Standard Practice for Cleaning of Thermoplastic Solid Wall 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 Thermoplastic 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 can generate variable water pressures up to 5000 psi (34 MPa) and variable flow rates of 50 gal per min (gpm) to 125 gal per min (gpm) (180 L per min to 473 L per min).

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

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

4.6 There are a 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 uses 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 49 Parts 106–107, 171–180, and 390–397.

Subcomité:

F36.20

Volúmen:

04.12

Número ICS:

23.040.20 (Plastics pipes), 93.030 (External sewage systems)

Palabras clave:

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