Maintaining buildings crossword

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Across
  1. 3. The process where all maintenance and servicing are planned in advance with time allocated to specific tasks and resources, with stock ordered in preparation(7,11)
  2. 4. Welsh translation for 'Benefits'
  3. 7. Colourless, odourless gas, that can be released if fuel burning appliances are not regularly maintained(6,8)
  4. 9. What type of maintenance can best be described as a risky strategy ?
  5. 10. These are often set up with external specialist contractors to regularly maintain air conditioning systems, electrical testing and certification, gas appliances etc(7,5)
  6. 12. One of the benefits of carrying out regular maintenance to a building includes, ensuring the security and --------- of the building is maintained.
  7. 13. Someone employed by a company to carry out small maintenance tasks(5,6)
Down
  1. 1. Welsh translation for 'Integrity'
  2. 2. Small group employed by large companies to carry out routine maintenance tasks, painting and decorating, non-structural repairs etc(10,4)
  3. 4. Word to describe the process of keeping a building in good condition, safe, and functional through a range of activities such as regular cleaning, inspections, repairs, and system upkeep.
  4. 5. Welsh translation for 'Maintenance'
  5. 6. There are many -------- of a planned maintenance programme, compared to being unplanned.
  6. 8. There are many ------------- to having an unplanned maintenance strategy.
  7. 11. One of the benefits of carrying out regular maintenance to a building is that, it ensures a safe and pleasant ----------- for the occupants.