No. This section applies to "Devices, appurtenances, appliances and apparatus intended to serve some special function..." not to sanitary or grease lines. Examples given are of systems that "discharge (condensate) to the drainage system". There's nothing in this section that would require secondary protection as mentioned in the request. There may be some other requirement such as Health Department rules that could warrant this protection.
No. The plumbing code no longer prohibits sanitary, grease, or other plumbing lines from being installed directly above commercial kitchens or food prep areas. Secondary protection of such piping is not required by Section 801.2 or any other code section.