 Security guard (watchmen)   Fencing and barriers   Outside lightning  The Contractor shall be required to provide security guards after normal working hours to guard all  utilities, plants, equipment, material, etc. delivered on site and to ensure that all signs, lights,  fences, etc. are in their proper place. The watchmen shall be responsible to guard all work carried  out under this Contract, including part of the works that may have been taken over by the  Employer, as well as to guard any goods or materials provided by the Employer for use in the  works falling under this Contract. The provision of security guards shall continue until all the  works have been taken over by the Employer.  The Contractor is to provide, install and maintain suitable barriers and fences to protect the work,  construction camp, storage yard, existing facilities and construction and installation operations and  to remove same when no longer required by the Employer, or at completion of work.  Barriers shall be chain link fencing 2.0 m high and in good condition and shall comply fully with  4_Vol3_d4.3_Section 4 General Requirements_en_GIR_rev6  4.9 Security of the Site  4.8.3 Progress Photographs  13 of 40 Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 04: General Requirements for the Execution and Completion of the Works  • Safety statistics, including details of hazardous incidents and activities relating to  environmental aspects and public relations; and  • Comparisons of actual and planned progress, with details of any aspects which may  jeopardize the completion in accordance with the Contract, and the measures being (or to  be) adopted to overcome such aspects.  • Financial and physical progress schedule;  • Cash flow forecast based upon the forecasted progress of the works;  • Photographic report of progress.  • Any events, difficulties and problems arose during the reporting period.  • The approval of monthly progress reports shall be a condition of the acceptance of an  Interim Payments statement for the relevant month as required in sub-clause 14.3.  • Reports’ attachments including forms of Site instructions, supplier approval, material  approval, material inspection, health & safety, commencement of works, construction  inspection, and equipment installation. • Reports’ attachments including daily and weekly site reports including records.  The Contractor shall periodically (as a minimum at weekly intervals) take photos that will show  the works progress, to show works that will be hidden later on and to support any claims etc. The  photos shall be taken on his expense. The Contractor will provide the Engineer with 2 copies in  10x15 cm format plus electronic form on CD-ROM in "jpeg" format. Each photo will be with date  and accompanied by a comment. Aerial photographs shall also be provided on his expense.  (Yellow Book, Sub-Clause 4.22)  The Contractor shall provide following measures as minimum for security of the site as described  below. 