Table 7. Pressurization Tests on the Prototype 66-lnch-ODx61-lnch-ID 

 Acrylic Plastic Capsule 



Type 

 of 



Number 

 of 



Maximum 

 Pressure 



Duration of 

 Sustained 



Temperature 

 <°F> 



Instrumentation 



Damage 



Test 



Tests 



(psi) 



Loading 











100 



24 hr 



68-70 



strain gages 



none 







200 



24 hr 



68-70 



strain gages 



none 







300 



24 hr 



68-70 



strain gages 



none 







400 



24 hr 



68-70 



strain gages 



none 







500 



24 hr 



68-70 



strain gages 



none 







600 



24 hr 



68-70 



strain gages 



none 







700 



24 hr 



68-70 



strain gages 



none 



Long term 





800 



24 hr 



68-70 



strain gages 



none 







250 



6hr 



68-70 



water displacement 



none 







500 



6hr 



68-70 



water displacement 



none 







750 



6hr 



68-70 



water displacement 



none 







500 



4hr 



38 



strain gages 



none 







600 



7 hr 



36 



strain gages 



none 







700 



5-1/2 hr 



43 



strain gages 



none 







750 



8 hr 



42 



strain gages 



none 







850 



8 hr 



41 



strain gages 



none 





5 



500 



6 hr each test 



68-70 



strain gages 



none 





5 



500 



1 hr each test 



68-70 



strain gages 



none 





7 



500 



15 min each test 



68-70 



strain gages 



none 





13 



500 



2 min each test 



68-70 



strain gages 



none 



Cyclic 



20 



500 



4 hr each test 



32-75 



strain gages 



none 





15 



550 



1 hr each test 



32-40 



none 



none 





13 



550 



1/2 hr each test 



32-40 



none 



none 





11 



500 



1 min each test 



32-40 



none 



none 





1 



1,070 



10 min 



34 



none 



none 



Short term 



1 



1,850 



none 



70 



none 



imploded 



Notes: 1 . For all the tests the 66-inch capsule was secured to the protective cage by bolting 

 the polar steel plate on the bottom of the capsule to the base of the cage. 



2. The capsule was tested a total of 107 times. 



3. The capsule was removed 25 times from the pressure vessel for inspection during 

 the test program. 



4. The capsule sustained a total of 375 hours under hydrostatic pressure prior to 

 destructive implosion test. 



107 



