What the service should include
The engineer combines accessible chambers, camera direction, signal location and property observations to build a usable route plan.
- Confirm the affected system and access
- Assess hazards and previous treatments
- Explain the proposed method
- Check the result before leaving
Questions, evidence and outcome
The deliverable should identify known access, route, depth where measured and any unverified section rather than implying false precision.
- Which locating method will be used?
- Will depth and route be marked or drawn?
- Are uncertainties clearly recorded?
Step-by-step approach
- 1
Describe every symptom
- 2
Disclose products and previous work
- 3
Agree scope and price basis
- 4
Ask how the result will be verified
- 5
Keep footage, reports and repair recommendations
Tell the engineer about every chemical or home treatment already used. Hidden corrosive liquid can put people at risk when a pipe or trap is opened.