In order to respond to domestic and international demand for styrene monomer, Yamaguchi Operations is proactive in its efforts towards both expansion and streamlining of facilities.
Based on the belief that styrene monomer, a widely used industrial material, must be supplied in a stable manner and be of high quality so that it is eco-friendly, Yamaguchi Operations has acquired ISO9001 (Quality Management System) and ISO14001 (Environmental Management System) certifications in order to continue moving steadily towards the future.
Outline of Yamaguchi Operations
Location
13-3, Nishi-oki, Nishi-okinoyama, Ube City, Yamaguchi Prefecture 759-0205
Telephone number
0836-41-4154 (main)
Opened a business office
January 2004
Site area
298,000 m2
Progress of Yamaguchi Operations
Mitsui Chemicals, Inc.
October 1993
The construction of Yamaguchi Styrene Plant was completed (Mitsui Toatsu Chemicals, Inc.).
April 1994
The production of styrene monomer was commenced (240,000 t/year).
October 1995
The capacity was increased up to 260,000 t/year.
October 1996
The capacity was increased up to 284,000 t/year.
February 1997
Yamaguchi Styrene Plant was recognized as a certified business operator according to the High Pressure Gas Control Law.
August 1997
The certification as per the Industrial Safety and Health Act was obtained by Yamaguchi Styrene Plant after an inspection of the operations.
October 1997
Mitsui Toatsu Chemicals, Inc. and Mitsui Petrochemicalt Industries, Ltd. merged to form Mitsui Chemicals, Inc.
October 1999
The capacity was increased up to 294,000 t/year.
April 2000
Yamaguchi Styrene Plant became ISO 9002 certified (Switched over to ISO 9001 later).
June 2001
The certification for the Accredited Safety Inspection Executor under the High Pressure Gas Safety Act was obtained.
March 2003
Yamaguchi Styrene Plant became ISO 14001certified.
Taiyo Oil
December 2003
Taiyo Petrochemical Co., Ltd. acquired the Yamaguchi styrene plant. Shareholders of Taiyo Petrochemical Co., Ltd. (as of the end of March 2009)
January 2004
Yamaguchi Operations established at the request of Taiyo Petrochemical Co., Ltd. to operate Yamaguchi Styrene plant, and production of styrene monomer commenced.
June 2006
The certification for the Accredited Safety Inspection Executor under the High Pressure Gas Safety Act was continued.
