Kiefner & Associates Inc.

API-653 Hydro Waiver Brochure 1

Reconstruction and major repairs to aboveground petroleum product storage tanks require a full hydrostatic test before continued service. Performing this test can be costly, time-consuming and often logistically challenging. Recognizing this, Section 12.3 of API 653 allows for exemptions to the hydrostatic test when certain criteria are met. One of these criteria is to perform a fitness-for-service (FFS) assessment per API 579-1/ASME FFS-1

Kiefner provides this expertise including rigorous Level III assessments utilizing proprietary FEA software. Just a few of the assessments Kiefner performs are:

Kiefner provides this expertise including rigorous Level III assessments utilizing proprietary FEA software. Just a few of the assessments Kiefner performs are:

  • Wall Thinning  (Parts 4, 5, and 6)
  • Brittle Fracture, Crack-Like Flaw  (Parts 3 and 9)
  • Distortion, Out of Roundness  (Part 8)

Kiefner routinely performs this service for a number of US and Canadian operators allowing for significant reduction in costs and safe continued operation of your storage tanks

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