Below is the actual scope of TSIE’s capabilities, in two parts. The first describes our technical competence: the codes we apply, welding capability, the equipment we cover and our planning and reporting tools. The second describes our operating model: how we handle interfaces, critical decisions and communication in the field, which in our experience is the part that decides whether a project stays on track or falls behind.
If you are looking for a specific capability that is not listed, ask us directly: we answer yes or no, not maybe.
Part 1 — Technical competence
Sectors & project types.
We operate in three industrial contexts, each with its own technical and documentation constraints.
Oil & Gas. Refining, gas treatment and process plants, including sites in remote areas and high ambient temperatures. This is the context where logistics, workforce management and spare parts availability weigh as much as technical competence.
Power. Generating plants and their power islands: high-temperature piping, critical valves, integrity of circuits in service.
Nuclear fusion (ITER). We have worked on nuclear fusion construction sites. It is the context with the strictest documentation requirements we have met: full material traceability, procedures approved before every operation, no room for interpretation on acceptance criteria. The working method we took from it is the one we apply elsewhere too.
Codes & standards we work to.
Every TSIE job is executed and documented to the code that applies to your plant. We are not talking about “general knowledge of the standards”: we are talking about qualified procedures, acceptance criteria set before work starts and traceable test documentation at the end of the job.
The reference code is agreed at kick-off and written into the Inspection & Test Plan. From then on it is the yardstick for accepting or rejecting every single activity.
Pressure equipment
Pressure vessels, columns, reactors and heat exchangers: we follow the cycle from review of the design documentation through supervision of fabrication to final testing. For the European market we manage the interface with the Notified Body and the consistency of the technical file required by the PED, including vessel classification and verification that the conformity assessment module has been applied correctly.
Piping
We establish from the start which of the two codes governs the line, because weld acceptance criteria, extent of examination and test requirements all change. We cover incoming material control, fit-up checks against isometrics, welding supervision, the non-destructive testing required by the service class and witnessing of hydrostatic and pneumatic leak tests.
Welding: qualification
We write the procedure specifications (pWPS and WPS), manage the qualification test coupons and their certification (PQR), and qualify welders (WPQ) on the validity ranges the job actually needs. Many treat this step as a formality: in practice it is the document on which the acceptability of every site weld rests, and the first thing a third-party inspector reads.
Welding: execution
For steel structures and for setting the practical welding conditions (preheat, interpass temperature, heat input, consumables handling) we apply the operating references that turn the qualified procedure into an instruction the welder can execute. This is where cold cracking, distortion and repairs are prevented.
Storage tanks
Atmospheric storage tanks: supervision of new construction to API 650 and assessment for inspection, repair, alteration and reconstruction to API 653. We cover the bottom, shell courses, welds and final tests, as well as settlement and geometric tolerance checks.
Valves
Testing and inspection of isolation, control and safety valves: seat and shell tests, dimensional checks, review of material documentation and witnessing at the shop before shipment. We step in both on new purchases and after overhaul, when the valve comes back from the repair shop and needs an independent check before reinstallation.
In-service inspection
On an operating plant the question is no longer fabrication compliance but remaining integrity. We support the assessment of pressure vessels (API 510) and piping (API 570): condition review, evaluation of remaining thickness and active damage mechanisms, definition of the extent of examination and support for the decision to repair, replace or continue operation with monitoring.
NDT & inspection — Level 3 oversight.
Non-destructive testing is where the quality of a plant stops being an intention and becomes a measurable fact. TSIE operates with Level 3 consultancy to ISO 9712 and CSWIP 3.2 certified welding inspection.
Our work sits before and after the physical execution of the test. Before: defining the extent of testing according to service class, writing and approving procedures, setting acceptance criteria consistent with the construction code, qualifying and verifying the competence of Level 1 and 2 operators. After: technical review of reports, assessment of doubtful indications, handling of non-conformities and any concession requests, decisions on the repair and its procedure.
This positioning has a practical consequence for the client: we do not just produce a certificate, we take technical responsibility for the judgement. When an indication is at the limit of acceptability, someone has to decide whether it is repaired, accepted with a documented concession or rejected. That decision requires formal technical authority, not an opinion.
The methods and qualification levels that apply are defined case by case, according to the reference code, the joint type and the criticality of the equipment. Contact us with the applicable code and the type of testing required: we will confirm coverage and timing.
Specialized welding on critical equipment.
All materials and all alloys.
Welding on critical equipment is the activity where a mistake does not show at once and costs far more later. That is why TSIE treats every joint as part of a closed documentation system: qualified procedure, welder qualified on that procedure, traceable filler metal, parameters controlled during welding, non-destructive testing, records.
Welding processes
The choice of process is never neutral: it depends on material, thickness, position, access and productivity requirements. On a thin-wall nickel alloy joint in a fixed position, the wrong process produces systematic defects regardless of the welder’s skill.
Materials and alloys
P91 requires strict control of preheat and post-weld heat treatment, or the mechanical properties are lost.
Processes and consumables chosen according to the service and the line class.
Heat input must be controlled to keep the correct ferrite-austenite balance.
