USING STAMP

STAMP provides a new theoretical foundation for system safety on which new, more powerful techniques and tools for system safety can be constructed. Part III presents some practical methods for engineering safer systems. All the techniques described in part III have been used successfully on real systems. The surprise to those trying them has been how well they work on enormously complex systems and how economical they are to use. Improvements and even more applications of the theory to practice will undoubtedly be created in the future. 

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The standard doesn t require a procedure covering inspection and test status however, as clause 4.2 requires a documented quality system, you will need to document the methods employed to denote inspection and test status. If you use stamps you will need a register to allocate stamps to particular individuals and to indicate which stamps have been withdrawn. When a person hands in a stamp it is good practice to avoid using the same number for 12 months or so to prevent mistaken identity in any subsequent investigations. 

The stamp associated with the extreme hardness values (number 7, Fig. 4.12, left use STAMP.dat with program MULTI) is the next suspect It is identified and inspected on disassembly of the tablet press Due to mechanical wear, the movement of the stamp assembly is such that an above-average amount of granulate drops into cavity number 7, and is thus compressed to the limiting hardness supported by the granulate. The hardness for stamps 4, 8, and 11 tends to be low, and high for 12, but the data is insufficient to come to definite conclusions for these tools. The tablets from these stamps contaminated what would otherwise been a fairly acceptable product. Because... 

Dumb-bells can usually only be stamped or moulded, but the latter method is little used. Stamping is satisfactory using a sharp die if the thickness is restricted to 3mm for a type 1 dumb-bell and 2.5 mm for a type 2. 

Fig. 18 Scanning electron microscopy image indicating that long-range order is preserved in the stamping process and those mesoscale dimensions can be approached using stamping...

Pompe T, Fery A, Herminghaus S, Kriele A, Lorenz H, Kotthaus JP (1999) Submicron contact printing on silicon using stamp pads. Langmuir 15 2398-2401... 

Other official exceptions were made for the helicopter operations, such as allowing them in the Security Zone without AWACS coverage. Using STAMP, the accident can be understood as a dynamic process where the operations of the Army and Air Force adapted and diverged without effective communication and coordination. 

More information on how to build multiple views of an accident using STAMP in order to aid understanding can be found in chapter 11. More examples of STAMP accident analyses can be found in the appendixes. 

Engineering and Operating Safer Systems Using STAMP... 

The causality model used in accident or incident analysis determines what we look for, how we go about looking for facts, and what we see as relevant. In our experience using STAMP-based accident analysis, we find that even if we use only the information presented in an existing accident report, we come up with a very different view of the accident and its causes. 

Couturier, Matthieu. A Case Study ofVioxx Using STAMP. Master s thesis. Technology and Polity Program, Engineering Systems Division, MIT, June 2010. 

S.3.4. INEOS Electrolyzers. BMEOS FM21-SP monopolar electrolyzer (Fig. 5.29) uses stamped electrodes. The anode is a 2-mm thick titanium panel between compression-molded joints of a special cross-linked EPDM elastomer. The cathode is a 2-mm thick nickel panel between compression molded EPDM joints. 

Stamping. A process for the application, by hand or by machine, of decoration to pottery-ware a rubber stamp with a sponge backing is used. Stamping is particularly suitable for the application of BACK STAMPS (q.v.) and for some forms of gold decoration. 

In Australia, indirect drying has been used for many decades to prepare brown coal for briquetting. In this process, low-pressure steam is condensed on the outside of tubes conveying brown coal to provide process heat the more water removed in liquid form, the higher the efficiency. After reducing the moisture to nominally 15%, dried brown coal is compacted into strong briquettes using stamp presses. 

Huang,Y.-H.,Wu,J.-T., Yang, S.-Y, 2011. Direct fabricating patterns using stamping transfer process with pdms mold of hydrophobic nanostructures on surface of micro-cavity. Microelectron. Eng. 88. 

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