Preventive maintenance procedures

Monitoring by Electromechanical Instrumentation. According to basic engineering principles, no process can be conducted safely and effectively unless instantaneous information is available about its conditions. AH sterilizers are equipped with gauges, sensors (qv), and timers for the measurement of the various critical process parameters. More and more sterilizers are equipped with computerized control to eliminate the possibiUty of human error. However, electromechanical instmmentation is subject to random breakdowns or drifts from caUbrated settings and requires regular preventive maintenance procedures. 

As with any power equipment, gas turbines require a program of planned inspections with repair or replacement of damaged components. A properly designed and conducted inspection and preventive maintenance program can do much to increase the availability of gas turbines and reduce unscheduled maintenance. Inspections and preventive maintenance can be expensive, but not as costly as forced shutdowns. Nearly all manufacturers emphasize and describe preventive maintenance procedures to ensure the reliability of their machinery, and any maintenance program should be based on manufacturer s recommendations. Inspection and preventive maintenance procedures can be tailored to individual equipment application with references such as the manufacturer s instruction book, the operator s manual, and the preventive maintenance checklist. 

The frequency of operational qualification of a CE instrument depends on factors such as the manufacturer s recommended OQ interval, the required instrument performance, and the instrument s use. Note that preventive maintenance procedures such as lamp replacement may require repeating the qualification of the particular CE function [3]. The following sections describe the tests to perform and their associated limits that are intended to qualify a CE instrument for its general purpose. Troubleshooting tips for instruments that do not perform to the intended specifications are presented in Section 12.4. 

All critical instruments/systems, alarms and performance indicators must be maintained in accordance with established preventative maintenance procedures. Consider specialized preventative procedures for activities within this band... 

Thankfully, Microsoft has included a few pieces of software with their operating systems that allow us to perform preventative maintenance fairly easily. No fuss, no muss. The three preventative maintenance procedures we re going to discuss in this chapter are ... 

IQ Installation Qualification protocol OQ Operational Qualification protocol PQ Performance Qualification protocol PV Process Validation protocol PM Preventive Maintenance procedure... 

Based on manufacturers recommendations and experience, laboratories perform regular preventative maintenance procedures on the analyzers, with some additional maintenance procedures initiated in response to internal quality control performance or analyzer malfunctions. Calibration and quality control performances should always be checked after maintenance visits because replacement parts and disturbances of the optical and hydraulic systems sometimes adversely affect subsequent analyzer performance (sometimes called PMT—postmaintenance visit trauma). These procedures form part of good laboratory practice. 

For each system, procedures for preventative maintenance (including periodic calibration or revalidation) should be established. The objective of preventative maintenance is to check, calibrate or replace critical system components to prevent future failure and/or breakdown of the system, as this could have a negative effect on the quality of the product (or data). The following items need to be covered in the preventative maintenance procedure(s) ... 

Evaluate your current predictive and preventive maintenance procedures and include those that the operator can do as part of OEM. 

Indicators may be used to provide an objective, accurate measurement of the different services provided in the department. These can measure specific individual, team, and departmental performance parameters. Typical indicators might include simple tallies of the quantity or level of effort for each activity, productivity (quantity/effort), percentage of time spent performing each activity, percentage of scheduled IPMs (inspection and preventive maintenance procedures) completed within the scheduled period, mean time per job by activity, repair jobs not completed within 30 days, parts order for greater than 60 days, etc. 

Instrument loops, including alarm settings and interlock logic Operating procedures Operator training records Preventive maintenance procedures Isolation valve list Electrical one-line diagrams Blind lists Inventory levels Relief valve information. 

At many facdities, the practice is to operate the incineration system continuously until it breaks down because of equipment failures. This type of operation accelerates both bad performance and equipment deterioration rates. Repairs done after such breakdowns are usually far more extensive and costly than those performed during routine, preventive maintenance procedures. Also, items which are typically capable of lasting many years can fail in a fraction of that time if interrelated components are permitted to fail completely. 

