Corporate Profile
Company Name

Marubeni Utility Services, Ltd.

Established

January 21, 1972

Head Office

2nd floor, Palace Side Bldg. 1-1 Hitotsubashi 1- chome, Chiyoda-ku, Tokyo, 100 - 0003 Japan
TEL：+81-3 - 3214 -8481

President and CEO

Takuma Nagase

Paid-in Capital¥300,000,000

Number of Employees

63 (As of April 1, 2024)

Businesses

Provision of information services and reports related to nuclear power generation.
Supply of steam turbines for nuclear power stations and ECCS steam turbines,
as well as nuclear related equipment and services.
Supply of imported radioisotopes.

URL

https://www.mus.co.jp/en/Office
Fukuoka Office

Denki Bldg. North 12F, 1- 82 Watanabe-dori, 2-chome, Chuo-ku, Fukuoka, 810-0004 Japan

Erlangen Office

Am Weichselgarten 30 Erlangen -Tennenlohe 91058 Germany

Map
Jimbocho Station(Tokyo Metro Hanzomon Line)

Yasukuni-dori Ave.
Jimbocho Station

Iwanami HallSHUEISHA Inc.

(Toei Shinjuku/Mita Line)(Shueisha Bldg).

NOchanomizu

Suidobashi

Ichigaya

Iwamoto-cho

Shogakukan Inc.

(Shogakukan Bldg).

Gakushikaikan

Kyoritsu
Women’s University(Gakushi Kaikan Hall)

Nihonbashi
Hongo-dori Ave.

Josui Kaikan(Josui Kaikan Hall)

Ikebukuro

P○WestEntrance

PalacesideBuilding
Exit 1b

Hitotubashi Entrance

Shinjuku/Shibuya

East Entrance

Hakusan-dori Ave.

Hitotsu-bashi

Iidabashi
Takebashi Station, Tozai Line

Nishiki-bash
Inner Circular Route
KKR Hotel Tokyo
Marubeni
Japan Bank forCorporationInternational
Cooperation
Uchibori-dori Ave.

KandJapan
MeteorologicalAgency

EdobashiouchMarunouchi

runExit C2
Otemachi Station,
Chiyoda Line• One minute’s walk from the Palace Side Arcade entrance,
exit 1b of Takebashi Station on the Tokyo Metro Tozai Line.
• Eight minutes’ walk from exit C2 of Otemachi Station on
the Tokyo Metro Chiyoda Line.
• Six minutes’ walk from Jimbocho Station on the Tokyo MetroHanzomon Line.
• Six minutes’ walk from Jimbocho Station on the Toei Subway

Tokyo Fire
Department
Mai

The Imperial Palacei

Kandabashi
Ramp
Tokyo Regional
Taxation Bureau

Hirakawa-mon(gate)

abash[ACCESS GUIDE]

Shinjuku Line and Toei Subway Mita Line.
• By car : Get off at the Kandabashi exit on the Tokyo Metropolitan
Expressway.

M e s s a g e

Corporate ProﬁleWe offer advanced technologies from all over the world.

Corporate ProﬁleMarubeni Utility Services, Ltd. (MUS) is a unique and highly regarded trading
house, providing our customers with innovative, high value technologies,products and services.
Marubeni Group, the first recipient of a nuclear export certificate issued by
01 | Message

the United States Atomic Energy Commission (AEC), participated in the
project of building JRR-1 (Japan Research Reactor No.1), Japan’ s firstnuclear reactor, which began operation in 1957. Our continued participation
has made us a major contributor to the nuclear industry for more than sixtyyears.
Leveraging our long-standing experience and global network, we support ourcustomers in smoothly introducing technologies that meet the demands ofthe times. Also, Marubeni Group’ s comprehensive strength enables us tobuild up, manage and implement all phases of large and complex global
projects.
In recent years, we have expanded our business domain to include: 1)
Radioisotopes, irradiation equipment and accelerators for medical
diagnosis/sterilization and research purpose; 2) Cyber security systems; 3)
Simulators; and 4) Software for performance monitoring and plant
optimization. These are just a few of the sophisticated, high value products
offered by MUS.
We remain committed to contributing to the safe and robust growth of society
by motivating employees, satisfying customers and improving environmental
consciousness.

