Locator Selection, Systematic Use and Marking
Judge whether suitable, checked locating equipment is used systematically and findings are marked clearly.
How to prepare for supervisor assessment
Build the technical knowledge needed to judge work, then rehearse the supervisor evidence loop: review, observe, compare, intervene, record and verify.
Core concepts
Concept 1
Equipment selection depends on expected apparatus, environment, access and available signal modes.
Exam cue: Scan in more than one direction and mode where appropriate.
Concept 2
Pre-use checks, calibration status and systematic sweeps support reliable interpretation.
Exam cue: Trace and repeat rather than accepting one response.
Concept 3
Markings communicate route, confidence and exclusion information without creating false precision.
Exam cue: Keep markings visible and explain their meaning.
Risk pitfalls and guardrails
Using an unverified locator.
Guardrail: Do not treat a card, checklist or previous site as proof that the current work complies; inspect the evidence and close every defect.
Assuming no signal means no service.
Guardrail: Do not treat a card, checklist or previous site as proof that the current work complies; inspect the evidence and close every defect.
Marking an exact depth that has not been proven.
Guardrail: Do not treat a card, checklist or previous site as proof that the current work complies; inspect the evidence and close every defect.
Memory anchors
Select, Check, Scan
Match equipment and prove readiness.
Cross the Route
Use systematic passes from different directions.
Trace Before Trust
Confirm continuity and repeatability.
Mark Confidence Honestly
Do not imply certainty the evidence lacks.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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