18 Questions
What material is fire extinguisher plumbing usually made of?
Stainless steel
Why should plumbing never be stretched during installation?
To ensure it fits properly
What is a key precaution to observe when installing fire extinguisher plumbing?
Support it with pipe clamps
Which personnel are authorized to perform maintenance on explosive cartridges systems according to the text?
Only suitably trained and authorised personnel
What should be the approval process for any new replacement or manufactured fire extinguisher plumbing lines?
Approval from the System Program Office or an approved authority
Why should plumbing never be attached to electrical looms during installation?
To avoid interference with electrical systems
What is the primary function of the Inconel tube in the Fenwal fire-detecting element?
To provide a protective sheath
Which two companies' sensors are commonly referred to as fire-wire due to their similar construction?
Fenwal and Walter
What is the range of lengths in which tubular fire detectors are manufactured for modern aircraft?
Less than one meter to over four meters
What is the typical diameter range of tubular fire detectors used in modern aircraft?
1.5 to 2.3mm
What material fills the space between the centre conductor and the tubing wall in the Fenwal fire-detecting element?
Ceramic insulating material
In the context of fire detection systems on aircraft, what is the primary role of the Fenwal, Walter, and Kidde sensors?
Detecting overheat or fire conditions
What happens to the eutectic salt mixture when the sensing element is exposed to a fire?
It melts, causing the resistance of the ceramic material to decrease.
What role does the ceramic material play in a thermal switch fire detection system under normal conditions?
Acts as an insulator and prevents current flow between inner and outer conductors.
What is the function of the eutectic salt mixture in the sensing element of a fire detection system?
Facilitates rapid change in resistance of the ceramic material in case of a fire.
In what scenario would current flow between the inner and outer conductors of a fire detection system be initiated?
When the temperature of the sensing element is low.
What is one significant similarity between the Walter Kidde and Fenwal fire detection sensors?
Both contain two wire conductors embedded in thermistor material.
What is the function of one of the inner conductors being grounded in the Walter Kidde fire detection sensor?
To prevent short circuits between conductors.
Test your knowledge on safety precautions related to explosive cartridges systems and plumbing maintenance. This quiz may cover topics such as handling explosive materials, maintenance protocols, and plumbing terminology.
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