Generate RAMS for excavation near underground services in the UK. Covers cable strikes, gas mains, water pipes, and permit to dig requirements.
Frequently asked questions
- Do I need a permit to dig near utilities?
- Most principal contractors and utility companies require a formal permit to dig before any excavation near known services. The permit typically requires confirmation that service drawings have been reviewed, CAT scans completed, and safe digging methods specified.
- What is a CAT and Genny scan?
- A Cable Avoidance Tool (CAT) detects electromagnetic signals from buried cables and pipes. A Signal Generator (Genny) applies a signal to specific services so they can be traced. Together, they are the standard method for locating underground services before excavation.
- How close can I dig to a buried cable?
- HSG47 recommends hand digging within 500mm of the indicated position of a buried cable. No mechanical excavation should take place within this zone. The exact requirements may vary depending on the voltage and the utility owner's specifications.
- What should I do if I strike a cable?
- Stop work immediately. Do not touch the cable or any exposed conductors. Evacuate the area and establish an exclusion zone. Contact the utility owner and site management. Do not attempt to reconnect or repair the cable.