Industrial services for petrochemicals

Crackers, steam crackers, olefin and polymer plants demand specialised materials and safety expertise. Reactive media, high purity requirements and exotic materials such as Hastelloy, Duplex and titanium place special demands.

HSOS supports you in day-to-day operations and during turnarounds with the full portfolio of on-site solutions: heat treatment, portable machining, bolt-tensioning, ISO 24817 composite repairs, hot-tapping and line stops during live operation, controlled pipe freezing for drainage-free maintenance. All procedures are certified and documented for authority and HSE audits.

HSOS brings key TAR activities together in one strong team of specialists, reducing interfaces and waiting times.

Expertise: steam crackers (naphtha, ethane, LPG), polyethylene (LDPE/HDPE), polypropylene, BTX plants, MEG/MEO production.

Challenges

▸Damaged sealing faces on vessels and pipework
▸Replacing pipework and valves during live operation
▸Internal and external corrosion
▸Work under respiratory protection or at height
▸Tightly scheduled production windows
▸Strict ATEX zoning requirements

Our experience

✓Flange management: measurement, facing and documented bolt-tensioning from a single source
✓Composite wraps to ISO 24817 and ASME PCC-2 with top-tier documentation on process lines, tanks and columns up to 300 °C operating temperature
✓Heat treatment from induction and resistance heating through to gas burners for dry-out work, plus mobile furnaces
✓Pipe freezing on carbon and stainless lines DN 25 to DN 600
✓All types of on-site machining: cutting pipes and facing flanges of any diameter and shape
✓Line boring of valve seats, milling out damaged bolts, machining tube bundles
✓Hot tap, cold tap and line stops