Whiptail Approval Adds a Sixth Stabroek Development to Guyana's Offshore Buildout

Procurement Checks for Offshore Piping Components

When bidding on projects like Whiptail, EPC buyers should verify the following:

• Material specifications: Confirm that fittings and flanges meet the required ASTM standards (e.g., A182 for forged fittings, A403 for wrought austenitic stainless, A928 for duplex).
• Sour service requirements: If the reservoir contains H2S, components must comply with NACE MR0175/ISO 15156. Check hardness limits and material selection.
• Traceability: Full mill test certificates (EN 10204 3.1 or 3.2) are typically required. Ensure that the manufacturer can provide complete chemical and mechanical property data.
• Third-party inspection: Many offshore projects require inspection by an independent body (e.g., DNV, BV, SGS). Confirm that the supplier accepts such inspections.
• Coating and surface finish: For subsea components, special coatings or cladding may be required. Verify the supplier's capability.

RFQ Inputs for Piping and Fittings

When preparing an RFQ for piping components for a project like Whiptail, include:

• Line class and service conditions: Design pressure, temperature, fluid composition, and any sour service or hydrate inhibition requirements.
• Standards and specifications: Reference the project's piping specification, which typically cites ASME B31.3 or B31.8 for design, and ASME B16.9/B16.5 for dimensions.
• Material grades: Specify exact grades, e.g., ASTM A105 for carbon steel flanges, ASTM A182 F316/316L for stainless, or UNS S31803/S32750 for duplex.
• Quantity and delivery schedule: Provide clear timelines, as offshore projects often have tight schedules.
• Documentation requirements: List required certificates, inspection reports, and test plans.

Inspection and Documentation Points

Key inspection points for piping components include:

• Dimensional inspection: Verify critical dimensions such as wall thickness, end-to-end dimensions, and flange facing.
• Positive Material Identification (PMI): Ensure that the material grade matches the certificate.
• Hydrostatic testing: For fittings and flanges, hydrostatic testing may be required per project specifications.
• Non-destructive testing: Depending on the service, radiography (RT), ultrasonic (UT), or dye penetrant (PT) may be specified.
• Marking and traceability: Check that each piece is marked per MSS SP-25 and that the marks match the MTC.

Common Risks and How to Mitigate

• Material substitution: Some suppliers may offer cheaper equivalents. Always require a material test certificate and PMI.
• Incorrect heat treatment: For low-temperature or sour service, proper heat treatment is critical. Verify the heat treatment process and records.
• Delays in certification: Third-party inspection can cause delays. Plan ahead and choose suppliers with experience in offshore projects.
• Logistics: Offshore projects often require special packaging and export documentation. Confirm that the supplier can handle export requirements.

Related Capabilities at Hebei Haihao Group

For EPC buyers sourcing piping components for offshore projects, Hebei Haihao Group offers a range of prefabricated piping solutions and pipe supports. Our prefabricated piping and installation services can help reduce on-site welding and installation time, while our pipe supports and hangers are designed to meet the demanding requirements of offshore platforms and FPSOs.

Conclusion

The Whiptail approval underscores the long-term commitment to developing the Stabroek block. For suppliers, this is an opportunity to participate in a major project, but it requires careful attention to specifications, quality, and documentation. By following the procurement checks outlined above, EPC buyers can ensure that their piping components meet the high standards required for offshore service.

Sources

• https://corporate.exxonmobil.com/news/news-releases/2024/0412_guyana-offshore-development-whiptail
• https://corporate.exxonmobil.com/locations/guyana/operations/guyana-project-overview