Levels of process definition

There are four different levels of process definition ... 

A hazard assessment using this level of process definition rarely provides an acceptable level of safety. 

A hazard assessment based on this level of process definition should adequately protect a process when it is operating normally. It does not, however, look at the consequences of common maloperations. 

CE criteria. Look for example at detail design of PDF. There is a need for close cooperation with suppliers of key components (2.1, 2.2, 2.3 and 2.5). For professional execution of detail design a high maturity level of communication is required. There is a request for all maturity levels of team formation and the first three levels of process definition (5.1, 5.2, 5.3). At process definition, organisafion and information system a top maturity level gains in importance for bigger teams... 

Definition-level evolution. At definition level, evolution is supported by version control at the granularity of packages (modular units of process definitions). 

Below, we discuss vertical consistency relationships between framework levels. As argued before, we assume consistency of process definitions w.r.t. the meta model. 

Evolution of process instances is inherent to dynamic task nets. The process meta model is designed such that planning and enactment may be interleaved seamlessly. Evolution of process definitions is performed at the level of packages. To maintain traceability, packages are submitted to version control. 

For example a process flow scheme for crude oil stabilisation might contain details of equipment, lines, valves, controls and mass and heat balance information where appropriate. This would be the typical level of detail used in the project definition and preliminary design phase described in Section 12.0. 

VOC Emissions Reduction/Ozone Attainment. Tide I of the 1990 Amendments continues the process of diminishing VOC emissions from all sources to reduce o2one concentrations. A compliance timetable by category has been estabUshed, which depends on the level of current o2one concentration. The definition of a major source also depends on the o2one nonattainment category ... 

The problem is defined during process development as information becomes available and decisions are made. Initially, the definition is limited, vague, and brief and economic analysis involves a high level of uncertainty. As the project evolves, the definition becomes more complete, more highly specific, and lengthier. At the same time, the economic assessment tends to exhibit less uncertainty. 

Section II introduces the formal framework for the definition anc description of process trends at all levels of detail qualitative, order-of magnitude, and analytic. A detour through the basic concepts of scale-spact filtering is necessary in order to see the connection between the concept o process trends and the classical material on signal analysis. Within th( framework of scale-space filtering we can then elucidate the notions o episode, scale, local filtering, structure of scale, distinguishec features, and others. 

The three historical approaches to certification mentioned above were recently expanded to identily seven modes that are used at NIST for value assignment for chemical composition (May et al. 2000). These seven modes and the resulting values are summarized in Table 3.13. The basic principles of value assignment remain unchanged however, these modes now provide a well-defined link between the process used for value assignment and the definition of the assigned value (i.e. certified, reference, or information value). The terms described above provide a clear indication of the level of confidence that NIST has in the accuracy of the assigned value. The definition of a certified value implies that NIST must be involved in the measurement process for the value to be classified as a NIST certified value (see modes 1-3 in Table 3.13). Thus, modes 4 and 7, which do not involve NIST measure-... 

Similar considerations were taken into account throughout the process of designing the study and committing the design to a protocol. In addition to analytical quality specifications, decisions were made regarding definitions of limits of detection and quantitation, levels of apparent residues at which confirmation was required, and how such confirmation would be achieved. All of these decisions were based on fulfilling the objectives of the study while operating within unavoidable time and resource constraints. 

By definition, learning is the acquisition of new information, whereas memory is the retention of acquired information. Driven by knowledge obtained by scientists before them, various disciples of neuroscience over the course of the past 100 years have learned more about various components of learning and memory, whether at the molecular level of synapses or at the systems level of brain circuitry. The concept of memory of mind has existed since the time of Aristotle. It is only during the past 50 years or so that scientists have begun to unravel some of the anatomical and cellular bases underlying such a complex mental process. 

The SCOR-model is a process reference model which is defined at different process levels. Besides the definition of the process, for each level indicators are proposed to allow to assess the performance of the process. In order to improve the process, best practices for the process elements are described which are based on the experience of the council members. 

The stoichiometry of the redox processes relevant for wastewater is important for balancing these processes. Therefore, procedures are needed for this purpose. A basic definition important for the determination of process stoichiometry is the oxidation level, OX, defined as follows an imaginary charge of an element for being stabilized in a molecule compared with a corresponding low stability of the single atom. 

---