit, checking space conditions, and ordering immediate evacuation upon a gas alarm.

Safety Watch

A designated safety observer wearing a red-colored vest who monitors Class A work conditions, verifies gas test intervals, controls adjacent area hazards, and initiates alarms or emergency evacuations.