Inspection schedules

The selection of materials to be used in design dictates a basic understanding of the behavior of materials and the principles that govern such behavior. If proper design of suitable materials of construction is incorporated, the eqiiipment should deteriorate at a uniform and anticipated gradual rate, which will allow scheduled maintenance or replacement at regular inteivals. If localized forms of corrosion are characteristic of the combination of materials and environment, the materials engineer should still be able to predict the probable life of equipment, or devise an appropriate inspection schedule to preclude unexpected failures. The concepts of predictive, or at least preventive, maintenance are minimum requirements to proper materials selection. This approach to maintenance is certainly intended to minimize the possibility of unscheduled production shutdowns because of corrosion failures, with their attendant possible financial losses, hazard to personnel and equipment, and resultant environmental pollution. 

Inspection schedule in force in conformity with Pressure Vessel Regulations ... 

Inspection schedule It is not unusual for those who employ such firms to ask for an inspection schedule as suggested in (4) above, prior to making an appointment. Some large organisations lay down in general terms the numbers of inspectors and how they require the work to be inspected. However, the inspection schedule is not only the key to what may be expected from individual firms, it is also useful in summarising the inspector s duties and in informing the contractor as to how his work will be checked. 

The supervisor, manager, or engineer responsible should be reminded when a test or inspection is due, and senior managers should be informed if it has not been carried out by the due date. Test and inspection schedules should include guidance on the methods to be used and the features that should be inspected. For example, if the time of response is critical, it should be checked. 

Each QAU may exercise reasonable flexibihty and judgment to estabhsh an inspection schedule that it beheves is adequate to assure the integrity of the study. The FDA has indicated, however, that every study must be inspected in process at least once. Additional inspections may be randomly scheduled in such a way that over a series of studies each phase for each t5q)e of study is inspected. Any random sampling approach to inspections should be statistically based and should be described and justified in the QAU s SOPs. 

Any hose used to transfer a liquid, including refrigerants, that has an agency-reportable quantity listed for a spill. It does not include normal utility hoses such as steam, water, nitrogen, and air. It does not include hoses that are supplied by a contract carrier. It does not include hydraulic hoses or other such hoses that are permanently mounted as a part of equipment that has its own inspection schedule. Fire hoses are not included, but do have testing procedures for that particular service. NOTE that good judgment should be exercised with the use of all hoses, and any obvious defects should be addressed. 

A mainframe computer system has data on each SRV. Every other month, a computergenerated inspection schedule is sent to the second-level supervisor of each process unit. The report serves as a reminder of all SRV and conservation vent locations, recommended... 

Surface cracks in boiler tubes, creep damage in power plant components and precipitate analysis in components subjected to high temperature and stress have been successfully assessed by this technique and necessary further inspection scheduled, depending upon the severity of the observed defect. The following is an example of the type and severity of defects and the necessary action taken in the context of power plant operations. 

To use native or traditional breeds presents difficulties if any significant level of volume or regular supply is to be achieved. The establishment of parent flocks providing fertile hatching eggs on a regular supply basis will be required. These parent flocks will have to meet the necessary MAFF testing and inspection schedules. Traditional breeds of meat-type strains may prove acceptable for small-scale production by the self-supply producer, but otherwise impose severe limitations. 

Often, the manager sets up a periodic inspection schedule to aid in inventory control. In this modified visual inspection, the inventory manager routinely inspects designated inventory levels, e.g., on a daily or weekly basis, to determine whether an order should be placed. This routine examination of inventory minimizes the potential for stockouts and can potentially improve inventory control. This is a fixed-time reorder system, in which the quantity ordered might vary but the date of ordering remains the same. This is ideal for small to medium businesses for whom a prime vendor is the main supply source and the true volume of activity can be determined easily. 

Correction Hold pre-bid and pre-award meetings with vendors to develop reasonable schedules. Get firm commitments and spread work over several shops. Work together with contractor s project manager to develop expediting and inspection schedules for major equipment. 

Initial inspection focuses on the position of the Veres needle and, if necessary, the position is adjusted. To ensure correct examination, an established inspection schedule has proved useful. When such a schedule is applied as a matter of routine, important findings or additional information will not be overlooked. With extreme changes in position, vertigo, nausea, respiratory distress and a tendency to collapse may be witnessed, but these symptoms rapidly ease off once the body position has been normalized. Altogether, the examination procedure entails 4 different positions. In this way, optimal results can be obtained. 

As previously mentioned, QAU records of findings and problems and of corrective actions recommended and taken are exempt from routine the FDA inspection. To compensate for this lack of routine inspectional authority, the FDA has access to the QAU s written procedures. The FDA may review QAU written procedures to judge the adequacy of inspection schedules and to determine whether or not systems are in place for communicating inspection findings to management personnel. The FDA may also request facility... 

Khan, F. I., Haddara, M. M. (2003). Risk-based maintenance (RBM) A quantitative approach for maintenance/inspection scheduling and planning. Journal of Loss Prevention in the Process Industries, 16, 561-573. 

Over a total period of operation the secondary circuit equipment performance has been sufficiently reliable. The planned scope of work in accordance with the maintenance and in-service metal inspection schedules has been fulfilled on the secondary circuit components and pipelines. During 1995 and 1996 the sodium feeding units of all the cold traps have been repaired. 

Fire-fighting equipment can be portable, mobile, or fixed, and may be manual or automatic. Because of the prime importance of operational fire-fighting equipment, strict equipment inspection schedules are adhered to and recorded. Defective equipment is immediately replaced. Inspection of fire and safety equipment is normally carried out by process employees as part of their scheduled routines. Firefighting equipment that would be on their checklist include ... 

In-service inspections of nuclear power plants should be carried out at intervals whose length should be chosen on the basis of conservative assumptions, to ensure that any deterioration of the most exposed component is detected before it can lead to failure. The inspection schedule should provide for repetition of the inspections over the operating lifetime of the nuclear power plant. The inspection programme may involve regular inspection intervals or, alternatively, the inspection intervals may be varied over the operating lifetime of the plant to improve the correlation between inspection intervals and the probabilities and characteristics of component failures. The intervals for evenly distributed inspections may be chosen to be from a few years to about ten years for the variably distributed inspections, these... 

IfATfj < Af no action is performed, the deterioration level of the system is low enough to wait for the next inspection schedule. 

Figure 1. Logical scheme of the risk based inspection scheduling. The fuzzy engine is highlighted in gray.

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