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Business Critical Rotating Machinery Return to Service
Problem Statement:
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Client approached Rigmech to support production critical pump return to service on an urgent basis to minimize business impact.
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​The failed unit was in the Middle East region whereby 3 contracted vendor companies failed to meet client expectations.
Rigmech Actions:
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Rigmech Engineer liaised with Support Engineer located in region to fully understand situation and preferred outcome.
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Rigmech Engineer mobilized to the region from the UK complete with small inventory of specialized tools and materials required to execute scope. Engineer on site within 4 days on initial contact. The defective pump had reports of high vibration and excessive mechanical seal leakage. It was noted that Mechanical Seals had been installed recently by another vendor.
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Rigmech Engineer removed defective mechanical seals and dismantled on site. Ex-service seals from previous scope were turned around from ‘backload’ shipment and returned to site as no new spare parts were available to repair in situ units. Both sets of seals were disassembled, and donor parts used to make a serviceable set. Bearing housing re-alignment and site machining for dowel fixtures carried out and pump unit rebuilt. During re-assembly checks, it was noted that wrong thickness gasket material was used previously on bearing housing assembly which was rectified. – Pump unit was then reassembled as per OEM specifications.
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Alignment checks were carried out and found OEM alignment drawings specified incorrect offsets – It was concluded the alignment issues and bearing housing gasket anomalies were main contributors to high vibration and subsequent seal failures.
Rigmech Engineer carried out corrections and successfully returned unit to service within 72 hours on arrival at site.
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Latterly, a call was made on another failure where Rigmech responded in a similar manner and in addition supported Client in RCA on failure on completion of remedial works.