When glass is used, must be durable, break resistant or heat resistant glass. Some applications where glass is used are light and sight openings into vessels and in very limited glass piping applications.
It is not suitable for lining metal equipment, nor is enamel being subject to chipping, thus exposing to metal, which may then corrode. Glass or enamel chip may also become incorporated in food.
Food plants should adopt a glass policy that outlines requirements for shielding fluorescent tubes and light bulbs in process areas, for protection or removal of glass gages, emergency lights, thermometers and wall clocks , for control of glass containers in process areas, for the safe use of laboratory glass ware, and for handling breakage of glass packaging materials.
If standards glass were used it should have a protective film on its surface to prevent shattering on breakage.
Potential glass contamination in processing area
