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Hirohiko IWAHARA, Wataru SHIRAKI, Shuichi HASEGAWA, Hitoshi INOMO, Kyo ...
2017 Volume 73 Issue 2 Pages
I_7-I_15
Published: 2017
Released on J-STAGE: February 08, 2018
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In recent years, natural disasters such as earthquakes, floods, landslides and disasters occur frequently. In the Kumamoto earthquake that occurred on April 14 and 16, 2016, the maximum seismic intensity of 7 was recorded, and in the Tottori ken Chubu Earthquake that occurred on 21st October 2016, the maximum seismic intensity was recorded at a little less than 6, causing extensive damage It was.
In these natural disasters that occur repeatedly, it is not possible to take advantage of past experiences of disaster, and disaster response of the basic municipalities often does not function sufficiently. For this reason, it is requested again to improve local disaster prevention ability by self-help and mutual assistance of residents independent of the administration.
In this paper, we will examine the real situation of the disaster preventionists who are the part of the local disaster prevention ability, and prepare for the disaster prevention of university students who are indifferent to the disaster prevention seen from there, and describe the problem and measures of disaster prevention consciousness.
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Junya HASHIMOTO, Yukito KOBAYASHI, Yuji KAMIKUBO, Saki KAWAGUCHI, Koji ...
2017 Volume 73 Issue 2 Pages
I_17-I_25
Published: 2017
Released on J-STAGE: February 08, 2018
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Last year's Kumamoto earthquakes forced dormitory students to take refuge life in gymnasium for two weeks at Yatsushiro campus of NIT Kumamoto college. Students seriously recognized the importance of mutual help and self-help, and they recognized the need for improvement of their action plans based on time-line disaster prevention.
This study aims to evaluate the students' efforts in terms of organizational operation and plan formulation of disaster prevention. The most significant aspect is that most of the activities is initiated by the students, who have given training, formulated plan and conduct continuous improvements in PDCA cycle. This students-centric activities in group life serves as a basis to create disaster prevention system in terms of both mutual help and self-help.
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Sosuke INOUE, Susumu NAKANO
2017 Volume 73 Issue 2 Pages
I_27-I_34
Published: 2017
Released on J-STAGE: February 08, 2018
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About the disaster response of the local construction company in the 2016 Kumamoto earthquake, we conducted a interview survey for Kumamoto Prefecture Construction Association and senior executives. As a result, there was no problem regarding the cooperation between the organizations, but the requests for dispatch from local governments was delayed due to reasons such as the fact that the affairs of local government officials had not been handed over at the beginning of the new fiscal year. And the disaster information sharing system did not work due to interrupt communication line.
In this research, especially focusing on sharing of disaster information, the way of command order and labor accidents, we examined an effective cooperation system between municipalities and local construction companies in disaster restoration.
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Takahisa YAMADA
2017 Volume 73 Issue 2 Pages
I_35-I_42
Published: 2017
Released on J-STAGE: February 08, 2018
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Regarding a person deemed to have sufficient knowledge and skill in Article 40 Paragraph 3 of the Ordinance on Industrial Safety and Health, it is said that education concerning the said matters can be omitted, but does the person actually have sufficient knowledge and skill? In particular, a review was carried out based on actual cases of foremen, and operations chiefs for tasks such as scaffolding assembly, relating to the falling accidents which are one of the three major accidents. In the results, the types of foreman work exhibiting an increasing trend were: a) Self-inspection, b) Actual work, and c) Work instruction and supervision. Regarding the foreman appointment ratio and rate of receiving education for improving capabilities, based on Article 40 Paragraph 3 of the Ordinance on Industrial Safety and Health, it was found that foremen who exceeded 10% every year and were selected based on Paragraph 3 did not have enough between knowledge and techniques relating to RA. In addition, the rate of receiving education to improve capabilities was equivalent to zero in the case for foremen, and in the case of operations chiefs for tasks such as scaffold assembly, it was on a level which made it possible to discover persons who had received education from the previous fiscal year, and thus it will likely be necessary to promote measures to encourage undergoing education to improve capabilities. Therefore, to take measures to further reduce risks, there will likely be a need to amend Article 14 and Article 60 of the Industrial Safety and Health Act, and Article 40 Paragraph 3 of the Ordinance on Industrial Safety and Health, and thereby amend to rules on skills training for operations chiefs for tasks such as scaffolding assembly, to suit the actual conditions of work.
