Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Part 5. Resistance to earth
Petroleum and natural gas industries. Design and operation of subsea production systems. Part 2. Unbounded flexible pipe systems for subsea and marine applications
Radionuclide ionizing radiation sealed sources. Durability classes and test methods. Norms of degrees of rigidity under climatic and mechanical influences