They require a level of cleanliness and contamination control that cannot be taken for granted on site.
Overlays on process surfaces exposed to corrosive service.
Welding-related services
- Preparation of pWPSs and WPSs and definition of the ranges of validity
- Execution, witnessing and certification of PQRs
- Welder qualification and requalification (WPQ), with continuity checks
- Management of PWHT and heat treatment: cycle definition, thermocouple placement, chart validation
- Control and traceability of filler metals: storage, baking, oven management, heat number reconciliation
- Compilation and close-out of the welding book and weld map
Equipment scope.
The assets we work on, in installation, maintenance and inspection.
Static
Static equipment
- Vessels, columns, reactors. Erection, inspection during fabrication and in the field, dimensional and alignment checks, internals inspection, box-up and testing.
- Shell & tube exchangers and air coolers. Bundle opening and closing, tube inspection and plugging, shell-side and tube-side tests, controlled bolting.
- API 650 storage tanks. Bottom and shell welds, geometric tolerances, final tests.
- Boilers, furnaces, process piping. Replacement of piping sections, tie-in welds and heat treatment.
- Safety, control and isolation valves. Testing, overhaul, safety valve setting, documentation review.
Rotating
Centrifugal and positive-displacement pumps
- Installation on baseplate, grouting and flatness check
- Laser alignment pump-motor and soft foot check
- Run-out and clearance checks
- Mechanical seal and bearing replacement
- Complete overhaul with check against manufacturer tolerances
- First start-up functional checks
E&I
Field instrumentation
- Pressure, temperature, level and flow transmitters
- Impulse lines and process connections
- Calibration with traceable reference instruments
- Loop check point to point up to the control system
- Positioners on control valves
- Installation in hazardous areas
- Loop folders, calibration certificates, as-built
We state the rotating scope explicitly because we prefer a short, true list to a long, generic one. Alignment deserves a note: it is the activity with the highest ratio between impact on reliability and cost of execution. A residual misalignment that nobody measures turns into early wear of seals and bearings, and so into unplanned shutdowns months later.
On E&I, instrumentation and mechanical installation are planned together, not one after the other. It is the difference between a plant ready for commissioning and a plant that is mechanically complete but blind.
Planning & reporting tools.
Technical competence without a planning tool produces sites that run well until they get complicated.
Planning and progress control on complex projects, multi-level WBS, critical path analysis, S-curves for physical and financial progress.
Smaller projects and turnaround activities, when the level of detail does not justify the complexity of P6.
Interface with the client’s systems for work orders, maintenance notifications and materials management, so that our work stays traced in your system and not on parallel spreadsheets.
Reading and interpreting isometrics, P&IDs, general arrangements and construction drawings; survey and as-built updates.
Inspection & Test Plans, non-conformity register, material traceability, compilation of the Manufacturing Record Book.
Daily and weekly reports with physical progress, resources, man-hours, HSE events and open issues. Format agreed at kick-off, not imposed.
Part 2 — How we operate
Facts, not talk.
Our site operating model.
Roughly one in five site delays has a technical cause. The rest come from unmanaged interfaces, information that does not reach the right level and decisions postponed because nobody takes responsibility for them.
That is why you will not find a list of personal qualities here. You will find the project governance capabilities we bring to site, each with the document it produces. If a capability does not generate a verifiable deliverable, it is not a capability: it is a statement of intent.
Interface & contractor management
Daily coordination of multiple subcontractors, management of clashes between disciplines (mechanical, E&I, civil) and continuous alignment with the client’s Project Management Team. Clashes are resolved in a meeting the week before, not in the field on the day with two crews standing idle.
Multi-level technical communication
The same information has to be translated three ways: as an executable instruction for the foreman in the field, as documentary evidence for the QA Manager, and as progress and risk data for the client. Whoever can speak to only one of these three creates misalignments that surface late.
Managing multicultural teams
We work on sites in the Middle East and the Balkans with crews mixed by nationality and language. Handling the language barrier is not a matter of courtesy: it is a matter of safety and quality. A work instruction half understood produces a wrong weld or an injury.
Decision making under pressure
A plant shutdown or a critical non-conformity on equipment in service: within a few hours you need a technical assessment, the viable repair options, the impact on schedule and cost and a reasoned recommendation. Postponing the decision is already a decision, and almost always the most expensive one.
Negotiation and change management
Variations are discussed on a documentary basis (field evidence, dated photos, progress records), not on opposing perceptions at the end of the job. A well-documented site reduces disputes because it leaves less room for interpretation.
HSE culture beyond paperwork
Permit to work, lock-out/tag-out, confined space entry and hot work are part of the operating sequence, not a formality to clear before the real work starts. When safety is planned together with the work, it does not slow it down.
Mentoring and skills transfer
During commissioning and the first period of operation we work alongside the client’s staff, because a plant handed over to a team that does not know it is only half handed over. The stated goal is to make our continuous presence unnecessary.
Vendor independence
TSIE does not sell equipment and has no agency agreements with manufacturers. When we give a technical judgement on a supplier, a material or a repair, that judgement carries no upstream conflict of interest. It is a structural condition, not a promise.