Information must be immediately available beside the equipment
Aliases: point-of-use documentation · asset identification · point-of-work documentation
What it is
Point-of-work information access lets personnel obtain drawings, procedures, parameters, and history matching the current asset and configuration right beside the target equipment, without leaving to consult a source or continuing from memory. "Immediate" means the information lands within the decision window, not merely that everything is stored somewhere in one terminal — a system with complete content that takes ten screens to reach the one entry needed right now still fails the immediacy test.
Why it happens
Leaving the equipment to look something up costs more than travel time: it breaks the visual anchor, and re-locating the corresponding part or indicator on return is itself a source of error, especially when similar units sit side by side and the wrong one gets picked up again. Continuing from memory turns version numbers, parameter details, and step order — things an external record should be carrying — into a recall burden, and recall selectively loses detail under stress and fatigue without the person noticing. Binding asset identification (a QR code, an RFID tag) to controlled content shortens the lookup path and genuinely lowers average lookup time, but it introduces a new risk: the tag itself can be mislabeled, worn, or matched to the wrong asset revision — and the very smoothness of "scan and see the content" lowers a person's inclination to doubt what appears. The smoother the lookup experience, the more it needs an independent configuration check as a backstop, or that smoothness becomes a fast channel for spreading the wrong information.
Studying it
Under real inspection routes, target PPE, and actual network conditions, measure the time from "information need arises" to "correct-version content obtained," the count of wrong-asset identifications, task interruptions, and rework caused by mismatched information. The test set must include side-by-side similar equipment, a recent modification whose label was not yet updated, and an urgent lookup simulating an alarm response — not just a routine, unobstructed inspection path. One easily overlooked check: a successful scan or lookup does not mean the content is correct — evaluation should separately verify that the displayed content matches the equipment's actual configuration, not just log that some document was retrieved.
Where it stops holding
In an explosive atmosphere or a high-radiation area, what equipment can be carried and how it can be used is itself restricted, and sensitive process or safety data may require access control — both can limit the ideal of "anyone can open it right beside the equipment." The field entry point itself (a QR code stuck on the equipment) cannot substitute for the controlled document source as the authority: if the label is damaged, the code's link is dead, or the equipment's identity is in doubt (a missing nameplate), the correct response is to stop and run an independent verification, not to make do with whatever alternative view is available. For faults complex enough to require synthesizing several systems' data, a field terminal's small screen still cannot replace a control-room large display or remote expert support — point-of-work access solves routine information retrieval, not every information-intensive task.
Applying it
- Bind assets to their controlled information source with a durable, wear-resistant unique identifier, and always show the content's version number and last-update time alongside it, so a person can judge currency before acting on it.
- Surface content directly relevant to the current task first — the parameters and diagrams for the current step — and treat full drawings, history, and related documents as optional drill-down, rather than dumping everything at once and creating a new search burden.
- How to check: test with a deliberately mislabeled tag, a disconnected network, and a visually similar neighboring asset, and observe whether personnel notice the asset mismatch and stop using the displayed content, rather than continuing to act on the wrong information.