Overhead and Underground Services
Locate services, apply owner-agreed precautions, control reach and excavation, and follow the emergency plan after contact or damage.
How to prepare for an NPORS category assessment
Build a safe explanation from machine identity and information through checks, work-area controls, operation, stop conditions and shutdown; then practise it using the selected category's current learning outcomes.
Core concepts
Concept 1
Locate services, apply owner-agreed precautions, control reach and excavation, and follow the emergency plan after contact or damage.
Exam cue: Confirm the exact NPORS category, machine, attachment and duty before applying a rule.
Concept 2
Check above, below and around using current plans, detection, marking, safe clearances, barriers, goalposts or isolation as the plan requires.
Exam cue: Check above, below and around using current plans, detection, marking, safe clearances, barriers, goalposts or isolation as the plan requires.
Concept 3
HSE warns that close approach can cause flashover and that underground plans must be combined with locating and safe digging practice.
Exam cue: Name the stop condition and the authorised person or source needed to proceed.
Concept 4
A drawing, wooden pole or insulated-looking component does not prove a line is dead or a service is exactly located.
Risk pitfalls and guardrails
Beginning mechanical excavation or raising plant before ownership, position and precautions are confirmed.
Guardrail: Do not replace manufacturer information, physical protection, a competent plan or site authorisation with experience or memorised wording.
Treating a scheme card as universal permission to operate.
Guardrail: Do not replace manufacturer information, physical protection, a competent plan or site authorisation with experience or memorised wording.
Replacing current manufacturer or site controls with memory from another category.
Guardrail: A similar machine or held card does not remove category, attachment or familiarisation requirements.
Memory anchors
Above, Below, Around
Services can affect travel and work in every direction.
Assume Live
Only the owner can establish isolation.
Plans Plus Detection
Use complementary evidence before disturbing the ground.
Overhead and Underground Services: Source
Confirm the current NPORS category outcomes, equipment instructions and workplace controls.
Overhead and Underground Services: Safe Boundary
Stop and escalate when the task, condition or decision exceeds the operator's competence or authority.
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
What are HSE's three basic elements for work near buried services?
What is the first preference for work near overhead lines?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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