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Kazuya ITOH, Hiroki TAKAHASHI, Tomohito HORI
2017 Volume 73 Issue 2 Pages
I_43-I_51
Published: 2017
Released on J-STAGE: February 08, 2018
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A large amount of re-construction work has been still ongoing due to the Great East Japan Earthquake and other large scale earthquakes. Accordingly, there are some problems such as a shortage of workers and a hike in prices of construction materials. Under these circumstances, even inexperienced newcomers have to work in the re-construction sites frequently and have caused many accidents resulting in injury and death. Therefore, it is urgent and essential to train those who are engaged in the construction work. In this paper, comic is suggested as a teaching material, where various kinds of labor accident cases are shown. In addition, in order to evaluate the effectiveness of comic, questionnaire survey was carried out among the lecturers who instruct the occupational safety and health to the workers involved in construction work. As a result, the lecturers highly evaluated the effectiveness of the comic which was intelligible to anyone. On the other hand, it was shown that the selection in labor accident cases is needed for the purpose of labor safety and health education.
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Takashi MORIKAWA, Takeshi HARA, Hiromitsu TADA
2017 Volume 73 Issue 2 Pages
I_53-I_59
Published: 2017
Released on J-STAGE: February 08, 2018
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This paper introduces 4(four) i-Construction cases which practically implemented in Singapore's MRT construction projects. 1) Biometric authentication system with RFID for site gates in/out management. 2) RFID turnstile gate for confined space entry management on site. 3) Site surveillance by IP cameras and broadcasting to website/smartphone. 4) Realtime web broadcasting of instrumentation readings by Instrumentation Contractor. Instrumentation readings are open to the Employer, the Contractor and the Consultants anytime anywhere. SMS alarming system is also implemented when the reading reaches alert/work suspension level. These implementations and enhanced safety conscious of all the personel involved in projects . Observation study discovered how this enhancement contributed to the prevention of accidents on sites through national statistics of workplace safety and health from 2006 to 2016 .
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Kazutaka TAGUCHI, Masakatsu BANBA, Katsumi NISHIKAWA
2017 Volume 73 Issue 2 Pages
I_61-I_68
Published: 2017
Released on J-STAGE: February 08, 2018
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For the permanent countermeasure of the illegal waste material dumping, excavation of high-concentration contaminated parts is carried out to a depth of 16m and the work is done in narrow places surrounded by working girders, intermediate piles and the earth support. This mechanical excavation work is carried out by placing hydraulic clamshell on the working gantry and mini-backhoe on under the gantry. At the time of work, the workers have to wear protective gear and mask to prevent inhaling toxic gas. So the work is carried out under bad condition since “Signal sounds are hard to hear, the vision becomes very narrow and the workers are difficult to move.” which increases the risk to generate serious accident by heavy equipment collision. In order to eliminate the risk, this article activity is introduced, in examining prevention measure against heavy equipment collision, three types of approaching level to the heavy equipment are considered as candidate and the detection level and the detection range are measured by demonstration experiments at the actual site. This activity is aimed at “Achieving zero-accidents against collision with heavy equipment and workers” under special construction condition by selecting and operating highly reliable system.
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Kazuya YADA, Kazunori HAMADA, Hiroyuki ARAI, Yukikatsu HARAYAMA, Taro ...
2017 Volume 73 Issue 2 Pages
I_69-I_74
Published: 2017
Released on J-STAGE: February 08, 2018
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At the Kabagawa dam site under construction, there are at most 440 of damp truckS for transport of aggregate in a day via ordinary road and community road for local people. Efficient truck operation management and prevention of human error are important to prevent traffic accident.
“VasMap” is adapted as operation management system. All of damp trucks for transport of aggregate had a tablet terminal with GPS. Position and velocity of each truck were obtained, and driving condition was controlled in real time at the office of the Kabagawa dam. Main traffic points were selected based on hazard map, which was made by on-site inspection and hearing survey with local people. At main traffic points, there were attention attracting announcing for drivers automatically and it was utilized as countermove of traffic accident.
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Kenji KATO
2017 Volume 73 Issue 2 Pages
I_75-I_82
Published: 2017
Released on J-STAGE: February 08, 2018
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This study aim to grasp the change of evacuation awareness during disasters by using Individual communication and disaster information distribution using broadcast communication fusion technology. The analisis employs an consciouseness data of the civilian committee members collected in Tshima, Tokyo. It was analyzed using a sturactural equation model for the various factors related to determind the evacuation preparation awareness and disaster evacuation consciousness. The Individual communication has the effect of suppressing the loweriong of the envacuation awareness at the time of a disaster, and the effct was found to be great for men. The result of raising awareness of escape was obtained by implementing information distribution such as disaster using broadcast communication fusion technology.
