Standard Practice for Cleaning of Vitrified Clay Sanitary Sewer Pipelines

Importancia y uso:

4.1 Hydraulic cleaning methods include equipment that uses water and water velocity to clean the invert and walls of the vitrified clay sewer pipe.

4.2 The practice of high-velocity sewer cleaning is best described as a hydraulic cleaning method that uses water pressure to remove obstructions and deposits in sewers or storm drains.

4.3 There are different configurations of high-velocity sewer cleaning machines. These units have the capability of generating variable water pressures up to 3500 psi (24 MPa) and variable flow rates of 50-125 gal per min (gpm) (180-473 L per min).

4.4 The water tank capacity on these units varies from 1000-1500 gal (3785-5678 L).

4.5 The hose lengths vary between 500 and 1000 ft (152 and 305 m) in length with a diameter of ³/₄- 1¹/₄ in. NPT.

4.6 There are number of different nozzles and tools that may be used during the cleaning process.

4.7 Some high-velocity sewer cleaners have a vacuum conveyance system that use large fans or positive displacement vacuum pumps for material removal capabilities. With this type of system, material can be vacuumed from the manhole into a debris tank as it is brought back with the jet or tool and taken to a disposal area. These systems can be either trailer or truck mounted and are generally known as combination machines.

4.8 The Occupational Safety and Health Administration (OSHA) has set guidelines for the safe removal of hazardous and nonhazardous substances as stated in OSHA Section 5 of Public Law 91-596; OSHA 29 USC 654; 29 CFR 1910.120; as well as DOT CFR Parts 106-7, 171-180, and 390-397.

Subcomité:

C04.20

Referida por:

F2019-22, F2304-22, F1867-22, F2599-22, F1743-22, F1741-22

Volúmen:

04.05

Número ICS:

91.140.80 (Drainage systems)

Palabras clave:

high-velocity water cleaning; hydro flush; mechanical cleaning; nozzle; pipeline; power rodder; proofing skid; safety; sanitary sewer; sewer; sewer cleaning; sewer spill prevention; standard operating procedure; VCP; vitrified clay pipe; water jetting equipment;