Maintenance of drums is limited to removal of such exterior components as large relief or control valves for off-site repair.
Handling of these items can be achieved by either by fixed davits or by mobile equipment.
Davit arrangement for tall vertical drums should be in accordance with tower requirements. Davits are not usually furnished at horizontal drums; if required, they should be arranged in accordance with those shown below.
Removal space should be provided above drums furnished with mixers. If the drum is located within a structure, a removable section of the floor above should be provided.