§29.1435 Hydraulic systems

(a) Design. Each hydraulic system must be designed as follows: (1) Each elem ent of the hydraulic system must be desi gned t o wi thstand, wi thout detrimental, permanent d eformation, an y structural loads that m ay be im posed simultaneously wi th t he m aximum operating hydraulic loads. (2) Each element of the hydraulic system must be desi gned t o wi thstand pressures sufficiently greater than those prescribed in sub-paragraph (b ) to sh ow th at th e system will not rupture under service conditions. (3) There must be m eans to indicate the pressure in each main hydraulic power system. (4) There m ust be m eans to ensure that no p ressure in an y p art o f the system will exceed a safe lim it above the m aximum operating pressure of the system, and to prevent excessive pressures resul ting from any fluid volumetric change in lin es lik ely to rem ain closed l ong enough for such a change to take place. The possibility of detrim ental transient (surge) pressures duri ng operat ion m ust be considered. (5) Each h ydraulic lin e, fittin g, an d component m ust be i nstalled and support ed to prevent excessi ve vi bration and t o wi thstand inertia loads. Each elem ent o f th e in stallation must be protected from abrasion, corrosion, and mechanical damage. (6) Means for providing flexibility must be used t o connect poi nts, i n a hydraulic fluid line, between wh ich relativ e m otion o r differential vibration exists. (b) Tests. Each elem ent of the system m ust be t ested t o a proof pressure of 1.5 t imes the maximum p ressure to wh ich th at elem ent will be subjected in normal operat ion, wi thout fai lure, malfunction, or det rimental deform ation of any part of the system. (c) Fire protection. Each hydraulic system using fl ammable hy draulic fl uid m ust meet the applicable requi rements of C S 29.861, 29.1183, 29.1185, and 29.1189.