MIL-STD-1622B(SH)
filter material is thermally bonded, pleated polypropylene containing no plasticizer or adhesive. The major advantage of disposable polypropylene filter cartridges is ease of use. Cleaning stainless steel reusable filters can be difficult and time consuming. The large soil holding capacity of disposable filter cartridges can often balance the cost of using smaller soil holding capacity stainless steel filters requiring frequent cleaning. Filter housings should be configured with a vent on the top of the housing to allow removing oil that has separated from the NOC. Verify with the filter manufacturer that the temperature, pressure and flow rating of any filter is adequate for the intended application. Disposal of used filters or separated oil shall be in accordance with local, state and federal regulations.
4.2.1.10 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. For critical applications, 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 no less than 10 days then checking for foam as specified in 5.14.2, and performing a visual inspection as specified in 5.14.3.2. 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. 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 S9086-WK-STM-010/CH-670 for alkalies.
4.2.2 Tribasic Sodium Phosphate (TSP).
4.2.2.1 Applicability. TSP is a solid crystalline material mixed with water to prepare an aqueous alkaline cleaning solution approved for use as a precleaner or final cleaner for all compatible piping and components. TSP shall conform to O-S-642, type I or II, or equal. Type II is recommended because it is less susceptible to precipitation.
4.2.2.2 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)Chemical safety goggles or face shield, rubber gloves, and rubber aprons or coveralls shall be worn to prevent skin contact. In the event of eye contact, personnel should flush their eyes thoroughly with fresh water for a minimum of 15 minutes, then seek prompt medical attention. An eye wash system conforming to the design requirements of the American National Standards Institute (ANSI) Z358.1 shall be in the immediate vicinity of all operations. Eye wash systems shall be capable of providing a minimum of 15 minutes of water for emergency flushing.
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