Question 1

Where do you operate?

Accepted Answer

We are headquartered in Port Harcourt, Rivers State, and support clients across the Niger Delta and throughout Nigeria — onshore, in the swamp and offshore. We also support projects elsewhere in West Africa through our partner network.

Question 2

Which industries do you work with?

Accepted Answer

Our main clients are in oil & gas (upstream, midstream and downstream), offshore and marine, power and energy, manufacturing, and healthcare facilities.

Question 3

How quickly do you respond to a quote request?

Accepted Answer

We respond to every enquiry within 48 hours. For urgent operational needs, call us directly and we will prioritise your request.

Question 4

Can one contract cover more than one of your services?

Accepted Answer

Yes, and it is often more efficient. For example, we can clean a tank, inspect it with NDT, and manage the waste — under one mobilisation, one HSE plan and one point of contact.

Question 5

How do you manage health, safety and the environment?

Accepted Answer

Safety comes first on every job. We work under permit-to-work systems, carry out job safety analyses before work starts, use trained and competent personnel, and follow the client's site HSE requirements in addition to our own procedures.

Question 6

Do you work with international technology partners?

Accepted Answer

Yes. Through strategic partnerships with OEMs, technology providers and international technical specialists, we bring proven equipment and expertise to projects in Nigeria.

Question 7

How do I request a quotation?

Accepted Answer

Choose the service you need on our Request a Quote page and complete the short questionnaire. It helps us understand your scope so we can give you an accurate proposal faster. You can also email info@tdenergies.com.

Question 8

Do you sign NDAs and work under client procedures?

Accepted Answer

Yes. We are happy to sign non-disclosure agreements and to work under your contractor management, HSE and quality procedures.

Question 9

Do your personnel need to enter the tank?

Accepted Answer

Not always. For many tanks we can deploy robotic, zero-man-entry systems that remove the confined-space risk entirely. Where manned entry is unavoidable, it is done under strict permit-to-work, gas testing, rescue standby and confined-space procedures.

Question 10

How long does a typical tank cleaning job take?

Accepted Answer

It depends on tank size, product type and sludge volume. Small tanks can take a few days, while large crude tanks may take several weeks. After a site survey we give you a firm schedule as part of our proposal.

Question 11

What happens to the sludge and waste removed?

Accepted Answer

Recoverable hydrocarbons are separated and returned to you wherever possible. Residual waste is handled through our waste management service and treated or disposed of at approved facilities, with full documentation.

Question 12

Can you work during a planned shutdown or turnaround?

Accepted Answer

Yes. We plan our crews and equipment around your shutdown schedule and critical path, and can run multiple work fronts at the same time.

Question 13

Do you work offshore?

Accepted Answer

Yes. We support cleaning on FPSOs, platforms, supply vessels and tankers, subject to your offshore HSE requirements and mobilisation logistics.

Question 14

Do you offer one-off surveys as well as permanent monitoring?

Accepted Answer

Yes. We carry out one-off or periodic leak surveys, and we also design, supply, install and maintain permanent fixed gas detection systems.

Question 15

Which gases can you detect?

Accepted Answer

Our detection covers flammable hydrocarbons (methane and other combustibles), hydrogen sulphide (H₂S), carbon monoxide, oxygen depletion or enrichment, and other toxic gases depending on your process.

Question 16

Can you rent us gas detectors for a short project?

Accepted Answer

Yes. We supply portable and personal gas detectors on short- or long-term rental, calibrated and ready for use.

Question 17

Do you calibrate and maintain existing gas detection systems?

Accepted Answer

Yes. We provide scheduled calibration, functional testing, repairs and calibration certificates for detectors and systems from major manufacturers.

Question 18

What do we receive after a leak survey?

Accepted Answer

A written report with every leak located, tagged and prioritised, photographs, recommended repairs and a leak register you can use for follow-up and compliance records.

Question 19

Which NDT methods do you offer?

