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More Details for 1968-03-18

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The MSC Structures and Mechanics Division reported to ASPO Manager George M. Low that additional verification of the spacecraft 020 reaction control system (RCS) pressure vessels would not be required.

Using pressure vessel histories received March 14 and the previous propellant temperature restriction of 297 kelvins (75 degrees F) maximum, fracture mechanics analyses showed:

- all RCS helium tanks were satisfactory to maximum design operating pressure (MDOP);

- all CM RCS propellant tanks were satisfactory to MDOP;

- all SM RCS tanks were satisfactory to MDOP; and

- the differences between measured MDOPs on RCS SM oxidizer tanks and the pressures assured safe by fracture mechanics were considered to be insignificant differences.