DOLPHIN was entrusted with comprehensive service contracts for Plate Heat Exchanger (PHE) maintenance across multiple operational units. The scope covered:

• Blinding, de-blinding, dismantling & bundle pulling

• Insertion, hydro-jetting, chemical cleaning & re-tubing

• Pressure testing, plugging, and box-up of all types of Shell & Tube, Air-Cooled, and Plate Heat Exchangers

We were the main contractor under multiple long-term agreements:

• Ruwais Refinery (RR-I, RR-II, RR-III & GUP) | Contract Ref. 4700012214 (2022–2025)

• Comprehensive PHE Overhauling (Hisaka Models) | Contract Ref. 4500009212/9246/9285 – 2020

• Shell & Tube Heat Exchanger Services | Contract Ref. 4600006122 – 4-Year Agreement

The project included mechanical cleaning, NDT, gasket replacement, and specialized servicing of Hisaka PHE models such as 60HP201A/B, 60HP801A/B../P, and 60HP1801G/H/I/J/K.

Our consistent execution, technical precision, and responsiveness have positioned DOLPHIN as a reliable service partner in long-term refinery maintenance programs.