Glossary

Glossary of construction readiness, execution-risk, and recovery terms.

Plain definitions of the terms used across Torvane's pages, in the order a project meets them: from the execution plan and the sanction decision, through readiness, craft, and progress measurement, to recovery, turnover, and start-up. Written for owners, boards, lenders, insurers, and anyone reading a construction report they did not write.

Project execution plan (PEP)

The owner's written plan for how the project will be delivered: contracting approach, organization, schedule basis, procurement strategy, and the assumptions behind each. It is approved long before the field exists, which is why the construction portion of it is worth testing against field conditions rather than accepted as a statement of fact.

Execution plan review before sanction

Construction execution plan (CEP)

The contractor's plan for building the work: sequence, work packaging, craft histogram, supervision structure, indirects, temporary facilities, and logistics. A sound plan states what has to be true for the sequence to hold. A weak one states intent. The difference shows up in the first congested month, not in the document.

Execution plan review

FID (final investment decision) and sanction

The point at which an owner or sponsor commits capital to build. Sanction converts a plan into an obligation, so the delivery basis behind it — schedule, estimate, craft assumption, contracting structure — becomes very difficult to change afterwards. Testing that basis before the decision is cheaper than discovering it in the field.

Advisory for owners and sponsors

EPC, EPCM, and multi-prime

Three ways to structure delivery. Under EPC, one contractor holds a single scope and price. Under EPCM, a managing contractor coordinates trade contracts the owner holds. Multi-prime means the owner holds several major contracts directly. Each allocates craft-shortage and interface risk differently, which is a construction question before it is a commercial one.

Execution plan and bid review

Constructability of the bid

Whether the work can physically be built in the order, density, and duration the bid assumes, with the craft the region can supply. A price can be arithmetically correct and still not constructible. The test is not the total; it is the sequence, the access, the crew sizes, and the hours per unit behind it.

Bid execution review

Estimate reasonableness

A field test of the numbers: quantities-to-hours logic, productivity factors, crew composition, indirect ratios, and the allowances carried for weather, access, and rework. Reasonableness is not benchmarking against a database. It is asking whether these hours can be produced by these crews under the conditions this site will actually have.

Estimate and schedule reasonableness review

Schedule density

How much work the schedule expects in a given area, system, or month. Dense periods look acceptable at project level and fail at work-front level, because crews cannot occupy the same space, cranes cannot serve every lift, and permits cannot be issued fast enough. Density is where most schedules quietly become unachievable.

Critical-path realism

Whether the driving path reflects how the work will actually be built. Common failures are missing logic, activities that assume simultaneous access, durations set to fit a date rather than a rate, and commissioning shown as a single bar. A path that cannot be walked on site is not a critical path.

Float

The time an activity can slip before it moves a milestone. Float is only as real as the logic that produces it, and it is often consumed before construction starts by late documents, late materials, or late access. Where a project reports comfortable float and misses monthly targets, the logic deserves attention.

Craft histogram

The planned number of craft workers by trade over time, including the peak. A histogram is an assumption about a regional labor market at a specific date, not a resource that has been secured. The useful question is whether that peak exists nearby, by trade, at that wage, against everything else being built.

Craft supply and labor strategy

Craft density

The number of workers occupying a given area or system at once. Above a certain density, adding people reduces output: crews wait on access, scaffold, and each other. Density limits are physical, and they are usually reached earlier than the plan assumes, particularly in brownfield and modular interface areas.

Supervision ratio

The number of craft workers per foreman and general foreman. Every productivity assumption carries one. Ratios stretch quietly during ramp-up because supervision is harder to hire than craft, and stretched supervision shows up as rework, waiting time, and safety pressure before it shows up in the progress report.

Site leadership and supervision

Indirects

The staff and support that make direct work possible: supervision, planning, materials control, quality, safety, warehousing, transport, and site services. Indirects are cut first under bid pressure and missed first in execution. A thin indirect plan usually costs more in lost craft hours than it saved in the estimate.

Temporary facilities

Everything built to build the project: site power and lighting, water, offices, change facilities, warehousing, laydown, roads, fencing, camps, and transport. These are scheduled last and needed first. When they arrive late, craft productivity is affected from the first week, and the loss is rarely recovered later.

Laydown

The prepared area where materials, modules, and equipment are received, stored, and staged before installation. Undersized or badly sequenced laydown forces double handling, blocks access, and turns crane time into logistics time. It is a physical constraint that can be measured before mobilization rather than discovered during it.

Mobilization

The point at which the construction workforce, supervision, and site services arrive and the field is released to build. Mobilizing into an unready site is the most expensive avoidable decision on a project, because idle craft hours cannot be recovered and early sequence loss compounds through the peak.

Explore services

Independent project advisory

An independent, client-defined examination of the project conditions that matter to the decision being made, from development and due diligence through EPC selection, mobilization, execution, recovery, turnover, start-up, and handover. It evaluates the plan, the assumptions carrying it, the evidence supporting or challenging it, the implications for likely outcomes, and the credible paths forward. It is a measurement and an opinion, not a direction to the project.

Explore services

Greenfield project

Construction on a site with no operating facility to work around. Everything the work needs must be created first: access roads, temporary power and facilities, laydown, camps or local transport, and an on-site organization that does not yet exist. Readiness turns on the ramp, on first-wave subcontractors, and on whether supervision arrives before the craft do.

