PACKAGE UNITS

5.19.1 GENERAL RECOMMENDATIONS

5.19.1 The instrumentation belonging to package units shall follow the vendor list of PETROBRAS.

5.19.2 This Technical Specification shall be fully followed with respect to the technical instrument selection criteria.

5.19.3 Provision shall be made for junction boxes which will serve as an interfacing element with the process units. If a local panel is used, use of junction boxes may be dispensed with, provided this is previously authorized by PETROBRAS. The designer shall consider recommendations of N-2316.

5.19.4 A list of inputs and outputs shall be prepared so as to permit the execution of the remainder of the design separate from the development of the package. This list shall contain at least the TAG number of the instrument, type of signal, destination and identification of terminal/terminal block of the interface element (junction box or local panel).

5.19.5 In the case of equipment (compressors, generators, etc.) with their own annunciators in local panels, individual alarms shall be reproduced in the DCS. If control over these equipment items is via PLCs they shall be provided with serial communication with DCS through Modbus-TCP communication protocol and provision shall also be made for use of an Ethernet port for interconnecting to the maintenance network of refinery.

5.19.6 The HMI of local panel shall be used for monitoring purpose but it recommend to avoid implementation of commands and it is recommended to specify commands with push-buttons , in the package panel, multi led lamp shall be used as alarm lamp;

5,19.7 Protection against direct sun light on display or rain, shall be provided for field panels (with or without Man-Machine Interface), such as: roofs, covers, etc.

5.19.8 For the purpose of remote configuration of instruments all analog transmitters and positioners shall be connected directly to HART Input I/O cards and not to HART multiplexers. The exceptional use of HART multiplexers has to have the formal approval of Petrobras. In the case of the use of HART multiplexers, all the multiplexers shall be connected in a serial network and interconnected to HART engineering network mounted in the CCL.

5.19.9 The Vibration Monitoring system shall be connected to a Ethernet network mounted in the CCL.

5.19.10 All PLC´s shall have an Ethernet 802.3 port in processor control unit to be interconnect to the PLC remote maintenance network in the CCL.

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5.19.11 The same criteria established in the other items of this document are applicable.

5.19.12 Unless otherwise specified, the package unit control panel shall be located at CCL for maintenance and protection reasons. Then shall be called Remote Control Panel ( RCP).

5.19.13 Local Control Panels (LCP) in the field will only be accepted if there is any technical impediment to justify the same, In this case shall be approved by PETROBRAS.

5.19.14 RCP or LCP commands for electric motors shall be sent directly to MCC (Motor Control Center).

5.19.15 All PLCs related to critical equipment shall be TÜV Rheiland SIL3 certified as defined on IEC-61508. Critical equipment is an equipment whose failure can critically compromise safety, environment or asset aspects of the related process.

5.19.14 LOCAL PANEL (LP) AND LOCAL CONTROL PANEL (LCP)

5.19.14.1 The minimum protection degree for LP and LCP shall be IP-55 in accordance with standard IEC 60529.

5.19.14.2 The LP and LCP shall be built in stainless steel AISI-304 enclosures.

5.19.14.3 LP and LCP shall be pressurized in accordance with standard IEC 60079-2 (flameproof shall be avoided).

5.19.14.4 All LP and LCP shall be electrically powered as defined in this specification.

5.19.14.5 Unless otherwise specified, LP and LCP shall be provided with a HMI, based on a flat monitor of 12”.

5.19.14.6 The HMI shall be provided with a canopy in order to prevent glare, which might preclude screen readability.

5.19.14.7 LCP shall be provided with a Hart processor in order to filter hart signals from the 4-20mA instruments and integrated in the Hart Instrumentation Maintenance System.

5.19.14.8 For the Vibration machine monitor specified to be supplied with the LCP, it shall be provided with an Ethernet Port for future connection with the On-line Machine Maintenance System .

5.19.15 REMOTE CONTROL PANEL (RCP)

5.19.15.1 Minimum protection degree for RCP shall be IP-31 in accordance with standard IEC 60529.

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5.19.15.2 RCP shall be electrically powered as defined in this specification.

5.19.15.3 RCP shall be provided with a Hart processor in order to filter hart signals from the 4-20mA instruments and integrated in the Hart Instrumentation Maintenance System.

5.19.15.4 RCP shall comply with DCS serial communication requirements defined bellow.

5.19.15.5 RCP shall comply with PLC requirements defined bellow.

5.19.15.5 For the Vibration machine monitor specified to be supplied with the RCP, it shall be provided with an Ethernet Port for connection with the On-line Machine Maintenance System .

5.19.15.6 Cable entrances shall be done through the control panel floor.

5.19.15.7 Terminal boards for cables coming from the field shall follow the same sequence of the junction boxes terminal boards in order to avoid cable pair crossings.

5.19.16 COMMUNICATION BETWEEN CONTROL PANELS (LCP / RCP) AND DCS 5.19.16.1 The operation of any package unit shall be carried out through DCS, and all signals required for supervision and operation of each package unit shall be available in the DCS.

5.19.16.2 The communication, for monitoring and alarm purpose, between the DCS and the Local Control Panel (LCP), shall be done through Ethernet communication using fiber optic cables with Modbus-TCP protocol, the DCS being master in this communication.

5.19.16.3 The communication, for monitoring and alarm purpose, between the DCS and the Remote Control Panel (RCP), shall be done through a Ethernet communication using fiber optical cables with Modbus-TCP protocol, the DCS being master in this communication.

5.19.16.4 For control and interlock purpose, the signals between the DCS and the LCP and RCP shall be done by hardwired connection. Serial communication is not permitted.

5.19.16.5 Remote commands to start and stop the package shall be done by hardwired connection; on the other hand, commands for auxiliary equipment, for maintenance and/or test purpose, can be done by serial communication.

5.19.16.6 Unless otherwise specified, the status (if it is in operation or not) of the package unit shall be provided for DCS by hardwired connection.

5.19.17 PROGRAMMABLE LOGIC CONTROLLERS (PLC’s) ( Package Units )

5.19.17.1 Unless otherwise specified by basic design, control and/or logic solver functions of a package unit shall be done by a PLC, installed inside of a LCP or RCP.

5.19.17.2 All PLC shall be provided with an Ethernet port for remote maintenance supervision purpose.

5.19.17.3 All PLC power supply sources shall be full redundant.

5.19.17.4 All PLC for non-redundant package units shall be provided with redundant CPU and redundant communication between CPU and I/O cards.

5.19.17.5 The PLC I/O cards shall be provided with a minimum of 10% spare for each signal type.

5.19.17.6 The general PLC used for package units shall follow the item 5.16 of this specification.

5.19.17.7 The safety PLC used for package units shall follow the item 5.17 of this specification.