steam engine

Steam-to-work architecture

Record the evidenced conversion architecture and whether the item is functional equipment, a replica or a non-operating representation.

1. Which moving element receives work from steam, and how does that motion reach the output? definition
2. Which drawings, markings or inspections establish the architecture and intended working fluid? provenance

Owned assembly and connections

Record the engine boundary, including integrated auxiliaries and interfaces to separately modelled equipment.

1. Which admission valves, drains, lubricators, governors and transmission elements belong to this engine assembly? boundary
2. Where are the steam inlet, exhaust outlet and mechanical output boundaries, and what equipment connects to each? boundary

Admission control

Record applicable valve timing, cutoff, throttling or nozzle admission arrangements without assuming a piston cycle.

1. Which mechanism determines when, where and how much steam enters the work-producing elements? definition
2. Which admission settings are adjustable, and what documented constraints govern adjustment? action

Expansion route

Record the steam route through cylinders, chambers or stages and its connection to the exhaust system.

1. Does steam perform work in one element or pass through successive expansion elements, and how are they connected? definition
2. Does exhaust discharge to atmosphere, a condenser or another steam system, and what interface requirements apply? boundary

Inlet and exhaust evidence

Keep measurements, design ratings and operating restrictions distinct, with locations and pressure reference bases.

1. What inlet pressure, inlet temperature and exhaust pressure were measured together, at which locations and operating state? measurement
2. What evidence establishes the allowable steam conditions and any restrictions concerning wet steam or liquid carryover? provenance

Performance at stated conditions

Record measured output and consumption with sufficient context to distinguish degradation from changed operating conditions.

1. What mechanical output and steam mass flow were measured over the same interval, at what speed and load? measurement
2. Which documented test or previous observation provides a comparable performance baseline? provenance

Output kinematics and load

Record direct linear output or the shaft, crank, gearing and coupling arrangement that delivers rotary output.

1. How do the piston, rotor or other moving elements transmit work to the connected load? definition
2. What speed, torque, force and direction requirements does the connected load impose? measurement

Control authority and response

Record available controls, their verified functions and the evidence supporting protective responses.

1. Which controls regulate speed or output, and is reversal supported by this engine and installation? action
2. What evidence establishes the response to load loss, governor malfunction or excessive speed? provenance

Condition evidence

Record architecture-relevant leakage, corrosion, wear, lubrication, drainage and motion observations, distinguishing symptoms from diagnosed causes.

1. What inspections or measurements establish the condition of steam passages, seals, bearings and applicable working clearances? measurement
2. What evidence shows that required lubrication and condensate-removal provisions are present and functional? provenance

Action prerequisites

Record which procedures, inspections and interface conditions support startup, operation, shutdown or maintenance.

1. Which documented prerequisites remain unmet for the proposed startup, load change or operating test? action
2. What verified isolation and residual-energy conditions are required before opening steam-containing parts or accessing moving mechanisms? action

Kinds and varieties

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these kinds and varieties hold for the sense of steam engine this model covers, and on what evidence? provenance

Identifiers and schemes

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these identifiers and schemes hold for the sense of steam engine this model covers, and on what evidence? provenance

Standards and regulation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these standards and regulation hold for the sense of steam engine this model covers, and on what evidence? provenance

Real-world use

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these real-world use hold for the sense of steam engine this model covers, and on what evidence? provenance

Typical measurements

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these typical measurements hold for the sense of steam engine this model covers, and on what evidence? provenance

Failure modes and hazards

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these failure modes and hazards hold for the sense of steam engine this model covers, and on what evidence? provenance

Regional variation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these regional variation hold for the sense of steam engine this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of steam engine this model covers, and on what evidence? provenance