MIL-STD-1330D(SH)
w/ Change 1
4.3.1.10 Stowage. NOC should be stored in covered containers to minimize evaporative losses. Stowage of heated NOC for several days should only be in corrosion resistant metal, Teflon, or Teflon lined glass containers. Long term stowage of heated NOC in plastic (other than Teflon), rubber, or glass containers will result in cleaner degradation. Unheated NOC may be stowed in plastic or plastic lined containers provided the container has been checked for extractable organic material. This is accomplished by filling the container with NOC for not less than
10 days and verifying organic cleanliness as specified in 5.13.2. Checking for extractable organic material of containers is not required for containers from the same vendor and of the same material that previously tested satisfactorily. Experience indicates that NOC can be successfully stored in aged uncolored or clear high density polyethylene (HDPE) or polypropylene plastic containers. NOC can also be stored in steel containers having an unplasticized low density polyethylene (LDPE) liner which is not adhesively bonded to the steel container similar to A-A-58020. Stowage of NOC in colored plastic containers may contaminate the cleaner and adversely affect the NVR analysis results. NOC allowed to dry on glass will result in a hard insoluble residue. Wide mouth glass
sample bottles with external safety coatings and Teflon lined caps are acceptable, as are sampling containers manufactured from Teflon, Teflon lined glass, Teflon lined plastic, or stainless steel. Bulk shipboard stowage of NOC shall be in accordance with NAVSEA S9086-WK-STM-010/CH-670 for alkalies.
4.3.2 Tribasic sodium phosphate (TSP).
4.3.2.1 Applicability. TSP is a solid crystalline material mixed with water to prepare an aqueous alkaline cleaning solution approved for use as a pre-cleaner or final cleaner for all compatible piping and components other than liquid oxygen generating plants. It may be used for liquid oxygen generating plant piping and components provided the aqueous cleaning process specified herein can be successfully accomplished. TSP shall be in accordance with O-S-642, Type I or II, or equal. Type II is recommended because it is less susceptible to precipitation.
4.3.2.2 Safety precautions. Follow the safety precautions recommended in the vendor's material safety data sheet and the following:
a. TSP is a solid, crystalline material which has a caustic action on skin, eyes, and mucous membranes. Repeated or prolonged contact with the solid material or its solution shall be avoided.
b. Skin contact with TSP will result in irritation of the skin, including redness and burning of the skin, and other skin damage. Wear impervious protection clothing (gloves, aprons or coveralls, boots) constructed of neoprene or other material of equivalent resistance to penetration so as to prevent skin contact. If skin contact occurs, exposed areas shall be washed with large amounts of fresh water. Remove clothing which becomes
contaminated as soon as possible and launder before reuse. If skin is damaged, seek immediate medical attention. If skin is not damaged and symptoms persist, seek medical attention. If irritating dust or solution mist is present, approved respirators shall be worn to avoid inhalation.
c. Eye contact with TSP could result in permanent eye injury, including injury of the cornea causing blindness. Symptoms include stinging, tearing, redness, and swelling of eyes. Wear chemical safety goggles for all operations where eye contact with TSP could occur. Additionally, use a full-length face shield for any operation where splashing of the material could occur. In the event of eye contact, personnel should flush their eyes thoroughly with fresh water for not less than 15 minutes, then seek prompt medical attention. An eye wash system conforming to the design requirements of the ANSI Z358.1 shall be in the immediate vicinity of all operations. Eye wash systems shall provide not less than 15 minutes of water for emergency flushing.
d. In the event any adverse health effects are experienced, cease operations involving TSP and consult the cognizant medical department representative for additional guidance.
4.3.2.3 Disposal. Disposal of TSP shall be in accordance with local, state, and federal regulations.
4.3.2.4 Compatibility. Appendix A gives the compatibility of TSP with various materials. Where specific information is lacking, perform compatibility testing as specified in A.3.1 of Appendix A.
4.3.2.5 Solution preparation. Prepare the TSP cleaning solution by dissolving 2 pounds of Type I or 4.5 pounds of Type II TSP with 5 gallons of Grade B water at 160 to 180 °F. In order to prevent a violent reaction and to more completely mix the TSP, add the TSP to the water; do not add water to the TSP. The solution shall be circulated
until the TSP is dissolved prior to exposing the solution to a system or component.
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