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Norimitsu KOIKE, Eiji NAKAMURA, Ayumi HATTORI, Masatoshi MORITA, Kazua ...
2017 Volume 73 Issue 2 Pages
I_83-I_90
Published: 2017
Released on J-STAGE: February 08, 2018
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It is especially difficult to inform visitors who are not acquainted with the risks of the places near the water under a tsunami attack regarding evacuation routes and shelters. Resorts near the water must have the ability to keep visitors safe in a tsunami attack. Through participation observation during evacuation drills at Utsumi Beach, Aichi, Japan, we discuss how to smoothly evacuate visitors and residents from the beach to the tsunami shelter. The visitor's awareness of the risk was addressed through a questionnaire survey using a tablet type computer. Some improvements must be made in the process. As an example, the location of the tsunami shelter had to be changed. We point out the significance of conducting the evacuation drills on a continuous basis.
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Mitihiro YOSHIDA, Hiroki SHIMODA, Toshikazu IKEMOTO, Hiromichi YAMAGUC ...
2017 Volume 73 Issue 2 Pages
I_91-I_96
Published: 2017
Released on J-STAGE: February 08, 2018
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We proposed a new system “Emergency Mutual Support System (EMSS)” to support mutual evacuation during disaster. EMSS was proposed as a mobile application in which everyone could use everywhere easily. When EMSS also automatically start during emergency, we collect positional information of the person from the mobile units mutually. The positional data and moving speed can be shared in each mobile unit, and evacuation behavior of the person can be comprehended. The mobile user can select a suitable evacuation route depending on the situation.
In this study, the implementation experiment of pairing using EMSS was planed (carried out, performed) in a small area.
An evacuation experiment was also carried out using an existing application for friend searching.
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Chikako ISOUCHI, Takuji SANGAWA, Wataru SHIRAKI, Yoshiyuki KANEDA, Kaz ...
2017 Volume 73 Issue 2 Pages
I_97-I_105
Published: 2017
Released on J-STAGE: February 08, 2018
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In this paper, the research clarified by questionnaire survey the current effort of Business Continuity Plan by companies and impact of the Kumamoto Earthquake that occurred in April 2016. As a result, states of BCP development improved but then states of BCP contents is not enough yet. It became clear again the necessity of enlightenment about the basic idea of BCP.
The survey was a continuous survey in 2008 and 2012, and compared with national trends, the effects of the Great East Japan Earthquake that occurred in March 2011.
The goal of this paper is to examine the influence of the earthquake disaster type caused by trench type or inland which will be damage to industry , the necessity of pre-restoration each industry.
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Soichi SUZUKI, Norimitsu KOIKE, Masatoshi MORITA
2017 Volume 73 Issue 2 Pages
I_107-I_116
Published: 2017
Released on J-STAGE: February 08, 2018
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Recently, at the scene of emergency medical transportation, the spread of aeromedical service by helicopter is progressing. Utilization of aeromedical service is effective in the situation of shredded land transportation network due to tsunami flooding and landslides after the earthquake. Therefore, in this study, we analyzed the situation of rendezvous point placement, which is indispensable for utilization of aeromedical service in disaster medical transportation after the earthquake in Chita Peninsula, Aichi Prefecture by using accessibility and influential zone population, and we examined rendezvous point placement where the existing open space for expanding aeromedical transportation system after the earthquake. In addition, we proposed the method using road network voronoi division in calculation process of the influential zone population, and compare it with voronoi division which is a common method in influential zone analysis. As the result, we pointed out that the road network voronoi division which can take account of the real road network is appropriate in Chita Peninsula.
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Takuro NAKAGAWA, Yuichiro KANEKO, Ko-hei SUZUKI
2017 Volume 73 Issue 2 Pages
I_117-I_125
Published: 2017
Released on J-STAGE: February 08, 2018
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Transportation services between the Tokyo metropolitan area and the Tohoku area decreased greatly due to the Tohoku Shinkansen service due to the Great East Japan Earthquake occurred at March 2011, but mobility was able to be secured as aviation and express buses increased. In this way, it is important to ensure the substitution of traffic modes so that the functions of the transport network are not lost due to the earthquake. In this study, the influence on the railway user when the Tokaido Shinkansen was interrupted due to the occurrence of the Nankai Trough Earthquake in the future was analyzed and consciousness survey was conducted for users of the Tokaido Shinkansen to grasp the behavior when the Shinkansen was suspended for a long time due to the earthquake disaster. As a result, at the time of the earthquake disaster, it was found that nearly half of the people visited the affected areas for confirmation of safety of employees, supply of goods, visitation of business partners and business support by using aviation.
