Location:

Order Date:

Completion:

Industry:

Nagasaki, Japan

December 2001

March 2003

LNG

http://www.yokogawa.com/suc/

Executive Summary

Saibu Gas Co., Ltd. built an LNG receiving terminal at its Nagasaki Works to ensure a stable supply of clean-burning utility

gas to its customers in Nagasaki Prefecture. In a project that will serve as a model for future terminals, Saibu Gas achieved a

superb design that fit all plant functions into a limited area. Yokogawa’s 30 years of experience in providing control systems

for LNG receiving terminals was instrumental in ensuring a successful outcome for this project.

- Scalable, flexible configuration with functions distributed to multiple controllers on a facility basis

- Redundant architecture optimally designed for requirements of entire plant

- General-purpose communications network used for control bus

- Integrated operation environment through web-based human-machine interface (HMI)

Compact, Well-designed LNG Terminal Ensures Stable Supply of

Utility Gas

SUCCESS STORY

“We are very satisfied with the STARDOM system as it has exactly the kind

of ultra-distributed configuration that we had in mind. The plant started up

smoothly, and our operators are comfortable working with this system.”

Mr. Hayakawa, Manager, Nagasaki Works, Saibu Gas

Mr. Yamanaka

Manager

Nagasaki Works

Mr. Murashima

Leader

Nagasaki Works

Mr. Masumoto

Leader

Nagasaki Works

ISD-SP-R072

The Challenges and the Solutions

Scalable, flexible configuration with functions distributed to multiple controllers on a facility basis

The Nagasaki Works employs many cutting-edge technologies at its LNG receiving terminal facilities, which include a berth

for arriving LNG tankers, an LNG regasification plant, and a terminal where LNG is reloaded onto tank lorries for shipping.

STARDOM controllers are assigned to the monitoring and control of the individual facilities, each of which carries out a differ-

ent function.

Redundant architecture optimally designed for requirements of entire plant

Assigning controllers on a facility basis ensures each facility’s independence, improving the reliability of the entire LNG ter-

minal. For greater safety, high-priority facilities have redundant controllers. Facilities with a redundant configuration employ a

single CPU, eliminating extra investment for higher cost performance.

General-purpose communications network used for control bus

Controllers installed over a wide area spanning from the central control room (CCR) to the berth and shipping terminal com-

municate with each other through Ethernet and fiber-optic cables. The cost of the new system is reduced by using general-

purpose network cables and equipment, and reliability is improved through the use of redundant control buses and repeaters.

Integrated operation environment through web-based HMI

A SCADA system with a web-based HMI enables the same operation to be performed at the CCR and the berth control room,

which are 1 km away from each other and are connected by fiber-optic cables.

SUCCESS STORY