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More Details for 1967-04-08

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A flash report sent to the NASA Apollo Program Director by ASPO Manager George M. Low at MSC informed him that all the fuel-cell gaseous- nitrogen titanium-alloy tanks were suspected of having contaminated welds.

The problem was detected during an acceptance test. Preliminary investigation revealed the weld had become contaminated during girth weld repair, because of incomplete purging of the tank's interior. All rewelded tanks were therefore liable to be contaminated and records were inadequate to identify which tanks had been rewelded. The following actions had been directed by Low for use on spacecraft 017 and 020:

- cyclic and proof pressure test at pressures well above normal operating followed by x-ray and dye penetrant inspection on replacement tanks for spacecraft 017 fuel cells; and

- removal of the spacecraft 017 tanks and replacement with tanks subjected to (1) above was planned.

It was expected that this could be accomplished without removal of the fuel cells, and the replacement of the three tanks was not expected to affect the 017 schedule.