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Keiichi YASUDA, Wataru SHIRAKI, Hitoshi INOMO
2017 Volume 73 Issue 2 Pages
I_127-I_138
Published: 2017
Released on J-STAGE: February 08, 2018
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In the infrastructure maintenance plan, emphasis is mainly placed on safety aspects. For this reason, a maintenance plan has been drafted that defines countermeasures and scheduled implementation schedule, paying attention to preventing the development of damage directly linked to the deterioration of safety.
However, it is considered that various aspects must be considered in order to operate the maintenance plan for a long time. In this research, we will try to evaluate from two aspects concerning the continuous operation of the infrastructure maintenance plan. One is vulnerability, which is defined as the degree of exposure to risk. The other is resilience, which is evaluated by the ability to recover the ability to cope and the ability to resist. We tried to evaluate ongoing operation in the case of local governments. Furthermore, it shows that weak point can be easily grasped by evaluating by two different axes from both aspects of vulnerability and resilience.
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Junko KANAI, Manabu MIYOSHI, Hiroshi AKI, Susumu NAKANO
2017 Volume 73 Issue 2 Pages
I_139-I_146
Published: 2017
Released on J-STAGE: February 08, 2018
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According to the case of three elderly welfare facilities damaged by the flood, they were able to evacuate their users quickly because they had obtained evacuation information from the administration and set evacuation criteria in advance. According to a questionnaire survey on the evacuation at the time of flood targeting elderly welfare facilities in Shikoku, few facilities have set evacuation criteria. For the elderly welfare facilities damaged by the Kanto-Tohoku heavy rain disaster in 2015, we propose a method to use the calculated depth of inundation at the upstream side as evacuation criteria.
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Eiji SATO, Hitoshi INOMO, Wataru SHIRAKI, Chikako ISOUCHI, Hirohiko IW ...
2017 Volume 73 Issue 2 Pages
I_147-I_157
Published: 2017
Released on J-STAGE: February 08, 2018
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In the field of water-related disasters, we have prepared for disasters mainly focusing on the idea of disaster prevention through hard maintenance and water-saving activities. However in recent years, large-scale flood damage caused by climate change has occurred throughout the country. In order to respond to such disasters beyond facilities abilities, crisis management measures with wide-area regional collaboration focusing on the response after the disaster are required.
In this research, we introduce the idea of disaster resilience and propose a district continuity plan (DCP) formulation method to increase effectiveness crisis management measures in the region. Specifically, based on a case study of crisis management measures by the "Kagawa type DCP review method" in the Doki River basin in Kagawa Prefecture, we proposed making a comprehensive organization and a framework for regional collaboration, and an effective bottom-up DCP review process mainly with local residents and regional administration. As a result, regional cooperation and relationships of trust between relevant organizations concerning disaster prevention, and regional administrations, and local residents were strengthened. And the foundation for regional voluntary activities was established. In addition, as a result of DCP review, action policies and action plans were formulated. In the future DCP practice, a role of mutual assistance (regional collaboration) is expected.
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Eiji SATO, Hitoshi INOMO, Wataru SHIRAKI, Chikako ISOUCHI, Hirohiko IW ...
2017 Volume 73 Issue 2 Pages
I_159-I_169
Published: 2017
Released on J-STAGE: February 08, 2018
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In recent years, large-scale water-related disasters have occurred frequently throughout the country. However, the clumsiness for disasters and the delay of a disaster prevention action and the evacuation action of local administrations are pointed out. In order to promote disaster prevention and reduction measures assuming large-scale water disasters being generated, the Ministry of Land, Infrastructure and Transport is pursuing nationwide deployment of “Timeline”. This “Timeline” includes many timelines mainly based on relevant organizations concerning disaster prevention, and focusing on the disaster prevention actions before disasters.
In this research, we aim to make the residents timeline with which they do “early security evacuation” and “early life rebuilding / emergency restoration” independently and cooperatively. In order to make the residents timeline, we planned and held a workshop with the cooperation of local residents and regional administration, assuming large-scale river flooding with the embankment breakdown of the Doki River. At the workshop, disaster prevention, reduction and shrinkage actions before and after the river flood were discussed.
