1. The auxiliary feedwater system supplies water to the steam generators in order to maintain a water inventory for removal-of the heat energy from the reactor coolant system by secondary side steam release in the event of inoperability of the main feedwater system or during startup and shutdown.
1. 在失去主給水或電站啟動、停堆期間，輔助給水系統(tǒng)向SG提供給水，即導(dǎo)出一回路熱量而所需的二回路給水量。
2. The auxiliary feedwater system has adequate capacity to maintain the reactor at hot standard and then cool the reactor coolant system to the temperature at which the residual heat removal system may be placed in operation.
2. 輔助給水系統(tǒng)具有足夠的能力來維持熱停堆，然后冷卻主系統(tǒng)直至停冷系統(tǒng)可以投入。
3. The auxiliary feedwater system provides complete redundancy in pump capacity and water supply for all case for which the system is required.
3. 任何時候，當系統(tǒng)需要時，輔助給水系統(tǒng)都具有足夠的冗余(泵和供水管線)。
4. The auxiliary feedwater system normally has two motor-driven pumps and one turbine-driven pump.
4. 輔助給水系統(tǒng)通常有2臺電動泵和1臺汽動泵。
5. The electric-motor-driven pumps are powered by offsite and onsite source, the turbine-driven pump takes steam from main steam line.
5. 電動輔助給水泵由廠外和廠內(nèi)電源供電，汽動泵的蒸汽來自主蒸汽管道。
6. The preferred sources of water for all auxiliary feedwater pumps are the condensate storage tanks from which water is fed to the steam generator by gravity.
6. 所有輔助給水泵的第一水源為凝結(jié)水箱，通過重力流向輔助給水泵后再向SG供水。
7. In the event that condensate storage tank is not seismically qualified, an emergency water supply tank be provided as a backup.
7. 由于凝結(jié)水箱的抗震能力不夠，配置應(yīng)急給水箱作為備用。
8. An unlimited backup water supply, essential raw cooling water system (or called service water system) is supplied to the auxiliary feedwater system.
8. 另一路的備用水來自原水系統(tǒng)（或稱為廠用水），當需要時可以不間斷地向輔助給水系統(tǒng)供水。
9. Since the essential raw cooling water system supplies poor quality water, it is not used except in emergency when the condensate supply is unavailable.
9. 由于原水系統(tǒng)的水質(zhì)得不到保證，除非在凝結(jié)水不可用的緊急情況下才使用。
10. In addition, the fire protection system may be connected downstream of each motor driven pump to provide an unlimited supply of raw water directly to the steam generators in the unlikely event of the site being flooded.
10. 另外，在每臺電動輔助給水泵的下游可聯(lián)接火災(zāi)保護系統(tǒng)(指消防水系統(tǒng))，當現(xiàn)場被水淹的時候，仍能不斷向SG提供原水。
11. The auxiliary feedwater is designed to start automatically and it will supply sufficient feedwater to prevent the relief of primary coolant through the pressurizer safety valves.
11. 輔助給水系統(tǒng)設(shè)計能夠自動啟動向SG提供足夠的給水，防止事故情況下穩(wěn)壓器安全閥起跳導(dǎo)致一回路冷卻劑流失。
12. The auxiliary feedwater system is designed to deliver water for pressures ranging from the residual heat removal system cut-in point to the highest set point of the steam generator safety valves.
12. 設(shè)計上，從停冷系統(tǒng)接入點壓力到SG安全閥起跳壓力，輔助給水系統(tǒng)都能夠提供給水。