Accepted Answer

Our core methods are ultrasonic testing (UT), automated ultrasonic testing (AUT), ultrasonic thickness measurement, visual inspection (VT), magnetic particle testing (MT) and liquid penetrant testing (PT). Additional advanced methods can be provided through our technical partners where a project requires them.

Question 20

Which codes and standards do you inspect to?

Accepted Answer

We inspect to the codes and acceptance criteria you specify — commonly API 510, API 570, API 653, ASME Section V, AWS D1.1 and API 1104, plus operator-specific standards.

Question 21

Can inspection be done while equipment is in service?

Accepted Answer

Many of our methods, including thickness surveys and corrosion mapping, can be carried out on live equipment, which keeps downtime to a minimum.

Question 22

Do you provide inspection reports?

Accepted Answer

Yes. Every job ends with a report covering scope, methods, equipment, findings, photographs, data and recommendations, prepared by qualified personnel.

Question 23

Can you combine inspection with tank cleaning?

Accepted Answer

Yes — and it saves time. We can clean a tank or vessel and inspect it straight after, under one mobilisation and one point of contact.

Question 24

Which gases do you supply?

Accepted Answer

We supply oxygen, nitrogen, argon, acetylene, carbon dioxide and helium, as well as welding gas mixtures and calibration gas mixtures for gas detectors and analysers.

Question 25

Do you deliver to offshore locations?

Accepted Answer

We deliver to quaysides and supply bases for onward shipment offshore, and can coordinate with your logistics team for offshore campaigns.

Question 26

Can we set up a recurring supply contract?

Accepted Answer

Yes. Most of our clients prefer scheduled supply contracts with agreed pricing and delivery frequency. We also handle one-off and urgent orders.

Question 27

Do you supply cylinders or refill ours?

Accepted Answer

Both. We can supply gas in our rental cylinders, or arrange refilling and exchange of your own cylinders where they are in valid test date.

Question 28

Do you supply calibration gas for gas detectors?

Accepted Answer

Yes. We supply calibration and span gas mixtures, and our leak detection team can also carry out the calibration for you.

Question 29

What types of waste do you handle?

Accepted Answer

We manage oil & gas waste (oily sludge, tank bottoms, drilling waste), hazardous and industrial waste, medical and healthcare waste, and domestic, commercial and municipal waste.

Question 30

Do you provide waste tracking and disposal documentation?

Accepted Answer

Yes. Every collection is documented, and you receive waste tracking records and disposal or treatment certificates for your compliance files.

Question 31

Do you handle medical waste for hospitals and clinics?

Accepted Answer

Yes. We support healthcare facilities with segregation, sharps and infectious waste containers, scheduled collection and appropriate treatment.

Question 32

Can you handle the waste from a tank cleaning job?

Accepted Answer

Yes. Our cleaning and waste teams work together, so sludge and residues removed during cleaning go straight into a documented treatment route.

Question 33

Do you offer regular scheduled pickups?

Accepted Answer

Yes. We offer daily, weekly or monthly collection schedules as well as on-demand pickups for one-off projects.

Question 34

Can you source a specific brand or OEM?

Accepted Answer

Yes. We source from OEMs and their authorised distributors, and can match specific brands, models and part numbers named in your requisition.

Question 35

Do you provide material certificates?

Accepted Answer

Yes. We provide material test certificates, certificates of conformity and other documents required by your specification.

Question 36

How do you handle urgent requests?

Accepted Answer

Tell us the deadline when you send the request. We prioritise urgent items, check local and international stock options, and give you realistic delivery dates up front.

Question 37

Can you deliver to our site or supply base?

Accepted Answer

Yes. We coordinate freight, clearing and delivery to your site, warehouse or supply base.

Question 38

Can we send you an RFQ or material requisition?

Accepted Answer

Yes. Use the quote form on this site or email your RFQ, MR and datasheets directly to us — we respond quickly with a technical and commercial offer.

Frequently asked questions

Still have questions?