General guidance

As part of the design process, the safety analysis should be carried out by the 

The safety analysis, part of the safety assessment used in plant licensing, should proceed in parallel with the design process, with iteration between the two activities. The scope and level of detail of the safety analysis should increase as the design programme progresses so that the final safety analysis reflects the final plant design as constracted. 

The updating process should incorporate new information as it becomes available, address new issues as they arise, use more sophisticated tools and methods as they become accessible, and assess the performance of modifications to the design and operating procedures that might be considered over the life of the plant. 

The assessment of engineering aspects important to safety described in Section 3 and the safety analysis described in the present section should be carried out in parallel. 

The safety analysis should formally assess the performance of the plant under various operational and accident conditions, against goals or criteria for safety and radiological releases as may have been estabhshed by the operating organization, the regulatory body, or other national or international authorities, as applicable to the plant. 

There is a wealth of information on the methods of data collection that may be appropriate for ground gas or vapour investigations  

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Temperature. General guidance for converting tolerances from degrees Fahrenheit to kelvins or degrees Celsius is given in Table 5. 

The above exercise is only for a general guidance. In such cases, the manufacturer should be consulted who may offer a better and more economical design. 

The recommended ratings are for general guidance only. For more accurate selection of fuses, it is advisable to check these ratings by comparing their - t characteristics with tho.se of the selected OCR (sec Section 12.4.1). 

The temperature and time of curing, as indicated in Table A 13.4, are indicative and for general guidance only. They may vary with the type and quality of paint and effectiveness of the furnace. For exact details, consult the paint manufacturer. The operator may also vary the given parameters slightly, based on his own experience and the end results. 

The preceding chapters offered some general guidance on the sizing of the various types of compressors. Before the start of the specification, the equipment should be sized, at least in a preliminary manner. Actually, part of this may be integrated into the process calculation. However, after the process calculations are complete, a review of the equipment best suited to perform the task at hand should be made. 

Because the cause is unknown precautions are difficult to specify but general guidance includes that in Table 5.54. 

Eirst-aid needs m your workplace your questions answered. Revised 1994 General guidance for inclusion m first-aid boxes The Gas Regulations for everybody s safety Hot work on tanks and drums... 

Given below are the main types of paint, their properties and some general guidance on their use. For any specific requirements, it is always advisable to check with paint manufacturers. 

For new sites with 50 tons or more of LPG the Control of Major Accident Hazards Regulations 1984 apply. For sites which will have 300 tons or more (shortly to be reduced to 200 tons or more) these Regulations impose additional duties on site operators which include the prior submission of a safety report . This report has to set out the potential hazards of the plant and the means by which the risks are reduced to an acceptable level. The LPGITA has produced a Guide to the Writing of LPG Safety Reports which supplements the general guidance in the HSE booklet HS(R)21. 

This chapter is provided for general guidance. US readers should refer to Clear Air Act for specific guidance. 

Table 4.25 Bimetallic corrosion effects of nickel and nickel alloys (General guidance only other factors, including relative surface areas, often exert an important...

The mechanical properties reported in the literature for molybdenum and its alloys are frequently at variance. That this should be so is not surprising as the properties of molybdenum and its alloys are greatly affected by the prior history of the material, both thermal and mechanical. Far too often values are used without reference to the sources of the material, various states of heat treatment, etc. When mechanical properties are an important feature of the design application, advice should always be sought on the suitability as only the manufacturer has the complete data on the history of his own product. Physical and some typical mechanical properties given for general guidance are shown in Tables 5.2 and 5.3. 

While the few examples quoted provide some general guidance as to the behaviour of nickel-rich materials in contact with molten metals and salts, it cannot be over-emphasised that such behaviour can be very considerably modified by the presence of very small amounts of contaminants in the liquid media (see Sections 2.9 and 2.10). The effect of very small contents of sodium chloride on the corrosion of nickel-base alloys by sodium sulphate has been referred to previously and other reported examples involving trace amounts, particularly of gaseous impurities, underline the need for great care in interpretation of experimental results. 

For a hot water environment general guidance can be given for the desirable properties in good enamels. Five factors affecting enamel life are corrosiveness of contact liquor, design, operating conditions, life of sacrificial anode (if any) and the durability of the enamel coat. This implies that... 

Corrosion of metals and alloys stress corrosion testing. Part 1 General guidance on testing procedures... 

Table 8.3 provides general guidance for handling compressed gases. Selected common, hazardous compressed gases are discussed below. 

Table 9.3 provides general guidance for handling compressed gases. 

As general guidance, we would suggest the following guidelines ... 

The national codes and standards dictate the minimum requirements, and give general guidance for design and construction any extension beyond the minimum code requirement will be determined by agreement between the manufacturer and customer. 

The previous sections provided general guidance on materials for hydrogen gas service and emphasized the metallurgical variables that influence hydrogen embrittlement. This section describes additional factors that impact hydrogen embrittlement, primarily environmental and mechanical-loading conditions. 

General guidance for dose (or concentration) section for such studies ... 

Some general guidance for preparing a compatibility chart is given in Table 4.7. Hofelich et al. (1994), CCPS (1995b), and Frurip et al. (1997) provide more detailed information. Mosley et al. (2000) work through an example chemical reaction system. 

ISO 4892-1, Plastics - Methods of exposure to laboratory light sources - Part 1 General guidance, 1999. 

ISO 9370, Plastics - Instrumental determination of radiant exposure in weathering tests - General guidance and basic test method, 1997. 

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