16-001014-02A (Ultimate SCMMP)

    Maintenance procedure

    Maintenance of Humegard® units is generally performed           It may be convenient on larger units to de-water some
    using vacuum/eduction trucks.                                   of the water in the holding chamber. This will minimise
                                                                    maintenance costs as disposal of essentially clean
    No entry into the unit is required for maintenance. The         stormwater can be avoided. Often this can be done
    vacuum service industry is a well-established sector, that      onto adjacent ground or into the council sewer system.
    services underground tanks, sewers and catch basins.            However, this should only be done with the appropriate
                                                                    authorities’ consent.
    HumeGard® units are cleaned by adhering to the
    following steps:                                                If a HumeGard® has been fitted with an optional
                                                                    removable basket, the basket can be used to periodically
    1.   Complete a Job Hazard Analysis (JHA) and a Work
                                                                    remove litter in between scheduled eduction/vacuum
         Method Statement (WMS) before undertaking the
                                                                    maintenance visits. The baskets must also be removed
         maintenance procedure.
                                                                    prior to vacuuming/educting the HumeGard® for the
    2.   Prepare the site around the Humegard for cleaning.
                                                                    sediment load.
         This involves establishing the job site (traffic control
         if required), assembling cleaning equipment,
         positioning the vacuum truck and ensuring correct
         equipment is available to use (including PPE).
    3.   Remove the rectangular lid above the holding
         chamber and conduct a visual inspection to assess
         the condition of the Humegard® and note if there are
         any blockages or lodged debris.
    4.   Lower the suction hose to the surface of the water in
         the holding tank and skim across the top to capture
         floating litter.
    5.   Lower the suction hose to the base of the holding
         chamber to remove sediment, organic matter and
         litter which has sunk.
    6.   Dislodge materials trapped in the screen using a
         water jet or brush/broom.
    7.   Remove the second rectangular access cover over the
         diversion boom and ensure there is no debris trapped
         underneath the boom.
    8.   Clean the interior of the pit using water jet.
    9.   Replace lids, ensuring they are firmly and securely in
         place.




5   HumeGard® GPT