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Failures

Failure Analysis Library

Real, documented industrial equipment failure mechanisms — symptom, cause, and the actual fix, not generic troubleshooting tips.

16 Documented Failure Modes

Browse by Failure

Mag-Drive Pump Dry-Run Failure

Why sealless mag-drive pumps still fail — dry running, cavitation, magnet decoupling — and the 9-layer protection stack that catches it.

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Centrifugal Pump Failure in Abrasive Slurry

Why mechanical seals wear out fast in abrasive slurry, and the electric diaphragm pump + SCADA fix — a real mining case study.

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Chemical Tank Stress Cracking

Why a chemically-resistant tank can still crack — Environmental Stress Crack Resistance is a distinct failure mode.

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pH Dosing Overshoot

Why manual and poorly-designed pH dosing overshoots, and the automated equipment stack that fixes it — real numbers, 18-25% chemical overuse eliminated.

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Sodium Hypochlorite Valve Off-Gassing

Why standard ball valves trap and crystallize NaOCl, and the vent-hole design that prevents it.

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Cartridge Filter Blinding

Why filters clog faster than expected, and how to tell real blinding apart from a bypass problem that looks the same.

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Lime Slurry Pump Clogging

Why calcium hydroxide slurry hardens inside pumps and hoses between runs, and the peristaltic-hose fix — a real water-plant case, 10 clogs/yr to zero.

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Ultrasonic Level Sensor Failure in Dense Vapor

Why ultrasonic level sensors lose signal in dense chemical vapor inside tall storage towers, and the radar fix — a real bulk fertilizer storage case.

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CPVC Pipe Softening in Sulfuric Acid Injection

Why unmixed concentrated acid injection can soften a thermoplastic pipe wall, and the real variables that determine the outcome — reviewed by James Riggins.

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Sodium Hypochlorite Vapor Lock in Metering Pumps

Why NaOCl off-gassing causes lost prime, and the system-first fix — not just a pump-technology swap — reviewed by James Riggins.

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MagDrive Pump Dry-Run Bearing Failure

Why sealless doesn't mean dry-run-proof, and the protection that closes the gap — reviewed by James Riggins.

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Chemical Metering Pump Misapplied to Wafer-Contact Delivery

Why chemical-compatible isn't the same as UHP-qualified, and how to specify from the purity requirement backward — reviewed by James Riggins.

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RO Membrane Misapplied as Final UPW Polish

Why a rejection percentage alone doesn't establish final purity, and how to design the full downstream train — reviewed by James Riggins.

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UPW Valve Misapplied to Hot Acid Service

"High purity" isn't a universal chemical-compatibility guarantee — the specification correction with the biggest real-world stakes — reviewed by James Riggins.

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XLPE Tank Failure at 98% Sulfuric Acid

One tank manufacturer documents a 6-month field failure; another lists the same material as compatible with no caveat — a real vendor conflict, and what to confirm before you order.

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Valve Diaphragm Failure — Sulfuric Acid Heap Leach

A mining-rated valve body doesn't guarantee the diaphragm is rated the same — Netafim's own ALD70 diaphragm caps sulfuric acid at 38°C.

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Related
Chemical Guides →All Technical Guides →Case Studies →
FAQ

Frequently Asked Questions

What makes this different from the Chemical Guides or Technical Guides?

This library is organized around the failure mode itself — symptom, cause, mechanism, fix — regardless of which chemical or equipment category it touches. A chemical guide covers everything about one chemistry; a failure page covers everything about one way equipment breaks, often across multiple chemistries and equipment types.

Are these real, documented failures or generic troubleshooting tips?

Two real categories, and each page states plainly which one it is. Some are documented case studies with measured results, direct field quotes, and named equipment (like the 18-25% chemical overuse figure or the 10-to-0 clog-shutdown result). Others are specification lessons personally reviewed and corrected by James Riggins, LibertyCES's founder — real, defensible engineering principles, but not yet tied to a confirmed LibertyCES customer incident, and labeled as such on the page. Neither category is generic troubleshooting content.

Spec Review

Fighting a failure that isn't listed here?

Send LibertyCES your equipment, chemistry, and the actual failure symptom — we'll help identify the real mechanism.

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