MIL-STD-1330-SUP-2 Precision Cleaning and Testing of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, and Hydrogen SystemsThis standard provides the requirements for precision cleaning and testing of oxygen or oxygen-enriched systems and components; oxygen generating plants including nitrogen, hydrogen, and demineralized water support systems and components; and helium, helium-oxygen, and hydrogen life support systems and components. Each activity will implement the applicable requirements of this document through a locally prepared and approved procedure. Activities subject to additional quality assurance requirements such as NAVSEA SS800-AG-MAN-010/P-9290 or NAVSEA SS521-AA-MAN-010 will obtain procedure approval from the applicable certifying activity.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59 - 60 - 61 - 62 - 63 - 64 - 65 - 66 - 67 - 68 - 69 - 70 - 71 - 72 - 73 - 74 - 75 - 76 - 77 - 78 - 79 - 80 - 81 - 82

MIL-STD-1330D(SH)

20 September 1996

(a)  A supply of grade A water.

(b)  A flushing rig for flushing piping systems as specified herein.  It

shall consist of pumps, piping, measuring devices for pressure,

temperature, and flow, and hoses.  Items shall attain the

pressure, temperature, and flow rates required by this standard.

(c)  Equipment to perform the applicable analyses as specified in 5.13.

5.7.3  Flush.  Flushing shall be accomplished as follows:

(a)        The demineralized water piping shall be flushed for 15 minutes with grade A water at not less than 150EF to remove loose scale, rust, grit, filings, oil, grease, and other foreign substances.  Lower temperatures may be used to prevent damage to items such as PVC piping with local engineering approval.

(b)        A sample of the flush water shall be inspected for particulate cleanliness as specified in 5.13.3 and verified free of visual turbidity, oil, sediment, and resin beads.  If organic contamination is suspected, determine the level of contamination in accordance with ASTM D 2579, or equal.  Organic levels should not exceed 1 ppm.

5.7.4   Visual inspection.  Following the flush, the system shall be inspected as follows:

(a)        Drain the water from the system and perform a visual inspection as specified in 5.13.1 except inspect only for visible traces of hydrocarbons.        The inspection shall be performed at the oxygen generator union connection, of accessible surfaces in the demineralized water storage tank, and of distillate supply piping running from the evaporator to the ships service demineralizer.

(b)        If visible traces of hydrocarbons are found, the piping shall be cleaned as specified in 5.5.

5.8  Solvent system cleaning processes.

5.8.1  Applicability.  The solvent system cleaning processes are given in table IV.

TABLE IV.  Solvent cleaning processes.

1/ The boundaries are as defined in 1.2.

2/ The oxygen-nitrogen plant piping consists of all piping

for handling liquid oxygen or nitrogen and the gas cross

connect piping between plants.  If moisture can be removed

from the piping or item being cleaned, it may be cleaned as

specified in 5.5 instead of 5.8.3.

3/ Distribution piping for the oxygen-nitrogen plant can be

cleaned with cleaning solvent as specified in 5.8.3 provided

that a flush is being performed concurrently.

5.8.2  Oxygen-nitrogen plants.

5.8.2.1  Material and equipment.

(a)  A supply of cleaning solvent as specified in 4.4.

(b)  The required cleaning equipment and process depends on the plant

make, model, and configuration.  Specific procedures and equipment

are not specified in this standard.  The equipment shall be

compatible with the cleaning solvent.

29