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Electro Top-Side Systems for Subsea Modules

To serve the subsea industry our redundant power and communication system feed all Subsea control modules with electric power and network. In addition we build test equipment to simulate all modules in the Subsea system before it is put into use in the sea.

MRC Global also offers services to help your operation run as smoothly and safely as possible when it counts the most.

MRC Global perform design, engineering, procurement, assembly, testing and commissioning.

SPCU: Subsea Power and Communication Unit

SPCU200 feeds redundant electric power and communication signals to all Subsea Control Modules (SCMs) via the Electric Junction Box (EJB), Optical Junction Box (OJB) and Umbilical Electric power for each system is supplied from Uninterruptible Power Supplies (UPS).

SPCTU: Subsea Power and Communication Test Unit

The SPCTU is a transportable test unit with one Topside Electronic Module (TEM) supporting power lines, fiber and Ethernet communication to the Control Modules with SEM600 electronics. The SPCTU may also be used to communicate with Subsea control modulesThe SPCTU is used for testing a control module, where the SPCTU and the SmartTool simulates the SPCU and the SCU. The SPCTU receives its electric power from any acceptable source, and supplies the control module with electric power. Communication with the control module is via power lines, Ethernet and/or via fiber lines.

SDPU: Subsea Data Processing Unit

he SDPU is a 19" rack based server cabinet housing designated servers containing developed software and third party service software. The SDPU is of an open architecture design and acts as the SPCU system network backbone. It allows access to subsea and upside networks through firewall from the individual service computers using TCP/IP based communications. Data to and from networks outside of the cabinet (e.g. SPCU) are distributed via routers and switches within the cabinet. It is designed as a two system network of system A and system B (A/B) with redundant hardware including routers/switches. This is to create redundancy of communication for networks and eliminate a single point of failure.

SEMS: Portable Subsea Electronic Module Simulator

he PSEMS is a test unit capable of simulate one Subsea Control Module (SCM) (equal to two Subsea Electronic Modules (SEM)). The PSEMS include interface to the Sensor Simulator (SESI). The PSEMS is used for testing the Subsea Control Unit (SCU) and the Subsea Power, and Communication Unit (SPCU200e) during system test of Subsea Control Systems. The PSEMS is configured from the Smart Tool, which is connected to the Topside Electronic Module (TEM200e) in the SPCU.

ESI: Sensor Simulator

The SENSOR SIMULATOR Cabinet (SESI Cabinet) consists of a cabinet with Sensor Simulator boards tailored to the specific project. It is used to test the external sensor interface of the Subsea Control Module on FAT, EFAT and later for service.

XTCC: Xmas tree control system

The XTCCM is a modularized system for Subsea Power and Communication with a server rack for HMI functions, Smart Tool, database and WIS server functions. The modularized system shall be prepared for redundant power and communication for subsea control modules with KS200E Long speed electronics.

EPU: Electrical power unit

he EPU provides a controlled, monitored, electrically isolated and stable dual redundant power supply to the power distribution networks of the subsea control system.

JB/ OJB: Electric and Optic Junction box

MRC Global provides Subsea customer with both Electric Junction box and Optic junction box. These Junction boxes operates in hazardous conditions and are supplied with proper certifications for given environments.