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Keiichi YASUDA, Wataru SHIRAKI, Hitoshi INOMO
2017 Volume 73 Issue 2 Pages
I_171-I_180
Published: 2017
Released on J-STAGE: February 08, 2018
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An operation of Infrastructure maintenance plan is decades and long term. However, continuous implementation is not guaranteed. Moreover, due to various factors, there is a possibility of interruption, suspension, postponement etc. of repair plan. The maintenance plan sets the LCC minimization scenario on the continuous operation. However, there is a risk that LCC will increase if postponement or interruption of repair or renovation lasts for a long time. Therefore, in this research, it is focused on factors that affect the continuous operation of the infrastructure maintenance plan. We will attempt to evaluate both vulnerability and resilience. When evaluating, there is an advantage that it is easy to understand the current situation by displaying it in the performance matrix, and the evaluation after the improvement can be advanced in the dialogue form. An example of biaxial matrix evaluation is shown for the maintenance plan released by local governments.
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Toshikazu IKEMOTO, Masakatsu MIYAJIMA, Takao HASHIMOTO, Susumu NAKAJIM ...
2017 Volume 73 Issue 2 Pages
I_181-I_187
Published: 2017
Released on J-STAGE: February 08, 2018
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A series of shaking test with 1/7 scaled model was conducted by corporation of JR Co. Ltd.. DDA (Discontinuous deformation Analysis) simulations were carried out in two patterns, in which one was countermeasure with piles of stone wall, gravel and backfill soil, and the other is no-countermeasure wall.
The residual patterns of displacement in the DDA simulations are in good agreement with the results of shaking tests. Additionally, the DDA simulation approximately predicts the starting point and the beginning time of collapse inside the retaining wall. We could confirm that the DDA was a powerful tool and is complementally applicable to consider seismic design of masonry retaining walls.
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Yasutoshi NOMURA, Saki MURAO, Yukihiro SAKAGUCHI, Hitoshi FURUTA
2017 Volume 73 Issue 2 Pages
I_189-I_198
Published: 2017
Released on J-STAGE: February 08, 2018
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Recently, assessing the integrity of the structures accurately and reliably has become extremely important in various fields in order to increase operational lifetime and improve safety. Detecting cracks in evaluating the soundness of the structure is particularly important as it is one of the major factors causing deterioration and destruction of the structure.
For the purpose of constructing an inspection system against spaces where an inspector is difficult to enter, we attempt in this study to develop a system that can detect crack in real time from the images of the whole structure photographed by UAV or web camera, by deep convolution neural network.
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Shintaro NEGORO, Yasufumi YUASA, Susumu NAKANO, Yoshinobu ASANO
2017 Volume 73 Issue 2 Pages
I_199-I_206
Published: 2017
Released on J-STAGE: February 08, 2018
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We reviewed the BCP significantly because the formulated BCP was not effective at the time of the Great East Japan Earthquake. At first, we changed the formulation system of BCP from top down to bottom up, and shared knowledge of the BCP through desk exercises. Next, we made it possible to visualize various information such as data of customer and employee and hazard information such as tsunami et al. using GIS. We created a system that utilizes it as a tool for providing information to customers in the normal situation and uses it for checking the damage situation of customers in the event of a disaster. We developed a dedicated application for using GIS using mobile tablet when going out. As a result, we were able to improve both the level of sales activities in normal times and the emergency response behavior in the event of a disaster.
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Yasufumi YUASA, Susumu NAKANO, Masahiro OYAMA
2017 Volume 73 Issue 2 Pages
I_207-I_212
Published: 2017
Released on J-STAGE: February 08, 2018
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In the Kumamoto earthquake, several medical institutions were damaged, they became difficult to continue medical treatment, and they were necessary to transfer the inpatient to another medical institutions. We conducted interview surveys of the staff of the affected medical institution and clarified the current status and problems of business continuity at medical institutions in Kumamoto prefecture. In business continuity plan of a medical institution, it is necessary to consider hardware measures, software measures, skill measures, business continuity strategies and support systems. Regional alliances are required to push forward these measures.
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Yasufumi YUASA, Susumu NAKANO, Keisuke SHIMADA, Yuki TANAKA
2017 Volume 73 Issue 2 Pages
I_213-I_218
Published: 2017
Released on J-STAGE: February 08, 2018
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The state of formulation of municipal business continuity plan is improving according to government guidelines. However, training and review based on business continuity plan are not sufficient. We created self-check sheets for municipal officials to check their own business continuity plans, extract issues, and it easy to review. Begining in 2015, municipality business continuity plan workshop utilizing this self-check sheet is held for municipalities in Tokushima prefecture. From the experience of the 2016 Kumamoto earthquakes, it is pointed out the need to clarify the both systems for support and for receiving support in the business continuity plan. Therefore, we present a framework of a new self-check sheet considering both systems, and discuss future issues.
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