Corrective measures A description shall be available of the necessary actions after a disturbance has occurred. For actions which cannot be taken by the operator, it may be necessary to refer to the maintenance instructions. The manual shall state all requirements for reports to the supplier in the form of registrations and observations.Major repairs and modifications It is not normally required that this shall be covered by the instructions at the user's disposal. However the supplier shall keep and upon request provide instructions concerning overhaul and repairs at special shops. If agreed, the supplier shall also keep all documentation for modification or rebuilding of the equipment.5-147, SR-2739 - Safety layout drawings The drawings shall be prepared in accordance with the requirements below. There shall be sufficient main equipment on the drawing to easily identify the location of the equipment in question. Safety layout drawings should as far as possible use the same basis/background as other layout drawings. All equipment listed below shall be identified by:5-162, SR-2749 - Slewing ring/Foundation bolts tension table - Lifting appliances A table showing pre-tensioning / extension for each slewing ring / pedestal adapter / foundation bolts after final assembly shall be delivered. For bolts using pre-tensioning, the table shall include length measurements before and after pre-tensioning including allowable tolerances.