Takuma Nagase
President and CEOMessage| 02

B a c k g r o u n d
Corporate ProﬁleCompeting against — and sometimes working
with—plant manufacturers to offer excellent
technologies and productsTechnology-Oriented
The equipment and software products from the European and US
companies for which we serve as a sales agent and distributor are
manufactured using advanced and distinctive techniques that have

Marubeni Utility Services, Ltd. was established in 1998 through the merger of three corporations of03 | Background

Corporate Proﬁlebeen nurtured through many years of research and operational

Marubeni Corporation’s nuclear group. As a Marubeni group trading house specializing in the nuclear

experience. We bring these advanced and deeply specialized

field, we offer nuclear- related products and services, excluding nuclear fuel, mainly to electric power

technologies and mechanisms into Japan and explain them to ourcompanies and heavy electric plant manufacturers in Japan. We supply overseas products with highcustomers in plain language to address their technical demands andtechnical expertise to domestic power companies, and we are renowned as a unique trading housequestions immediately. We have an overwhelming presence andthat has a wealth of technical knowledge in nuclear-related business. We compete against—and fromenjoy an excellent reputation in the industry as a trading house thattime to time work with—domestic plant manufacturers who have strong relationships with electricuses its rich technical know-how to provide solutions for customers

power companies. We sometimes even provide plant manufacturers with superior technologies andrather than simply selling and delivering products.

products —a unique business practice.

TechnicalStrength

Expertise

Information
Gathering

Marubeni Utility Services,Ltd.
Trust from Customers& Proven Track Record

Development ofNuclear Powerin JapanWork Site - Oriented
The equipment and software products that we supply are used in many power stations and otherplants where safe operation is an essential requirement. When installing equipment or software
products in facilities, we work with engineers from the foreign manufacturer to ensure closecommunication with the customer. This way we can overcome cultural differences or conflicts ofinterest between the manufacturer and the customer, thus enabling such work to proceed safely andefficiently. Based on results obtained through working as a team in the field, real-time interpersonalconnections we have had, and valuable experience that could not have been acquired anywhere
else, we firmly believe that we can find a solution to any problem at the work site.

Background| 04

Importing superior technologies
Issues such as safety seismic measures, environmental assessments andconvincing the local population of its safety mean it takes a long time to construct a
new nuclear power plant. Therefore, it is important to extend the operation of existing

Corporate Proﬁlenuclear power plants to ensure a stable power supply.

Supporting the safe and efficient
operation of nuclear power plants

To address the challenges of advanced operation, we replace existing power-plantcomponents produced by domestic plant manufacturers with foreign products thathave excellent technical capabilities, thus securing durability and improving
efficiency. We combine software products proven in Europe and the US in an optimal

As a CO2 -free energy source, nuclear power is expected to continuemanner to identify failure locations, and apply predictive maintenance techniques

its important position as the backbone of our electric power supply.

through diagnostics to contribute to the operational safety and improved efficiency

We support the safe operation of nuclear power plants by providingof power plants.

advanced foreign products and software that are the result of many05 | Function

years’ accumulated experience. And by improving efficiency andFunction

power uprating within the framework of the rated power licensed by
the government, we help plants to improve their capacity factor andcontribute to prevention of global warming.

Assessment ofthe situation
Identifying problems /challenges

F u n c t i o n

Research of information
related to state of art
technologies from overseas

Proposal of optimal solution

Importing and offering products proven in Europe
and the US

Proposal Capabilities
We have been continually dealing with state-of-theart technologies and products from all over the world.

