Equipment Supervision Engineer flashcards

33 cards. Read the term and the definition here. The deck at the top of this page is optional.

Young's modulus

Ratio of tensile stress to tensile strain in the linear elastic region of a stress–strain curve; it measures material stiffness and is the slope of that linear segment.

Yield strength

Stress at which a material begins permanent plastic deformation, determined by the 0.2% offset method when no distinct yield point appears on the curve.

Weld joint efficiency

Factor applied to allowable stress in pressure equipment design to account for reduced strength at welded seams; its value depends on the extent of radiographic examination.

RSS tolerance stack-up

Statistical tolerance accumulation computed as the square root of the sum of squared individual tolerances, assuming independent random deviations; gives a smaller allowance than worst-case summation.

Supervision plan

Overall document prepared by the chief supervision engineer and approved by the supervising entity's technical director before work starts, defining scope, organization, and control measures.

Supervision implementation rules

Detailed document written by the specialized supervision engineer for high-risk or specialized works, approved by the chief supervision engineer, and specifying control points and inspection methods.

Hold point

A designated stage where the contractor may not proceed until the supervisor has inspected and signed off; proceeding without sign-off is a reportable violation.

Work suspension order

Formal instruction halting work for serious quality or safety hazards, reported to the owner and lifted only after verified rectification of the stated cause.

Mandatory standards precedence

Compulsory code clauses for equipment and pressure systems override conflicting contract terms; any agreement below the mandatory minimum is void and unenforceable.

Supervisor signature liability

Signing an acceptance document certifies verified conformity with contract and code; signing without actual verification creates personal and entity liability for resulting defects.

Conflict of interest disclosure

Duty to declare and avoid any financial or personal interest in contractors, suppliers, or subcontractors on a supervised project, including gifts and gratuities.

Confidentiality obligation

Prohibition on disclosing or reusing the owner's technical data, process parameters, and commercial terms learned during supervision without the owner's consent.

NDT method selection

Rule matching method to flaw type: radiography for internal volumetric flaws, ultrasonic for internal planar flaws, penetrant for surface flaws, magnetic particle for ferromagnetic surface flaws.

First article inspection

Full verification of a first production unit against drawings and specifications, confirming that the manufacturing process can produce conforming parts before mass production begins.

WPS and PQR

Welding procedure specification plus its supporting procedure qualification record; production welding must follow a qualified WPS verified before manufacturing starts.

Nonconformity disposition

Classification of a nonconforming item as rework, repair, use-as-is under concession, or scrap; repairs affecting strength require design authority approval.

Bid validity period

Time during which a bidder is bound by its bid; the owner may request extension, and a bidder refusing extension may withdraw without forfeiting the bid bond.

Performance bond

Guarantee, usually five to ten percent of contract price, securing the supplier's performance; the owner may claim against it for uncorrected default.

Lump-sum contract

Fixed total price for a defined scope; quantity and cost risk rest with the supplier, so scope definition must be complete before award.

CIF Incoterm

Seller delivers goods on board and pays freight plus insurance to the named destination port; risk transfers to the buyer at the ship's rail.

Claim notice time bar

Contractual deadline, commonly twenty-eight days after the triggering event, within which a claim must be notified; late notice may extinguish the claim entirely.

Foundation handover check

Verification of elevation, centerline, anchor-bolt positions, and concrete strength records against the equipment general arrangement drawing before installation begins.

Soft-foot check

Verification that all machine feet seat evenly on the baseplate without induced strain; performed before final shaft alignment and grouting.

Commissioning sequence

Progressive testing order: single-machine no-load, single-machine load, linked no-load, linked load, then performance test, each stage gated by satisfactory results.

Punch list closure

Tracking of outstanding installation items with responsible party and due date; all items must be closed and re-verified before final acceptance is granted.

Total float

Time an activity may be delayed without delaying project completion; equals late start minus early start, or late finish minus early finish.

Critical path

Sequence of activities with zero total float; any delay on this path extends project completion by an equal amount unless compression is applied.

Cost variance

Earned value minus actual cost; a positive value indicates the work performed cost less than budgeted, a negative value indicates overrun.

Schedule performance index

Earned value divided by planned value; a value below one indicates the project is behind the planned schedule at the measurement date.

Risk scoring

Risk level computed as likelihood multiplied by severity, then located on a matrix classifying it as unacceptable, tolerable under ALARP, or broadly acceptable.

MTBF and availability

Mean time between failures equals operating time divided by failure count; availability equals MTBF divided by the sum of MTBF and mean time to repair.

Hazardous area zones

Classification of explosive atmospheres: gas zones 0, 1, 2 and dust zones 20, 21, 22 by frequency and duration of the hazardous atmosphere.

Concurrent delay

Overlapping owner-caused and contractor-caused delay; generally neither party obtains time extension or compensation for the overlapping period under most standard contracts.