Machine Safety Dictionary

Machine - an assembly powered by a drive other than that of animal or human musclesActivation of protective equipment - the starting time of the protective equipment operation when motion is detected

Risk analysis - identification of hazardous persons

Security - no risk

Complete system halt - the machine stops working

Access time - time to reach the components of the hazardous machine

Access frequency - number of actions to access the protection zone per unit of time

Defect - the inability to perform the function by the object, does not include maintenance and planned repairs; Hazardous Defect - Hazardous Defect; a defect that does not change the security status - a defect that does not affect the security status

Safety features:

  • basic - disturbance causes danger
  • unconditional - they provide security
  • conditional - do not apply to the safety function
  • indirect - interference does not cause immediate danger, but reduces its level

Electro-sensitive protective equipment (EWO) - self-protection components, sensing, control and monitoring equipment switching input signals

Safety-related elements of control systems - they emit input signals

Safety functions of control systems - are responsible for the safety of the machine

Function endangering the machine - function causing the threat

Usage Information - security measures, including signs, symbols, graphs, inscriptions

Isolating and dissipating energy - disconnecting the machine, closing insulated components, dissipating or holding back energy, checking the effectiveness of the procedure

Category - fragmentation of safety control system components

Position switch - it is acted on by a moving element of the machine

Reliability - the ability of the machine to work without failure in specific conditions and periods

Risk assessment - includes economic, environmental and social factors

Safety distance - the distance between the protection zone and the danger zone

Operator - a person performing installation, maintenance, repair works and operating the machine

Cover - the protective part of the machine; permanent cover - permanently connected to a given place; movable cover - can be removable; adjustable guard - has an adjustable position; locking cover - equipped with locking parts; control guard - equipped with blocking parts that prevent operation when the guard is not closed

Susceptibility to repair and maintenance - adjusting the machine to return to safe working condition

Reasonably foreseeable misuse - use of the machine in conditions unsuitable for this

Redundancy - using a different machine, part or system after a failure to ensure the continuity of work

Reset - restoration of safety functions

Risk - the chance of the damage and its severity; tolerated risk - accepted in certain circumstances

Self-supervision - supervision that automatically enables safety measures in the event of a reduction in the ability of a part to perform its function

Zone dangerous - causes exposure to injuries

Situation threats - causes exposure to threats

Pity - damage to health, property or environmental degradation

Means safety - intended to reduce the risk and achieve a tolerable risk

Means protective - necessary to protect people from dangers that cannot be completely eliminated

Activation machinery - starting operation of the machine or its element; unexpected start-up - caused by damage, power return, improper action on the control element, impact of the machine, engine self-ignition

Device blocking - prevents the machine element from working

Device protective - reduces the risk

Device supervising run - transmits a signal preventing the next switching on of the machine

Self-acting distance device - switches off the machine or its elements when entering the protection zone

Limiting device - prevents the device from exceeding the partition values

Mechanical restraining device - having a mechanical barrier

Locking device - closing the machine guard

Supported control device - in operation until the control element is actuated

Two-hand control devices - requires the use of two hands

Step control devices - they allow you to work only in a given part of the room

Devices that restrict access - are physically limited to the danger zone

Enabling control devices - when started manually, it enables work

Damage - the machine is not able to work

Using the machine as intended - proper use of the machine

Danger - puts you at risk of injury

Suspension - suspension of the safety functions while the machine is running

Happening harmful - takes place if the emergency turns into a damage

Detection Ability - sensitivity parameter enabling the protective equipment

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