Refining Community Logo

Breakout Discussion – Maintenance and Reliability

Home Forums Conferences 2013 Breakout Discussion – Texas Coking Breakout Discussion – Maintenance and Reliability

This topic contains 0 replies, has 1 voice, and was last updated by  Anonymous 7 years, 6 months ago.

  • Author
    Posts
  • #1651

    Anonymous

    Facilitators – Les Osborne, Curtiss Wright & Jeff Szcinski, ProGuard-Mahle Ind. Filtration
     
    FLANGE  LOC/ FAILURE
    Multiple LOC with RF flanges (charge lines)

    • All spiral wound gaskets
    • NO ‘thermal recovery’
    • Existing torqueing protocol
    • Drum-specific failures

    Potential Causes

    • Vibration
    • Torsional stress
    • Gasket type/design
    • Bolting ‘relaxing’ (torque loss)
    • Over-torqueing &/ or ‘flange roll’

    Delta Valves – Retorque

    • Excess ‘torqueing’ detrimental
    • ‘tensioning’ option
    • Bolting MOC influences

    JET PUMP WEAR (THRUST)
    Existing procedures to minimize jet water particulate (150 ppm spec)

    • Tank blowdown
    • Clear well cleaning

    –          Erosion confirmed
    –          Maze/well sparging
    –          Jet pump monitoring

    • Discharge flow & pressure
    • Drill times
    • Suction screen maintenance
    • Vibrations

    GENERAL PM/ VALVE RELIABILITY
    ‘Dry’ steam critical – purges

    • Avoid dead heads
    • Stm trap maintance lacking

    Steam pressure critical

    • Regulation (20-25 psig increase line pressure)

    –          Temp gun leakage detection
    –          Pitfalls of SPR HT Steam
    –          Consider AMP-monitoring of MOVs
    –          Don’t underestimate effect of GREASE
    MAZE/WELL PUMPS
    HEATER MAINTENANCE ISSUES
    –          Dampers
    –          Burners

    • Steaming in situ

    –          Firebox air leakage
    –          Explosion door PM
    –          Frequency of trip-testing
    –          Pigging management/ awareness
    PROCESS HOSE PM
    PM or replace plan? (frequency = TA or 5 yr)

    • If existing, type ‘visual’

    Though infrequent, hose failures have caused outages

    • CA
    • LA

    Consider post-mortem inspections
    DRUM SKIRT/ HANGER PM
    Drum anchoring

    • ?Consider adding to PM
    • Support grout/concrete integrity
    • Alternative washer/shims

    Spring Cans/Hangers

    • Consider ANNUAL ‘mark’ program
    • Consider 5 yr tensioning program
    • Remember hot vs cold conditions

    CUTTING EQUIPMENT RELIABILITY
    –          Cutting deck walk-thrus
    –          Derrick hardware sitings!
    ELBOW STEAM
    –          Specifically, on dual inlet

You must be logged in to reply to this topic.

Refining Community