All supporting systems and infrastructure outside the primary process equipment, such as electrical, piping, HVAC, and civil works. For subcontractors, BOP (Balance-of-Plant) scope often represents the bulk of awarded field labour. Knowing what falls under BOP helps avoid scope gaps and missed bid items.
Balance-Of-Plant
Related Terms
DMR (Damage Mechanism Review)
IndustryA structured engineering assessment identifying how equipment or piping could degrade, corrode, or fail. Subcontractors use DMR findings to scope inspection work and apply correct procedures. Ignoring DMR requirements can result in scope gaps, rework, or safety incidents.
Life Extension
IndustryA formal process that prolongs the operational life of ageing assets beyond their original design lifespan. For subcontractors, it often means increased inspection, repair, and maintenance scopes. Expect stricter compliance requirements and potential for longer-term service contracts.
CIPP (Cured-in-place Pipe)
IndustryA trenchless pipe rehabilitation method where a resin-saturated liner is inserted into a damaged pipe and hardened in place. Subcontractors typically provide specialised crews, inversion or pull-in equipment, and UV or steam curing systems. Common in municipal, oil and gas, and industrial pipeline maintenance scopes.
Liquefaction Train
IndustryA complete processing system that cools natural gas into liquid LNG (Liquefied Natural Gas) for storage and transport. Each train is a major construction and maintenance scope, often requiring large, specialised subcontractor workforces. Shutdowns and turnarounds on these units are high-value contracts with strict schedule demands.
Debottleneck
IndustryTo identify and remove constraints limiting throughput or efficiency on a project or facility. For subcontractors, this often means mobilising additional crews or equipment to clear backlogs. Work is typically urgent and can command premium rates.
Greenfield Construction
IndustryBuilding a facility or infrastructure from scratch on undeveloped land, with no existing systems to tie into. For subcontractors, this means larger scopes, longer mobilisation windows, and more coordination with multiple trades. Expect extended project timelines but higher volume of billable work.
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