6.3.4.12 Watertightness
a) A 1.5 m length of completed cable with its ends unsealed shall be installed through a gland in a test
tank with approximately 150 mm of the cable protruding into the tank. The gland to be used for this test shall be of the type fitted in submarine pressure–tight bulkheads as shown on Vickers Drawing No. SSN07/P/305/00/0001. Both ends of the gland shall be packed with polychloroprene pre-moulded collars as shown on SDN 006 003 815 and the gland nuts tightened with the appropriate
torque:
Minimum cable diameter up to 17 mm 13.6 Nm
Minimum cable diameter 18 mm to 27 mm 27.0 Nm
Minimum cable diameter 28 mm to 40 mm 40.0 Nm
Minimum cable diameter above 40 mm 54.0 Nm
b) The test tank shall be capable of maintaining a continuous water pressure of 2.4 MN/m2. Where the cable has been ordered in lengths greater than 100 m, both ends shall be tested and failure of either sample shall involve rejection of the length.
c) The cable installed in accordance with Clauses 6.3.4.12a. and 6.3.4.12b. shall be subjected to the
following test:
1) With water in the tank at 20ºC ±5ºC the pressure shall be raised to 2.4 MN/m2 in not more than 5 minutes and maintained at this value for 4 hours. The water leakage through the cable during this period shall not exceed the values given in Table 10 and Table 11. If the leakage after 2 hours does not exceed 20 per cent of the appropriate value the cable shall be deemed to have met the requirements of this Clause.
NOTE The leakage of cable NSN 6145–99–521–6968 is not to exceed 520 ml. The leakage of cables NSN
6145–99–521–6944 and NSN 6145–99–521–6965 shall be recorded only.
Watertightness Tester According to DEF STAN 02-517 Part 1 Issue 2 for Cables
- End seals and flange sizes according to customer request
- Touch screen control or Computer control
- Piston pump up to 50 bars
- Solenoid valves and sensors are European
- Italian pump
- Main chamber is SS304
- Automatic control and monitoring of the pressure
- Option 1- Computer control with reporting in MS Word
- Option 2- Touch screen control and monitoring on the display – Brief report on thermal printer
- Training video included