Early Warning Indicators for Challenges in Underground Coal Storage

Early warning or leading indicators are discussed for unexpected incidences in case of large‐scale underground coal storage at a power plant. The experience is compared with above‐ground stockpiles for which established procedures are available but where access for prevention and mitigation are much easier. It is suggested that while the explicit organization, procedures, and the general safety systems aim to provide the targeted levels of performance for the storage, representing new technology without much precedence elsewhere in the world, the extensive experience and tacit knowledge from above‐ground open and closed storage systems can help to prepare for and to prevent unwanted incidents in the underground storage. This kind of experience has been also found useful for developing the leading or early warning indicators for underground storage. Examples are given on observed autoignition and freezing of coal in the storage silos, and on occupational hazards. Selection of the leading indicators needs to consider the specific features of the unique underground facility.     

FAMILY, COMMUNITY, AND LIFESTYLE: ADOLESCENT VICTIMIZATION IN HELSINKI

The proximate correlates of adolescent victimization are well documented in the literature. The purpose of our research is to examine the more fundamental sources of this outcome. Focusing on two basic social contexts—the family and the residential community—we develop a theoretical model and test it empirically against a multilevel data set on juveniles living in Helsinki. Consistent with our hypothesis, we find that the family context is an important determinant of violent victimization. Much of this effect is mediated by involvement in delinquent lifestyles. We also find support for the assumption that community context matters to the risk of victimization independently of the family context and individual-level risk factors. Our research underscores the need for a multilevel approach in explanations of violent victimization.