Uploaded on

 

More in: Business , Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
817
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
67
Comments
0
Likes
1

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. START-UP AND OPERATION OF MECHANICALLY SEALED EQUIPMENT 1:13
  • 2. START UP & OPERATION SEALS ARE ESPECIALLY VULNERABLE DURING THIS TIME, SO IT IS IMPORTANT TO GIVE ATTENTION TO THE FOLLOWING INFORMATION...
  • 3. SINGLE INSIDE SEAL
    • Start-Up Procedures
      • Gradually Heat up or Chill Down if Applicable
      • Heating / Cooling on
      • Steam / Gas Purge on
      • Verify that Environmental Control Piping is Properly Connected
  • 4.
    • Start-Up Procedures
      • Suction Valve Open
      • Discharge Valve Closed to One-Quarter open
      • Start Pump and Gradually Open Discharge Valve to Proper Flow
    SINGLE INSIDE SEAL
  • 5.
    • Operating Procedures
    • After Start-Up, Check for: Leakage, Squealing, Vibration or Cavitation
    • Never Adjust Flow with the Suction Valve. It must ALWAYS BE WIDE OPEN
    • If the Pump is Running Dry, the Seal is Not Being Lubricated. Severe damage to the seal and/or pump may occur. Turn the Pump Off Immediately
    SINGLE INSIDE SEAL
  • 6. DUAL PRESSURIZED SEAL
    • Start-Up Procedures
    • Gradually Heat up or Chill Down if Applicable
    • Heating / Cooling on
    • Steam / Gas Purge on
    • Verify that Environmental Control Piping is Properly Connected
  • 7. DUAL PRESSURIZED SEAL
    • Start-Up Procedures
    • Ensure Adequate Liquid Level in Buffer Supply Tank or
    • Ensure that Barrier System is Operational
    • Double Check Barrier Piping to the Seal Inlet & Outlet to Ensure that They are Correct for Pump Rotation
  • 8. DUAL PRESSURIZED SEAL
    • Start-Up Procedures
      • Apply and Check for Adequate Barrier System flow through the Seal
      • Ensure that Barrier Pressure is 20 to 25 psi. Greater than Anticipated Stuffing Box Pressure (Suction + %(Differential))
  • 9. DUAL PRESSURIZED SEAL
    • Start-Up Procedures
      • Suction Valve Open
      • Discharge Valve Closed to One-Quarter Open
      • Start Pump
      • Gradually Open Discharge Valve to Full Open
  • 10.
    • Operating Procedures
    • After Start-Up, Check for: Leakage, Squealing, Vibration or Cavitation
    • Never Adjust Flow with the Suction Valve. It must ALWAYS BE WIDE OPEN
    • If the Pump is Running Dry, damage may occur to the pump. Turn the Pump Off
    DUAL PRESSURIZED SEAL
  • 11.
    • Operating Procedures
    • Never Remove Barrier Supply from the Seal While the Pump has Process Liquid Applied
    • If Seal Begins to Leak Barrier Fluid to Atmosphere, Plan Maintenance as Soon as Possible. Delaying Removal may Damage the Seal Beyond Economical Repairability
    DUAL PRESSURIZED SEAL
  • 12. Reminders
    • The Pumped Liquid Lubricates Single and Non- Pressurized Inner Seals only! Dry running destroys them !
    • Suction Valve Always Wide Open Before Pump Start-Up
    • Heat or Cool Gradually
    • Never Throttle a Pump with the Suction Valve
    • Start a Centrifugal Pump with the Discharge Valve 25 Percent Open Where Possible
    • Always Start a Positive Displacement Pump with the Suction and Discharge Valves Wide Open
  • 13. Reminders
    • Report Cavitation, Vibration, Leakage, Squealing
    • Do Not Run a Pump at Shut-Off
    • Barrier Liquids for Pressurized Seals Must Be Pressurized Before the Pump Valves are Opened
    • Barrier Fluid Circulation Systems Must Be Operational and Applied Before the Pump Valves are Opened
    • Inlet & Outlet Must be Piped in Accordance with Specified Rotation of The Pump
  • 14. Reminders
      • Use Tubing Where Possible
      • Do Not Tie Inlet & Outlet Lines Together
      • Do Not Remove Pressure Source to Add Barrier Fluid to a Sealing System that is in Operation
      • Seal & Piping System Must Not Trap Air Anywhere
      • All Supply Lines Must Slope up to Reservoir / Tank
      • Flush Out All System Components after a Seal Failure
  • 15. END START-UP AND OPERATION OF MECHANICALLY SEALED EQUIPMENT