Journal of Japan Society for Safety Engineering
Online ISSN : 2424-0656
Print ISSN : 0570-4480
ISSN-L : 0570-4480
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Volume 52, Issue 5
JOURNAL OF JAPAN SOCIETY FOR SAFETY ENGINEERING_2013_5
Displaying 1-14 of 14 articles from this issue
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PROPOSAL FOR SAFETY
REVIEW
ORIGINAL PAPER
  • Fatigue Damage Assessment of Piping Systems having Wall Thinning under Seismic Loadby Parametric Numerical Analysis
    Mami Nakagaki and Tadahiro Shibutani, Izumi Nakamura, Akihito Otani
    2013 Volume 52 Issue 5 Pages 300-307
    Published: October 15, 2013
    Released on J-STAGE: July 30, 2016
    DOIhttps://doi.org/10.18943/safety.52.5_300
    JOURNAL FREE ACCESS
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    This study presents parametric analysis for fatigue assessment and dynamic responses of three-dimensional wallthinned piping systems subjected to seismic loadings. Validated finite element models were constructed based on the wallthinned piping system reported in the previous paper. Fatigue lives for in-plane and out-of-plane bending modes are assessed with the effect of ratchet deformations. The obtained results are summarized as follows:(i) Stiffness of piping and number of strain cycles decrease with the increase in the fraction of wall thinning, (ii) Internal pressure affects the increase in ratchet strain and the fatigue lives decrease, (iii) The fatigue life of local wall thinning is not always safe compared with full circumferential thinning.

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  • Enhancing Capability of Detecting Safety-related Problems through the Potential Incident Reporting System
    Toshiya Akasaka and Shozo Tanuma, Yusaku Okada
    2013 Volume 52 Issue 5 Pages 308-317
    Published: October 15, 2013
    Released on J-STAGE: July 30, 2016
    DOIhttps://doi.org/10.18943/safety.52.5_308
    JOURNAL FREE ACCESS
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    Organizations which want to see their workers initiate activities on their own that can reduce the likelihood of accidents often have some form of potential incident reporting system in place with the hope of vitalizing such workers-initiated activities in various ways. For field workers, it is important to have the capability of detecting such problems that make the work there harder and hence human errors more likely. In this paper, we investigated a method to allow the potential incident reporting system to be put into practice in the way that it could enhance workerʼs capability of detecting such problems. The developed method could give workers, as feedback of their reporting potential incidents, information that could provide new point of views with which workers could detect a broader range of problems. At the same time, the method successfully avoided the need for any major change in an existing reporting system, making the resulting new reporting system a practical choice.

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TECHNICAL REPORT
ACCIDENT ANALYSIS
SAFETY MANAGEMENT AND PROVISIONS IN THE CORPORATION
SALOON
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