Provision of know-how

This means that through our long-term business

Installation of equipment

contacts and close relationships developed withMaintenance and operational support services

customers at work sites, we can identify issues andidentify which kinds of techniques and products are
required at a site at a given time. We can thus
propose the optimal solution, using our global

Safe Operation

Efficient Operation

Cost Reduction

Reduction ofCO2 Emissions

Corporate Proﬁlenetwork to combine the best products and systems
from domestic and foreign manufacturers. We see
the situation from our customers’ viewpoint and work
closely with them to facilitate the introduction ofhigh-value-added technologies and build a win-win
relationship.

| 06

SoftwareB u s i n e s s
Corporate ProﬁleWe offer a range of software based on unique technology, such as for
improving operational efficiency, for monitoring the system status topredict failures, and so on. These software products were developed
through many years of operational experience at nuclear power

C a t e g o r ystations and other plants mainly in the US.
We distribute management software products that are new to Japan

Corporate Proﬁleand also offer training support services for their operation. Suchproducts include offline thermal efficiency diagnostic software (PEPSE),
online thermal efficiency monitoring and diagnosis software (PMAX),

Material and Services
07 | Business Category

We import a wide range of materials from othercountries and distribute them to nuclear power
plants, nuclear research institutes, and the industry.
As the agent for Nordion of Canada, the top supplierof the radioactive isotope cobalt-60, we supply thismaterial, which is used for sterilizing medicalequipment, for medical research, and for productdevelopment, to sterilization service companies,
research institutes, and medical equipment
manufacturers.
We also import and sell gamma-ray irradiators using
cesium-137 as a radiation source (Gammacell)manufactured by Best Theratronics Ltd. of Canada.
Our other services include the import /export ofmaterials for domestic and foreign companies andresearch institutes. Materials we handle areradioactive isotopes and stable isotopes, including
molybdenum, americium, californium, curium,zirconium, boric acid, helium-3, lithium-7, andtungsten. We also provide support for the transport

Hardware

Cyber security

We import and distribute equipment and hardware from Europe and the US,

Threats to cyber security have been anand also support our customers during installation. As the Japanese agent

ever-increasing problem in recent years. To

for the world’s largest nuclear reactor maker Framatome of France, Germany andtake measures against them, we import andthe US, we provide repairs/servicing including equipment for nuclear power

deliver cyber security gateways developed

plants in Japan. In addition, we market and deliver high and low- pressure

by the Israel-based Waterfall ® Security

steam turbines and condensers manufactured by Siemens Energy AG of Germany.

Solutions Ltd.

We also distribute a wide variety of equipment including ultrasonic flow meters
produced by US-based Sensia, LLC, emergency core cooling system (ECCS)
strainers made by PCI, and loose parts monitoring systems ( LPMS) producedby Mitsubishi Heavy Industries Power IDS Co., Ltdof nuclear fuel and related items and investigative
research services using overseas facilities.

and process computer software (R*TIME) ―all developed by Scientechof the US-based Curtiss-Wright Flow Control Service Corp.
Business Category| 08I n t r o d u c t i o n
E x a m p l e
Corporate Proﬁle09 | Introduction Example

Case Study 3
Helping to further improve the safety and reliability of nuclear power plants
through technologies designed to prevent severe accidents.
Fukushima Daiichi Nuclear Power Plant suffered from severe

have been mainly developed in Germany. We provide theaccidents caused by tsunami, that is said to be the biggest

following systems and equipment to nuclear power plants inone in the last 1,000 years. It resulted in damage to theJapan: Passive Autocatalytic Recombiners (PAR) for preventive

nuclear fuels, reactor pressure vessels, and reactor

measures against hydrogen explosions, Hydrogen Monitoring

Contributing to the power uprate and reducing
the outage period for nuclear power plants

containment vessels. Since then, there have been a lot ofSystem, Filtered Containment Venting System to prevent

discussions about what we can learn from the incident, and it

overpressure inside the containment, and Mobile High Pressure

is no doubt that many of them focused on topics of whether

Diesel Pumps, to secure and maintain cooling function.

We delivered high and low pressure steam turbines from Siemens

received from one of the customers after delivering the turbines tothe preventive measures for severe accidents were sufficient

Energy, Germany to Sendai Nuclear Power Station Unit 1 and 2 ofUnit 1:

Kyushu Electric Power Co., Inc.

