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API 653 โ€“ Aboveground Storage Tank Inspection Code Gap Analysis

Systematically assess your aboveground storage tank in-service inspection programme against API Standard 653 covering shell inspection, floor inspection, roof inspection, foundation and settlement, annular plate, cathodic protection, RBI, fitness-for-service, repair and reconstruction, and inspector qualifications.

API 653 (5th Edition) In-Service Tank Inspection Floor Scanning & MFL Floating Roof Inspection Auto-Save Enabled
Inspection Topic: Showing all requirements.
Tank Type: All tank types shown.
Overall Progress
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โœ“ Compliant: 0 ~ Partial: 0 โœ— Gap: 0 โ€” N/A: 0 โ—‹ Not Assessed: 0

๐Ÿญ Facility & Tank Inspection Programme Details

LEGEND: Programme Shell Floor/Annular Roof Foundation CP Settlement RBI FFS Repair Inspector Records   All Types OTFR IFRT Fixed Roof

Gap Analysis Report

Executive summary and section-by-section compliance overview for API 653 Aboveground Storage Tank Inspection Code.

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๐Ÿ“Š Section-by-Section Compliance Rate
๐Ÿ”ด Identified Gaps & Actions Required
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ISO Xpert โ€“ Your API 653 Tank Inspection Partner

Expert API inspection code consulting for aboveground storage tank owners and operators โ€” tank inspection programme development, floor scanning assessment, floating roof surveys, settlement monitoring, CP review, RBI, and inspector training.
Headquartered in London, serving clients globally.

๐Ÿข About ISO Xpert

ISO Xpert is a leading API and ISO management system consultancy and training provider headquartered in London, UK. We support storage tank owners, operators, and inspection companies in developing and implementing compliant API 653 in-service inspection programmes โ€” from initial gap analysis and programme documentation through RBI study facilitation, floor scanning evaluation, settlement survey interpretation, cathodic protection system review, and inspector competency training.

Our consultants bring practical petroleum storage and refinery experience across the full range of tank damage mechanisms including external and internal corrosion, floor pitting and MIC, shell corrosion, floating roof seal degradation, pontoon corrosion, weld cracking, settlement-induced stress, and external coating breakdown.

API 653API 510 API 570API 580/581 RBI API 579-1 FFSAPI Q1 ISO 9001ISO 45001 Tank Programme Development MFL Floor Scanning Review RBI Implementation Floating Roof Surveys Settlement Monitoring CP System Review Inspector Qualification Training Courses

๐Ÿ“ Contact Information

๐Ÿข
ISO Xpert Ltd
71-75 Shelton Street, Covent Garden
London, WC2H 9JQ
United Kingdom
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๐ŸŽ“ Online Training

Expert API 653 and aboveground storage tank inspection training on Udemy โ€” self-paced courses for tank inspectors, integrity specialists, and facility operators.

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Need API 653 Tank Inspection Programme Support?

Our specialist team helps tank farm owners and operators develop and improve compliant API 653 programmes โ€” gap analysis, inspection procedures, RBI, floor scanning review, settlement monitoring, and inspector training. Contact us for a free consultation.

Common Questions

API 653 Aboveground Storage Tank Inspection โ€” Frequently Asked Questions

Authoritative answers about API 653 Aboveground Storage Tank Inspection, inspection intervals, qualifications, RBI, and ISO Xpert consulting.

What is API 653?
API 653 is the American Petroleum Institute's Standard for Tank Inspection, Repair, Alteration, and Reconstruction. It provides minimum requirements for maintaining the integrity of in-service aboveground storage tanks (ASTs) built to API Std 650 or other applicable standards, including inspection intervals, methods, acceptance criteria, repair procedures, and inspector qualifications.
What are the API 653 inspection intervals for ASTs?
Under API 653, the maximum external inspection interval is 5 years or the interval established by RBI. The maximum internal (out-of-service) inspection interval is 10 years or the interval based on corrosion rate (half the remaining corrosion life), whichever is less. For tanks with RBI, intervals may be extended with documented justification. Tank floor inspection is a key driver of the internal inspection interval.
What tank types does API 653 cover?
API 653 covers aboveground atmospheric storage tanks including: fixed cone roof tanks, fixed dome roof tanks, open-top floating roof tanks (OTFR), internal floating roof tanks (IFRT), and horizontal tanks. The inspection requirements vary by tank type, particularly for roof inspection where floating roof seals, pontoons, and legs have specific requirements.
What is the tank floor inspection requirement under API 653?
API 653 requires internal inspection of the tank floor to assess corrosion, pitting, settlement, and shell-to-floor weld condition. Floor scanning by MFL (magnetic flux leakage) or ultrasonic methods is required for all floors unless a documented alternative assessment is performed. Critical areas include annular plates, shell-to-bottom weld zone, and areas subject to product or water accumulation.
Can ISO Xpert help develop an API 653 tank inspection programme?
Yes. ISO Xpert provides API 653 tank inspection programme gap analysis, inspection procedure development, RBI implementation, tank floor assessment, settlement monitoring, cathodic protection system review, inspector qualification guidance, and training for storage tank inspection professionals. Contact us at info@iso-xpert.com or call +44 7853 109840.

More questions? Contact ISO Xpert or browse other API gap analysis tools.