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URS-QUA-001: Quality and Statistics

Property Value
ID URS-QUA-001
Version 1.0
Status Draft
Bounded Context Quality
Author
Approved By
Date

BR Traceability

URS Requirement Business Requirement arc42 Reference
URS-QUA-001.1 BR-04 arc42/06 s6.6
URS-QUA-001.2 BR-04 arc42/01 s1.1
URS-QUA-001.3 BR-04, BR-07 arc42/01 s1.1
URS-QUA-001.4 BR-04 arc42/01 s1.1
URS-QUA-001.5 BR-04, BR-06 arc42/08 s8.11

Scope

The Quality bounded context handles measurement recording, message management, and statistical analysis for manufacturing processes. It supports multiple measurement types and provides real-time notifications.

Requirements

URS-QUA-001.1: Record Measurements

Description: The system shall record quality measurements for multiple types (EGP, Kann, Length, Valve, etc.) with order/serial traceability.

Acceptance Criteria: - Record measurements with type, value, order number, and serial number - Support measurement types: EGP, Kann, Length, Valve, Camera, CMMT, Force, Pressure, Temperature, Weight (see arc42/12 - Glossary) - Each measurement receives auto-generated UID and CRC - Measurements are linked to the originating process

GxP Relevance: Direct Risk Class: High

URS-QUA-001.2: Current Message Management

Description: The system shall manage a queue of current messages that can be added, removed, and listed.

Acceptance Criteria: - Add a message to the current message queue with message ID and timestamp - Remove a message from the queue - List all current messages - Messages are persisted in the statistics database

GxP Relevance: Indirect Risk Class: Low

URS-QUA-001.3: Message Archiving

Description: The system shall archive messages with timestamp and rising edge flag for historical traceability.

Acceptance Criteria: - Archive a message with its metadata - Rising edge flag indicates message activation - Archived messages are timestamped and include creator - Historical messages are queryable

GxP Relevance: Direct Risk Class: Medium

URS-QUA-001.4: Process Statistics Calculation

Description: The system shall calculate process statistics including count, OK/NOK rate, and cycle time (min/max/avg).

Acceptance Criteria: - Calculate total process count for a given time period - Calculate OK/NOK ratio - Calculate cycle time statistics: minimum, maximum, average - Statistics are calculated from recorded measurement data

GxP Relevance: Indirect Risk Class: Low

URS-QUA-001.5: Real-Time Message Notifications

Description: The system shall provide real-time notifications when current messages are added or removed.

Acceptance Criteria: - Publish events when a message is added to the current queue - Publish events when a message is removed from the current queue - Events are consumable via GraphQL subscriptions (WebSocket) - Events include message ID, timestamp, and change type (Added/Removed)

GxP Relevance: Supporting Risk Class: Low

References