Internal Course List CCTV COMB – CCTV Combined (Operator & Supervisor) CCTV OP – CCTV Operator CCTV SUP – CCTV Supervisor CLASS A – Class A Awareness HPWJA – MSMSS00017 Use high pressure water jetting equipment HPWJA REF – MSMSS00017 Use high pressure water jetting equipment – REFRESHER HPWJO – MSMSS00018 Operate a high pressure water jetting system HPWJO REF – MSMSS00018 Operate a high pressure water jetting system – REFRESHER DC – MSMSS00019 Operate a drain cleaning system DC REF – MSMSS00019 Operate a drain cleaning system – REFRESHER VAC – MSMSS00020 Operate a vacuum loading system NDD – MSMSS00021 Operate a hydro excavation system WC – Prepare to work safely in the construction industry W@H – Working safely at heights