MIL-STD-2197A(SH)
4.6.3 Skin protection. Shoulder length solution-repellent sleeves or whole body solution-repellent garments shall be worn where required to prevent solutions from contacting the skin. An example is overhead plating. Acid and alkaline-resistant gloves shall be worn. Gloves shall be taped where they connect with other solution-repellent apparel to prevent leakage.
4.6.4 Recovery of solutions. Plastic troughs or catch basins shall be used to collect any plating solutions which may drip from the workpiece.
4.6.5 Mixing of solutions. Solutions containing cyanide shall be prevented from mixing with acid solutions. Cyanides and acid solutions react to make hydrogen cyanide gas, a deadly poison. This restriction includes control of waste solutions or solutions which have dripped off the workpiece.
4.6.6 Waste solution disposal. Waste solutions shall be disposed of in conformance with applicable local, state, and federal regulations.
4.7 Job planning requirements.
4.7.1 Selection of metals to be electroplated. The selection of a metal or metals for deposition in a repair job shall be based on the desired properties for the application. Among the factors to be considered include, but are not limited to, hardness, corrosion resistance, ease of electroplating, and wear. Section 5 and vendor's handbooks provide selection guidance.
4.7.2 Identification of base metal material. Base metal material shall be identified as to type (copper alloy, low carbon steel, nickel alloy, and so forth) and whether there is existing plating. When drawings are available, these may suffice to identify material. Some commercial brush electroplating procedures have sub-procedures included which provide a method for identification using conventional chemical spot tests.
4.7.3 Job records. A job record shall be kept for each plating job so that this information can be retrieved and re-used when appropriate. The job record generally will include most or all of the information provided in 4.7.3.1. Figure 1 (or a commercial procedure form) may be used to record the essential job data.
4.7.3.1 Essential job data. Essential job data shall include the following:
a. Unique identification of workpiece (name, drawing number, piece number, system and plating procedure used, and ship name or number)
b. Workpiece deficiency, or type and location of repair required (For example; pit filling in O-ring groove, build-up of shaft bearing seating area, build-up of motor bell housing outer fit area.) A sketch shall be made on the back side of the form to identify the location of the repair.
c. Workpiece material
d. Operating conditions including pressure, temperature range, corrosive environment, static or sliding contact and wear
e. Type of plating applied
f. Plating procedure number
g. Plating repair classification (see 5.3)
4.7.4 Design of anode. Requirements for conforming anode and size of anode shall be based on cost reduction by increasing plating contact area whenever advantageous. Flow-through pump-fed anodes shall be used whenever possible to reduce labor cost and to improve deposit quality.
4.7.5 Deposition time. On large or long jobs, deposition time shall be calculated using a standard commercial procedure and associated solution data. Very long jobs which are impractical may be identified in this way before the jobs are started.
4.7.6 Amount of solution required. The amount of solution required to accomplish the necessary build-up shall be calculated to ensure adequate stock of solutions is on hand.
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