[step-manufacturing] EXTERNAL: Notes on Serial numbers
De Nijs, Jan
jan.de.nijs at lmco.com
Mon Jul 18 08:06:44 EDT 2022
When it comes to serial numbers: Yes, there is a move to add more and more significance to the "human-readable" serial number. If this is the only way to identify a specific instance of a part number, then this will inevitably lead to inconsistencies again. Just like what happened with part numbers.
In my view, there need to be 2 things, when it comes to serial numbers:
1. A human readable form.
This one can have as much significance as the user desires. Have it identify product, where it was made, when it was made etc etc.
2. A UUID to track this specific instance.
This number would be used by the applications to identify specifically which part we're dealing with.
The combination of both will always be unique. The human readable will inevitably lead to duplication, or massive inconsistencies when people are encouraged to re-use design on other assemblies.
I am advocating for human-readable/UUID combinations for many identifiers such as:
1. Part Number
2. Serial Number
3. Engineering Requirement
4. Shop Order Number
5. Person operating the equipment
6. Etc.
We are still in a world where we do a lot of the manufacturing orchestration by hand. That drives the need for human readable forms of these identifiers. But long term, as orchestration processes get automated, there is a need for UUID's. Since humans are going to be always in (or at the very least close to) the loop, human readable forms are important. But the inconsistencies that that brings, need to be countered by a UUID, which will take a more and more central role as automation get s introduced.
Jan de Nijs
LM Fellow
Enterprise Digital Production
Lockheed Martin
Tel: (817) 762 2425 | Mobile: (817) 996 1552
Lockheed Martin <http://www.lockheedmartin.com/>
From: step-manufacturing <step-manufacturing-bounces at steptools.com> On Behalf Of Thomas Thurman
Sent: Friday, July 15, 2022 10:49 AM
To: step-manufacturing at steptools.com
Subject: EXTERNAL: [step-manufacturing] Notes on Serial numbers
Dear All,
Some information on serial numbers:
I asked Phil Spiby about serial numbers in application of life-cycle support and he mentioned two methods for as-built product he was aware of:
A-use the serial number as the product identifier
B-use a classification approach to not only add serial number but also organizational information.
ISO/TS 10303-1147:2019 Application module: Manufacturing configuration effectivity
is of interest.
A partial extract is provided for reference.
Best Regards,
Tom Thurman
scope:
This part of ISO 10303 specifies the application module Manufacturing configuration effectivity. The following are within the scope of this part of ISO 10303:
* serial number-based condition for the use of a component in a product proposed to market;
* production lot number-based condition for the use of a component in a product proposed to market;
* production date-based condition for the use of a component in a product proposed to market.
Here are the ARM definitions
4.2 ARM entity definitions
This subclause specifies the ARM entities for this module. Each ARM application entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entities and definitions are specified below.
4.2.1 Dated_configuration [EXPRESS-G] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm> [Mapping table] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitydated_configuration>
A Dated_configuration is a type of Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration> whose effectivity domain is a time interval.
The interval of time during which the Product_specification<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification> has been, is, or will be produced.
EXPRESS specification:
*)
ENTITY Dated_configuration
SUBTYPE OF (Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration>);
SELF\Item_usage_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity>.effectivity_domain : Dated_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.dated_effectivity>;
END_ENTITY;
(*
Attribute definitions:
effectivity_domain: the Dated_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.dated_effectivity> that defines the effectivity domain.
4.2.2 Lot_configuration [EXPRESS-G] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm> [Mapping table] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitylot_configuration>
A Lot_configuration is a type of Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration> whose effectivity domain is identified by a production lot identifier.
The lot is a production lot of the Product_specification<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification> under consideration.
EXPRESS specification:
*)
ENTITY Lot_configuration
SUBTYPE OF (Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration>);
SELF\Item_usage_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity>.effectivity_domain : Lot_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.lot_effectivity>;
END_ENTITY;
(*
Attribute definitions:
effectivity_domain: the Lot_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.lot_effectivity> that defines the effectivity domain.
4.2.3 Manufacturing_configuration [EXPRESS-G] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm> [Mapping table] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitymanufacturing_configuration>
A Manufacturing_configuration is a type of Item_usage_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity> that specifies a condition for the use of a Product_occurrence<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/product_occurrence/sys/4_info_reqs.htm#product_occurrence_arm.product_occurrence> in a product represented by an instance of Product_specification<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification>.
Only specializations of Manufacturing_configuration shall be instantiated.
EXPRESS specification:
*)
ENTITY Manufacturing_configuration
ABSTRACT SUPERTYPE OF (ONEOF (Serial_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.serial_configuration>,
Dated_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.dated_configuration>,
Lot_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.lot_configuration>))
SUBTYPE OF (Item_usage_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity>);
concerned_organization : SET[0:?] OF Organization<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/person_organization/sys/4_info_reqs.htm#person_organization_arm.organization>;
WHERE
WR1: ('MANUFACTURING_CONFIGURATION_EFFECTIVITY_ARM.' + 'PRODUCT_SPECIFICATION') IN TYPEOF(resolved_configuration.configuration);
WR2: ('PRODUCT_OCCURRENCE_ARM.' + 'PRODUCT_OCCURRENCE') IN TYPEOF(item_usage_relationship\View_definition_relationship.related_view);
END_ENTITY;
(*
Attribute definitions:
concerned_organization: the set of Organization<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/person_organization/sys/4_info_reqs.htm#person_organization_arm.organization> for which the Manufacturing_configuration is valid.
In the case where the concerned_organization is an empty set, the Manufacturing_configuration is relevant to any organization that may consider the proposed product.
Formal propositions:
WR1: The context for which the configuration conditions are characterized shall be a Product_specification<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification>.
WR2: The object for which a conditional use case is specified shall be a Product_occurrence<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/product_occurrence/sys/4_info_reqs.htm#product_occurrence_arm.product_occurrence>.
4.2.4 Serial_configuration [EXPRESS-G] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm> [Mapping table] </Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentityserial_configuration>
A Serial_configuration is a type of Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration> whose effectivity domain is an interval of serial numbers.
The serial numbers of the Product_specification<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification> under consideration are in the given interval of serial numbers.
EXPRESS specification:
*)
ENTITY Serial_configuration
SUBTYPE OF (Manufacturing_configuration<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration>);
SELF\Item_usage_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity>.effectivity_domain : Serial_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.serial_effectivity>;
END_ENTITY;
(*
Attribute definitions:
effectivity_domain: the Serial_effectivity<file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.serial_effectivity> that defines the effectivity domain.
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