Operating a fiber closure and splicing in it requires a few simple steps. First, you must prepare the fiber closure by removing the cover and the splice tray, if necessary. Next, you must inspect the fiber closure for any damage or debris. Once the fiber closure is ready, you must thread the fiber cables through the closure and secure them with the cable clamps. After that, you can begin splicing the fibers. This involves stripping the fibers, cleaving them, and then splicing them together using a fusion splicer. Finally, you must place the spliced fibers into the splice tray and then close the fiber closure. Once the fiber closure is closed, you can test the spliced fibers to make sure they are working properly. Following these steps will ensure that your fiber closure and splicing are done correctly.