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Maintenance & Quality

How Japanese plants run maintenance, safety, and quality routines.

47 guidesShowing 25–36

Maintenance & QualityFull-Bore vs Lift-Type Safety Valves: JIS Terms ExplainedLearn what lift type (yotei-shiki) and full bore type (zenryo-shiki) mean on Japanese safety valve datasheets, why capacity differs, and what to check.Oct 22, 2026Maintenance & QualitySafety Valve Sizing in Japan: JIS B 8210 vs API 520Learn how Japanese makers size steam safety valves under JIS B 8210, how it compares with API 520 and ASME, and what to check on a supplier's sizing sheet.Oct 22, 2026Maintenance & QualityThermal Trip: Why Thermal Relays Trip and How to ResetLearn why a thermal overload relay trips, how long it takes at each overload (trip class), why it won't reset, and what to ask your Japanese supplier.Oct 22, 2026Maintenance & QualityCentrifugal Pumps in Parallel: Why Flow Doesn’t DoubleLearn why two pumps in parallel don't double the flow, with a worked example, plus header sizing, mismatched pumps, NPSH, check valves, and a checklist.Oct 22, 2026Maintenance & QualityHot Water Loop Not Flowing? Check Fill, Air, Valves, PumpHot water loop not flowing? Check filling, closed valves, pump rotation, leftover blanks, trapped air, and pump head in order, with a worked example.Oct 22, 2026Maintenance & QualitySafety Valve Set Pressure vs. MAWP on Japanese EquipmentLearn how safety valve set pressure relates to MAWP, why a lower setting does not change a vessel's class in Japan, and how to check relief capacity.Oct 22, 2026Maintenance & QualityStar-Delta Starter: 1/3 Current, Torque, Timer SettingsLearn why a star-delta starter cuts starting current and torque to 1/3, how to set star time and dead time, and what to check when replacing the motor.Oct 22, 2026Maintenance & QualityRupture Disc vs Relief Valve: Differences and Combined UseLearn how a rupture disc differs from a relief valve, how backpressure shifts burst pressure, and what to check when using both in series or parallel.Oct 22, 2026Maintenance & QualityQuality Assurance Process at Japanese Plants: 8 StepsLearn the 8-step quality workflow at Japanese manufacturers, from quality plan and mass production approval to defect complaints, with key terms and questions.Oct 22, 2026Maintenance & QualityHozen in Japanese Plants: Maintenance Types, Roles, and TPMLearn what hozen (equipment maintenance) covers in Japanese plants: the maintenance team's duties, BM, TBM, CBM, CM and MP, the TPM pillars, and OEE.Oct 22, 2026Maintenance & QualityHow to Write an 8D Report: D0–D8 and the Toyota 8-StepLearn how to write an 8D report step by step: D0–D8, occurrence vs. escape root causes, actions customers accept, and how 8D differs from Toyota's 8-step.Oct 22, 2026Maintenance & QualityMaintenance Workflow at Japanese Plants: 8 Steps in 3 PhasesLearn the 8-step maintenance workflow Japanese plants use, from equipment criticality and annual plans to breakdown reports, why-why analysis, and plan review.Oct 22, 2026