Brownfield project

Construction inside or beside an operating facility. Tie-ins, permit-to-work density, isolations, and simultaneous operations govern when work can happen, and an operating organization whose priorities outrank construction controls access. Productivity assumptions carried over from greenfield work do not hold, and supervision ratios have to be higher for the same installed quantity.

Work-front readiness

Whether the crew arriving at a specific location tomorrow morning can work a full shift: drawings issued, materials staged, access and scaffold in place, permits obtained, preceding work complete, tools and equipment available. Readiness measured anywhere other than the work front tends to describe intent rather than condition.

Work package

A defined scope of work with its drawings, materials, quantities, hours, and sequence gathered in one place so a crew can execute it without hunting for information. Packaging discipline is one of the strongest signals of construction maturity, and the absence of it is visible on site within hours.

Installation work package

A work package built for the crew at the work front: the specific installation scope, the exact material list, the access and scaffold requirement, the permit, the quality checks, and the hours allowed. Where these exist and are complete, productivity assumptions become defensible. Where they do not, they are guesses.

Rules of credit

The agreed method for claiming partial completion of an activity, for example percentages for receiving, setting, aligning, welding, and testing a spool. Rules of credit drift under schedule pressure, front-loading credit for easy steps. When reported progress and field condition separate, drifted rules are usually part of the reason.

Progress verification

Earned value

A reporting method that compares work performed with work planned and cost incurred. Its usefulness depends entirely on the quality of the quantities, the baseline, and the rules of credit beneath it. Earned value calculated on optimistic inputs produces confident numbers that describe a project nobody would recognize on site.

Progress verification

Independent comparison of reported progress with physical condition: walking the work, counting what is installed and tested, testing rules of credit, and checking whether the forecast is supported by achieved rates. It answers where the project actually is, which is the first question in any recovery or funding conversation.

Progress verification

Independent construction monitor

The independent party who verifies physical progress and forecast for a lender, board, or insurer, and reports on an agreed cadence. Torvane provides this as advisory monitoring only: it observes, verifies, and reports. It does not direct construction, certify payment, approve draws, or accept quality.

Progress verification

Recovery assessment

An assessment of a project that is already behind, covering condition, causes still active, and the options available with what each requires and costs. The value is in honesty about achieved rates: a recovery built on productivity the project has never produced restates the same date a second time.

Recovery assessment

Recovery plan

The client's plan to return a project to a defensible date, usually involving resequencing, added or better-supervised craft, work-package repair, and revised commitments. Torvane can test a recovery plan against observed field capability and report where it is unsupported. The client owns the plan and runs it.

Governance seat

An advisory place at the table where project decisions are reviewed, giving a sponsor or board independent construction insight alongside the reporting it receives from the delivery parties. It is an advisory role only: no authority over the work, no approvals, no direction to contractors, no decisions taken on the client's behalf.

Project labor agreement

A pre-hire agreement setting wages, work rules, and dispute procedures for a project, typically with building-trades unions. It affects craft availability, mobility between projects, shift and overtime patterns, and how quickly a workforce can be built. It is a construction planning input, not only a commercial or relations matter.

Labor strategy review

Start-up skyline

The planned order and dates on which systems and sub-systems turn over from construction to commissioning and then to operations, drawn as a profile against the calendar. Read against the schedule, it shows whether the start-up sequence and the completion dates agree. A skyline that stays flat until the last weeks is asking the start-up date to carry more than the turnover process can deliver.

Commissioning and turnover readiness

Systemization

Reorganizing the work from areas into systems and subsystems so it can be tested, handed over, and started up in a logical order. Projects that systemize late discover that construction completed by area does not turn over by system, and the start-up date moves while everything looks finished.

Commissioning and turnover readiness

Turnover package

The documentation that transfers a system from construction to commissioning and then to operations: test records, certificates, punch status, and as-built information. Built as work completes, packages are a by-product. Built afterwards, they become a project of their own, and they sit directly on the start-up date.

Turnover readiness

Commissioning readiness

Whether the project can actually begin checkout and start-up: systemization complete, turnover packages current, commissioning organization staffed and on site, checkout sequences agreed with operations, punch volume clearing faster than it is written, and the boundaries between construction, commissioning, and operations written down and understood.

Commissioning readiness

First fire and first gas

The first operating milestones on power and LNG projects: introducing fuel and firing equipment, and producing the first liquefied cargo. Both are system milestones rather than area milestones, so they are reached through completed, tested, and documented systems, never through construction that merely looks finished.

LNG readiness

Simultaneous operations (SIMOPS)

Construction carried out alongside operating or commissioned plant, governed by permits, isolations, gas testing, escorts, and access rules set by operations. SIMOPS reduces achievable productivity in ways greenfield estimates do not reflect, and access can be withdrawn for reasons that have nothing to do with the project.

Petrochemical readiness

Reliance letter

A written arrangement permitting named third parties, such as a syndicate, investment committee, or board, to rely on a report addressed to the client. Scope and limits are stated. Torvane arranges reliance in the engagement letter before work begins, and issues no certifications or legal opinions of any kind.

Reliance and reporting

Torvane (the soil instrument)

A small hand instrument pushed into soil to measure its shear strength before load is applied. The reading is simple, immediate, and decisive. The firm is named for it because the same discipline applies to construction: test every step of the process before the full weight of execution is placed on it.

About the firm and the name

Contact

Discuss the work in front of you

Begin with the organization’s role, the project context, the current stage, and the work that requires independent review.