Inspection cleanliness

L Gapay. A new war on tainted food, better inspections, cleanliness and thorough cooking best defense. AARP Bull 36(5) 2, 8, 1995. 

T Accumulate components and inspection (cleanliness, integrity, and spring envelope)... 

Cleanliness Hardness Hydrostatic Tests Blade Shaker (Static) Rotor balance O Standard O High Speed Final Surface Inspection Crating inspection Spare Rotor Fit ... 

The operational test of the lube system is, as the name implies, a functional test to check as many of the features as practical under running conditions. The first and last step is a demonstration of the cleanliness of the system. This is followed by a running test of a four-hour duration. The test should simulate the field operation with the compressor in every way practical. All equipment to be furnished with the lube system should be used in the test, including the standby pump start and trip switches. All other instruments should be used to demonstrate their operation. Prior to starting the four-hour run, the system should be thoroughly inspected for leaks and the leaks corrected. If no steam is available for a steam turbine (if one is used), the four-hour run can be made on the electric pump. However, every effort should be made to use an alternate source of energy such as compressed air, to operate the steam turbine. 

Cause, R.L., A nonconiacting scanning photoelectron emission technique for bonding surfaces cleanliness inspection. NASA Technical Memorandum NASA TM-100361, 1989. Schirato, R.C., Polichar, R.M. and Shreve, D.C., In Proc JANNAF Nondestructive Evaluation Subcommittee Meeting. Chemical Propulsion Information Agency, Columbia, MD, 1992. 

The manuals and other literature which specify how the tasks need to be performed The consumable materials and spares required The environment to be maintained if anything other than ambient The handling and cleanliness requirements The precautions to be observed to protect health and safety The checks, inspections, tests, and adjustments to be made A model servicing process is illustrated in Figure 19.2. 

This requirement hides an important provision. It not only applies to inspection, measuring, and test equipment but to the measurements that are performed with that equipment. Anywhere you intend performing product verification or monitoring processes you need to ensure that the environmental conditions are suitable. By environmental conditions is meant the temperature, pressure, humidity, vibration, lighting, cleanliness, dust, acoustic noise, etc. of the area in which such measurements are carried out. To avoid having to specify the conditions each time, you need to establish the ambient conditions and write this into your procedures. If anything other than ambient conditions prevail, you may need to assess whether the measuring devices will perform adequately in these conditions. If you need to discriminate between types of equipment, the ones most suitable should be specified in the verification procedures. 

Organization and personnel describe that in the dispensing of all prescriptions, the pharmacist has the responsibility and authority to inspect and approve or reject all components, drug product containers, closures, in-process materials, and labeling. It also has the authority to prepare and review all compounding records to assure that no errors have occurred in the compounding process. The pharmacist is also responsible for fhe proper maintenance, cleanliness, and use of all equipmenf used in prescription compmmding practice. 

When specified, the pnrchaser may inspect for cleanliness the eqnipment and all piping and appnrtenances furnished by or through the vendor before assembly. 

A533 Cleanliness prior to inspection CLEAN c 1 Ainon witnessed Biwitnessed Ciobserved Di none Ziother... 

Since they cannot be inspected visually, they are unknown quantities from the point of view of cleanliness and reliability. 

The most critical components of a cooling system —the heat exchangers— are seldom available for regular inspection. Therefore the cooling tower usually becomes the primary focus for an inspection of the cooling system, and a subsequent estimation of the degree of cleanliness and condition of internal water-wetted surfaces. Individual tower components and sections need to be regularly inspected and an overall assessment made, with an action plan for improvement if required. 

To ensure against such unwanted chemical reactions, systems using liquid oxygen must be kept scrupulously clean of any foreign matter. The phrase "LOX clean in the space industry has come to be associated with a set of elaborate cleaning and inspection specifications nearly representing the ultimate in large-scale equipment cleanliness. 

The Bonding Process. Before the actual assembly operation, the cleanliness of the shop and tools should be verified. The shop atmosphere should be controlled as closely as possible. Temperature in the range of 18 to 32°C and relative humidity from 20 to 65 percent are best for almost all bonding operations. All parts should be fitted together without adhesive or sealant to indicate possible production problems due to fit. The suitability of fit is established by either visual inspection or direct measurement with gauge or shim. It is desirable that the extremes in mechanical tolerances also be noted and that test specimens be made with the worst possible fit to ensure that the bonding process will always provide reliable joints. 

Nondestructive Testing. Nondestructive testing (NDT) is far more economical than destructive test methods, and every assembly can be tested if desired. Several nondestructive test methods are used to check the appearance and quality of structures made with adhesives or sealants. The main methods are simple ones such as visual inspection, tap, proof, and more advanced physical monitoring such as ultrasonic or radiographic inspection. The most difficult defects to find are those related to improper curing and surface treatments. Therefore, great care and control must be exercised in surface preparation procedures and shop cleanliness. 

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