Proof testing competence

After proof testing, a competent person must inspect the platform and rigging to determine if the test has been passed. If any deficiencies are found that pose a safety hazard, the platform and rigging must not be used to hoist personnel unless the deficiencies are corrected, the test is repeated, and a competent person determines that the test has been passed. ( See 1926.1417 for tag-out and related requirements.)... 

Personnel hoisting must not be conducted until the competent person determines that the platform and rigging have successfully passed the proof test. 

Proof testing principles Proof testing types and procedures Format of proof testing procedures Proof test records Planning and scheduling Competence MOC... 

Judgment hy a competent person is necessary for implementation of partial proof testing. Such decisions are taken on the basis of the component types, relative costs of periodic maintenance, replacement and overhaul, and the access to the equipment. 

All persons concerned with the proof test must be competent to carry out the job. 

In the same sense, in condensed media, it is often assumed that upper excited electronic states relax rapidly by internal conversion and vibrational equilibration to the lowest excited electronic state of the same multiplicity. Thus, referring to Figure 3, which extends the mechanism of Figure 1, if two excited states, A2 and A, have the same multiplicity, it is likely that the upper state, A, would undergo rapid internal conversion to A2 in solution. The sequence 03-32 could then be considered as the equivalent of step 02, provided that neither of steps 34 or 35 could compete, under these conditions, with step 32. A common diagnostic test (but not proof) of this situation is independence of the quantum yield on wavelength. 

The more interesting results obtained were for the use of both additives together, all of which showed a further increase in load-carrying capacity, so that any interaction in these tests was beneficial. The greatest improvement was approximately 39 kg increase in Initial Seizure Load compared with the solution of ZDDP alone. Curiously, 1% of molybdenum disulphide gave only about 18 kg improvement over the ZDDP solution. There was virtually no increase in weld load compared with the ZDDP, and this again suggests that the concentrations of molybdenum disulphide were too low to be very effective. Thorp explained these results on the basis that molybdenum disulphide cannot compete with the base oil for adsorption on the steel surfaces, but can adsorb on top of an adsorbed ZDDP film, but there is no real proof of this explanation. 

For most products and machines, the self-declaration process (module A) is possible. In practice the manufacturer performs the complete product assessment according to EU standards, issues the declaration, and affixes the CE marking to the product. A technical file or documentation must also be available on demand for national enforcement authorities. Keep in mind that this is an internal self-assessment process, a do-it-yourself approach, that results in issuance of the manufacturer s declaration of conformity and the CE marking (Figure 2-6). The buyer may demand proof of safety/EMC compliance in the form of a mark, certificate, or test report from a European notified or competent body. 

The Council resolution of 7 May 1985 showed the way by accepting that there could be more than one means of proof of conformity to a directive. It provided for presumption of conformity to a directive on the basis of a European harmonized standard, or, during a transition period, of national standards which have submitted and recognized as equivalent under Community control procedure. When the manufacturer complies with these standards, the directives allow him to make use of simplified certification mechanisms. When the product does not conform to a standard, however, either because the standards do not exist or because the manufacturer, for in the case of innovation, prefers to apply other manufacturing criteria of his own choice, the assessment of conformity to the essential requirements must [may] involve a third party either by certification or by third party testing [via notified/competent body]. (OJEC 89/C267/03)... 

European notified bodies (safety) and competent bodies (EMC) are accredited at the national level by the member states, such as in Germany at the European level accreditation occurs when notified to the Commission and listed in the Official Journal of the European Communities. These accredited bodies are sanctioned by the European Commission and the member states to interpret directives and standards, and issue test reports and certificates on conformity. When a product becomes suspect or an incident occurs, the national enforcement authority may consider a test report or certificate issued by a European body. Having the notified body mark, certificate, and test report usually shifts the onus of proof in the manufacturer s favor, since the product was evaluated and certified by European recognized experts. 

However, the formal proof of capability to produce quality of the companies involved and as precise a description as possible of the requirements and conditions of the constmction project is not sufficient to succeed with the constmction project. Those involved must also not only have the formal qualifications but also the capability, i.e. specialist knowledge, experience and availability of specialists, machines and equipment, to meet the project requirements Accreditation procedures and voluntarily certification associations offer the possibility that both testing and inspection bodies, which are involved in the context of qualify assurance, and the companies involved in constmction work can prove their specialist competence. 

Barrier requirement can be partial ( resistant ) or total ( proof), ranging from particulates and bacteria to fluids and viruses. In general, a hydrohead of >40 cm is required to compete in this market. To date, the only products that consistently pass the viral barrier test are fabrics reinforced with impervious film. For example, the viral barrier gowns give protection from viruses, which are within the nanometre size range, and therefore protective films are used. 

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