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Led by Senior Pipeline Integrity Engineer Simulacrum
Tank inspection to the API 653 standard from shell and bottom evaluation through API 650 design, settlement assessment, inspection methods and scheduling, corrosion management, welding procedures (ASME IX), damage mechanisms (API 571), NDE (ASME V), and fitness-for-service (API 579).
Led by Senior Pipeline Integrity Engineer Simulacrum
The question
The tank inspector's primary task is determining the minimum acceptable shell thickness, the maximum allowable fill height, and the remaining life before next inspection. This module covers the API 653 scope and suitability-for-service determination, the shell thickness formula (t_min from diameter, liquid height, specific gravity, and allowable stress), UT grid measurement methodology and the pass/fail comparison, maximum fill height calculation from measured minimum thickness, tank bottom inspection (UT grid, MFL floor scan, pitting assessment), and the release prevention barrier requirement for leak detection.
Outcome
The student can apply the shell thickness formula, calculate maximum fill height, describe the bottom inspection methods, and explain the release prevention barrier. (API 653 — shell and bottom evaluation)
Sub-units
Led by Senior Pipeline Integrity Engineer Simulacrum
The question
The tank inspector must understand API 650 because fitness evaluation compares current condition to original design basis. This module covers API 650 shell thickness design (one-foot method and variable-design-point method), material selection and joint efficiency (E = 1.0 for full RT, 0.85 for spot, 0.70 for none), three settlement types (uniform, differential, localised) and their structural effects, the settlement survey methodology with the API 653 acceptance formula, and tank reconstruction, alteration, and repair procedures (patch plates, insert plates, bottom replacement).
Outcome
The student can apply both thickness design methods, explain joint efficiency, describe three settlement types, interpret a settlement profile, and describe three repair methods. (Tank design, settlement, and reconstruction)
Sub-units
Led by Senior Pipeline Integrity Engineer Simulacrum
The question
API 575 provides the practical guidance for inspecting tanks — when, how, and how often. This module covers external and internal inspection scope and methods, on-stream inspection techniques (external UT, acoustic emission floor testing, robotic inspection), scheduling from corrosion rate and remaining life with the API 653 maximum intervals, four causes of deterioration (external corrosion, internal corrosion, mechanical damage, foundation degradation), API 651 cathodic protection for tank bottoms (impressed current and sacrificial anode), and corrosion rate calculation with short-term vs. long-term trending.
Outcome
The student can describe both inspection types, calculate the inspection interval from corrosion rate and remaining life, describe the API 651 CP requirement, and calculate corrosion rates from two inspections. (Inspection methods, scheduling, and corrosion)
Sub-units
Led by Senior Pipeline Integrity Engineer Simulacrum
The question
Every tank repair involves welding — and the quality of the weld determines whether the repair restores integrity or introduces a new defect. This module covers the ASME IX framework (WPS, PQR, WPQ — the documented chain from procedure qualification through welder certification), essential variables that trigger requalification, welding positions and the qualification hierarchy (6G qualifies all positions), four welding processes for tank work (SMAW, GMAW, FCAW, GTAW), and in-service welding — the two critical hazards (fire/explosion and burn-through) with the minimum wall thickness requirement and the hot tapping procedure.
Outcome
The student can describe the WPS/PQR/WPQ framework, identify five essential variables, describe four welding processes, and explain the two in-service welding hazards with their controls. (Welding procedures and qualifications)
Sub-units
Led by Senior HSE Engineer Simulacrum
The question
The inspector must understand what caused the damage — because the mechanism determines the repair strategy and the re-inspection interval. This module covers five API 571 damage mechanisms relevant to tanks (general corrosion, pitting, MIC, caustic SCC, brittle fracture), five ASME Section V NDE methods (VT, PT, MT, UT, RT) and the defects each detects, API 577 weld inspection and defect classification with the zero-tolerance policy for cracks, API 579 fitness-for-service at three assessment levels (screening, engineering, FEA), and the brittle fracture assessment for older tanks operating below the material's transition temperature.
Outcome
The student can describe five damage mechanisms, describe five NDE methods, explain the three FFS assessment levels, and describe the brittle fracture risk and three corrective options. (Damage mechanisms, NDT, and FFS)
Sub-units