Exam Questions Flashcards
List all common hazards associated with our hydraulic system
-Fast moving machinery
-Quiet in operation
-High pressures meaning explosive hazard
-Fire hazard with mineral oils as pinhole leaks can cause oil mists
List full safety features Incorporated in a hydraulic system to protect personnel from the above hazards
-Guards are fitted to moving machinery
-Emergency stop buttons
-Relief valves to protect from excess pressure
-Isolation valves to isolate parts for maintenance
Who is responsible for tag out on a hydraulic system
A senior rate
Describe the phrase quite in operation when describing hazards inherent in a hydraulic system
The actuator could be remote from the noisy pump
In which book would you find the following information regarding?
-The service life of a flexible hose.
-Service life of accumulator separator bags
- types of hydraulic fluid filtration used in the RN.
-The checks to be carried out on o seals before installation.
BR2000(53)(2) and BR2000(53)(3)
How much water contamination is permissible in an RN hydraulic system using om33?
500 parts per million
What contaminant in a hydraulic system could cause vibration noise, heat and erratic operation
Air
A visi cross test kit is used to detect which form of contamination
Water
Particulate contamination in a hydraulic system will cause what effects
Erratic operation, wear, scoring, seizing, seal failure and blocked filters
What size of particle is analyzed in samples taken from an RN hydraulic system?
15 microns or larger
The new barrel of oil is to be used to replenish a hydraulic system. What must be done before the oil is transferred
Clean the new barrel before using to ensure it doesn’t contaminate as you don’t know the state of the barrel
What would be the remedy for particulate contamination found in a hydraulic system?
-Drain the system flush and refill
- external or internal filters
- better quality control
Name two places where records can be found of test procedures. Calibration dates in an RN pneumatic system
BR 2000 and BR 3000
Contamination by oil in a pneumatic system could cause which effect
The dieseling effect which is compression causing ignition. The oil May react with oxygen causing explosions
Why a drain valves fitted to air storage bottles
So they are not over pressurized and the pressure can be released