Скачать или смотреть How to Fabricate a Steel Tank Clean-Out Door | API 650/653 Guide

Learn how to fabricate and install a steel tank cleanout door step-by-step. In this practical guide we cover layout and marking, cutting the shell opening, reinforcement/backing plates, fit-up, welding sequence, NDT, and leak testing—following best practices from API 650 (design/fabrication) and API 653 (repair/alteration/inspection) for above-ground storage tanks. Perfect for fabricators, site engineers, and inspectors working on crude oil, water, and fire-water tanks.

What you’ll learn

Cleanout door vs. manway: terminology, sizes, and typical locations near the annular plate

Job safety: permits, hot-work controls, gas testing, confined space, PPE

Layout & cut: centerlines, edge distances, reinforcement calculations (overview), cold-cut vs. oxy-fuel

Reinforcement/backing: backer ring or insert plate, fit-up gaps, tack-weld strategy, distortion control

Welding: root pass and fill passes (SMAW/GTAW/GMAW), preheat/interpass, sequence to minimize warping

NDT/Inspection: VT, MT/PT where applicable, dimensional checks, edge blending, final cleaning

Hardware & sealing: gasket surfaces, hinge/bolt arrangement, latch, sealant, final torque pattern

Tightness tests (as required by project specs) and documentation/turnover

Why this matters
A properly fabricated clean-out door (shell manway) allows safe entry, sludge removal, and inspection with minimal downtime. Following API 650/653 practices improves reliability, reduces leaks, and extends tank service life.

Tools & materials (typical)
Measuring & marking tools, cutting tools (cold saw/Plasma/Oxy-fuel as allowed), clamps, strong-backs, welding machine, consumables, grinders, surface prep tools, NDT kit (MT/PT as specified), gaskets/bolts/hinges, sealant, and paint system per spec.

Notes & disclaimers
This video is for educational purposes. Always follow your site procedures, WPS/PQR, ITP, and local regulations. Refer to your project drawings and the latest editions of API 650 and API 653 for mandatory requirements.

If this helped you, like & subscribe for more fabrication, piping, and storage-tank content. Got questions about dimensions, WPS, or inspection? Drop a comment and we’ll help!

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