Control rating code

An element of the facility system safety effort not found in MIL-STD-882B and not typical of other programs is the control rating code (CRC). 

Figure 11-3 Control rating code for CRC matrix. (Source U.S. Army Facility System...

The facility system safety risk assessment process works such that if the initial risk assessment produces a RAC of 1 or 2, some type of control must be applied. After this control is applied, a second risk assessment or controlled RAC is determined. First, the control rating code is evaluated to ensure that the CRC rules have been met and then to ensure that the controlled RAC is 3 or 4. If the CRC rules are met and the controlled RAC is 3 or 4, the corrective action is taken and the risk has been reduced to an acceptable level. However, if the CRC rules have not been met and/or the RAC remains at 1 or 2, other controls must be applied and the reassessment cycle is repeated. If other controls are not available, then risk acceptance decisions must be made by the appropriate level of management, and risk acceptance decisions must be documented (Fig. 11-4). 

The initial risk categorization process and the use of control rating codes are not addressed in MIL-STD-882B and are believed to be unique to the facility system safety effort. 

Control rating code is a generally applicable system safety-based procedure used to produce consistent safety effectiveness ratings of candidate actions intended to control hazards found during analysis... 

Control rating code can be applied when here are many hazard control options available. 

Figure 13.4 illustrates three aspects of the basal ganglia network. First, a reciprocal control exists between GPe and STN. Second the SNc acts not only on the striatum but also on the cortex, the STN and the GPi. Finally the location of the STN at the intersection between vertical and horizontal feedback loops is crucial. Reference [50] concludes that the BG can no longer be considered as a unidirectional linear system that transfers information based solely on a firing-rate code and must rather be seen as a highly organized network with operational characteristics that simulate a nonlinear dynamical system (Fig. 13.4). 

A nonprofit association of insurance companies that provides services for participating companies. It provides statistical, actuarial, and underwriting information for numerous affiliated insurance companies and more than a dozen lines of insurance. It maintains one of the largest private databases in the world for insurance premiums and losses paid. Included in these lines is liability, automobile, boiler and machinery, homeowners, farm, and commercial fire insurance. ISO is a voluntary, nonprofit, unincorporated association of insurers. Previous to 1971, the functions performed by ISO were undertaken by various insurance organizations in different states. ISO gathers data that are used to establish rates for fire protection policies for residential and commercial properties. ISO developed the municipal grading schedule, which is commonly used to establish a basis of insurance rates for municipalities. It is an evaluation of the fire protection features of cities and towns based on seven factors climatic conditions, water supply, fire department, fire service communications, fire safety control, building codes, and a survey report. 

AppHcation of an adhesion-promoting paint before metal spraying improves the coating. Color-coded paints, which indicate compatibiHty with specific plastics, can be appHed at 20 times the rate of grit blasting, typically at 0.025-mm dry film thickness. The main test and control method is cross-hatch adhesion. Among the most common plastics coated with such paints are polycarbonate, poly(phenylene ether), polystyrene, ABS, poly(vinyl chloride), polyethylene, polyester, and polyetherimide. 

Furthermore, should free radicals be present, the vinyl groups would much more rapidly polymerise depleting the emulsion droplets of monomer, providing the control required for a particular particle size. The composition of the solution thus determines not only the phase behaviour, but the rate of polymerisation and the particle size. If, the organism has in its genetic code, the abihty to synthesise the monomer, it presumably has... 

Computer codes usually calculate only the thermodynamically most stable configuration of a system. Modifications can simulate nonequilibrium, but there are limitations on the extent to which codes can be manipulated to simulate processes that are kinetically (rate) controlled the slow reaction rates in the deep-well environment compared with groundwater movement (i.e., failure to attain local homogeneous or heterogeneous reversibility within a meter or so of the injection site) create particular problems. 

---