“It was a big challenge for us to replace one high-pressure(HP) andA consortium between Siemens Energy and Marubeni Group

three low-pressure (LP) turbines in parallel in one single outage.

submitted a bit for the turbine replacement projects in competition

At first, we were confused due to cultural differences between Germans

against Japanese OEM who constructed the power plant, andand Japanese, but with closer communication, we were finally able toMarubeni-Siemens Consortium won the contract. We could

build mutual trust and complete our missions with Siemens!

reduce the outage period significantly, and completed the

Our new turbine shows very stable operational records through theinstallation work.

whole year. Results from periodical inspections are in good , andMarubeni group, as consortium leader, managed the construction

also the power increase sufficiently met our expectations. The capacity

work on-site; Siemens Energy was responsible for thefactor of Sendai Unit 1 during fiscal year 2006 (after replacement)

design, engineering, and management of the installation ofwas 103.7%, which was at the top level of Japanese nuclear power

the turbines at the power plant. Nishinippon Plant Engineeringplants. This percentage was equivalent to an increase of 230,000

and Construction Co., Ltd.—an affiliate of the Kyushu Electric

MWh compared to the year before the replacement. In addition, itPower Co., Inc.—undertook the construction work at the power

has also contributed greatly to reductions in CO2 production.

plant. This was the first case of turbines manufactured by aThis successful implementation of the project was greatly facilitatedcompany other than the original plant manufacturer of theby our management, which we highly

nuclear power plant being supplied and installed in aappreciate. The replacement led toreplacement project, and attracted much attention as an epoch

not only improved capability, but- making event in the industry.

also to a higher motivation of ourHere is some of the feedback in regards to this project that weemployees.”

Case Study 1Case Study 2
Helping to increase power output
and efficiency at nuclear power plants

Introduction Example

or not. After the Chernobyl accident in 1986, the German
nuclear industry developed and gradually implemented avariety of technologies designed to prevent severe accidents.
To utilize these proven technologies to facilitate improving theTransportable pumpsafety of Japan’s nuclear power plants, we have introduced avariety of technologies designed to prevent severe accidents.
Those technologies of a nuclear related manufacturer FramatomePAR(Passive Autocatalytic Recombiner)

Case Study 4

Case Study 5

Adopting off the shelf computers toimprove performance and reduce costs

Introducing US products for emergency
safety measures at power plants

We won the bidding competition against Japanese OEMs for

We supply Mitsubishi Heavy Industries (MHI), a manufacturer

the replacement of process computers at a nuclear powerof pressurized water reactor (PWR) power plants, withplant and delivered computers installed with R*TIME software

strainers produced by US-based Performance Contracting Inc.

produced by Scientech of the US. In the past, dedicated(PCI) for all twenty-four PWR power plants in Japan. With themachines were used to replace process computers for

Government now demanding

displaying the operational status of various equipment andcountermeasures such as

instruments used in a nuclear power plant. However, toinstalling expanding strainers forminimize costs, replacement with off the shelf servers andemergency core cooling systems

PCs instead of existing dedicated process computers now(ECCSs) in case of the possibility

predominantes in the US thanks to dramatic advances in theof loss-of-coolant accidents (LOCAs), we sequentially suppliedperformance of off the shelf computers. R*TIME, developed bystrainers produced by PCI–―which has a track record in theScientech of the Curtiss-Wright Flow Control Service Corp ofUnited States –―in cooperation with MHI. It was arduous work

We provide ultrasonic flow meters developed by Sensia, LLC

mock up of the pipes

the US, is software for acquiring, computing, storing, andto accommodate the demands of each individual plant–―eachof the US. CheckPlus is a self-contained high-accuracy

used in a nuclear power plant to measure actual flow rates so as

displaying data that is necessary in the operation of nuclear

requiring strainers with different configuration and specifications

ultrasonic flow meter for water, oil and other liquids used in

to ascertain the liquid profile.

power plants. R*TIME was–―but we work with equipment makers and plant manufacturers

power plants, pipe lines, chemical plants and other facilities.

CheckPlus flow meters have beencustomized and developed at

to conduct site surveys in order to supply the products that best

This is the only product certificated by the US Nuclear

introduced at some power plants inUnits 2 and 5 of the Fukushima

suit each plant.

Regulatory Commission (NRC) for use in a power uprate

Japan and have contributed to an

Dai-ichi Nuclear Power Plant of(increasing the maximum power level at which a nuclear powerincrease in power output.

Tokyo Electric Power Company.

plant may operate). The photo shows a test setup that uses aCorporate Proﬁle| 10