PERSONNEL RESCUE

It is possible that gases other than H₂S may be encountered, but they pose a much lower hazard (see "Appendix D" and "Appendix E"). In general, the measures taken to protect against H₂S exposure will also be effective against other gases.

When H₂S levels are above 20 ppm, use a detector...don't assume! Always use a portable H₂S detector to monitor H₂S levels in a confined space. Low oxygen levels can be just as lethal as H₂S. The ship's officers have oxygen meters to determine if a space has enough oxygen, but the oxygen meters do not measure H₂S levels. In some cases it is necessary to use both types of meters. H₂S levels may be safe at the entrance to a confined area but can change quickly to lethal levels, depending on the source. H₂S is denser than air and will settle into low areas. Do not enter a confined space without using a BA to rescue someone who has passed out.

The following procedures describes implementing personnel rescue:

1. Put on a BA before proceeding to assist anyone affected by the gas.
2. Put on a safety belt with 50 ft of tail line and obtain standby assistance before entering the area if the person is in a high-concentration area.
3. Utilize the buddy system when entering possible contaminated areas.
4. Move the victim to fresh air.
5. Administer resuscitation or oxygen as needed. Call the Ship's Doctor.
6. If the person is injured because of exposure to H₂S, arrange for evacuation to a shore-based medical facility.