Certified Tank Inspection and Testing Services in Sacramento, Stockton & Modesto

NDT Tanknicians is an industry leader in storage tank and pressure vessel testing, inspections, and repairs in the Sacramento-Stockton-Modesto area. We go above and beyond to ensure the structural integrity of your tanks, boilers, pressure vessels, and pipelines so that you can enjoy peace of mind.

Increase the longevity of your assets with expert mechanical integrity evaluations and non-destructive testing.

Non-destructive testing (NDT)

OSHA 10, 30 & 40 Approved


API 653, API 510, API 570 & SP0001 Certified


Oil and gas



Chemical manufacturing

Industrial Asset Management Made Simple

Our Inspectors are certified ASNT-SNT-TC-1A Non-Destructive Testing (NDT) technicians. Our NDT methods yield in-depth quantitative results, allowing us to calculate corrosion rates and find areas of excessive deterioration. We can then recommend the preventative maintenance needed to mitigate the probability of a hazardous discharge into the environment and avoid more costly repairs later on.

We perform both fixed interval inspections and risk-based inspections to provide insight into the structural integrity of your assets when it is most needed. Our expert API 653, API 510, STI SP0001, and API 570 California tank inspections will uncover exactly how well your tank is holding up, to both outside elements and the product it contains.


  • Above Ground Tank Inspection
  • Visual Inspections
  • Ultrasonic Testing
  • Magnetic Particle Testing / Magnaflux Inspection
  • Penetrant Dye Testing
  • Vacuum Box Testing
  • Radiographic Testing
  • Ultrasonic Thickness Testing
  • Tank Tightness Testing

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Why Sacramento, Stockton & Modesto are Choosing NDT Tanknicians

While the counties of Stanislaus, Sacramento, and San Joaquin are known for their rich agriculture, the numerous oil fields in the San Joaquin Valley are the primary source of much of the country’s oil extraction and refining, as well as the production of petroleum products. Many large oil fields are located in the San Joaquin Basin, including the Midway-Sunset Oil Field, the Kern River Oil Field, the Fruitvale Oil Field, the South Belridge Oil Field, and the Elk Hills Oil Field. According to the Bureau of Land Management, 95% of all federal oil drilling occurs in this area. Thanks to the region’s rich natural resources, its petroleum industry is thriving, and the Sacramento-Stockton-Modesto area is home to companies such as Capitol Oil Corporation, STRATA, InterState Oil Company, Wickland Corporation, and Golden Valley Paving.

Environmental damage may pose a risk to tanks and vessels in this area. The region’s semi-desert climate includes dry summers, but the winter precipitation can result in flooding, particularly in Modesto, while the high temperatures and solar radiation in the summer may lead to excessive expansion of storage tank materials. In addition to our tank inspection services, we provide anti-corrosive coating and lining services and expert repair services, allowing you to extend the lifespan of your assets and protect your assets against premature degradation.

Storage tank technology has greatly improved since Kern County’s Lakeview Gusher spill in 1910 (which remains the largest accidental oil spill in history), but tanks and pressure vessels still require regular inspection and maintenance in order to protect and ensure their durability. Following the 2007 Cosco Busan oil spill in the San Francisco Bay, bills requiring more stringent oversight of California’s oil-producing facilities were passed. We are seriously committed to supporting the structural integrity of your assets and helping to protect your business from unexpected and devastating costs.

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  • American Society of Non-Destructive Testing (ASNT) SNT TC-1A
  • National Association of Corrosion Engineers (NACE) Certified Coating Inspector
  • Steel Tank Institute (STI) SP001 AST (Shop Fabricated) Certified
  • American Petroleum Institute (API) 653 AST (Field Erected) Certified
  • American Petroleum Institute (API) 651 (Cathodic Protection) Certified
  • American Petroleum Institute (API) 570 (Pipelines)
  • American Petroleum Institute (API) 510 (Pressure Vessel)Certified

We take pride in the certifications we hold and strive to always uphold the high standards of the respected organizations that granted them.


Tank Coatings and Linings
We offer surface preparation and application of interior and exterior anti-corrosive coating systems for a wide range of substrates, including concrete, steel alloys, and plastics.

Repairs, Alterations, and Engineering Repairs
Whether you’re dealing with corrosion, plumbing failure, poor maintenance, dispensing and delivery problems, or unsafe tank conditions, our expert repair services increase the lifespan of your assets.

Industrial Cleaning
We have extensive experience and state-of-the-art equipment for cleaning all types of industrial environments, including storage tanks, sumps, separators, and pressurized vessels.


Oil & Gas Refining: Above ground Storage Tanks, Process piping & Pressure vessels

Insulated Asphalt ASTs

Rendering Tanks

Air Receiver Tanks


Mechanical Integrity Evaluation

Non Destructive Testing

Mechanical Integrity Evaluation

Asset Remaining Life


The CAL FIRE-Office of the State Fire Marshal oversees and enforces the implementation of the Aboveground Petroleum Storage Act:

APSA regulates tank facilities that are subject to the federal Spill, Prevention, Control and Countermeasure (SPCC rule) or tank facilities with an aggregate storage capacity of 1,320 gallons or more of petroleum in aboveground storage containers or tanks with a shell capacity equal to or greater than 55 gallons. APSA also regulates tank facilities with less than 1,320 gallons of petroleum if they have one or more stationary tanks in an area (TIUGA) with a shell capacity of 55 gallons or more of petroleum, and, in this case, only the TIUGAs are subject to APSA, although there are exceptions.

Tank facilities must comply with regulations requiring an SPCC Plan (with some exceptions) and tanks with greater than 10,000 gallons of total aboveground petroleum storage capacity must be inspected a minimum of once every three years by the Unified Program Agencies.

Office Of The State Fire Marshal Headquarters
715 P Street
Sacramento, CA 95814
PO Box 944246
Sacramento, CA 94244-2460
Phone: (916) 568-3800

Pipeline and Hazardous Materials Safety Administration’s Office of Pipeline Safety (PHMSA)  
1200 New Jersey Avenue SE, Washington, DC 20590
Phone: (202) 366-4433
HAZMAT Registration Help Desk: (202) 366-4109
Hazardous Materials Information Center: 1 (800) 467-4922 

U.S. Environmental Protection Agency (EPA)
Region 9 Office
US EPA Pacific Southwest, Region 9
75 Hawthorne St.
San Francisco, CA 94105