When is Hydrostatic Testing Required?

A hydrostatic test shall be performed on tank with the following conditions before it can be returned to active service:
- Newly constructed or reconstructed tanks
- Tanks that have undergone major repairs
- Tanks intended to operate in more severe service conditions.

Considerations for Hydrotest Exemptions

Performing a hydrostatic test can be time-consuming and costly in terms of water resources and logistics. Certain circumstances, such as regulatory compliance, historical testing records, or the tank's specifications, may allow storage tank owners to obtain exemptions from this testing process.  

At Powers Engineering and Inspection Inc. (PEI), we offer comprehensive hydrostatic test exemption evaluations. Our approach combines field inspection data and engineering analysis, aligning with the API 650/API 653 standard, API 579 Fitness-for-Service (FFS) assessment, and industry best practices. Our goal is to facilitate the proper execution of all required non-destructive examinations (NDE) and necessary destructive testing in accordance with API 653 procedures, ensuring the integrity of your assets.

API 653 Hydrotest Exemption

API 653 Standard allows tanks that have undergone major repairs and alterations to be exempt from hydrostatic testing, provided the hydraulic and the structural integrity of the tank can be validated.  Tanks may qualify for exemption by meeting the API 653 criteria or demonstrating fitness for service through API 579.

API 579 Fitness-for-Service (FFS) assessment provides a route for potential hydrostatic test exemptions. This assessment focuses on evaluating the risk of failure due to key damage mechanisms such as brittle fracture and crack-like-flaws.

API 650 Hydrotest Exemption

Newly constructed tanks must undergo hydrostatic testing according to the API 650 standard. Exemptions may be allowed in cases where water is unavailable for testing, provided that the tank foundation is appropriately designed, specific safety measures are implemented, and necessary testing is conducted.

Benefits of Hydrotest Exemption

Hydrotest exemption provides cost savings, minimizes downtime, and offers environmental benefits by reducing water usage and disposal.

With our profound engineering and inspection backgrounds, we offer practical solutions to lower the costs and downtime of your tank repair and construction projects.

Our Services:
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‍Regulatory Guidance: Navigate storage tank regulations effortlessly with our up-to-date industry expertise, assessing your tank's eligibility for hydrostatic test exemptions.
‍Document Support: We assist in reviewing and preparing essential documentation for your     exemption request, including testing records and compliance reports.
‍Safety Assessment: Our experts conduct safety assessments to ensure the exemptions align with safety requirements without compromising storage tank integrity.
‍Cost Savings: Optimize your testing schedule for significant cost savings. We help you balance efficiency with safety and compliance. 

‍Why Choose Us:
- Expertise in storage tank regulations and safety standards.
- Tailored solutions for your specific storage tank needs.
- Cost-effective services that save you time and money.
- Proven track record of helping clients obtain hydrostatic test exemptions.