Maintenance precautions

Abnormal operating conditions or neglecting necessary maintenance precautions cause most bearing failures. Bearings may experience premature and/or catastrophic failure on machines that are operated heavily loaded. 

It is very important to maintain a vigorous, well-documented maintenance plan for the vacuum furnace. In addition to normal preventative maintenance, below is a list of additional maintenance precautions that go beyond normal maintenance tasks. 

Normally such mills are installed in groups known as wind farms to provide a sizeable power source, except in remote areas, where power demand may be restricted to a very limited area and small mills may suffice. When mills are installed in groups, precautions are necessary to ensure that there is enough distance between any two mills so that there is no hindrance to routine maintenance, on the one hand, and obstruction of wind to other mills, on the other. For more details, refer to the literature available on the subject in the Further reading at the end of the chapter. 

This is a location which is continuously contaminated with explosive gases, chemical vapours or volatile liquids and thus is highly susceptible to fire hazards. Installation of electrical machines in such areas should be avoided as far as possible, to reduce cost, facilitate maintenance and take other precautions. 

All precautions with regard to the purification of tetrahydrofuran, the quality of the iron powder, the rapid stirring, the maintenance of a nitrogen atmosphere, and the handling of cyclopentadiene, described in the preceding preparation, are followed. 

General conditions of work, e.g. maintenance of adequate general ventilation, local exhaust ventilation, access, lighting, fire precautions, occupational health measures, housekeeping. 

A permit system is necessary for the safe conduct of maintenance operations. But issuing a permit in itself does not make the job safe. It merely provides an opportunity to check what has been done to make the equipment safe, to review the precautions necessary, and to inform those who will have to carry out the job. The necessity of saying this is shown by the following quotation from an official report ... 

Tile standard requires tlie preparer to describe tlie precautions for safe handling and use. Tliese include recommended industrial hygiene practices, precautions to be taken during repair and maintenance of equipment, and procedures for cleaning up spills and leaks. Some manufacturers also use Uiis section to include useful itiformation not specifically required by the standard, such as EPA waste disposal tnethods and state atid local requiretnents. 

Special Precaution. Articles 500 through 504 require equipment construction and installation that will ensure safe performance under conditions of proper use and maintenance. 

Reasonable Precautions Condition under which the client is required to take reasonable precautions to safeguard the insured property and secure the premises, including the installation, use and maintenance of any security precautions stipulated or agreed with the insurance company. 

If oil is pressurized by compressed air, an explosive hazard exists. If high-pressure air encounters the oil, it may create a diesel effect, which may result in an explosion. A carefully followed preventive maintenance plan is the best precaution against explosions. 

Before carrying out any inspections or maintenance procedures on belt drives, make sure they are not in operation. Equipment operators should electrically isolate the drive system and lock-out and tag the machine that is to undergo maintenance. Once this precaution has been taken, the belts and pulleys can be removed from the machine for inspection, cleaning, and repair. 

Many accidents occur because the operator or maintenance person does not understand the hazards involved or has not been instructed on the precautions to be taken. The policy document should identify the main hazards within the company with advice on which rules must be obeyed while carrying out a hazardous task. General rules should also be included to cover items such as untidy work areas, replacement of guards, the use of protective cloth-ing/equipment where appropriate, safe working practices in handling goods and materials, etc. It is essential that on the introduction of new products, processes, operations or plant and equipment that any hazards associated with these are brought to the attention of all concerned. 

Topics should embrace a knowledge of the hazards and precautions, including the use and maintenance of protective devices including personal protection, under both normal and abnormal operating conditions including emergencies. 

Fire precautions including control of ignition sources, e.g. smoking, maintenance activities, vehicular access (see Chapter 6) and limitation of combustible materials, e.g. packaging. 

The section on components deals with all materials that may be used in the manufacture, processing, and packaging of drug products, plus materials used for maintenance of the building and equipment. They must be stored and handled in a safe, sanitary, and orderly manner. These precautions are needed to prevent mix-ups and cross-contamination of drugs and drug products. All items should be held until they have been sampled and tested according to the company s specifications and not released until the tests have been completed. In this section it is required that ... 

Note that, as a matter of precaution, greenhouses/closed rooms should be thoroughly ventilated after each treatment, regardless of whether the product is classified and labeled in regard to health protection or whether the risk assessment reveals a specific exposure risk for workers. In a similar sense, and whenever possible, crop maintenance activities should be finished before plant-protection products are applied. 

Preparation of Equipment for Maintenance The essential feature of this procedure is a permit-to-work system The operating team members prepare the equipment and write down on the permit the work to be done, the preparation carried out, the remaining hazards, and the precautions necessary. The permit is then accepted by the person or group who will carry out the work and is returned when the work is complete. The permit system will not make maintenance 100 percent safe, but it reduces the chance that hazards will be overlooked, lists ways of controlling them, and informs those doing the job what precautions they should take. The... 

As the design becomes more detailed, the PH As will have to emphasize the safety of maintenance workers. The design should be configured to minimize the number of maintenance activities in contaminated areas to reduce worker risk and to ensure that workers in DPE suits can access the areas easily and safely. This precaution could also reduce the waste streams arising from DPE suits and decontamination solution used during maintenance activities. 

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