Small Vessel Second Engineer Auxiliary Equipment Part I Exam
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Questions and Answers

Describe two methods for remote actuation of tank quick closing valves.

Two methods for remote actuation of tank quick closing valves are hydraulic and pneumatic systems.

Explain how cavitation damage occurs within a pump.

Cavitation damage in a pump occurs when vapor bubbles implode near the impeller, causing erosion and pitting of the metal surface.

Sketch a starting air reservoir, labeling all mountings.

Answers may vary, but should include key components like safety valves, pressure gauges, drain valves, and pressure switches.

State two coatings that can be used to protect the interior surface of a large air reservoir against corrosion.

<p>Two coatings that can be used are epoxy coatings and zinc coatings.</p> Signup and view all the answers

State two operational causes of increased cavitation within a pump.

<p>Two operational causes of increased cavitation within a pump are high suction pressure and excessive pump speed.</p> Signup and view all the answers

Explain why tank quick closing valves are fitted.

<p>Tank quick closing valves are fitted to prevent spillage of hazardous liquids in case of emergencies or accidents.</p> Signup and view all the answers

Discuss the importance of non-programmable calculators in the examination.

<p>Non-programmable calculators are allowed to ensure fair assessment of candidates' engineering calculations without the aid of stored formulas or algorithms.</p> Signup and view all the answers

Why must candidates state all formulae used and show all intermediate steps in their answers?

<p>Candidates must show all calculations to demonstrate their understanding of the engineering principles involved and allow for partial credit if the final answer is incorrect.</p> Signup and view all the answers

State one advantage and one disadvantage of a compressed air system compared to a hydraulic system.

<p>Advantage: lower maintenance costs; Disadvantage: lower power density</p> Signup and view all the answers

Why is it desirable to remove moisture from the air?

<p>To prevent corrosion and damage to components</p> Signup and view all the answers

Why is it desirable to limit oil carry over?

<p>To avoid contamination and maintain system efficiency</p> Signup and view all the answers

Describe how the removal of moisture from the air is achieved.

<p>Through the use of moisture separators and dryers</p> Signup and view all the answers

Describe how the limiting of oil carry over is achieved.

<p>By using effective filtration systems</p> Signup and view all the answers

Why are spherical bearings required on the ram ends of steering gears?

<p>To accommodate misalignment and reduce friction</p> Signup and view all the answers

How may maneuvering be maintained if the control system fails for a vessel with a single electro/hydraulic controllable pitch propeller?

<p>By using emergency backup systems or manual control</p> Signup and view all the answers

What action should be taken if the hydraulic system irreparably fails while on route and the blades assume zero pitch?

<p>Activate emergency protocols to secure the propeller</p> Signup and view all the answers

Describe the tightening procedure for main propulsion shaft hydraulic sleeve type couplings.

<p>Gradual and even tightening of bolts in a specific sequence</p> Signup and view all the answers

How is it determined that the push fit is complete in main propulsion shaft hydraulic sleeve type couplings?

<p>By measuring the gap between the coupling halves</p> Signup and view all the answers

Explain how a new motor is aligned with an existing pump.

<p>By adjusting motor position and checking alignment with a straight edge</p> Signup and view all the answers

State three checks that should be made before using the pump after the motor has been aligned.

<p>Check alignment, secure all connections, test operation</p> Signup and view all the answers

Study Notes

Certificates of Competency for Engineers (Yacht) Examinations

  • The examination is administered by the Scottish Qualifications Authority on behalf of the Maritime and Coastguard Agency.
  • The examination consists of 100 marks, and candidates must achieve 50 marks to pass.

Auxiliary Equipment Part I

  • The examination paper includes questions on auxiliary equipment, and candidates must attempt all questions.

Tank Quick Closing Valves

  • Two methods for remote actuation of tank quick closing valves are:
    • Method 1 (sketch required)
    • Method 2 (sketch required)
  • These valves are typically fitted in:
    • Location ( specify)
  • The purpose of fitting tank quick closing valves is:
    • Reason ( specify)

Pump Cavitation

  • Cavitation damage occurs within a pump due to:
    • Explanation
  • Two operational causes of increased cavitation within a pump are:
    • Cause 1 (with reasons)
    • Cause 2 (with reasons)

Starting Air Reservoir

  • A starting air reservoir includes the following mountings:
    • Mounting 1 (label)
    • Mounting 2 (label)
    • ... (and so on)
  • Two coatings that can be used to protect the interior surface of a large air reservoir against corrosion are:
    • Coating 1
    • Coating 2

Air Compressors and Pneumatic Control Systems

  • One advantage of a compressed air system compared to a hydraulic system is:
    • Advantage
  • One disadvantage of a compressed air system compared to a hydraulic system is:
    • Disadvantage
  • Removing moisture from the air is desirable because:
    • Reason
  • Limiting oil carry over is desirable because:
    • Reason
  • Removal of moisture from the air is achieved by:
    • Method
  • Limiting oil carry over is achieved by:
    • Method

Two Ram Steering Gears

  • A two ram steering gear arrangement includes:
    • Spherical bearings
    • Rams and tiller
    • Fittings (sketch required)
  • Spherical bearings are required on the ram ends because:
    • Reason

Electro/Hydraulic Controllable Pitch Propeller

  • If the control system fails, manoeuvring can be maintained by:
    • Method
  • If the hydraulic system irreparably fails whilst on route and the blades assume zero pitch, the action to be taken is:
    • Action

Main Propulsion Shaft Hydraulic Sleeve Type Couplings

  • The tightening procedure for main propulsion shaft hydraulic sleeve type couplings involves:
    • Steps (with sketch)
  • The push fit is complete when:
    • Determination method

Motor Alignment

  • Aligning a new motor with an existing pump involves:
    • Steps (with sketch)
  • Three checks to be made before using the pump after the motor has been aligned are:
    • Check 1
    • Check 2
    • Check 3

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Description

Prepare for the Small Vessel Second Engineer Auxiliary Equipment Part I exam administered by the Scottish Qualifications Authority on behalf of Maritime and Coastguard Agency. This quiz covers topics related to auxiliary equipment for small vessels.

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