Checking Decimeter Intervals of the Trimble Levelling Rods’ Bar-Code Scale

Russian regulation documents permit using telescopic rods made of duralumin for III and IV class leveling. The authors provided information from the leveling instruction on the need to perform metrological testing the rods before work and during the measurements. The article focuses on two most important checkouts

A Research on Characteristics of Customer Value Formation Based on Markov Chain

A Markov chain can be fully determined by the statistical properties of its initial stateand the transfer probability matrix. According to this clue, the authors make a metrological testing model on the customer value and its formation characteristics, and then find that the customer value metrological testing model on Markov chain can well illustrate the characteristics of a corporate customers’ value.

Research on the Application of Operation Characteristic Curve in the Sampling Inspection for Foods in Prepackages with Fixed Content

New enterprises for products in prepackages with fixed content always use sampling inspection to make sure the accuracy of the net quantity of their products according to JJF 1070-2005 “Rules of Metrological Testing for Net Quantity of Products in Prepackages with Fixed Content”, but this sampling inspection plan is expensive. The theoretical basis of the variable sampling plan in JJF 1070 was analyzed first. Then based on ISO 3951-1, the variable acceptance standard, a new sampling plan for products in prepackages with fixed content was developed, and it’s operation characteristic curve was drawn. Taking one company in Jinhua city of Zhejiang province of China as an example, a comparative analysis for the practical application of these two sampling plans was carried out. Under the premise that the sampling plan’s discrimination power was unchanged, the results showed that the acceptance effects of two sampling plans waere almost the same, while the reduction of sample size for the new one was 44%, the inspection time and cost were all reduced.

Environmental Remediation and Using a New Sorting and Free Release System for Contaminated Soil at NPP A1 Site, Slovakia

Environmental remediation at NPP A1 site is even presently a continual process of removing the contamination from the ground or auxuliary objects within the NPP A-1 site with accidentally shut down reactor. This paper mainly deal with monitoring, sorting out and disposal of large volumes of removed contaminated soil stored temporarily until now at the site which is necessary for enhancement of environmental radiation situation at the site. It was also one of the topic of the Decommissioning Project of NPP A1, Slovakia, - Phase No I, lasted from 1999 to 2008. Within the project, attention was paid to development of technical tools for handling with and monitoring of large volume of contaminated soil, as well. Besides short description of contaminated lands at the site, sources of their contamination and to date known inventory, details of a pilot contaminated soil sorting facility developed and tested recently within the Decommissioning project will be described and discussed in the papper. The paper topics include description of and uncertainty analysis results for the pilot soil sorting system based on the Canberra-Packard pilot conveyer belt monitor with a pair of 1.5 inch LaBr scintilation detectors and integrated electronic belt scale. In addition experiences learned during the metrological testing and operational trial will be summarised. MDA for Cs-137 of this system is 140 Bq/kg for 30 kg and 50 Bq/kg for 300 kg parts of soil at 500 Bq/kg of 40K and 0.15 mikroGy/h.