It is important to set up preventive maintenance procedures on all equipment in the plant. Equipment is built to operate if proper maintenance is used. Processors should make regular machine checkups and maintenance a habit. A thoroughly implemented machine maintenance program will reduce downtime and operating costs as well as rejects of poor parts. Periodic machine checkups and regular maintenance should become a habit. 

According to the old adage, prevention is better than cure, maintenance and calibration of instruments is important since accurate readings are required to detect a problem. Proper corrective action must be taken as soon as possible otherwise, other equipment may be affected adversely. Preventive maintenance procedures are discussed in Section 4.4.12. In addition, the manufacturer s recommendations should be followed. 

Do you have a means for gauging the effectiveness of your preventive maintenance procedures ... 

Are preventive maintenance procedures adequate to detect and repair worn or defective brake system ... 

Poor preventive maintenance procedures Unsafe conditions... 

In order to achieve effective, safe, and reliable operation of all equipment in the inventory, the hospital uses interval-based inspections and preventive maintenance, corrective maintenance, or metered maintenance strategies. Model-specific strategies and preventive maintenance procedures developed for this equipment based on the risk stratification, the AHA Manual for Medical Equipment, manufacturer guidelines, and NFPA or ANSI standards. 

Kleppinger, F. (1987). A Preventive Maintenance Procedure for Fermenters. International Biotechnology Laboratory, 5 (3), 28. 

Give consideration to accessing electrical equipment for maintenance troubleshooting. This may involve maintenance bypass switches for certain interlocks. However, the machine should not be allowed to run production in the maintenance bypass mode. The equipment should be so designed to provide access to sensors, switches, and motors, etc., for preventive maintenance procedures performed on a regular basis. 

All of these improvements are incorporated into commercial instruments designed for nucleic acid chromatography. It is also important to follow preventive maintenance procedures and check filters for signs of colored deposits. Since double-stranded DNA is more susceptible to contamination, the use of precautions with respect to the method and the system is much more critical than when the... 

Reliability-centered maintenance (RCM) is a common apphcation of time-based scheduled preventive maintenance procedures, and of predictive maintenance technologies apphed to a specific application that allows for equipment life optimization. 

The inspection or preventive maintenance procedure form should have space where any additional action required can be indicated. When the... 

In order to maintain your hydraulic systems, you must have preventive maintenance procedures and you must have a good understanding and knowledge of Best Maintenance Practices for hydraulic systems. We will convey these practices to you. See Table 15.1. 

Preventive maintenance procedures must be a part of the PM job plan, which includes (see Figure 15.1) ... 

Preventive maintenance is the core support that a hydraulic system must have in order to maximi2e component life and reduce system failure. Preventive maintenance procedures that are properly written and followed properly will allow equipment to operate to its fuU potential and life cycle. Preventive maintenance allows a maintenance department to control a hydraulic system rather than the system controlling the maintenance department. We must control a hydraulic system by telling it when we will perform maintenance on it and how much money we will spend on the maintenance for the system. Most companies allow hydraulic systems to control the maintenance on them at a much higher cost. 

Ineffective machine guarding Defective materials and tools Improper or poor equipment design Using wrong tool or using tool improperly Poor preventive maintenance procedures... 

Inspect all bed frames, side rails, and mattresses as part of the preventive maintenance procedures. Ensure proper bed alignment and that no gap exists wide enough to entrap a patient. Never replace mattresses and side rails with dimensions different than the original equipment supplied by the manufacturer. Check bedside rails for proper installation using manufacturer s instructions. Establish safety rules and procedures for patients considered at high risk for entrapment. Use bedside rail protectors to close off open spaces which could lead to entrapment. Never use bedside rails as a patient protective restraint. Use of restraints requires frequent monitoring and compliance with... 

Management s responsibility is to established inspection and reporting procedures for drivers. It must assure comjjiance with state, federal and industry rules. Its job is to select drivers and provide them with adequate training for inspecting critical components and in orderto determine whether their vehiele is safe to be on the road. Management must enforce both driver inspection and maintenance policies. It must see to it that maintenance personnel are responsive to driver-reported deficiencies, and it must establish company standards for placing vehicles out of service. It must assine that preventive maintenance procedures adequately detect and repair worn or defective components. 

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