Tag
#inspection
9 topics across all disciplines.
Inspection and quality control — ITPs, hold points and NCRs
How work gets inspected and accepted on an EPC project. What an inspection and test plan is, the difference between a hold point and a witness point, what a non-conformance report does, and why the disposition is an engineering decision rather than an inspector's.
Welding processes, WPS and NDT — what happens before an arc is struck
SMAW, GTAW, GMAW and the rest, explained by what they are good at. Then the paperwork that makes a weld legal — WPS, PQR and welder qualification — and how welds are inspected.
Storage tanks — the simplest equipment with the largest consequences
Why the vapour space is the whole design question, how a tank breathes, why overfill protection must be independent of the gauge, and why a tank is far weaker against vacuum than pressure.
Material degradation — sensitisation, hardness limits and galvanic attack
Why welding can ruin the corrosion resistance of stainless steel without touching the weld, what the three conditions for galvanic corrosion are and which one to break, why sour service controls hardness rather than strength, what carbon equivalent predicts, and why zinc and stainless are kept apart.
Risk-based inspection — deciding what to inspect, and how often
Why nobody inspects everything equally, how likelihood and consequence combine into an inspection plan, why naming the damage mechanism is the whole job, and the ways an RBI programme quietly goes wrong.
Non-destructive examination — choosing the method and reading the result
Why every NDE method is blind to something, what magnetic particle cannot do on stainless, why ultrasonics can miss a crack lying the wrong way, the difference between an indication and a defect, and why the examiner's qualification is part of the result.
Ex installation and inspection — where compliance is actually won or lost
Certified equipment is the easy part. Glands, unused entries, flame paths, IS segregation and the inspection regime are where hazardous area compliance is genuinely decided.
Structural steel connections — bolting, pretension and erection
The difference between a bearing connection and a slip-critical one, what pretension actually does and why it needs hardened washers, how a tension control bolt tells you it is done, why slotted holes exist and what they must not be used for, and what to check before a crane lifts anything.
Inspecting and repairing structures — the other forty years
Construction is a small part of a plant's life. What degrades, why the worst mechanisms are the hidden ones, how risk-based inspection decides where to look, and why structures quietly become overloaded.