Table 2-3. Daily Predive Procedures

TM 5-4220-225-14 2-11. Daily Predive Procedures. The following procedures, Table 2-3, Daily Predive Procedures, shall be performed before the start of each days diving operations. WARNING Arbitrary omission of steps could result in equipment failure and possible injury. Table 2-3. Daily Predive Procedures. Step Procedure NOTE Equipment requirements will be tailored to each dive mission. A briefing by the dive supervisor will indi- cate the specific requirements and all equipment for diving should be assembled on the diving station, including necessary support equipment such as tools and repair parts.The equipment must be laid out in an orderly manner and inspected and tested in accordance with these procedures. 1. HELMET ASSEMBLY NOTE (External Checks) Always rest the helmet on a rubber mat when inspecting or testing.Place the helmet on a bench with the communication whip extended over the side to avoid sharp flexing of the whip. a. Shell and Base Inspection. (1) Check base for cracks and breaks. Select an alternate helmet if necessary. (2) Visually inspect for loose, missing or damaged screws and stripped threads.Tighten or replace as necessary. b. Viewport Assembly Inspection. (1) Inspect viewports for scratches and chips. Replace as necessary.Scratches 1/32-inch deep and more than 1 inch long require replacement of viewport. (2) Inspect the viewport retainers for cracks, warping, broken screws, and stripped threads. Replace as necessary. 2-31