Shell Australia Pty Ltd. (“Shell”) is seeking Expressions of Interest (“EoI”) from experienced and capable Prospective Contractors to provide Weather Monitoring System (WMS) Services for Prelude FLNG, in the form of:.

(1) Software provision and support; and
(2) Hardware calibration, training and maintenance.

The WMS system is classified as a safety critical system, intimately linked to the Shell’s Adverse Weather Working Standard (AWWS), and contributes to the safety, planning and cost-effectiveness of a wide range of operations, including aviation and marine logistics, maintenance, marine services for cargo offloading, process and LNG work streams.

Prospective Contractors may submit the EOI for individual components of WMS scope (Software (1) or Hardware (2)), or cover the full scope WMS system (Software (1) and Hardware (2)).

The Prospective Contractor will be the prime contractor for Shell Australia Pty Ltd.

1. Weather Monitoring System Overview

2. Scope Overview

2.1 Prospective Contractor shall manage, direct, supervise and control Services described in this Article herein and all associated obligations and operations as described in this article and shall assume the obligations, liabilities and rights as specified in the Contract.
2.1.1 Co-ordinate, organise, control and monitor Services.
2.1.2 Provide qualified and experienced Team members to execute Services accordingly.
2.1.3 Perform works in line with the relevant codes, standard and Company specifications.
2.1.4 Mobilise prior to the start date of the Purchase Order, and demobilise following Purchase Order completion, expiry or termination (if necessary);
2.1.5 Support and advise Company in organising, scheduling, controlling, monitoring and supporting the Services.
2.1.6 Provide any related Goods or Prospective Contractor Items required for the execution of the Services.

2.2 Services

Prospective Contractor shall supply the following Services: Service Scope description

1 Software requirements

Development or provision of Real-time metocean data acquisition and display software and associated operating system on offshore server to control the processing, display, logging and onward transmission of continuous, high quality, real-time metocean and vessel motion data from the WMS sensors to the offshore server. Software shall be capable of:

• (a) Appropriate real-time QC of raw data and derivation of required parameters to ensure that corrupt data are not displayed, or are displayed with an appropriate warning made clear to the user.
• (b) Logging and archiving of raw data.
• (c) Spectral (frequency domain) and deterministic (time domain) wave processing for wind-sea and swell partitions, defined by an appropriate watershed algorithm.
• (d) Correcting data to standard datum, but logging both raw and corrected values (for wind speed, barometric pressure and air temperature).
• (e) Correction of direction data relative to True North using NMEA string from the Facility gyro compass Page 3 of 10
• (f) Display and recording of wind sensors; where two sensors are installed (i.e. telecoms tower), selection of appropriate wind sensor to minimise sheltering effects depending on wind direction.
• (g) In addition to the on-board sensors, Offshore Server shall log and process data from a Datawell Directional Waverider buoy deployed in the Facility field.
• (h) PC clock is synchronised to the real time clock system via NTP over LAN to ensure consistent and accurate time base for the recorded data with minimal drift
• (i) Display of processed data in real-time
• (j) Select from a variety of pre-programmed screen displays (heli-monitoring screen, general met, wave and currents )
• (k) Display a maintenance bulletin to show when maintenance is being undertaken on WMS.
• (l) Store system display up-time information
• (m) Transmitting the data to the DCS (for recording in PI), berthing aid system and the Shell Metnet server in near real-time, including processed data and system up-time data
• (n) Buffering data if network connection is not active
• (o) Transmitting buffered data when network is back online, ensuring most recent data has highest priority to ensure up-time of onshore display is maximised.
• (p) Transmission of data to Shell’s ‘METNET Global’ web portal for third party access and display.
• (q) Transmission of data to Shell’s weather forecasting services provider
• (r) Display of derived parameters on the onshore and offshore displays that are not more than 1 minute out of synchronization
• (s) 24/7 support

2 Hardware requirements

Scope boundary is the Prelude WMS sensors and hardware up to the MOXA port. Prelude WMS is a plug-and-play system with Prelude Telecomms team executing onsite maintenance.

(a) Sparing and Calibration:

Provision and calibration of sensors of manufacture and model specified by Company, including, but not limited to:

• (i) Wind speed and direction
• (ii) Barometric Pressure
• (iii) Air Temperature
• (iv) Humidity
• (v) Cloud Base
• (vi) Rainfall Page 4 of 10
• (vii) Visibility and present weather detector
• (viii) Horizontal Acoustic Doppler Current Profiler
• (H-ADCP)
• (ix) Directional wave and current radar (MIROS SM-50)
• (x) Sea temperature
• (xi) Motion Reference Unit
• (xii) Interface units
• (xiii) Associated c