Note

Kerie Cable is not recommended for use deeper than 300 FSW.

Table 2-7. Kerie Cable Size/Metal to be Cut1

Cable size

Metal Thickness

(mm)

(in.)

6 (0.24 in.)

up to 1

9 (0.36 in.)

1 to 2-1/2

12 (0.48 in.)

over 2-1/2

1. Based on manufacturer's data.

Table 2-8. Kerie Cable Oxygen and Cable Consumption Ratio

Average

Average

Cable Size (mm)

Cable Consumed (ft. per

Oxygen Consumed (psi per

minute)

minute)

6 (0.24 in.)

2.1

13.9

9 (0.36 in.)

2.2

35.5

12 (0.48 in.)

2.4

40.6

2-4.9 Re-lighting Cable Underwater. After calling for GAS OFF, the diver should continue to rub the cable against the work to prevent the molten plastic coating from forming insulation over the inner wire core. This step is necessary to ensure reignition. When operations require reignition of the Kerie Cable for more than a second or third time, consideration should be given to the use of a DC welding machine due to limitations of the batteries.

2-4.10 Emergency Off Safety Procedures. The diver indicates emergency off action required by calling out EMERGENCY OFF and sending one hand-pull signal on the umbilical. The equipment tender turns the HOKE valve to the vent position. The cable will flood and the flame will stop immediately.

2-4.11 Loss of Communications. In the event of loss of communication, the cutting operation must be stopped until communications are restored. Diving supervisors shall establish an EMERGENCY OFF procedure to deal with loss of communications.

2-4.12 Equipment Tender. The phone talker may be assigned the task of equipment tender. The tender will NOT close the circuit unless specifically directed to do so by the diver. When directed, the tender will confirm each change with the diver.

The equipment tender will ensure that the diver has the proper oxygen overbottom pressure in accordance with Table 2-6 and must remain within reach of the control panel at all times.

2-4.13 Electrical Precautions. It is important that the specially designed 10-foot, HP manifold, joining the oxygen cylinders with the panel, NOT be substituted. This is an electrically insulated manifold designed to prevent any return current from traveling up the steel-braided hose to the oxygen cylinders. All electrical connections shall be tight and insulated with red plastic sleeve or other non-conductive material, (rubber tape, heat-shrink tubing, etc).

2-4.14 Post-Dive Maintenance. Post-dive maintenance for the Kerie Cable is quite simple. The following procedures are recommended:

a. Rinse equipment which has been exposed to salt water with fresh water.

b. Blow any remaining moisture out of unused portion of cable and dry thoroughly.

c. Return equipment to stowage in an oil free environment.

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