Mobile boration system

Patent metadata

Field	Value
Publication number	US-9266756-B2
Application number	US-201313792465-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Apr 19, 2012
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A mobile boration system ( 60 ) has a number of components that are mobile and include a water source ( 10 ), H 2 BO 3 powder supply ( 14 ), a mixer to mix the solution ( 20 ) capable of providing a boric acid solution ( 30 ) with minimal air entrainment and optional heat exchanger(s) ( 12 ), and wherein the system ( 60 ) is capable of transport to a nuclear power plant facility by land, sea or air, rather than being in place in a large vulnerable footprint.

First claim

What is claimed is:

1. A mobile boration system configured to provide nuclear reactor systems with borated coolant that can mix components of the borated coolant on site, to provide borated water, the mobile boration system comprising:
a) a water source or a connection to an external water source;
b) a water soluble boron powder source;
c) a heater to heat the water;
d) a pump operable to provide a motive source to move water to a desired location;
e) a metering system configured to meter flow of the boron powder source and water heated by the heater;
f) a mixer configured to allow metered mixing of the heated water and the water soluble boron source to provide a metered concentration of water/boric acid slurry;
g) a further heater configured to heat the slurry, wherein mixing of the slurry by the mixer and heating of the slurry by the further heater provides a borated/boric acid water solution;
h) a fluid exit for the solution; and
i) a transport arrangement configured to transport the solution to a nuclear reactor system, wherein the transport arrangement eliminates the need for onsite storage of conventionally large volumes of borated/boric acid water solutions.

2. The mobile boration system of claim 1 , wherein the pump of (e) is selected from the group consisting of a positive displacement pump and a centrifugal pump with a flow meter.

3. The mobile boration system of claim 1 wherein the water soluble boron powder source is H 2 BO 3 powder and the metering system is a screw feed hopper.

4. The mobile boration system of claim 1 , wherein the mixer is a mechanical mixer which can provide sufficient agitation to ensure the slurry is dissolved into the solution with an air entrainment in the solution of less than 1 vol. %.

5. The mobile boration system of claim 3 , wherein the screw feed of the hopper can provide a controlled volume flow of H 3 BO 3 powder.

6. The mobile boration system of claim 1 , wherein the transport arrangement is selected from a truck trailer, a railroad flatbed, sea transport or air transport.

7. The mobile boration system of claim 1 , further comprising a chemical additive tank housing an additive, said additive helping the slurry dissolve into the solution.

8. The mobile boration system of claim 1 , wherein the water source is a tank of water on the transport arrangement.

9. The mobile boration system of claim 1 , wherein the water soluble boron powder source comprises a H 2 BO 3 powder source.

Assignees

• Westinghouse Electric Corp

Inventors

• Swantner Stephen R
• Vanston Ryan T

Classifications

• Y10T137/2496

  Self-proportioning or correlating systems · CPC title

• G21D1/02 Primary

  Arrangements of auxiliary equipment · CPC title

• G21C15/182

  comprising powered means, e.g. pumps · CPC title

• G21D3/04

  Safety arrangements (emergency protection of reactor G21C9/00) · CPC title

• G21C9/033

  by an absorbent fluid · CPC title