Drainage RAMS — Risk Assessments for Below-Ground Drainage Works
Generate comprehensive RAMS documents for drainage installation, repair, and maintenance. Covers excavation and trench work, pipe laying, manhole construction, CCTV surveys, confined space entry, and contaminated ground — with attention to trench collapse prevention.
What a Drainage RAMS Covers
- Excavation and trench work – trench support systems, shoring, battering, and collapse prevention
- Pipe laying – bedding, laying, jointing, and backfilling of foul and surface water drainage
- Manhole and inspection chamber construction – precast concrete, brick-built, and plastic chambers
- CCTV drainage surveys – remote camera inspection of existing systems
- Confined space entry – entry into manholes, sewers with gas monitoring and rescue plans
- Underground service detection – CAT and Genny scanning before excavation
Drainage Regulatory Framework
- CDM 2015 – management of health and safety during groundworks and drainage
- Confined Spaces Regulations 1997 – entry into manholes, sewers, and chambers
- HSE HSG185 – health and safety in excavations
- HSE HSG47 – avoiding danger from underground services
- COSHH Regulations 2002 – contaminated soil, sewer gases (H²S)
- Building Regulations Part H – drainage and waste disposal
Frequently Asked Questions
- What are the main risks in drainage excavation?
- Trench collapse, striking underground services, flooding, contact with contaminated soil, exposure to sewer gases including hydrogen sulphide, and manual handling of heavy pipes.
- When is confined space entry required?
- When entering manholes, inspection chambers, sewers, or enclosed structures where there is risk from lack of oxygen, toxic or flammable gases, or drowning.