- BACKGROUND
PanAfrican Energy Tanzania Ltd. (an Orca Company hereinafter referred to as PAET) is the operator of the Songo Songo Gas Project on Songo Songo Island (551), Kilwa District, Lindi Region, United Republic of Tanzania, and has a proven track record of successfully developing natural gas resources for domestic use in Tanzania.
PAET operates the Songo Songo license in Tanzania, which has a total area of approximately 170 km2. The blocks are located in shallow water 15 km off the mainland coast, some 200 km South of Dar es Salaam. The Songo Songo project was Tanzania’s first natural gas development and East Africa’s first gas to power project. The SSI gas processing facility was originally designed with a 70MMscfd gas export capacity, which was subsequently re-rated to 110MMscfd in 2010(2 x 55MMscfd dew-pointing trains).
The license contains the large Songo Songo gas field which lies in the southern area of the offshore Tanzanian Coastal Basin. The field is positioned on and slightly offshore Songo Songo Island.
PAET has significant ambitions to grow production from the Songo Songo field and is well positioned to capitalise on suitable value accretive opportunities in the country. With the widely held view of natural gas being a transitional fuel, the business is strongly placed to support Tanzania’s expanding energy demands
Songas owns the infrastructure that enables the natural gas from the Songo Songo field to be transported to Dar es Salaam, where it is consumed by power and industrial customers. This includes a 110MMscfd gas processing facility, a 25 km 1 offshore pipeline and a 207 km 1n onshore pipeline.
PAET operates the gas processing facility on behalf of Songas, as well as 8 wells in the SSI field (4 offshore and 4 onshore). PAET also owns and operates a 50 km downstream distribution network and a compressed natural gas facility in Dar es Salaam. The maximum facility export rate is constrained by the export pipeline operating envelope of 87.5bar(g) export pressure and a 52bar(g)arrival pressure at the Songas Ubungo Power plant.
The raw gas arrival pressure at the SS! gas processing facility is currently at declining rapidly due to increased export production demand, which is below the minimum required by the original design.
PAET successfully executed the Phase 1 plant upgrade (Refrigeration project)and Phase 2 plant upgrade (LP Compression project).
The objective of this project is to Install a fourth (4th) compressor train to improve the Reliability, Availability, and Maintainability (RAM) of the gas processing facility, establishing the sparing capacity of the existing compression system at 33%, at inlet pressures below 54bar(g).
The engineering design will be based on installing the 4th compressor train alongside the current 3 operating trains to provide an adequate sparing philosophy when required during periods of high demand. The work will recognise current field/reservoir considerations that call for separate manifolding of HP and LP wells.
The 4th compressor train is to be connected via the existing LP Manifold and in parallel to the 3 existing compressor trains. The new train will be equipped with the an identical 2-stage reciprocating compressor and gas engine, with a 38bar(g) intake and 110Bar(g) discharge pressure, in a 3n+135MMscfd configuration for a maximum output rate of 105MMscfd. This assumes that future higher pressure wells will be configured directly to the existing high pressure (HP) Manifold which will make up the total gas supplied.
The compressors are driven by natural gas engines on skid mounted structures. The entire project mainly comprises a power part, compression part, pressure vessel, process pipe, air cooler system and instrument control part. The main engine is to be placed on a skid seat, and the air cooler isto be placed respectively on another skid seat.

Raw gas from the various lower pressure wells enters the gas processing facility via the installed LP manifold and LP separator. The new compressor train will tie-in downstream of this inlet manifold/separator configuration. After the gas has been separated, filtered, and compressed, gas from the LP compressors (LP-COMP-xxx-A/B/C/D) will be limited to a maximum supply capability of 105MMscfd and variable by means of controlled discharge from the newly configured 3n+1 facilities. The utilities, relief lines and auxiliary support for the main compressor system configuration will be considered early in the engineering design, the major capital equipment of which is shown below:

Ref. No. 07062023 MET FEED Services – 4th LP Compression Facilities – draft for internal review
- OBJECTIVE OF THIS REQUEST FOR EXPRESSION OF INTEREST (E0I)
PAET invites interested companies to provide responses to this pre-qualification E01 process. The Participants must be a fully registered legal entity.
This call for Eol signifies the start of an open, transparent, and objective pre-qualification process to bid for the services described. Selection of the preferred contractor will be based on the result of the pre-qualification process and contractors who have not completed the prequalification process will not be considered for award.
Parties are invited to notify PAET of their interest in taking part in the prequalification process in order to receive the package to complete for submission.
