From: Timothy N. Stevenson
Sent: Thursday, January 28, 2010 5:22 PM
To: Alfred von Halle
Cc: Mike Williams; Erik D. Perry; Mark B. Cropper; John W. Edwards; Thomas E. Egebo; Masayuki Ono; Ronald L. Strykowsky; Michael Viola; Martin Denault; Craig D. Priniski; Subrahmanya Ramakrishnan; Guy Rossi; Neway Atnafu; Charles A. Gentile; Kristopher R. Gilton; John Winkelman; John Mitchell; Brian Clark; Jerome Siegel; Lawrence E. Dudek; Kelsey Tresemer; Bob Simmons; Orlando Guzman; Victor Garzotto; Carl M. Tilson; George Ascione; Keith R. Rule; Maria L. Pueyo; Patricia M. Bruno; Robert A. Hitchner; Richard (Pete) Szaro
Subject: NBI Upgrade Weekly Status 1/29/10
Al,

NBI Upgrade:  Preparations for planned peer reviews are underway. Design work on the Bay J-K plug continues. Based on vessel measurements, clearances for the proposed opening require a plug approach. A weldment is being developed that incorporates dimensional clearances between the coils. The RWM coil mounting will also be adapted to these plug dimensions. Stainless plates are being located to begin evaluations of cutting techniques. Design details and analysis continue on the armor. NBI duct and TVPS supports are being designed. Key layouts for advanced conceptual design of cryo line valving have been developed for the upcoming Services peer review. DI Water line layouts and details are in progress. Layouts of NBI platforms and access are being considered. Power system electrical layouts are nearly complete. 

NBI Decon:  Decon on the beam box internal surfaces has started. The larger capacity sprayer has worked well in wetting all interior regions with DI water during a decon session. The effluent collects in the bottom of the box where it will be drained and pumped to drums for sampling and future solidification and disposal.  After hosing down the sides, long handle equipment with rags are also used to wipe down surfaces. Surveys of progress have started inside the beam box using long pole equipment. Decon on lid cryo panels continues using sprayers also. Three full passes have been performed on these interior panels with very good results. Breathing air disposable hoods are employed for both of these decon activities and are working well to minimize exposures.

Regards,

Tim



Timothy N. Stevenson, NBI Project Manager

Head of Experimental Heating Systems & Neutral Beam Operations

LSB 316  C Site
Princeton Plasma Physics Laboratory
Princeton University
P.O. Box 451
Princeton, NJ 08543

Office (609) 243-2657
FAX (609) 243-3248
email: tstevenson@pppl.gov

Skypager # : 2047351


You can visit the home page of the DOE Princeton Plasma Physics Laboratory
at http://www.pppl.gov