National board

National Board of Fire Underwriters, Chem. Eng. Nem25, 1594 (1947). 

According to the National Board of Fire Underwriters, activated carbons normally used for water treatment pose no dust explosion ha2ard and are not subject to spontaneous combustion when confined to bags, dmms, or storage bins (64). However, activated carbon bums when sufficient heat is appbed the ignition point varies between about 300 and 600°C (65). 

Inspection Authority The National Board of Boiler and Pressure Vessel Inspectors is composed of the chief inspectors of states and municipalities in the United States and Canadian provinces which have made any pari of the Boiler and Pressure Vessel Code a legal requirement. This board promotes uniform enforcement of boiler and pressure-vessel rules. One of the board s imporiant activities is providing examinations for, and commissioning of, inspectors. Inspeciors so qualified and employed by an insurance company state, municipality, or Canadian province may inspect a pressure vessel and permit it to be stamped ASME—NB (National Board). An inspector employed by a vessel user may authorize the use of only the ASME stamp. The ASME Code Committee authorizes fabricators to use the various ASME stamps. The stamps, however, may be apphed to a vessel only with the approval of the inspector. 

The National Board Inspection Code, published by the National Board of Boiler and Pressure Vessel Inspectors, Columbus, Ohio, is helpful. Any repair, however, is acceptable if it is made in accordance with the rules of the Pressure Vessel Code. 

The mean time to failure of various instrumentation and equipment parts would be known from the manufacturer s data or the employer s experience with the parts, which then influence inspection and testing frequency and associated procedures. Also, applicable codes and standards—such as the National Board Inspection Code, or those from the American Society for Testing and Materials, American Petroleum Institute, National Fire Protection Association, American National Standards Institute, American Society of Mechanical Engineers, and other groups—provide information to help establish an effective testing and inspection frequency, as well as appropriate methodologies. 

Many of the building codes used initially in North America were imported from Europe by the early settlers. In 1630, the City of Boston building code stated No man shall build his chimney with wood nor cover his roof with thatch. In 1865, the City of New Orleans adopted an ordinance requiring the inspection of buildings for public use. In 1905 the National Board of Fire Undeiwriters published the first national building code in the United States, the Recommended National Building Code. 

Define plant areas handling hazardous and lethal materials and set rules for design considerations, such as ventilation, explosion walls, etc. Flammable storage materials may require enclosed dikes, foam systems and the like. Refer to National Board of Fire Underwriters or specific insurance company to coordinate recommended protection. Attaway has details on many points to consider. 

Some manufacturers National Board Certified Tests will have different values for some of their valves. Be sure to obtain the manufacturer s certified coefficient for the valve you select. 

Refs 1) Anon, The Rose burg, Oregon, Fire, Explosion and Conflagration , Report by the National Board of Fire Underwriters, NY (1959) 2) Anon, C EN 38 (15), 35-6 (1960) 3) S. 

NBIC. National Board Inspection Code. ANSI/NB-23. National Board of Boiler and Pressure Vessel Inspectors, USA, 1998. 

Our investigation, within Terrance s (2000) classification of action research, was collaborative action research. The LON project team existed from three groups of partners Seven teachers from primary schools, six of whom conducted interventions in their schools the adviser for chemistry from the National Board of Education for Slovenia and three chemical education researchers from the Department of Chemical Education and Informatics, University of Ljubljana. 

The investigation was conducted in the form of collaborative action research in order to bring together the strengths of chemistiy teachers, the advisor for chemistry from The National Board of Education for Slovenia, and chemical education researchers from University of Ljubljana, and at the same time to enable a direct transfer of estabhshed research findings into teaching practice. According to teachers opinion, in comparison with their experiences in previous years, the most important achievements of the LON approach were ... 

Railings L.O., Ringertz O., Silverstolpe L. Emerfeldt F. (1966) Microbiological contamination of medicinal preparations. 1965 Report to the Swedish National Board of Health. Acta Pharm Suecica, 3,219-228. 

Acknowledgment. These investigations are part of a research program on the environmental degradation of polymers supported by the Swedish National Board for Technical Developments (SIU), which we gratefully acknowledge. 

This work was supported by grants from The Swedish National Board for Laboratory Animals (97-46), The Swedish Foundation for Research without Animal Experiments, The Swedish Research Council (9478), The Wallenberg Foundation, AstraZeneca, Bristol-Myers Squibb and GlaxoSmithKline. 

A designer of relief systems must be familiar with governmental codes, industrial standards, and insurance requirements. This is particularly important because local government standards may vary. Codes of particular interest are published by the American Society of Mechanical Engineers, the American Petroleum Institute, and the National Board of Fire Underwriters. Specific references have already been cited. It is recommended that relief designers carefully consider all codes and, where feasible, select the one that is most suited to the particular installation. 

Posch, M., Reinds, G. J., De Vries, W. (1993). SMART - A Simulation Model for Acidification s Regional Trends Model description and user manual. Mimeograph Series of the National Board of Waters and the Environment 477, Helsinki, 43 pp. 

I want to thank my friends and collaborators over the years. Bo Persson and Stig Andersson, for critically reading this manuscript. The work has been supported by the Swedish National Board for Technical Development and the Swedish National Science Research Council. 

---