Exam Question
Sketch and describe the operation of a four-ram electro-hydraulic steering gear system. Indicate and explain the valve positions for the operation of the system when one pump is isolated and the unit is operating on Iwo rams only.
Class 2 (2nd Engineer)
MEKG
📅 Apr 2018
Reference Answer
According to SOLAS chapter - 2, part 1, regulation 29.16, every tanker of more than 10,000 GT shall comply with the following:
The main steering capability due to a single failure in any part of one of the power actuating systems shall be regained in not more than 45 seconds.
The main steering shall comprise at least two identical power actuating systems, each capable of meeting the requirements. Loss of fluid from one system shall be capable of being detected, and the defective system shall automatically get isolated so that the other system shall remain fully operational
Considering the above regulatory requirements, given below is a “Fail Safe steering gear” suitable for use on a tanker of more than 100,000 T DWT.
The main steering capability due to a single failure in any part of one of the power actuating systems shall be regained in not more than 45 seconds.
The main steering shall comprise at least two identical power actuating systems, each capable of meeting the requirements. Loss of fluid from one system shall be capable of being detected, and the defective system shall automatically get isolated so that the other system shall remain fully operational
Considering the above regulatory requirements, given below is a “Fail Safe steering gear” suitable for use on a tanker of more than 100,000 T DWT.
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