The material to be removed is only part of the job. Pipe or surface condition, access, isolation, washwater recovery and the finish required can all change the method.
Deposit and process: what the material is, how it formed and any useful product or sample information.
Pipe or surface: dimensions, construction, condition and any coatings, linings or previous repairs.
Work area: access, isolation and whether the equipment can be taken out of service.
Recovery and finish: how solids and washwater will be collected, and how the finished work will be checked.
Reference sources for this library
These references cover the applications, safety points and environmental limits used across the library. Manufacturer material describes the named equipment or application, not whether it is suitable for every job. Regulatory and safety guidance is used only within its stated scope.
Concrete, mortar and cement washings behave differently in drains. Removal has to clear the obstruction without causing unacceptable damage to the pipe.
Chemical process deposits need reliable information about the material before water jetting or washing is chosen. Water cannot be assumed to be compatible with an unidentified process residue.
