# Presentation: 692171

## SNS Mercury Target Status

**2****nd**** International High-Powered Target Workshop**

**D. C. Lousteau**
**D. Conner, G. Rennich, B. Riemer, **

**Oak Ridge, TN**
**October 10, 2005**

## Status of SNS Target & Mercury System

**The assembly of target carriage & mercury loop in the service bay was started  in June 04 and was completed in February 05**
**Target module was installed in June 05**
**The target loop has been run with H20 to verify flow parameters**
**Remote Handling testing are currently being conducted**
**Mercury will be loaded in November**

## SNS Mercury  Target System

**Target Vent**

**Core Vessel Drain**

**Gas Supplies to  Target**

**Floor Shielding**

**Above Floor Shielding**

**Pump**

**Vacuum Pump **

**Target on Carriage**

**Hg Storage & Spill Collection**

**Utility Valve Panel**

## Mercury Process Loop Components

- Mercury Circulation Pump

- Hg/H2O Heat Exchanger

- Target Shroud Water Delay Tank

- Storage & Collection Tanks

- Off-Gas Valve Panel

- Hg Transfer Valve

## Mercury Process Loop Isometric View

**Target**

**Pump**

**Heat exchanger**

**Storage and collection vessels**

**Transfer valve**

## Mercury Flow Parameters

**	****	**
- 		Mercury volume	380 Gallons (1450 l)
- 		Mercury Weight	21.5 tons
- 		Pump speed 	440 RPM
- 		Total flow	380 GPM  (24.5 l/sec)
- 		Window flow	  25 GPM  (1.5 l/sec)
- 		Pump nozzle pressure	  65 PSIG  (4.5 bar)
- 		Bulk target pressure	  45 PSIG  (2.8 bar)
- 		Window target pressure	  42 PSIG  (2.9 bar)
- 		Average flow velocity	    3 FPS   (1 m/sec)
- 		Maximum mercury temperature	195 °F (90 C)

## Detail of Interface Between Target Carriage and Core Vessel

**Water, Gas, & Vacuum**
**Connections To Target**

**Track In Vessel Port**

**Roller on Target**

**Inflatable Seal**
**To Vessel Port**

**Carriage Rails**

## Slide 8

## View of Service Bay At Start of  Target System Installation, May 2004

## A Pit In the Floor Contains the Hg Storage Tank and Spill Collection Basin 

_**Collection Basin Installed in Pit**_** **

**STORAGE TANK**

**STORAGE TANK UTILITY MAST**

**TRANSFER VALVE**

**TRANSFER VALVE**
**ACTUATOR**

**MERCURY TRANSFER LINE**

_**Storage Tank in Collection Basin**_

## The Mercury is Circulated by a Centrifugal Pump

_**External View of Pump**_

_**Pump Removed From Vessel**_

## The Mercury Loop Contains a Double Wall Heat Exchanger

_**The Heat Exchanger Was Fabricated Using a Fixture to Locate The Nozzles So That an Interchangeable Unit Could be Built in the Future**_

_**H.X. Installed in Service Bay**_

## Target Carriage at Vendor in  August 2004

## Target Carriage Piping

## Overhead View of Installation In Service Bay – Sept ‘04

- Target Carriage

- Mercury Pump

- Heat Exchanger

- Off-Gas Valve Panel

## Very Good Alignment Achieved in Carriage Installation

- _Rail Flatness_
- _2 Rails @ 63 Ft (19 M) long_
- +/-  0.003 in (0.07 mm)

- _Carriage to Tunnel Gap Checked at 51 Places_
- Avg. = 0.44 in (11.2 mm)
- Std Dev. = 0.07 in (1.8 mm)
- Max = 0.53 in (13.5 mm)
- Min  = 0.28 in (7.1 mm)

- _Target Parallelism  to Beam_
- Horizontally
-    Offset = 0.005 in (.13mm)
-    Angle  = 0.003 deg.
- Vertically – 0.01 deg.

## SNS Target Module

- Weight: 	2,490 lbs (w/o Hg) (1,130 kg)
-                + 1,750 lbs ( Hg) (795 kg)
- Length: 	85.4 inches (2,170 mm)
-  Width: 	25.6 inches (650 mm)
- Height: 	27.8 inches (706 mm)
- Material:    316L (LN) SST

- CG: 3.1” from Flange Surf
-         4.5” from Top Surf

## Exploded View of SNS Target Module

## Hg Target Vessel Design

- Instrumentation
- Jumper Connector

- Leak Detection
- MI Cables

- Thermal Conductivity Leak Detector

## Mercury Vessel Fabrication Components

- ( Rear Body & Mounting Block Made as One part)

## Fabrication of Front Body of Hg Vessel

_**Inner Window Attached**_

_**EDM Machining of Front Body**_

_**The Front Body/Inner Window Assembly Was Kolsterized**_

## E-Beam Welding of Outer Window To Hg Vessel

_**A second Kolsteizing Treatment Was Applied After The Outer Window Was Attached **_

## Fabrication of Components of Hg Vessel

_**Transition Region**_

_**Rear Body with Mounting Block**_

## Target Module Installed on Carriage In Service Bay

## Target Service Bay – April 2005

**Hg Pump**

**Carriage**

**Dual Arm Telerob Manipulator on extended pedestal**

**7.5 Ton Crane**

**Target Service Bay **
- Stainless-steel lined
- 4 window workstations
- 8 through-the-wall manipulators
- 7.5 ton crane
- Pedestal mounted manipulator
- Shielded transfer bay
- XFD to complete installation and testing