Course Description

In this module, learners will come to know about the importance, components, operation, and detecting alarm signals of the Shaft Sealing System.

Duration

1.5 Hours

Target Audience

Leadership

Supervisors

Operations

Mechanical Maintenance

Operation & Maintenance Personnel

Prerequisites

Participants should have:

• Course material is in English; therefore, a reasonable ability to read and understand English is required.

Class Size

Remote access.

Learning Objectives

This course will provide basic knowledge on the following:

• Identify the location and function of seal rings.
• Explain why seal oil purity and pressure must be controlled for proper seal oil operation.
• Explain the difference between a vacuum treated system and a scavenging system.
• Explain how hydrogen is extracted from seal oil.
•  Identify the components, location, and functions of the Shaft Sealing System. 
• Identify the components and control valves of the Shaft Sealing System.
• Explain the emergency bypass procedure that must be implemented by the operator in the event of the float trap failure.
• Adjust the alarms and the alarm system that directly impact the hydrogen oil system.
•  Interpret the alarm signals and take corrective action for specific conditions.
• Describe the various tests conducted on a Shaft Sealing System.
•  Explain the procedures to assemble, inspect, and reassemble a typical hydrogen shaft seal assembly and its associated parts.

Course Content

Lesson 1 - Operation principles

1. Operating principles of the shaft sealing system

Lesson 2 - MAJOR COMPONENTS

1. Seal Oil Reservoir
2. Seal Oil Pumps
3. Differential pressure governor
4. Relief Valve
5. Seal Oil Filter
6. Transfer Valve

Lesson 3 - SYSTEM OPERATION

1. Air Draining Tanks
2. Hydrogen detraining tank
3. Liquid Detector
4. Float Trap
5. Bypass Valve
6. Alarms

Lesson 4 - INSPECTION

1. Daily Tests
2. Weekly Tests
3. Tooling

Lesson 5 - DIFFERENCES BETWEEN GE AND LEGACY ALSTOM

1. Differences between seal oil systems between GE and LA

Lesson 6 - ASSESSMENT

1. Final Exam