inventory

22:59 Jul 2, 2016 

Surely, you mean I am NOT obligated or forced to do anything I don't want to do! [... you are forced to answer these questions ....]. Masoud, I apologize, but also bear in mind you ask for a word or a phrase, and then when the proposals are provided, you then seek more and more clarification, sometimes two or three additional questions ..... when all colleagues are merely trying to explain terms you ask for, and it would appear at times, you are not happy with explanations provided. I think very few of us here are nuclear physicists or scientists but rather translators, as much as you are! Hope this clarifies now! Regards.

22:46 Jul 2, 2016 

Above all, thanks for your time. Kindly please bear in mind that you are forced to answer these questions if you found me frustrating.

22:37 Jul 2, 2016 

With that said above, again, "inventory" is the sum total of all parts/items acting in unison. I don't know how else to describe it or what more I can add, and furthermore, what I have included here is just through research (something you yourself could have done). Regards.

22:34 Jul 2, 2016 

Heat is exchanged with the feedwater in the steam generators generates steam which is then routed to the turbine by the main steam lines.
****The systems involved in the core cooling function are: - the main steam system, the turbine bypass system, the steam generator feedwater system, the start-up and shutdown feedwater systems (these systems are used under normal operation) - the residual heat removal system (used during shutdown) - the emergency feedwater system, in the event of loss of feedwater or of the start- up and shutdown feedwater system - the chemical and volume control system, to maintain the inventory of reactor coolant water and compensate for minor leakage from the RCP [RCS] - the safety injection system: o to maintain the inventory of the reactor coolant in the event of a reactor coolant system break - to remove heat in back-up of the residual heat removal system o to remove heat in the event of complete loss of the heat removal functions****

22:33 Jul 2, 2016 

uk-epr sub-chapter e.1. description of the reactor coolant system
http://webcache.googleusercontent.com/search?q=cache:MCtb-D2...
DESCRIPTION OF THE REACTOR COOLANT SYSTEM 1. FUNCTIONAL ROLE The Reactor Coolant System (RCP) [RCS] fulfils the following functions: a) Radioactivity boundary The RCP [RCS] serves as a boundary against leaks of radioactive products in the event of fuel cladding failure. b) Heat transfer from the reactor - core cooling The main function of the RCP [RCS] is to transfer heat from the reactor core to the secondary system to produce steam used for turbine operation. Heat is transferred from the core to the steam generators by the reactor coolant.

22:32 Jul 2, 2016 

This is the last try. I clearly said in the earlier postings that the system was not the same as you describe, but I also said "inventory" is best described as euphemistic technical jargon. Frankly, both Terry and I have tried our hardest to explain ourselves. I am not a nuclear scientist. ***"Inventory" for want of a better term, and which I already described above (or rather through research) is the sum total of all parts working in unison, IMO***. As far as I am concerned and you miss the point I was trying to make is whether it is a "cooling" system or a "core" system that the essential elements work the same.

21:53 Jul 2, 2016 

Thanks for your answer. I do not think that the answer you provided is exacly what I want becuase, that link provides a description for "reactor core inventory" and my term is " reactor cooling system inventory". They are similar with each other, however, I think that there is sharp distinction between these two terms, isn't it?

21:50 Jul 2, 2016 

Last paragraph:
Beginning in the early morning of 14 March, decay heat removal was sequentially restored to Units 1, 2 and 4. By 18:00, the Unit 1 and 2 reactors were in cold shutdown, followed by Unit 4 at 07:15 on 15 March.
UHS: ultimate heat sink
RCIC: reactor core isolation cooling
RCS: reactor coolant system
ERC: Emergency Response center
SRV: safety relief valves
DW: Dry well
SC: suppression champer

21:46 Jul 2, 2016 

This section of the document is only comprised of four paragraphs, and these paragraphs are:

As described in Section 1.3.6, off-site power was maintained at the site after the earthquake by one remaining off-site source, but tsunami flooding resulted in the loss of the UHS at Units 1, 2 and 4. The operators were successful in depressurizing the reactors using the SRVs and using the RCIC systems to maintain RCS inventory, but both the SRVs and the RCIC systems transferred heat from the reactors to the water in the SCs. With no decay heat removal capability, DW pressures climbed and the SC water temperatures on Units 1, 2 and 4 increased to the point where they became inoperable. ERC personnel recognized that the critical issue was establishing decay heat removal for Units 1, 2 and 4. Based on equipment observations, the ERC prioritized inspection/maintenance of selected equipment in the heat exchanger buildings. This included replacing selected pump motors on Units 1 and 4 and installing approximately 9 km of temporary cables to route power from operable power panels and/or mobile generators to the required pumps.

13:30 Jul 2, 2016 

Perhaps this may help:
http://english.stackexchange.com/questions/70045/what-does-t...

'Reactor core inventory' is industry jargon for the chemical composition of the reactor core.
This phrase is best described as euphemistic technical jargon. The U.S. Nuclear Regulatory Commission defines reactor core to mean "the central portion of a nuclear reactor, which contains the fuel assemblies, moderator, neutron poisons, control rods, and support structures. The reactor core is where fission takes place." The fuel is radioactive and supports a controlled (ideally!) fission chain reaction that generates a variety of additional radioactive isotopes and other products, such as Iodine-131 and Caesium-137. Together, all this different radioactive stuff is contained in the reactor and known in nuclear power jargon as the reactor core inventory.