Potential Bidders should be well-established and reputable companies and shall indicate that they are willing, capable, experienced, and competent in supplying the said Services preferably to the Oil & Gas Industries. Failure to indicate clearly may result in disqualification.
3. PRIMARY TECHNICAL CAPABILITIES REQUIRED
The respondent should be able to demonstrate compliance with the following through the provision of concise applicable documentary proof:
- Facilities design covering gathering and processing facilities, infield flowlines and export pipelines in onshore settings.
- Geotechnical analysis for design and installation of onshore structures.
- Definition and evaluation of both brownfield and greenfield projects for upstream oil and gas field development.
- Process design including optimal process flow sheets, process flow diagrams (PFDs) based on closed heat and material balances (H&MBs).
- Instrument and control system design including Control Philosophy and control system specification (e.g., DCS / PLC) including relief valve sizing and specification.
- Rotating equipment design, sizing and equipment specification.
- Electrical and utilities philosophies, sizing and design to meet facility needs.
- Complete, sized equipment lists detailing capacity, duty, dimensions, materials of construction, operating pressure, and temperature (including major utility and infrastructure equipment), Data sheets for long-lead equipment.
- General arrangement drawings, equipment layouts and plot plans.
- Development of Operations and Maintenance philosophies.
- Conduct of HAZID and HAZOP studies and application of corrective action to reach final design approval.
4. FEED SERVICE COST ESTIMATE & SCHEDULE:
A cost estimate should be supplied in accordance with AACE International Recommended Practice No.18R-97.
- The cost of the FEED services should assume a level of engineering and design detail to be provided that will enable the progression to ITT for the Engineering, Procurement Construction & Commissioning (EPCC) phase.
- The FEED work detail expected will enable a Class 3 accuracy estimate of -20% / +20%.
- A previously executed LLP FEED study (related to the independent supply of compressor facilities to the SGP) can be utilised where applicable.
- A FEED study schedule should be provided with the cost estimate.
5. REQUIREMENTS OF SUBMISSIONS
Interested parties will be required to provide evidence of prior experience in each of the areas defined above. Experience of projects in Africa is desired and contractors should highlight their expertise of delivering Front End Engineering Studies.
As part of the prequalification process potential bidders will be required to submit information to demonstrate their technical competency and relevant experience. As a minimum, this must include the following:
- Proof of experience in providing said Services preferably in the Oil & Gas industry.
- Proven relevant technical capability.
- Valid Company registration certificate, business/commercial license(s), Tax Identification, Tax Clearance Certificate, VAT sales tax number and recent BRELA Online Registration system (ORS) Annual return/Detailed Company Information/official Company Search or its equivalent for the International Companies.
- Proof of registration in the EWURA LSSP Database as the Local Supplier and Service Provider or for international companies indicating willingness to team up with Local expertise in any form as per the Tanzanian Petroleum Act, 2015 and the Local Content Regulations, 2017
- Proof of QHSE standards, i.e., Certificates of registration with a recognised institutions such as ISO standards for quality, health, safety, and environment, Safety Management System with the following; Company HSE Policy and Compliance Certificates, Incident/Accident reporting procedure, safety statistics for three years, risk assessment of operations, Safety plans, appointed safety professionals, representatives and committee, accident / incident investigation process, and intervals of trainings, management of change process and safety assurance program.
- Proof of financial capability (provide latest approved audited financial statements for the past 3 years) and a Comfort Letter from your Bank.
- Any other current Certification, ratings and credentials for the Contractor.
- Current approved ESG policy.
- Completion of screening pack Checklist provided by Company via emails provided below.
6. SUBMISSION INSTRUCTIONS
- All correspondence regarding this enquiry shall be in writing and communicated by e-mail via the emails provided below, otherwise the potential bidder may be disqualified from tendering at the sole discretion of PanAfrican Energy Tanzania Limited.
- All submissions must be considered ‘commercial in confidence’. Documents should be password protected, with passwords submitted via separate email.
- Deadline for notification of interest is on Friday 23 June 2023 at 2pm EAT. Any EOl submitted after the deadline will be disqualified.
- Deadline for submission of prequalification package is on Friday 07 July 2023 at 2pm EAT. Any submission made after this deadline will be disqualified.
Physical E01 / prequalification package to be delivered to the following address:
PanAfrican Energy Tanzania Limited Offices in Oysterbay, Oyster Plaza, 5th Floor, Haile Selassie Road, P.O. Box 80139, Dar es Salaam, Tanzania
Attn. Bizimana Ntuyabaliwe, Deputy Managing Director.
Electronic E01 / prequalification package to be sent to the following emails on the last day of submission:
Email Addresses: [email protected] cc [email protected] and rmoheleapanafricaneneray.com