MIL-STD-1330 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.

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MIL-STD-1330D(SH) APPENDIX D

w/ Change 1

D.10.3.8 Check that the dish baseline cleanliness (reading #2) is within 100 counts of the baseline cleanliness acceptance criteria recorded in data sheet 3 for the specific dish being used for the analysis. Readings outside this range indicate a problem with dish cleanliness. Repeat steps D.10.3.3 through D.10.3.7 to check dish cleanliness.

NOTE 15: The solvent used for preparing the laboratory standard needs to be the same as the cleaning solvent

(i.e., if HFE-7100 will be used as the cleaning solvent, then HFE-7100 must be used to prepare the standard).

NOTE 16: Never transfer calibration standard from the laboratory standard to the dish using the pipet to prevent contamination of the standard.

NOTE 17: If the standard inadvertently reaches the dispenser, the dispenser will contaminate the contents of the pipet. If this occurs, dump the contents of the pipet into the waste solvent storage flask and fill the pipet several times above the 0.5 mL mark with unused solvent to clean the pipet.

WARNING 3: Thermal decomposition of solvent can cause harmful vapors. As a check, feel the hot plate with bare hand to confirm it is only "warm to the touch" prior to evaporating solvent in the dish. If it is hot, determine

the cause and correct the problem before proceeding.

D.10.3.9 Transfer 2 to 3 mL of unused solvent into the 10 mL beaker. Fill the pipet with 0.5 mL of solution by rotating the filler/dispenser knob. With the dish on the hot plate, transfer this 0.5 mL of solution to the evaporating dish by rotating the knob in the opposite direction. Allow the solvent to completely evaporate. Repeat for a total of

2 doses.

NOTE 18: Accomplish the following actions quickly as possible to minimize the time the dish is exposed to the UV light. Since the monitor is not sensitive to temperatures specified in this procedure, there is no need to allow the dish to cool before taking a reading.

D.10.3.10 Slide the dish under the SQM sensor. Place the sensor directly on the top edge of the dish. Align the dish so that the outside of the dish aligns with the outside of the sensor. Press the ENTER key on the SQM and observe the reading. Remove the dish. Log the reading in data sheet 3. Place the dish back on the hot plate.

NOTE 19: If an error occurs while taking a reading, such as pressing the wrong key or dropping the dish, the reading can not be repeated. If this occurs, start over from D.10.3.3.

D.10.3.11 Compare to the data taken in D.10.3.1. If the reading is greater than or equal to the Dish 5 ppm Acceptance Criteria, then the baseline solvent is acceptable for use. Continue with dosing the dish with 5 ppm standard as specified in the following paragraphs. If the reading is less than the Dish 5 ppm Acceptance Criteria, perform troubleshooting to determine the source of the contamination.

D.10.3.12 For the standard prepared in D.9, if it is used for the first time that day, confirm that the solvent level is at the last mark on the standard. If it is not, obtain another standard. Shake the standard vigorously for no less than 15 seconds. Remove the cap from the laboratory standard. Pour approximately 2 to 3 mL of the laboratory standard into the 10 mL beaker. Immediately replace the cap on the standard to minimize evaporative losses. Fill the pipet with 0.5 mL of solution by rotating the filler/dispenser knob. With the dish on the hot plate, transfer this

0.5 mL of solution to the evaporating dish by rotating the knob in the opposite direction. Allow the solvent to completely evaporate.

D.10.3.13 Repeat D.10.3.12 for a total of 3 doses (1.5 mL total). Clean the beaker and pipet by rinsing with unused solvent.

NOTE 20: Accomplish the following actions as quickly as possible to minimize the time the dish is exposed to the UV light. Since the monitor is not sensitive to temperatures specified in this procedure, there is no need to allow the dish to cool before taking a reading.

D.10.3.14 Slide the dish under the SQM sensor. Place the sensor directly on the top edge of the dish. Align the dish so that the outside of the dish aligns with the outside of the sensor. Press the ENTER key on the SQM and observe the reading. Remove the dish. Log the reading in data sheet 3. Place the dish back on the hot plate.