Complete Training Material Framework for Four Types of Anti-Corrosion Heating Tubes (Fermentation Workshop Operator & Maintenance Technician Training)

A Comprehensive Training Material Framework for Four Types of Anti-Corrosion Heating Tubes (Fermentation Workshop Operator & Maintenance Technician Training) ## Chapter 1: General Basic Training Module (Required for All Trainees) 1.1 Course Objective and Training Target Group 1. Training objectives Master material characteristics, operation norms, patrol key points, common fault identification, basic emergency isolation, and GMP record filling requirements of four heating tubes; eliminate man-made misoperation, reduce equipment downtime, and batch contamination risks. 2. Trainees who are the Frontline fermentation operators, equipment maintenance technicians, QA inspectors, equipment management engineers, and new staff induction training. Universal Basic Theoretical Knowledge 1.2 1. The primary purpose of fermentation heating tubes is to meet the following requirements: medium temperature regulation, sterile heat exchange, and CIP heating auxiliary heat source. 2. General working condition parameters: operating temperature range, design pressure, and characteristics of the CIP acid/alkali disinfection medium. 3. General safety operation specification: Multi-level authority management of PLC interlock parameters, forbidden operation general rules, LOTO lockout-tagout rules before disassembly. 4. Universal GMP traceability requirements: equipment unique serial number management, patrol/maintenance/fault record entry norms, document storage cycle, and dual electronic-paper filing rules. 1.3 Practical Operation Training Items 1. The standard operation process for heating loops during startup and shutdown 2. Initial response to abnormal alarm: power interruption, valve isolation, sample retention, report submission 3. Standard procedure for completing patrol inspection forms, maintenance records, and fault disposal archives 4. General method of tube bundle surface defects: static visual inspection 5. Confirmation of the full-load trial run after maintenance 1.4 Universal Assessment Standards 1. Theoretical written examination (40 points): material fundamentals, safety regulations, and GMP archive requirements 2. Practical operation assessment (60 points): visual defect identification, record filling, alarm disposal, startup/shutdown Passing score: 70 points; personnel who are not qualified must undergo retraining and assessment prior to assuming their position. ## Chapter 2: Special Training Module for 316L Stainless Steel Heating Tubes 2.1 Theoretical Knowledge Points 1. The material characteristics of 316L stainless steel are as follows: a chromium-rich passive film anti-corrosion principle; the damage mechanism is driven by chloride concentrations exceeding 50 ppm and alkali temperatures exceeding 60℃. 2. Key control points in processing: argon back protection welding, post-weld polishing and passivation, and the hazards of mixed carbon steel contact without isolation. 3. Core attenuation law: the rule for the thinning of the wall thickness, weld pitting corrosion, and organic scaling changes as the service time increases. 4. Principle of system linkage support: automatic acid descaling program trigger logic, chloride online monitoring, exhaust flow monitoring, and alkali temperature interlock. 5. Full-life-cycle cost characteristic: low initial cost, high maintenance cost under continuous high-chloride working conditions. 2.2 Practical Operation Training on-Site 1. Inspection operation pre-start: exhaust valve inspection, PTFE isolation strip integrity check, and interlock signal confirmation 2. Segmented temperature rise operation control, heating power parameter monitoring and recording 3. Standard operation procedures for monthly online acid descaling 4. Ultrasonic wall thickness monitoring is conducted on a bi-monthly basis. auxiliary operation 5. Local supplementary passivation operation for rusted weld positions 6. Flow of long-term inactive cleaning, blow-drying, and sealed storage operations 2.3 Patrol Inspection & Fault Judgement Training 1. Key elements of shift patrol Identification: abnormal power surge, exhaust blockage noise, discolouration, rust spots 2. Typical defect feature recognition: weld pitting leakage, severe scaling overheating, and alkali over-temperature alarm 3. Fault grading disposal process: minor rust maintenance isolation, serious wall thinning application for replacement, and emergency tank emptying for leakage. 2.4 Special Training Focus on Forbidden Operations 1. Shielding the alkali temperature interlock alarm manually 2. Utilising metal scrapers and steel wire brushes to clean the surface of the tube bundle 3. Install tube bundles with an inclination of less than 12°, disregarding the obstruction of the exhaust branch. 4. Combine carbon steel supports without PTFE isolation strips. 2.5 Module Special Assessment Items 1. Theoretical enquiries: critical chloride concentration limit, alkali interlock temperature threshold, and minimum installation inclination 2. Practical operation: visual identification of rust defects, auxiliary cooperation for wall thickness inspection, and the commencement of the acid descaling program. ## Chapter 3: Special Training Module for Pure Titanium Heating Tubes 3.1 Theoretical Knowledge Points 1. Grade 2 pure titanium anti-corrosion mechanism: self-repairing TiO₂ passivation film in an oxygen-rich environment; irreversible uniform corrosion caused by trace fluoride ions. 2. Processing anti-pollution requirements: scratch-free polishing technology, high-purity argon welding, and an independent fluorine-free workshop. 3. The principle of galvanic corrosion between titanium and carbon steel necessitates complete PTFE isolation. 4. Control logic for the CIP aeration linkage: passivation repair mechanism for dissolved oxygen levels that exceed 8 mg/L, and fluoride dual interlock shutoff principle. 5. Advantages of GMP compliance: zero heavy metal ion precipitation, which is applicable to high-standard sterile pharmaceutical fermentation.