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

26

CUTS OR NICKS IN FITTING FLANGE

a. 1/32 inch or less

x

-

-

x

x

x

x

x

x

x

b. Over 1/32 inch but less than 1/2 body thickness at defect

-

x

-

x

x

x

x

x

x

x

c. Greater the 1/2 body thickness

-

-

x

x

x

x

x

x

x

x

27

ExPOSED FABRIC IN FITTING FLANGE

a. With no damaged cords. Cords exposed at edge of fitting flange are permitted

x

-

-

x

x

x

x

x

x

x

b. With damaged cords

-

x

-

x

x

x

x

x

x

x

28

BLISTERS IN FITTING FILLET

a. Up to 1/8 inch

x

-

-

x

x

x

x

x

x

x

b. In excess of 1/8 inch

-

x

-

x

x

x

x

x

x

x

29

CUTS OR CRACKS IN FITTING FILLETS

x

-

-

x

x

x

x

x

x

x

30

EDGE LOOSENESS BETWEEN FITTING FILLET AND FABRIC

x

-

-

x

x

x

x

x

x

x

31

EDGE LOOSENESS BETWEEN FITTING FILLET AND METAL

x

-

-

x

x

x

x

x

x

x

32

SEALING SURFACE OF FITTING ROUGHER THAN SPECIFICATION LIMITS

-

x

-

x

x

x

x

x

x

x

33

FITTING CRITICAL FLAT AREA FINISH, OTHER THAN SEALING SURFACE, ROUGHER THAN SPECIFICATION LIMITS

-

x

-

x

x

x

x

x

x

x

34

SCRATCHES, PITS, OR MARS IN SEALING SURFACE BEYOND LIMITS OF SPECIFICATIONS

-

-

x

x

x

x

x

x

x

x

35

MOLDING FLASH ON SEALING SURFACE OF FITTING

-

-

x

x

x

x

x

x

x

x

36

FAULTY DOME NUT

-

-

x

x

x

x

x

x

x

x

37

THREAD DIMENSIONS OUT OF TOLERANCE

-

x

-

x

x

x

x

x

x

x