Whsmp · OPW16/0021

                                                                                   SWMS:07 – Excavation & Trenching
Safe Work Methods
                                                                                                                                                          Responsible
                                                                               H                         Controls / Work Methods                                           Residual Risk
                                                                                                                                                          Person/s for
          Job Steps                   Potential Hazards       L    C    R      O                  1. Eliminate 2. Substitute 3. Isolate 4. Engineer
                                                                                                                   5. Admin 6. PPE
                                                                                                                                                           Monitor &
                                                                               C                                                                                           L    C    R
                                                                                                                                                            Review
                                                                                      A geotechnical engineer is to be engaged to determine (in
                                                                                       writing) whether the excavation would reduce the stability
                                                                               5       of any nearby structures.
                                                                                      Controls specified by the engineer to prevent a person’s
                                                                                       exposure to collapse or partial collapse of the structure are
                                                                                       to be implemented and maintained.
                                                                               5
                                                                                      Excavation & Penetration Permit to be completed prior to
                                                                                       any hot work activities being undertaken on site
                                 Excavation collapse          C    4    E             The excavation is to have appropriate controls in place to       Competent         D     4    H
                                                                       18              protect persons from being exposed to a collapse of the          Person                       14
                                                                                       excavation. These controls are to include one of or a
                                                                                       combination of the controls outlined below:                      Geo-Technical
                                                                                         a)   Shoring all sides of the trench by shields or another     Engineer
                                                                                              way (Note: shoring to be engineer designed);
                                                                               4
                                                                                         b) Benching all sides of the trench;
                                                                                         c)   Battering all sides of the trench;
                                                                               4         d) Having a geotechnical engineer approve in writing all
                                                                               4            sides if the trench as safe from collapse, and state in
                                                                               4            writing how long the approval lasts if there is no stated
                                                                                            natural occurrence that could affect adversely the
                                                                                            stability of the trench and state in writing the natural
                                                                                            occurrences that could affect adversely the stability of
                                                                                            the trench.




584 Milton Road TOOWONG QLD 4066                          SWMS Developed by:       Jamie Gilbert                                                            VERSION 8 – September 2015
P: (07) 3335 5000 F: (07) 3335 5005                       Position:                National HSE Coordinator                                                                    Page 53
ABN: 52 009 778 330