Lubrication Program Development and Maintenance
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Questions and Answers

What type of cost should grease and other supplies used from bulk be classified as?

  • Overhead costs (correct)
  • Direct costs
  • Variable costs
  • Indirect costs

    • What is one of the advantages of doing preventive maintenance?

  • Choosing the most convenient time for production (correct)
  • Increasing the demand for emergency repairs
  • Reducing the maintenance workload
  • Increasing the availability of maintenance parts

    • What is the primary concern of scheduling in preventive maintenance?

  • Minimizing equipment downtime
  • Balancing demand and supply (correct)
  • Reducing the maintenance workload
  • Increasing the availability of craftspeople

    • What is the primary purpose of equipment records in preventive maintenance?

    <p>To provide information for preventive maintenance</p> Signup and view all the answers

    What information should be included in equipment records for preventive maintenance?

    <p>All of the above, plus additional information</p> Signup and view all the answers

    What is the benefit of planning for inspections and preventive activities in advance?

    <p>All of the above</p> Signup and view all the answers

    What is the primary purpose of establishing realistic calibration intervals?

    <p>To ensure the use of calibration procedures for all equipment and standards</p> Signup and view all the answers

    What is the main benefit of maintaining formal records for calibration labelling?

    <p>To ensure proper controls and tracking of equipment</p> Signup and view all the answers

    What is considered when estimating the time required for inspection and preventive maintenance?

    <p>Equipment manufacturers' recommendations and national standards</p> Signup and view all the answers

    What is the primary purpose of coordinating the calibration system with all users?

    <p>To facilitate communication and collaboration among users</p> Signup and view all the answers

    What is included in the record system for every instrument?

    <p>The history of use, accuracy, present location, and calibration interval</p> Signup and view all the answers

    How are cost estimates typically developed?

    <p>By multiplying the hours required for inspection and preventive maintenance by the labor cost</p> Signup and view all the answers

    What is the primary purpose of estimating labor cost?

    <p>To plan for the resources required for inspection and preventive maintenance</p> Signup and view all the answers

    How are material cost estimates typically developed?

    <p>By multiplying the quantity of each item planned by the cost of the item in inventory</p> Signup and view all the answers

    What happens to the seawater after it is heated?

    <p>It is sprayed over tubes carrying steam from the boiler.</p> Signup and view all the answers

    What is the function of the demister?

    <p>To allow the vapor to rise and flow into the centrifugal compressor.</p> Signup and view all the answers

    How does the centrifugal compressor work?

    <p>It uses a motor or engine to rotate an impeller that increases the pressure of the water vapor.</p> Signup and view all the answers

    What is the purpose of the safety shutdown system?

    <p>To sense trouble and automatically shut down the unit.</p> Signup and view all the answers

    What is scale made up of?

    <p>Dissolved minerals in the water that do not evaporate.</p> Signup and view all the answers

    What is permeability a measure of?

    <p>The ease with which molecules flow through a substance.</p> Signup and view all the answers

    What is the purpose of the built-in system to clean the permeators?

    <p>To flush the unit with fresh water after shutdown.</p> Signup and view all the answers

    What is the consequence of leaving seawater in the unit for a long period?

    <p>It is very corrosive to the unit's stainless steel parts.</p> Signup and view all the answers

    What is the primary consideration when structuring a maintenance program?

    <p>Prioritizing and optimizing financial and personnel resources</p> Signup and view all the answers

    What is the main focus of daily maintenance of a Kelly spinner?

    <p>Greasing all lube points every trip</p> Signup and view all the answers

    What is the purpose of the heat exchanger in a Vapor Compression Evaporator?

    <p>To absorb heat from the waste water and transmit it to the entering seawater</p> Signup and view all the answers

    How often should the rig's weight indicator be calibrated?

    <p>After each move or whenever there is a reason to suspect the reading is not accurate</p> Signup and view all the answers

    What is the typical maintenance requirement for indicators and sensors?

    <p>Periodic inspection and replacement of worn parts</p> Signup and view all the answers

    What is the primary function of the lubricating oil pump in a Vapor Compression Evaporator?

    <p>To lubricate the pumps and compressor</p> Signup and view all the answers

    What is the purpose of keeping hoses straight and checking connections in a Kelly spinner?

    <p>To prevent blockage of air or hydraulic flow</p> Signup and view all the answers

    What is the typical production capacity of a Vapor Compression Evaporator?

    <p>4,800 to 16,800 gal of purified water per day</p> Signup and view all the answers

    What is one of the primary functions of lubrication?

    <p>To prevent wear and corrosion</p> Signup and view all the answers

    What is the main objective of calibration?

    <p>To keep measurement and control instruments within specified limits</p> Signup and view all the answers

    Who can be a source of lubrication specifications?

    <p>Equipment manufacturers, lubricant vendors, other equipment users, and individuals with experience</p> Signup and view all the answers

    What is the purpose of a calibration system?

    <p>To provide for the prevention of tool inaccuracy through prompt detection of deficiencies and timely application of corrective action</p> Signup and view all the answers

    What is the recommended frequency for calibrating ohmmeters?

    <p>Once a year</p> Signup and view all the answers

    What is the step involved in developing a lubrication program?

