MAIN PROJECT DETAILS

Project: HMF-H Marine Riser 10 Year Re-certification
Start Date: April 2015
Completion Date: Ongoing
Drilling Rig: SAIPEM 10000
Owner: SAIPEM
OEM: GE Oil & Gas
Riser Type: HMF-H
Certifying Body: American Bureau of Shipping (ABS)
No. of Recertified Joints: 90ft Joints (52 pcs), 5ft Joints (2 pcs), 10ft Joints (2 pcs), 15ft Joints (2 pcs), 20ft (1 pc), 40ft (1 pc)

PROJECT DESCRIPTION

Multimarine Services Ltd is a GE Oil & Gas Approved Contractor for the Overhaul & Repairs (O&R) HMF-H Marine Risers.

In April 2015, Multimarine Services Ltd was appointed by GE Oil & Gas to complete the Full 10 Year Recertification of 52 x 90ft Riser Joints and 8 x Pup Joints of the D/S SAIPEM 10000. All works are being completed in Multimarine’s facilities in Limassol Port and include the following:

Handling, transportation and storage of the Riser Joints with an in-house fleet of Mobile Cranes; Joints

Provision of customized tools & complete disassembly of Riser Joints to component level

• Buoyancy Modules
• Hardware (thrust collars, threaded inserts, locking nuts, riser bolts, nose pins/seal subs)
• Auxiliary Lines

Traceability & Document Control

• Cleaning and preparation for Inspection
• High Pressure Water Cleaning (HPWC) at 250 bar
• High Pressure Water Jetting (HPWJ) at 1,500 bar
• Abrasive Blasting (angular, sharp shaped grit)
• Vacuum Abrasive Blasting (angular, sharp shaped grit)
• Soda Blasting

Full Non-Destructive Testing (as per SNT-TC-1A) & other methods of inspection

• Visual Testing (VT)
• Magnetic Particle Testing (MT) – colour contrast and fluorescent
• Liquid Penetrant Testing (PT) – colour contrast and fluorescent
• Ultrasonic Testing (UT) including wall thickness
• Phased Array Testing (PA) – Optional
• Eddy Current Testing (ET) – Optional
• Brinell Hardness Testing
• Positive Material Identification (PMI)
• Dimensional Testing

Repair and/or re-manufacture as required to restore compliance of failed components

• Auxiliary Lines – repairs and/or complete re-fabrication from new parts and pipe
• Main Tubes – cutting and welding of new pipe
• Buoyancy Modules – repairs

Methods of welding using approved Welding Process Specifications include:

• GTAW – manual
• GMAW – semi automatic
• SMAW – manual
• FCAW – semi automatic
• SAW – automatic

Hydrostatic Pressure Testing

Coating of Marine Riser, Buoyancy Modules & Hardware

• Surface dust assessment, surface profiling and dry film thickness measurements
• Application of approved Protective Coating Systems
• Galvanizing of hardware
• Phosphate Coating of hardware

Complete assembly of Riser Joints, maintenance and storage

Issue of CoC

Issue of Data Book for each Marine Riser Joint