Plant Communications, Industrial Drawings, and Energy Plant Sketching

Vocabulary practice flashcards covering plant communications, industrial engineering diagrams, drawing layouts, and energy plant sketching techniques.

Base Station

A high-powered transceiver, typically situated in the plant control room, used for two-way radio verbal communication with field operators.

Five by Five

A two-way radio procedure term indicating that the radio transmission is strong and clear, spoken in response to a radio check.

Ten Four

A two-way radio brevity code meaning the message is received and understood; synonymous with 'Roger That'.

Emergency, Emergency, Emergency

A transmission phrase spoken to interrupt all ongoing radio communications due to an active emergency; 'Break, Break, Break' is sometimes used interchangeably.

Plant Logbook

A formal, legally binding record maintained by power engineers to record operational facts, tests, and shift activities, admissible as evidence in a court of law or Coroner's inquest.

Operating Logsheet

A formal, regularly updated reading sheet used to record operating parameters (such as pressures, temperatures, and flows) that can serve as legal evidence in plant investigations.

Routine Maintenance

Regularly scheduled operational tasks performed daily, weekly, or monthly, such as rotating standby pumps, checking fire extinguishers, or testing steam traps.

Preventative Maintenance (PM)

A scheduled maintenance approach consisting of mechanical servicing and paperwork designed to identify developing problems and prevent equipment breakdowns before failure occurs.

Emergency Maintenance

Unplanned and unscheduled maintenance performed in response to unexpected equipment failure, often referred to as 'crash' maintenance.

Work Request

A formal document initiated by operations or maintenance personnel outlining required work, troubleshooting findings, isolation requirements, priority level, and related drawing details.

Equipment Record Card

A document or electronic record detailing equipment specifications, catalog numbers, service dates, electrical ratings, design parameters, and associated drawing numbers.

Equipment Repair Record

A permanent operational document—also known as equipment history—tracking all repairs, replacement parts, labor hours, and costs associated with a specific machine.

Standard Operating Procedure (SOP)

A documented, formatted, and strictly controlled instruction set outlining the safe, repeatable execution of a specific plant process or task.

Title Block

A standard drawing section located in the bottom right corner that identifies the drawing title, owner, drawing number, scale, and references to related drawings.

Drawing Grid System

A system of alphanumeric coordinates placed along the borders of complex schematics to allow specific components or points to be quickly located.

Revision Block

A dedicated table on a drawing where revisions are logged with a revision number, summary of changes, and date, starting with revision 0 when first issued.

Process Flow Diagram (PFD)

A simplified, non-scale schematic illustrating major equipment items, flow directions, design operating temperatures, and pressures, without showing pipe line sizes or comprehensive instrumentation.

Piping and Instrumentation Diagram (P&ID)

A comprehensive, non-scale mechanical flow diagram detailing all plant piping, line IDs, equipment, valves, instrument control devices, and safety systems.

Material Balance Drawing

A diagram accompanying a PFD that applies the law of conservation of mass, displaying molar flow rates ($\text{mols/d}$) and mole percentages across various stream compositions.

Construction Drawing

A scaled engineering drawing with exact dimensions showing standard views (plan, front, and side) used by fabricators to manufacture components and equipment.

General Arrangement (GA) Drawing

A drawing that depicts the overall physical layout and relationship between primary components and key dimensions of an assembly without detailing individual parts.

Block Plan

A simplified schematic where geometric shapes represent overall unit operations or plant processes rather than individual pieces of mechanical equipment.

Electrical Single Line Schematic

A diagram showing the electrical distribution network, switchboards, relays, and bus connections between power sources and motor loads.

Plot Plan

A scaled equipment layout drawing that establishes the geographic position of equipment on the site, boundary limits, pipe rack elevations, and compass orientation toward North.

Equipment Diagram

A detailed graphical illustration presenting a pictorial or cutaway view of an individual mechanical component, showing internal components.

Centre Line

A lightly drawn reference or foundation line from which features are spaced and measurements are projected during technical sketching.

Dimension Line

A line capped with arrowheads used alongside extension lines and dimension numerals to indicate the distance between two specific points on a sketch.

Orthographic Projection

A method of representing a three-dimensional object on a two-dimensional plane using at least two perpendicular standard views.

Front View

The primary or key view of an object selected in drafting from which the remaining standard views (such as plan or side views) are projected.

Section Lining

Cross-hatching lines drawn generally at a $45^\circ$ angle to represent cut surfaces and indicate specific materials of construction on internal sectional views.

Single Line Drawing

The most common drawing method used for plant line tracing and systems where pipelines are illustrated as single continuous lines without indicating pipe diameter.

ASME A13.1 Flammable Fluids

Piping identification standard requiring black letters on a yellow field for fluids that are vapors or produce vapors that can ignite and burn in air (e.g., Ammonia).

ASME A13.1 Combustible Fluids

Piping identification standard requiring white letters on a brown field for fluids that may burn but are not classified as flammable (e.g., Diesel Fuel).

ASME A13.1 Toxic and Corrosive Fluids

Piping identification standard requiring black letters on an orange field for fluids that are corrosive or produce toxic substances (e.g., Sulfuric Acid).

ASME A13.1 Fire Quenching

Piping identification standard requiring white letters on a red field for water and chemicals used in fire sprinkler and suppression systems.

ASME A13.1 Other Water

Piping identification standard requiring white letters on a green field for non-potable or operational plant water streams, such as boiler feed water.

ASME A13.1 Compressed Air

Piping identification standard requiring white letters on a blue field for pressurized gases or vapors not classified under any hazardous category.