Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p46
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 118720–121585

power instantly, raise the alarm and provide artificial respiration without delay. It may be desirable to have a second assistant if the work is to be carried out in difficult conditions.
Where persons, other than the equipment operator, are likely to be exposed to harmful radiation or sparks from electric arc welding, they should be protected by screens or other effective means.
In restricted spaces, where the equipment operator may be in close contact with the ship's structure or is likely to make contact in the course of ordinary movements, protection should be provided by dry insulating mats or boards.
There are increased risks of electric shock to the equipment operator if welding is done in hot or humid conditions. Under such conditions, the operation should be deferred until such time that an adequate level of safety can be achieved.
Under no circumstances should the welding operation be conducted in wet conditions.
When the welding is completed or temporarily suspended, the electrode should be removed from the holder. Hot electrode ends should be ejected into a suitable container; they should not be handled by bare hand. Spare electrodes should be kept dry in their container until required for use.

9.4              Flame cutting and brazing
Equipment should have backpressure valves fitted adjacent to the torch in the oxygen and acetylene lines and flame arresters fitted at the low pressure side of the regulators.
Oxygen pressure should always be sufficient to prevent acetylene from entering the oxygen line.
Acetylene may explode under excessive pressure. It should not be used at a pressure exceeding one (1) atmosphere gauge.
If a backfire occurs, the valves on the oxygen and acetylene cylinders should be closed immediately. Equipment operators should be trained in the appropriate methods for cooling and/or jettisoning cylinders which become hot. An acetylene cylinder that becomes overheated is very dangerous as an impact could cause internal ignition and subsequent explosion.
Only hoses which have been specially designed for flame cutting and brazing should be used. Hoses in which a flashback has occurred, or which are in any other way damaged, should be discarded.
Blowpipes should be lit by safe means such as a stationary pilot flame or a special friction igniter.
Gases should be shut off at the pressure reducing regulators before a blowpipe is changed.

   10.                        Painting
Paints may be considered as hazardous substances. The packaging or Safety Data Sheet (SDS) will contain warning signs or information, which will give the first indication of any risks. The SDS must be accessible to seafarers using such paint.
Paints may contain toxic or irritant substances. Paints containing lead, mercury or similar toxic compounds should not be used.
A paint for which no manufacturer's information