Product-specific requirement

Application. A company has received a very large shipment of rivets. One product specification required that no more than 2 percent of the rivets have diameters greater than 14.28 mm. Any rivet with a diameter greater than this would be classified as defective. A random sample of 600 was selected and... 

The product specification requires 11 670 kg/h of 60% (wt.) nitric acid solution, excluding dissolved nitrogen oxides. This specification must be achieved while restricting the level of tail-gas emissions to below 1000 ppm of nitrogen oxides. This acid product requires approximately 2340 kg/h of deionized make-up water. 

Emphasis is on the nser requirements, not on the method of implementation, and should therefore not be product specific. Requirements shonld be defined such that individual requirements can be identified (with acceptance criteria) for traceability through development and testing. Diagrams should be used to enhance readability. 

The product-specific requirements and instructions are rather to be found in documents such as manufacturing methods for the particular products, operating instructions for particular machines and plant, cleaning and disinfection instructions for particular equipment and plant etc. ... 

The selection of process units and individual processes was determined by projected product specifications, required range of products and the overriding necessity to minimize residue yield. 

Low-speed convective mixers with complex impeller arrangements present cleaning problems and the whole class of convective mixers potentially have lubricated surfaces in contact with the mixture. Closed-circuit hopper mixers and fluidized mixers are not generally suitable if frequent changes product specification require a complete flushing of the circuit, and gas-circulated systems often have the problem of lubricant entrainment in the gas stream. 

Product-Specific Requirements (PSR) is the phase of life-cycle assessment involving the compilation and quantification of inputs and outputs, for a given product system throughout its life-cycle. Additionally, specific technical data information will be a part of PSR or EPD (Enviromnental Prodnct Declaration). 

Product Specific Requirements polyvinyl chloride polyunsaturated fatty acid polyurethane... 

If a product specification requires the system reliability of 99.0 % for mission duration of 200 h, then the MTBF can be calculated as follows ... 

The multiobjective optimization problem involves the minimization of the kappa number,/i, and the maximization of the pulp yield, The decision variables include the temperature of the liquor and chips fed in the digester, T, and the inlet white liquor flow rate, Qt. The constraint of the process limits the value of the Kappa number in a certain range, in order to meet the product specification requirements ... 

The comparison of the minimum attainable TAC for these three systems, as well as the acetic acid dehydration system without any entrainer, is shown in Table 9.13. From the table, one can observe that the no-entrainer system has the highest TAC and the isobutyl acetate system is most favorable for this feed composition and product specification requirements. The TAC for the isobutyl acetate system is only about 55% of the no-entrainer system, which shows that a large saving can be made by using the isobutyl acetate system. Notice that this finding is in general agreement with the industrial applications. (See patents by Costantini et al. and Parten and Ure ). The above two patents also found isobutyl acetate as a favorable entrainer for the separation of acetic acid and water. Another earher patent by Othmer found w-propyl acetate to be useful as an entrainer for this system. The patent by Mitsui Petrochemical Industries found n-butyl acetate to be... 

Environmental product declaration —Product specific requirements —How to calculate and report environmental performance of particular products —GEN is an association of international eco-labeling organizations —Provides information on various organizations... 

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