Logo

Mechanical Seals Installation and Repair

Introduction

Mechanical Seals Installation and Repair

Course Objectives

• Adequate knowledge and information about mechanical seals, including tips for accurate selection, troubleshooting and maintenance
• The required knowledge to consider all necessary aspects before procuring mechanical seals
• The experience and exposure to troubleshoot in case of failures and quickly restore normal working conditions, thereby reducing downtimes drastically
• The confidence and knowledge to train other professionals on mechanical seal selection, troubleshooting and maintenance
• The required understanding and awareness to review equipment with mechanical seals and plan maintenance activities in advance to prevent excessive or irreversible wear and tear, thus contributing to organizational cost-saving
• Awareness of the most appropriate techniques for treating different types of seals to prevent unnecessary damage during maintenance
• The overall skills and capabilities required to handle all problems related to mechanical seals, thereby specialising in mechanical seals, inviting proactive opportunities offered for growth and progression
• The knowledge and understanding to conduct both preventive and predictive maintenance for mechanical seals, as required

Who Should Attend?

• Vendors and suppliers of mechanical seals who need to understand their utility and importance in a mechanical setting
• Engineers and other employees working on equipment employing mechanical seals
• Managers and supervisors overseeing all operations at a plant involving equipment with seals
• Finance managers and others involved in purchase decisions and budgets of mechanical seals
• Senior members and the Board of Directors of organizations who plan strategies and projects assuming good machine life and efficiency
• Internal and external auditors inspecting equipment and the plant surroundings for employee health and safety
• Any other professional interested in knowing more about mechanical seals selection, troubleshooting and maintenance

Course Outline

Module 1 – Types of Mechanical Seals

• Pusher type
• Unbalanced type
• Conventional mechanical type
• Non-pusher type
• Balanced type
• Cartridge type

Module 2 – Components of a Simple Mechanical Seal Design

• Stationary component
• Stationary component sealing member
• Rotating component
• Rotating component sealing member
• Spring
• Gland plate
• Clamp ring

Module 3 – Reasons for Failure of Mechanical Seals

• Pump or machine running dry
• Too much vibration
• Hammering couplings
• Human error
• Use of the wrong seal

Module 4 – Considerations for Mechanical Seal Selection

• Liquid
• Pressure
• Temperature
• Liquid characteristics
• Reliability and emission concerns

Module 5 – Factors Influencing Seal Leakage

• Machined finish of sliding faces
• Flatness of sliding faces
• Machine vibrations
• Mode of operation
• Characteristics of medium to be sealed
• Installation of seal

Module 6 – Seal Supply Systems

• Circulation
• Flushing
• Quench
  • Fluid quench
  • Steam quench
  • Gas quench
• Barrier system

Module 7 – Aspects for Seal Troubleshooting

• Corrosion
• Physical damage
• Physical causes
• Product problems

Module 8 – Seal Face Wear Patterns

• Normal wear patterns
• Narrow wear patterns
• Wide wear patterns
• No wear patterns
• Intermittent wear patterns
• Uneven wear patterns
• Deep wear patterns

Module 9 – Seal Face Examinations

• Heat checking
• Cracked hard face
• Chipped edges
• Flaking and peeling
• Pitting, blistering, corrosion

Module 10 – Mechanical Seal Maintenance

• Lack of mechanical seals
• Keep ports on gland plant plugged
• Use a hydraulic cylinder
• Remove shaft deflection
• Reduce vibrations
• Keep stuffing box pressure within limits

Module 11 – Seal Failure Analysis

• Inspect rotary equipment
• Inspect mechanical seal
• Decontaminate any seal
• Inspect seal