Equipment system drawing

The FMECA table should be concise, complete, and well organized. This table should identify equipment and relate it to a system drawing or location. This is to prevent confusion when similar equipment is used in different locations. One of tlie limitations of FMECA is tliat the table must include ALL failure modes for each piece of equipment and effects of each failure along witli tlie associated criticality ranking. Table 17.5.3 shows a sample chart tliat can be completed for tlie FMECA table. 

Termination drawings are used to alloeate eables to partieular sets of terminals inside panels (e.g., field panels, system eabinets, marshaling raeks), jimetion boxes, and plant equipment. Each drawing should contain the following for each core ... 

An Operating and Maintenance Manual is required for every oxy/fuel combustion equipment system per NFPA 86 (sect. 1-5.6). As a minimum, the manual must include oxygen and fuel safety literature appropriate approved drawings of the... 

Water for injection Steam distribution Compressed air distribution Nitrogen distribution Drainage system Personnel flow Materials flow Electrical drawings Equipment installation drawings... 

Gas samples are taken by equipment that draws the gas stream into empty vials or through tubes containing some absorbent that concentrates the sample. Many systems analyse the sample in situ using colour indicators, gas chromatographs, or solid state analysers. Other gas samples are transported in sealed containers for analysis, but they are rarely under pressure. 

The importance of maintaining a history of the changes made needs emphasis. It is important that all modifications be recorded in drawings, prints, and the appropriate files. They become the historical records that have to be reviewed and considered in the decision making, later on, when changes in other equipment, systems, or methods are to be made. They also should be available when safety audits are made. 

Various types of information are needed to perform FMECA effechvely. In particular, the design-related information needed for the FMECA includes system schematics, design descriptions, operating specifications and limitations, equipment/part drawings, interface specifications, functional block diagrams, field service data, reliability data, configuration management-related data, effects of environment on item under consideration, and relevant specifications (i.e., company, customer, etc.) [3]. 

Normal HAZOP documentation requirements consist of Process Flow Diagrams, P IDs or EFDs, site layout drawings, equipment detail drawings, supplemented as necessary with electrical one-line diagrams, operating instructions and trip system definitions. 

Based on the results from the initial experiments ultrasonic equipment and transducers for the scanning system were selected. Also a measuring chamber with transducer fixtures was constructed and manufactured for measurement on the tubes directly on the drawing bench. 

Preliminary Process Flowsheet. This will show major equipment and lines, preliminary equipment details (vessel diameter, number of trays, pump flow and driver horsepower, etc.), major instrumentation, and, it is hoped, have a material balance at the bottom of each drawing with flows keyed to a numbering system on the diagram. The process flowsheets should cover both the process and utility sides of the plant. 

Potential accident scenarios and flood locations were identified from plant drawings and tlic RHR system fault tree that identifies the equipment and support needed for RHR system operation. The equipment location was correlated with flood areas with consideration for plant features which may impede or divert the flow. The flood scenarios identify the effect on systems required to prevent core damage. Quantification accounts for the rate of rise of the flood relative to the critical level in each specific plant area. The time available for any recovery action is calculated from tiic volume and the flow rate. 

The standard requires the supplier to have the appropriate resources and equipment (when specified in the contract) to utilize computer-aided product design, engineering, and analysis that is compatible with the customer s and subcontractor systems. It is also required that the supplier be able to use numerical design and drawing data, by computer-aided methods for the manufacture of production tooling and prototypes. 

If no satisfactory process drawings exist you can identify major sections of the process (e.g., heat exchanger trains, refrigeration circuits, distillation equipment, reactor systems) that probably represent equipment that can be isolated from the rest of the process. 

The main objective of the In-Plant Reliability Data System (IPRDS) was to develop a comprehensive and component-specific data base for PRA and other component reliability-related statistical analysis. Data base personnel visited selected plants and copied all the plant maintenance wor)c requests. They also gathered plant equipment lists and plant drawings and in some cases interviewed plant personnel for Information on component populations and duty cycles. Subsequently, the maintenance records were screened to separate out the cases of corrective maintenance applying to particular components these were reviewed to determine such things as failure modes, severity, and, if possible, failure cause. The data from these reports were encoded into a computerized data base. 

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