Recurrent inspection

Work equipment has to be safe during its entire life cycle. Therefore it has to be maintained and repaired if necessary. Regular recurrent inspections are to guarantee safe functioning and an early detection of possible flaws. In hxing inspection intervals the following aspects should be taken into account ... 

ISO 15 615 have to be complied with. The initial approval of acetylene plants has to be carried out by qualified persons and/ora notified body. Recurrent inspections are also required. 

When operating, planning, constructing, at the initial and recurrent inspections, during maintenance and service of acetylene gas cylinders, bundles and their supply units national, European or international rules, orders, regulations have to be complied with, e.g. ... 

For each quality objective you should have a plan that defines the processes involved in its achievement. Assess these processes and determine where critical decisions are made and who is assigned to make them. Audit the decisions and ascertain whether they were contrary to the objectives. A simple example is where you have an objective of decreasing dependence upon inspection. By examining corrective actions taken to prevent recurrence of nonconformities you can detect whether a person decided to increase the level of inspection in order to catch the nonconformities or considered alternatives. Any person found making such a decision has clearly not understood the quality objective. 

On one occasion after the polymer catch tank was opened, the waste plastic inside spontaneously caught fire. This also happened when a companion vessel was opened. On two other occasions, waste plastic removed from these vessels spontaneously caught fire after being placed in a dumpster. Investigations did not identify that the fires were likely related to the formation of volatile and flammable substances from thermal decomposition of the plastic. During inspections, the pressure relief device was found to be fouled with solid plastic, which could have rendered it inoperative. The potential consequences of such fouling were not analyzed, and no adequate measures were developed to prevent recurrence. 

Maintenance, surveillance and in-service inspection have a common objective, which is to ensure that the plant is operated in accordance with the design assumptions and intent, and within the operational limits and conditions. Maintenance, for example, should always be followed by a series of tests. Results of surveillance or in-service inspection should be compared with the acceptance criteria. If the results fall outside the acceptance criteria, corrective actions should be initiated. Such actions should include corrective maintenance measures such as adjustment, repair or replacanent of defective items to prevent recurrence. These activities should be planned and co-ordinated effectively. A conunon database should be established in order to share relevant data and evaluations of results among the organizations that are involved in the planning and implementation of MS I activities. 

The purpose of MORT analysis is to provide a systematic tool to aid in planning, organizing, and conducting an in-depth, comprehensive accident investigation (or inspection, audit, or appraisal) to identify those specific control factors and management system factors that are less than adequate and need to be corrected to prevent recurrence of the accident (or to prevent other undesired events). 

Pumps are surgically implanted subcutaneously, normally in the abdomen, and the catheter tip is usually placed in the peritoneal space, as intravenous deUvery generally has been less successful. The catheter is undoubtedly the weakest point in implantable pumps, and the most significant complication with these pumps has been recurrent episodes of apparent pump slowdown related to catheter obstruction. In the early days, these events were most often attributed to insulin precipitation in the delivery cannulas. However, more carefiil inspection revealed that the problem in the majority of cases was, in fact, caused by small fibrin plugs at the end of the catheter or even macroscopic tissue encapsulation of the catheter tip. 

During accident investigations, in addition to asking What action has been taken to prevent recurrence , the investigator needs to be aware of the chain of events leading up to the accident, and tracing it back, Similarly, on safety audits and inspections, when the risk of an accident has been identified, possible event chains should be investigated and action taken to remove potential causes. 

OSHA has also stated that where a voluntary self-audit identifies a hazardous condition, and the employer has corrected the condition prior to the inspection and taken appropriate steps to prevent recurrence, the Agency will refrain from issuing a citation, even if the violative condition existed within the six months limitations period during which OSHA is authorized to issue citations. 

In workplace inspection systems that function according to the principles of first-order feed back, the same types of deviations will recur. By periodic (e.g. yearly) analysis of the inspection reports, systematic recurrences of deviations will be identified. The group problem-solving technique that was presented in Section 13.5 is also applicable to the development of measures to prevent such recurrence. 

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