Page 203 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

192 CHAPTER 8 Cables and Connectors
FIGURE 8.41
RF transmission occurs through water, ground, and air.
8.6 Reliability and quality control
(Courtesy WFS Technologies.)
A design starts with engineering and then proceeds to manufacturing. The two departments work together in the product development phase. Quality Control (QC) is an independent department that assures the part is made as it was designed. Quality is not added by the QC department, only validated.
Production Quality Assurance (QA) involves mechanical tests including visual, dimensional, and pressure testing. Electrical tests are done where appropriate, including Hi-pot, conductivity, and Megger (see Section 8.9 below). They may also perform environmental tests such as shock, thermal, suspended material, and corrosion tests.
8.7 Field maintenance
With seals in general, “Cleanliness is next to Godliness.” The wise technician will put together a
field kit containing:
1. Spare O-rings (with replacement use chart)
2. Wood or plastic toothpicks or brass picks, as supplied by Parker Seal, for O-ring removal 3. Lint-free wipes
4. Isopropyl alcohol