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Critical Assembly Safety and Audit Methodology Disclosure Number: IPCOM000249246D
Publication Date: 2017-Feb-14
Document File: 3 page(s) / 92K

Publishing Venue

The Prior Art Database


This disclosure provides a system and method for recording critical elements of assembly, preventive maintenance, and/or inspection results into an auditable ledger, to ensure accepted understanding of current condition and successful tracing of conditions over time.

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Critical Assembly Safety and Audit Methodology

This disclosure addresses safety and auditability for critical assemblies, including but not limited to aircraft, theme park rides, construction cranes, and other critical mechanical and structural objects.

Such assemblies are put together from many different parts, and accordingly, much effort goes into ensuring the correct initial assembly as well as subsequent manual or automated checks. The proposed solution makes sure the initial assembly is correctly done and logged, and that functional or structural changes to the assembly can be detected and reported.

This approach will be of interest and value to many parties, including: · Assembly developers / manufactures (was it done right the first time) · Assembly purchasers (e.g, automated and proactive inspection) · Government and consumer protection bodies (is it safe to operate the

assembly?) · Insurers (risk assessment, post accident analysis) This idea tracks nuts, bolts, and other fasteners used to connect mission

critical assemblies. The most critical connectors will be instrumented, with appropriate devices. These devices may include accelerometers, thermometers, torque sensors, compass, and / or visual, RF, or other related environmental sensors. It will track all information regarding the correct placement of legitimate parts and ambient environment, and all information on contextual changes regarding the part (vibration, temperature, orientation, etc). In doing so, the idea ensures safe placement and allows for easy and rapid safety validation. In addition, pro-active alerts can be sent out instead of waiting for scheduled inspection, in accordance with best Preventive Maintenance practices.

NOTE: nuts and bolts are used as examples above, but any other type of fastener could be substituted. See for other examples.

Different manufacturers which contribute parts to the assembly will be required to log part status to the same blockchain. There could, for example, be a 'public buildings blockchain,' or conversely a different blockchain for each building. Analogously for other structures, all manufacturers attach their respective parts to the chain, upon creation of the part and upon each change to the part. Blockchain-based solutions are useful in this case because:

1. Each party (company, government) involved in the assembly (providing parts or performing maintenance) today maintains its own private database (their own view);

2. Diverse parties are involved in complex structures; and each today maintaining its own database prohibits any single party from having an overall view;

3. There is a public safety benefit in having an open and shared log of all operations and changes on the assembly;

4. Smart contracts can check and enforce assembly rules (e.g. which part can be connected to which other part, is it okay to swap one type with another, etc).


It is noted that the sizes of computational devices...