ARCHIVED REPORTS LEC APPLICATION FOR CERTIFICATION

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® WorleyParsons resources&energy 3.16.1 Design Temperature and Pressure The design pressure and temperature for piping will be consistent with conditions established for the design of the associated system. The design pressure of a piping system will be the maximum of- The £The set pressure of a relief valve mounted in the line • The set pressure of a relief valve installed on equipment that is connected to the line, adjusted accordingly to account for static head and friction loss • If the system has no PSV or can be isolated from a PSV, the maximum pressure upstream equipment can generate (i.e.,pump shutoff pressure). • The maximum sustained pressure that may act on the system plus 25 psi. The main and process steam piping design pressures will be in accordance with applicable codes. All design pressure values will be rounded up to the next 5-psig increment. The design temperature of a piping system will be based on: • The maximum sustained temperature which may act on the system plus 25°F If a heat exchanger of piece of equipment in which heat is being removed can be taken out of service or bypassed, then the line downstream of that equipment will be designed for the resulting higher temperature. 3.16.2 General Design and Selection Criteria Piping will be designed in accordance with the requirements of the Code for Pressure Piping, ASME B31.1-Power Piping, and other codes and standards referenced in Section 2, Codes and Standards. Pipe stress analysis will be performed in accordance with ASME B3 1.1. All pipe supports will be suitable to restrain the piping where subjected to external loads as stipulated by the California Building Code — Seismic and Wind Load Criteria. Vents and drains will be provided, as service requires. Material selection will generally be based on the design temperature and service conditions in accordance with the following: • Carbon steel piping materials will be specified for design temperatures up to and including 800°F. • One and one-quarter percent chromium alloy steel piping materials will be specified for design temperatures ranging from 805°F to 950°F. 21/4 percent chromium alloy steel piping may be specified for design temperatures ranging from 955°F to 1100°F, however, 9 percent chromium alloy steel piping will be specified for high pressure steam and hot reheat steam systems which have a design temperature of approximately 1065°F. Lodi Energy Center 3.3 - 19 LEC AFC 071508 Rev.A