Dry Gas Seal Maintenance

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  • Fees : 2900 $
  • Date 18 Aug 2019
  • Location Dubai, English

DRY GAS SEAL  MAINTENANCE

Course Description 
 

The course considers major aspects of Dry Gas Seal Systems applications and operation.  It provides review of dry gas seal theory and in depth analysis of system application, design and a guide to seal and system component selection. Also, the course provides an overview of system reliability, safety and troubleshooting.

Course Objective
 

Dry Gas Seal Course

1.     Sealing of centrifugal compression equipment

1.     Compressor principals of operation

2.     Axial and Beam style compressors, turbo expanders, centrifugal pumps

3.     Pressure / Velocity through compression stage

4.     Axial Force, Balance Piston and Bearings

5.     Shaft sealing

6.     Seal cavity design

7.     Seal effect on rotordynamics

8.     Compressor factory testing

9.     Gas seal installation & commissioning

10.   Gas seal operation & maintenance

11.   API-617 Requirements

2.     Dry Gas Seals – Physical and Engineering principals of Operation and Design

1.     Physical principals

2.     Engineering design

3.     Materials

4.     DGS arrangements

5.     Secondary sealing elements

6.     DGS factory testing

3.     Requirements to sealing medium, its conditioning and control

1.     Quality of Sealing Gas – requirements

2.     Sources of Sealing gas

3.     Gas conditioning

4.     Sealing gas controls and monitoring

5.     Alarms and Shutdowns

6.     API-614 requirements

4.     Examples of applications

1.     Refineries

2.     Production (offshore and onshore)

3.     Pipelines

4.     Chemicals

1.     Low pressure refrigeration

2.     Toxic

5.     LNG

5.     DGS Retrofits

1.     Assessing feasibility of a retrofit

2.     Why Rotordynamics

3.     Cavity considerations & Seal selection

4.     Compressor modification

5.     Tooling

6.     DGS Failures and Troubleshooting

1.     Liquid contamination

2.     Particulate contamination

3.     Incorrect Installation

4.     System Failures

5.     Case studies / examples

6.     Measures to improve DGS reliability
 

COURSE OUTLINE

Chapter 1

·         Compressor principals of operation

·         Axial and Beam style compressors, turbo expanders, centrifugal pumps

·         Pressure / Velocity through compression stage

·         Axial Force, Balance Piston and Bearings

·         Shaft sealing

·         Seal cavity design

·         Seal effects on Rotordynamics

·         Compressor factory testing

·         Gas seal installation & commissioning

·         Gas seal operation & maintenance

·         API-617 Requirements

Chapter 3

·         Quality of Sealing Gas – requirements

·         Sources of Sealing gas

·         Gas conditioning

·         Sealing gas controls and monitoring

·         Alarms and Shutdowns

·         API-614 requirements

Chapter 2

·         Principles of Operation

o    Gas seal overview

o    Gas seal groove patterns

o    Stability of seal gap

o    Axial travel limitations

o    Seal leakage

o    Seal contamination

o    Thermal distortion

·         Materials of Construction

o    Sealing faces

o    Metal adaptive hardware

o    Labyrinth seals

o    Secondary seals

Chapter 4

·         Dry Gas Seals Examples of Application

·         Oil and Gas Production On-Shore and Off-Shore

·         Refinery Applications

·         Gas Pipelines

·         Chemicals

·         LNG

 

Chapter 5&6

·         Assessing feasibility of a retrofit

·         Why Rotor dynamics

·         Cavity considerations & Seal selection

·         Compressor modification

·         Tooling

·         Liquid contamination

·         Particulate contamination

·         Incorrect Installation

·         System Failures

·         Case studies / examples

·         Measures to improve DGS reliability

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