    <p>Identifying every piece of equipment that requires lubrication</p> Signup and view all the answers

    What is the purpose of establishing storage and handling procedures in a lubrication program?

    <p>To prevent contamination of lubricants</p> Signup and view all the answers

    What is the recommended course of action when equipment fails due to lubrication issues?

    <p>Analyze the failure and initiate necessary corrective actions</p> Signup and view all the answers

    Study Notes

    Lubrication

    • Separate moving materials to prevent wear, scoring, and seizure
    • Reduce heat, keep out contaminants, protect against corrosion, and wash away worn materials
    • Develop lubrication specifications from equipment manufacturers, lubricant vendors, other equipment users, and individuals' own experience

    Lubrication Program Development

    • Identify every piece of equipment that requires lubrication
    • Ensure each piece of equipment is uniquely identified and records are complete
    • Determine locations on each piece of equipment that need to be lubricated
    • Identify the lubricant to be used and the best method of application
    • Establish the frequency or interval of lubrication
    • Determine if equipment can be safely lubricated while operating or if it must be shut down
    • Decide who should be responsible for human involvement and standardize lubrication methods
    • Package the above elements into a lubrication program
    • Establish storage and handling procedures
    • Evaluate new lubricants to take advantage of state-of-the-art technology
    • Analyze failures involving lubrication and initiate necessary corrective actions

    Calibration

    • Calibration is a special form of preventive maintenance that keeps measurement and control instruments within specified limits
    • A 'standard' must be used to calibrate equipment
    • Ohmmeters should be calibrated at least once a year and before further use if subjected to sudden shock or stress
    • The purpose of a calibration system is to provide for the prevention of tool inaccuracy through prompt detection of deficiencies and timely application of corrective action
    • Establish realistic calibration intervals, list of all measurement standards, and environmental conditions for calibration
    • Ensure the use of calibration procedures for all equipment and standards
    • Coordinate the calibration system with all users
    • Frequently check equipment by periodic system or cross-checks to detect damage, inoperative instruments, erratic readings, and other performance-degrading factors
    • Provide for timely and positive correction action
    • Establish decals, reject tags, and records for calibration labeling
    • Maintain formal records to ensure proper controls

    Estimating Time

    • Inspection or preventive maintenance is a standardized procedure with little variation
    • Tasks and time required can be accurately estimated considering resources such as equipment manufacturers' recommendations, national standards, industrial engineering time-and-motion studies, and historical experience

    Estimating Labor Cost

    • Cost estimates follow from time estimates by multiplying the hours required by the labor rate

    Estimating Materials

    • Most parts and materials used for preventive maintenance are well-known and can be identified in advance
    • Quantity of each item planned should be multiplied by the cost of the item in inventory
    • Consumables such as transmission oil should be enumerated as direct costs, but grease and other supplies used from bulk should be included in overhead costs

    Scheduling

    • One of the advantages of doing preventive maintenance is planning for inspections and preventive activities in advance
    • Scheduling is primarily concerned with balancing demand and supply
    • Demand comes from the equipment's need for preventive maintenance, and supply is the availability of equipment, craftspeople, and materials

    Record Keeping

    • The foundation records for preventive maintenance are the equipment files
    • Essential items include equipment identification number, equipment name, equipment product/group/class, location, use meter reading, preventive maintenance interval(s), use per day, last preventive maintenance due, next preventive maintenance due, cycle time for preventive maintenance, crafts required, number of persons, and time for each
    • Parts required and maintenance records should be maintained

    Maintenance of Auxiliary Systems

    • Daily maintenance of a Kelly spinner consists of checking the lubrication system and greasing all lube points every trip
    • Specific Kelly spinner maintenance recommendations should be consulted
    • Problems that may arise when using the Kelly spinner often have to do with blockage of air or hydraulic flow
    • Keep hoses straight and check connections to make sure they are airtight
    • Replace valves and seals as necessary

    Maintenance and Calibration of Indicators and Sensors

    • Indicators and sensors do not require much maintenance
    • Periodically check all fittings and hoses for tightness and damage and replace worn or damaged parts
    • Calibration is done by manufacturers and does not require adjustments in the field
    • Weight indicators are an exception and should be calibrated after each move or whenever there is a reason to suspect that the reading is not accurate

    Maintenance of Vapor Compression Evaporators

    • Uses electric motor to power pumps, compressor, and lubricating oil pump
    • Size of the unit can produce 4,800 to 16,800 gal of purified water per day
    • Has a heat exchanger, titanium plate that absorbs heat from waste water and transmits it to the entering seawater
    • Requires a great deal of maintenance, including scale removal and flushing the unit

    Maintenance of Reverse Osmosis Watermakers

    • Filtration system for removing unwanted contaminants from water
    • Uses old and fairly simply technology
    • Permeability is a measure of the ease with which molecules flow through a substance
    • Membranes are semipermeable, allowing small molecules to flow through but not large ones
    • Built-in system to clean the permeators
    • Consist of mixing tank, filter, piping, and valves that flush fresh water through the pump, piping, and chambers after shutdown
    • Pumps need inspection and lubrication

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    Related Documents

    DRIL 23001 Unit A - Maintenance PDF

    Description

    Learn about the importance of lubrication in preventing wear and tear, and how to develop a lubrication program. Understand the primary functions and sources of lubrication specifications.

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