Process Safety and Disaster Prevention

Introduction to Process Safety and Disaster Prevention at Production Sites

At Mitsui Chemicals, we hold evacuation drills and emergency shutdown drills in the event of a major earthquake or tsunami. We also hold various disaster drills that include emergency activities such as firefighting, emergency call-outs and reporting as part of measures to respond to emergencies at Works. Going forward, we will conduct various drills in a systematic, ongoing manner in tandem with relevant government agencies and local communities.

Process Safety and Disaster Prevention Drills

At Mitsui Chemicals, we are continually improving our in-house disaster prevention capabilities. In addition to conducting disaster prevention drills, including emergency activities such as firefighting, emergency call-outs and reporting, we also carry out joint drills with municipal fire and police departments, validate emergency responses and take steps to improve any shortcomings. We formulate site-specific plans for each Works every year and conduct drills designed specifically for the operations carried out at each of our sites. We also organize full-scale comprehensive disaster prevention drills on a regular basis at each of our Works, including joint training with municipal fire departments and volunteer firefighting units, and training involving the local police. We work with municipal fire departments and nearby companies to organize joint disaster prevention drills as a form of reciprocal training between companies.
We aim to improve our disaster prevention readiness by conducting the following
drills at each site.
We introduce some examples of the drills below.

・ Ichihara Works

Based on the scenario that flammable liquid had leaked from equipment and ignited at night when the Works were closed, we jointly implemented the Works comprehensive disaster prevention drill with the municipal fire service. We confirmed that disaster prevention operations could be reliably carried out even at night when the Works are closed.

・ Osaka Works

Based on the scenario that flammable liquid had leaked from equipment and ignited, we jointly implemented the Works comprehensive disaster prevention drill with the municipal fire service. During training, we also work to improve our ability to respond to an emergency by having the manager of a manufacturing division other than that affected by the outbreak of the fire to observe the cooperation with municipal fire services.

・ Iwakuni-Ohtake Works

Based on the scenario that flammable liquids had leaked from the pipes connected to hazardous material tanks and ignited following an earthquake, we jointly implemented the Works comprehensive disaster prevention drill with the municipal fire service. We are repeating training in a number of areas, including emergency equipment shutdowns, evacuations to safe places, and the bringing of disaster situations under control.

・ Omuta Works

Based on the scenario that flammable liquid had leaked from a receiving pipe and ignited, we jointly implemented the Works comprehensive disaster prevention drill with the municipal fire service. The drill was also observed by police officers and officials from the municipal disaster prevention office, we verified cooperation with the relevant administrative bodies.


Disaster prevention activities at an emergency command post (Ichihara Works)


Training to prevent the spread of leaking gas (Osaka Works)


Water cannon drill by a volunteer firefighting unit (Iwakuni-Ohtake Works)


Explaining the facility entry route to members of a municipal fire department crew (Omuta Works)

Earthquake and Tsunami Drills

At Mitsui Chemicals, we conduct various drills to ensure that all staff are better prepared in the event of a major earthquake or tsunami, which are assumed in every site’s region. These include emergency shutdown drills and evacuation drills to evacuation areas. The following are a few select examples of the drills conducted at each production site.

・ Ichihara Works

Based on the scenario that an earthquake has struck and a massive tsunami warning has been issued for Tokyo Bay, we conducted emergency plant shutdown drills as well as evacuation drills.
Approximately 1,600 Company employees and employees from subcontractors took part in the drill. In addition to confirming the location of and routes to evacuation areas as well as the procedures for confirming the safety of employees at the evacuation area, we verified the criteria with regard to evacuations. By repeatedly undertaking evacuation drills, we are working to reduce the time needed to complete an evacuation.

・ Nagoya Works

We conducted a tsunami evacuation drill based on the scenario that a tsunami alarm had been issued following a massive earthquake in the Nankai Trough. We verified that the basic operations, such as the evacuation procedures to the site’s five evacuation areas and ascertaining the number of personnel at the evacuation area, could be reliably conducted.
We also conduct petrochemical complex comprehensive disaster prevention drills that are based on the scenario that a large-scale earthquake has struck the Nagoya Works, engage in integrated disaster prevention activities in conjunction with municipal disaster prevention-related organizations, and strengthen cooperation.

・ Osaka Works

In conjunction with the Osaka 8.8 Million Drill organized by the Osaka Prefecture, Osaka Works conducts evacuation drills covering the initial response at the time a tsunami warning associated with a Nankai Trough Earthquake is issued and evacuation to the tsunami evacuation area.
In the training drills, we work to raise employee awareness of disaster prevention, while verifying the training and improving earthquake and tsunami measures. In the training, the leader of the evacuation area also carries out the generator start-up test and checks the emergency stockpile.


A drill to confirm the safety of personnel at a tsunami evacuation area (Ichihara Works)


Water cannon drill by a volunteer firefighting unit (Nagoya Works)


A drill to confirm the safety of personnel at an earthquake evacuation area (Osaka Works)

Earthquake Readiness Drills in line with Business Continuity Plan

It is now coming on to six years since the nation was devastated by the Great East Japan Earthquake. Based on concerns of another major earthquake occurring directly beneath the Tokyo Metropolitan area or Nankai Trough, Mitsui Chemicals conducted business continuity plan (BCP) drills at its head office as well as Osaka and Ichihara Works on January 24, 2017.
The training was conducted on the assumption that an earthquake exceeding a magnitude of five in the Tokyo Metropolitan area during the morning hours when employees are commuting to work and substantial disruption to the city’s infrastructure. Designed to confirm effectiveness so that the divisions involved can communicate information in an assured manner in the event of an emergency, the plan called for the setting up and transfer of control to an emergency response headquarters by the afternoon of the same day as well as a satellite emergency response office at the Company’s Osaka Works to collate various pieces of information, including the status of damage.
In addition to putting in place the systems required to confirm the safety of employees as well as the basic procedures to collate information from each head office department, these training drills encompassed reporting and emergency support initiatives between the Head Office and Ichihara Works based on the scenario of a fire as a result of the earthquake.
In his summing up, President Tannowa recapped that “it is indispensable to confirm the basic operation and extremely important to keep constantly preparing. Without forgetting that it will happen that there are aspects from training that you will forget in an emergency situation, maintain an attitude of preparedness.” Going forward, Mitsui Chemicals will continue to put in place a response structure and systems that are capable of addressing any contingency.


General view of Business Continuity Plan training

For Second Consecutive Year Iwakuni-Ohtake Works’ Self-defense Disaster Prevention System Receives Outstanding Performance Award from Minister of Internal Affairs and Communications

Iwakuni-Ohtake Works’ self-defense disaster prevention system received an outstanding performance award from the Minister of Internal Affairs and Communications at the Fiscal 2016 Skill Contest of Self-defense Disaster Protection Systems for Petrochemical Complexes, etc. organized by the Ministry’s Fire and Disaster Management Agency.
This contest, which was first launched in fiscal 2014 with the aim of enhancing skills and morale, pits large-scale chemical plant elevated water cannon and foam concentrate transporter crews against each other in a number of operations, such as their safety management and the standard of their firefighting vehicles and equipment.
Judging the Iwakuni-Ohtake Works’ self-defense disaster prevention crew on its fire control technique and discipline, this award marked the second year in a row that the crew had received an outstanding performance award from the Minister of Internal Affairs and Communications. All employees will unite in striving for safer and more stable Works operations.


Self-defense disaster protection system


A general view of the skill contest