The Better Mouse Trap Co. / sample paperwork

Mouse Hotel design FMEA

Sample — fictitious company

Sample — fictitious company. All numbers and people are invented scenario assumptions. This is draft concept paperwork; no physical testing, customer evidence, certification, filing or sign-off has occurred.

Mouse HotelRevision C12026-10-24sample-draft16 entries
Mouse Hotel design FMEA
IDItem/functionRequirement IDFailure modeEffectSeverityCausePrevention controlOccurrenceDetection controlDetectionRPNRating basisRecommended actionOwnerTarget dateResultProjected SProjected OProjected DProjected RPNResidual status
DF01Capture doorR01Door rebounds after entryMouse escapes; repeated handling increases bite exposure7Hinge rebound and latch misalignmentAdd positive over-center latch and keyed hinge pin5Cycle rig then 5 N outward retention pull6210Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceAdd positive over-center latch and keyed hinge pinJordan Vale2027-02-15Not implemented or tested73484Projected residual only; open pending evidence
DF02Ventilation ribsR02Air paths blocked by nesting materialConfined mouse distress or death9Vents all located on floor near baitRaise vents on opposing walls; add no-bedding instructions4Occlude either vent bank with paper surrogate; inspect remaining airflow path7252Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceRaise vents on opposing walls; add no-bedding instructionsJordan Vale2027-02-15Not implemented or tested92590Projected residual only; open pending evidence
DF03Release sliderR03Finger enters closing-door pathPinch or bite during release8Grip next to opening and no positive open detentExtend external slider and add hold-open detent4Video-record unloaded representative-user task6192Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceExtend external slider and add hold-open detentJordan Vale2027-02-15Not implemented or tested82464Projected residual only; open pending evidence
DF04Washable shellR04Soiled corners retain contaminationUser exposure to rodent waste8Blind corners and poor disassemblyRound internal corners; detach door cassette; hygiene instructions5Fluorescent soil inspection after hand wash; biological efficacy not claimed6240Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceRound internal corners; detach door cassette; hygiene instructionsJordan Vale2027-02-15Not implemented or tested83496Projected residual only; open pending evidence
DF05Bait pocketR05Bait holder detachesSmall-part ingestion by child or pet9Uncaptured insert fits through entranceIntegrate pocket into shell; no loose insert3Force gauge pull and foreseeable misuse inspection6162Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceIntegrate pocket into shell; no loose insertJordan Vale2027-02-15Not implemented or tested91436Projected residual only; open pending evidence
DF06Occupancy inspectionR06User leaves occupied trap uncheckedAnimal dehydration and distress9Trap hidden and no inspection habitTransparent inspection window; explicit do-not-leave-unattended warning610-user visibility/teach-back study; no live animals before ethical review8432Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceTransparent inspection window; explicit do-not-leave-unattended warningJordan Vale2027-02-15Not implemented or tested946216Projected residual only; open pending evidence
DF07Entry baffleR07Second mouse opens occupied chamberEscape or animal injury8One-way baffle back-driven from insideSeparate entry vestibule with anti-backdrive stop5Probe each chamber loaded with surrogates in 50 cycles7280Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceSeparate entry vestibule with anti-backdrive stopJordan Vale2027-02-15Not implemented or tested835120Projected residual only; open pending evidence
DF08Occupancy sensorR08False empty statusUser neglects occupied enclosure9Dust fouls optical beamUse independent beam and weight checks; show uncertain as occupied5Injected beam blockage, drift and stuck-value cases8360Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceUse independent beam and weight checks; show uncertain as occupiedJordan Vale2027-02-15Not implemented or tested936162Projected residual only; open pending evidence
DF09Wi-Fi alert queueR09Alert never arrivesDelayed inspection harms captured animal9Router outage or mobile notification disabledOffline local indicator; queued alerts and no-cloud-needed manual checks6Router loss/reconnect and phone permission fault injection8432Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceOffline local indicator; queued alerts and no-cloud-needed manual checksJordan Vale2027-02-15Not implemented or tested946216Projected residual only; open pending evidence
DF10BLE provisioningR10Nearby stranger pairs to trapUnauthorized control and household occupancy disclosure8Shared default credentials and insecure pairingAuthenticated pairing; expiring setup window; no shared password5Threat-model-led unauthorized pairing attempts on test build8320Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceAuthenticated pairing; expiring setup window; no shared passwordJordan Vale2027-02-15Not implemented or tested836144Projected residual only; open pending evidence
DF11Firmware updaterR11Corrupt update disables occupancy indicationOccupied trap appears inactive9Power loss during single-bank flashingSigned dual-bank firmware with rollback and independent indicator4Interrupt update at 20 points; confirm last known good boot8288Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceSigned dual-bank firmware with rollback and independent indicatorJordan Vale2027-02-15Not implemented or tested926108Projected residual only; open pending evidence
DF12Rechargeable packR12Battery overheats during chargingBurn or fire10Unprotected cell, wet connector, charger faultProtected replaceable pack; keyed certified-candidate charger; thermal cutoff4Specialist battery fault evaluation; no destructive tests by unqualified users8320Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceProtected replaceable pack; keyed certified-candidate charger; thermal cutoffJordan Vale2027-02-15Not implemented or tested1026120Projected residual only; open pending evidence
DF13Electronics cassetteR13Wash water reaches PCBShock from faulty adapter or overheating9Electronics not removed before washSeparate dry cassette with keyed seal and wash label5Assembly interlock test and controlled splash screen; no IP rating claimed7315Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceSeparate dry cassette with keyed seal and wash labelJordan Vale2027-02-15Not implemented or tested935135Projected residual only; open pending evidence
DF14Account and cloudR14Household presence patterns retainedPrivacy loss after breach7Unbounded timestamp retentionLocal-first alerts; minimal pseudonymous event data; documented deletion5Review data flows and test account deletion across backups8280Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceLocal-first alerts; minimal pseudonymous event data; documented deletionJordan Vale2027-02-15Not implemented or tested736126Projected residual only; open pending evidence
DF15Radio module integrationR15Host changes invalidate RF assumptionsBlocked market access or interference9Antenna/layout differs from module conditionsFreeze antenna/layout; RF lab review before launch5Host pre-scan and authorization-path review; results not performed8360Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceFreeze antenna/layout; RF lab review before launchJordan Vale2027-02-15Not implemented or tested936162Projected residual only; open pending evidence
DF16Crowded chamberR16Animals compete or overheatInjury to trapped animals9Capacity inferred from volume without welfare evidenceIndependent compartments and ventilation; inhibit further entry if full5Surrogate occupancy/thermal analysis first; ethical live study only if approved8360Proposed ratings: severity based on effect; occurrence uncertain concept exposure; detection weak without physical evidenceIndependent compartments and ventilation; inhibit further entry if fullJordan Vale2027-02-15Not implemented or tested936162Projected residual only; open pending evidence