Radiographic examination

The efficiency of gas turbines is limited by the maximum allowable turbine inlet temperature (TIT). The TIT may be increased by cooling of the blades and vanes of the high pressure turbine. Cooling channels can be casted into the components or may be drilled afterwards. Non-conventional processes like EDM, ECD or Laser are used for drilling. Radiographic examination of the drilled components is part of the inspection procedure. Traditional X-Ray film technique has been used. The consumable costs, the waste disposal and the limited capacity of the two film units lead to the decision to investigate the alternative of Real-Time X-Ray. 

Radiographic Examination The following definitions apply to radiography required by the code or by the engineering design ... 

Appendix 6 contains requirements of experimental stress analysis. Appendix 8 has acceptance standards for radiographic examination. Appendix 9 covers nondestructive examination. Appendix 10 gives rules for capacity conversions for safety valves, and Appendix 18 details quahty-control-system requirements. 

Radiographic examination is either by x-rays or by gamma radiation. The former has greater penetrating power, but the latter is more portable. Few x-ray machines can penetrate beyond 300-mm (12 -in) thickness. 

Operation of this cooling water system was intermittent, resulting in long periods (30 days) of no-flow conditions. After IVi years, leaks were found at welded pipe junctions. Radiographic examinations revealed numerous additional deep corrosion sites at welds that had not yet begun to leak. 

Radiographic Examination. Main load carrying components of the equipment shall be examined by means of gamma rays or x-rays. The procedure used shall be in accordance with applicable ASTM standards. Types and degrees of discontinuities considered shall be compared to the reference radiographs of ASTM as applicable. The extent of examination and the basis for acceptance shall be agreed upon by the manufacturer and purchaser. 

DQ is a 57-year-old man who came to the emergency room because of shortness of breath. A radiographic examination demonstrates a large mass pressing on the bifurcation of the main stem bronchus. A biopsy demonstrates an aggressive lymphoma a five-drug chemotherapy regimen with both intravenous and intrathecal chemotherapy will start today. 

Closure Welds. The final weld connecting piping systems or components that have been successfully tested in accordance with para. IP-10.6 need not be leak tested, provided the weld is examined in-process in accordance with para. IP-10.5.1(c)(8) and passes with 100% radiographic examination in accordance with para. IP-10.5.2 or 100% ultrasonic examination in accordance with para. IP-10.5.5. 

Radiographic examination shall be performed based on the following requirements ... 

When radiographic examination is required for complete joint penetration weldments (circumferential, longitudinal, branch, and miter joint connections), the full length or circumference of the weld shall be radiographed. 

An Ej factor of 1.00 may be applied only if all welds, including welds in the base material, have passed 100% radiographic examination. Substitution of ultrasonic examination for radiography is not permitted for the purpose of obtaining an ) of 1.00. 

Shelton, C.G, and Marks, P.R. (1988). Failure of ductile interlayer composites High resolution X-radiographic examination having an opaque penetrant. J. Mater. Sci. Lett. 7, 673-675. 

Among quinolizidine alkaloids, sparteine and its stereoisomers have been studied in detail by X-ray analysis (42-50). It was demonstrated that proper conformation was not reorganized in monohydrates (42), diperchlorates (43), or methyliodides of a-isosparteine (11) (53). Unlike in the case of a-isosparteine, in spareteine diperchlorate rings C/D appear to have a boat-chair conformation (44-46). On the basis of spectroscopy data a cis conformation for sparteine methyliodide (12) was proposed (57,52). However, radiographic examination (53) of this compound showed it to have the trans conformation (13). 

Fever >38.5°C in a neutropenic patient demands antibiotic therapy. Often no focus for the infection is found with physical and radiographic examination. Mucositis causing translocation of bacteria, sinusitis, and anal Assure are frequently missed diagnoses in these patients. 

Measuring the child s blood lead level will be very useful in assessing the possibility of lead poisoning. There is evidence that at blood lead levels of about 10 Jig/dL, children are at risk for developmental impairment. Other tests that may be useful include examination for microcytic anemia and erythrocyte stippling and radiographic examination of the long bones for lead lines. 

Refs 1) R.E. Monks, "Burning Rate Measurement by Radiographic Examination of Operating Hybrid Motors , NAVWEPS Report 8359 (NOTS TP 3252), US Naval Ordnance Test Station, China Lake, Cal (1963) 2) J.R. 

The authors suggested that the recurrence of the manic symptoms could have been due to premedication with prednisolone. Exacerbation of manic symptoms after the use of glucocorticoids has been documented before, but never in a case of short-term premedication before contrast-enhanced radiographic examination. This report shows that even a short-term course of glucocorticoids can have significant adverse effects in patients with a history of mood disorders. 

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