Aging consideration

This property can be improved by the addition of antioxidants. Higher zinc oxide loadings increase resistance to heat ageing. Paraffin wax offers surface protection by blooming to the surface during curing. Low sulphur or sulphurless cure improves heat ageing considerably. 

Venuto, P. B., Hamilton, L. A., Landis, P. S. Organic reactions catalyzed by crystalline aluminosilicates- II. Alkylation reactions mechanistic and aging considerations, J. Catal., 1996, 5, 484-493. 

If the prescription is for a female of childbearing age, consideration will need to be given to whether she may be pregnant or breastfeeding. 

Venuto, P.B., L.A. Hamilton and P. S. Landis. Organic Reactions Catalyzed by Crystalline Aluminosilicates, n. Alkylation Reactions Mechanistic and Aging Considerations. J. Catal., 1966, 4, 484-493. 

Subsea Oil and Gas Pipeline Integrity Management under Aging Considerations.6... 

SUBSEA OIL AND GAS PIPELINE INTEGRITY MANAGEMENT UNDER AGING CONSIDERATIONS... 

Sindelar, R. (2010). Materials performance and aging considerations for power reactor (PR) and research reactor (RR) spent nuclear fuel in storage. IAEA International Conference for Management of Spent Fuel from Nuclear Power Reactors (p. ppt). Vienna, Austria IAEA. http //www-ns.iaea.org/meetings/rw-summaries/vienna-2010-mngement-spent-fuel.asp (accessed July 27, 2014). 

For those radionuclides for which submersion (external dose) is limiting, the occupational DAC in Table 1, Column 3, was divided by 219. The factor of 219 is composed of a factor of 50, as described above, and a factor of 4.38 relating occupational exposure for 2,000 hours per year to full-time exposure (8,760) hours per year). Note that an additional factor of 2 for age consideration is not warranted in the submersion case. 

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