Technical data

References 49

SIMATIC ET 200iSP

Norr Systems, Singapore –

Cargo and ballast system

Requirements

Loading and offloading of liquid cargo for Tanker always is a

challenge. Emphasis on safety is paramount importance of all

aspect. Especially for dangerous and flammable cargo, proper

loading and offloading procedure is important role for Cargo

Master. As such, Valve Control became most important sys-

tems in cargo load distribution. The Valve Control system must

equip with reliable design and components used. Any failure

of this system could be resulted undesirable consequences on

both Vessel and Human safety.

Solution

NORR SYSTEMS had developed a good design on using High /

Low Hydraulic Valve Control Systems integrated with Siemens

Automatic Product. From mechanical aspect, the low pressure

IS solenoid valve provided good solution for better reliability

(Oil cleanliness is less stringent compare to high pressure sole-

noid valve) and easy maintenance. As from Electrical aspect,

Siemens PLC provide good fit on both IS distributed I/O (ET

200iSP) and PROFIBUS provide good solution to provide com-

munication between Hazardous areas (zone 1) and safe areas.

Since, the electrical command and feedback signals for con-

trolling the valve are via PPROFIBUS. Shipyard installation work

is minimize and the specify software programming can build

in many additional fault diagnostic functions for the entire sys-

tems. More importantly, the number of component used on

the whole systems had reduced (due to Siemens Solution) and

the entire system reliability is higher and better.

Benefits

The principle benefit of this Integrated Hydraulic High / Low

valve Control systems is entirely suit the customers specify

needs on both "user friendly and easy maintenance". The

Siemens ET 200iSP provide extreme simplified design commu-

nication between Hazardous area and safe areas and zener

barrier was no longer needed. The customer feels very com-

fortable on this system, while this system still helping the ves-

sel crew for Loading / Offloading of cargo in one of the off-

shore oil field.