Define Diving Equipments for Underwater Inspection of Bridge?

Generally two types of diving, Scuba diving and surface supplied air diving, is employed in underwater inspection of bridges. In Scuba diving, air supply is provided by the pressure tank carried by the diver. Surface supplied air diving equipment includes a compressor, which collects and pumps air into a volume tank for storage. The compressed air is regulated to the diver through a hose, which passes through an air filter. The hose is part of a tether, which includes a safety line, communication line and Pneumofathometer hose.

The Pneumofathometer provides depth measurements to the surface. A reserve air tank may also be carried by the diver for emergency. In addition to above, following personal equipments are required with the diver:

- Exposure suit (wet or dry)

- Face mask or helmet

- Breathing apparatus

 - Weight belt

- Swim fins

- Knife

 - Wrist watch

- Buoyancy compensator (a floatation device capable of maintaining a diver face up at the surface)

- Depth gauge

- Pressure gauge