MIL-STD-1622 Cleaning Of Shipboard Compressed Air SystemsThis standard provides the requirements for cleaning of compressed air systems and components.

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PARAGRAPHPAG

5.8.1

CONTENTS E

Applicability ..............................................

31

5.8.2

System preparation .........................................

31

5.8.3

Leak-check .................................................

31

5.8.4

Blowdown ...................................................

31

5.9

Hot or cold water flush ....................................

31

5.9.1

Applicability ..............................................

31

5.9.2

System preparation .........................................

31

5.9.3

Hot water flush ............................................

32

5.9.4

Cold water flush ...........................................

32

5.9.5

Inspection .................................................

32

5.9.6

Drying and reinstalling components .........................

32

5.10

Testing ....................................................

33

5.10.1

Pressure testing ...........................................

33

5.10.2

Operational testing ........................................

33

5.10.3

Gas sampling and analysis ..................................

33

5.11

Removal and replacement of components ......................

34

5.12

Piping repairs between flask and isolation valve ...........

34

5.12.1

Applicability ..............................................

34

5.12.2

System Preparation .........................................

34

5.12.3

Maintenance of purge .......................................

34

5.12.4

Cutting/grinding of system .................................

34

5.12.5

Cleaning ...................................................

34

5.12.6

Inspection and testing .....................................

34

5.13

Loss of cleanliness. .......................................

34

5.13.1

Definition .................................................

34

5.13.2

Method for determination of extent of contamination ........

35

5.13.3

Corrective action ..........................................

35

5.13.4

Local cleaning .............................................

36

5.14

Process verification methods ...............................

36

5.14.1

Visual surface inspection methods ..........................

36

5.14.2

Shake test .................................................

37

5.14.3

Particulate and clarity inspection methods .................

38

5.14.4

Rinse water pH analysis ....................................

38

5.14.5

NOC alkalinity .............................................

38

5.14.6

Detection of hydrocarbon contamination by swipe ............

39

5.15

Personnel qualification and training .......................

40

5.15.1

Applicability ..............................................

40

5.15.2

Content of training ........................................

40

5.16

Packaging ..................................................

40

5.16.1

Applicability ..............................................

40

5.16.2

Internally and externally cleaned components ...............

40

5.16.3

Internally cleaned items ...................................

41

5.16.4

Identification .............................................

41

5.16.5

Inspection of packaging ....................................

41

6.

NOTES ........................................................

41

6.1

Intended use. ..............................................

41

6.2

Issue of DoDISS. ...........................................

42

6.3

NAVSEA approval and direction ..............................

42

6.4

Safety precautions .........................................

42

6.5

Subject term (key word) listing. ...........................

42

6.6

Changes from previous issue ................................

42