MIL-STD-801 Inspection And Acceptance Standards For Fuel Cells And FittingsThis standard establishes a test method standard for fuel cells and fuel cell fittings. This standard applies to all fuel cells manufactured in accordance with MIL-DTL-5578, MIL-DTL-6396 except Type I, and MIL-DTL-27422.

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Item

Defects

Defect Classes

Types of Fuel Cells/Location

Fittings

Minor

Major

Critical

Bladder

Cells

Self- sealing Cells

Crash Resistant Cells

Cell

Interior

Cell

Exterior

Installed

Replacement

12

CUTS OR HOLES IN INNER LINER

a. Elastomer gum or fabric inner liner (Note: This item is not applicable to stand test or dissection test, see tables III and IV)

-

-

x

x

x

x

x

-

-

-

13

LUMPS, CRATERS OR FOREIGN MATERIALS IN FUEL CELL GUM INNER LINERS

a. Up to 1/2 specified liner thickness

x

-

-

x

x

x

x

-

-

-

b. In excess of 1/2 of specified liner thickness

-

x

-

x

x

x

x

-

-

-

14

SEPARATION OF CEMENTED COMPONENTS (CHAFING STRIPS, PATCHES, TABS, ETC.)

a. Not exceeding 15 percent looseness provided a continuous bond at least 1/4 inch wide is maintained around edge except at step-off where item 4 applies

x

-

-

x

x

x

x

x

-

-

b. In excess of 14a.

-

x

-

x

x

x

x

x

-

-

15

DELAMINATION OR SEPARATION BETWEEN ANY TWO PLIES OR BETWEEN LINER AND ADJACENT PLY

a. 1 inch maximum dimension; not to exceed average of 1 per 5

square foot area; maximum of 5 inches any one 5 square foot area; minimum of 6 inches solid bond between delaminations/separations

x

-

-

x

x

x

x

x

-

-

b. In excess of 15a.

-

x

-

x

x

x

x

x

-

-

16

ExTERNAL DIMENSIONS OF CELL OUT OF TOLERANCE

-

-

x

x

x

x

-

x

-

-

17

FITTING MISLOCATED OR FITTING ROTATED BEYOND SPECIFIED TOLERANCE

-

-

x

x

x

x

x

x

x

-