provides an insight into the work and related problems that were encountered 

 during the refurbishment of TEKTITE II. 



TESTING 



Upon completion of habitat refitting, the on-board systems required verifica- 

 tion by testing. In many cases, the test consisted of little more than operat- 

 ing the system or component under conditions which reasonably approximated its 

 environment while in use. However, in some cases the tests were somewhat more 

 complex. To verify the CO2 scrubber, for example, it was necessary to seal and 

 pressurize the habitat, then operate the monitor the system while introducing 

 CO2 at a known, controlled rate. A new larger capacity sea water condenser 

 pxnap was installed. New high pressure external manifold piping for the emerg- 

 ency air supply and SCUBA charging system was fabricated from heavy wall monel 

 tubing, fittings, and valves. All ECS components and systems were subjected to 

 leak tests and performance testing. Components were replaced as required to 

 place the system in an operable condition and gain confidence in the ability of 

 the system to operate successfully over a 9-month period. All high pressure 

 piping in the habitat was proof pressure tested at 1% times operating pressure. 

 The sea water condenser and piping was flushed and cleaned, and a new external 

 sea water filter procured. 



The habitat pressure test was performed to verify the adequacy of plexiglass 

 viewing ports, rings, seals, gaskets, and other structural elements subjected 

 to internal pressurization when the habitat was pressurized on the surface prior 

 to emplacement. Considerably fewer tests were required on TEKTITE II than on 

 TEKTITE I. Table 7 compares various categories of tests performed on each pro- 

 gram. Details of TEKTITE II tests are discussed in greater depth in Reference 7. 



Table 7. —Comparison of Tests, TEKTITE I and TEKTITE II 



Number of Tests 

 System TEKTITE I TEKTITE II 



Structure (Habitat and Base) 17 5 



Environmental Control 20 9 



Plumbing 8 2 



Electrical 5 5 



Communications 22 13 



Atmosphere Monitoring 3 2 



Interior 4 2 



Utilities 4 7 



Total 83 45 



11-33 



