TTF3 Coupler Assembly Cleanroom SLAC March 26, 2007 Jeff Tice

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 2 SLAC TTF3 Coupler Cleanroom TTF3 Coupler Assembly Cleanroom at SLAC –Class 10 15’ 6” x 16’ area –Class ’ x 15’ 6” area –Gowning area 11’ x 8’ area –Air Shower 8’ x 4’ 6” area Class 100 An air shower is an effective way to remove surface- deposited particles from personnel and parts, before they enter into the cleanroom.

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 3 SLAC TTF3 Coupler Cleanroom What is a Class 10 & 100 cleanroom? –According to the Federal Standard 209 (FED-STD-209E) This is the standard that SLAC will be using. –In a cleanroom rated as "Class 100" there may not exists more than 100 particles larger than 0.5 microns in a cubic foot of air. –This means the “Class 10” will have 10 particles of 0.5 microns in a cubic foot of air.

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 4 SLAC TTF3 Coupler Cleanroom Some cleanroom class specifications and tolerances

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 5 SLAC TTF3 Coupler Cleanroom What generates particles in a cleanroom? Microbes & Particulates –The source of micro-organisms is from people. –The source of particulates are from people and processes. –Microbes Microbes are dispersed from skin cells, and a human body sheds the outermost layer of skin every 24 hours. 1 BILLION SKIN FLAKES EVERY 24 HOURS. –A skin flake is typically 33 microns - 44 microns. They break down to typically 20µ (micron) but 7-10% are less than 10µ (micron). The equivalent diameter of bacteria carrying particles is 12-14µ (micron).. –Inert Particles Particles from people are dispersed: –From their skin –From their normal outdoor clothing –From their Cleanroom clothing (both through it and from the surface).

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 6 SLAC TTF3 Coupler Cleanroom What generates particles in a cleanroom continued? –Inert Particles cont. The mixture of skin flakes and fabric fibers fragment into smaller pieces, so that the total number of particles is: –10 BILLION EVERY 24 HOURS. This figure is dependent on activity rate, work activity, more particles. Demonstrations have indicated that typically this means: –1 MILLION PARTICLES EQUAL TO OR GREATER THAN 0.5 MICRONS ARE DISPERSED EVERY MINUTE. They disperse into the air from exposed skin, through the apparel fabric and also out through the neck, waist, trouser opening and wrists. –Remember the “Class 10” cleanroom can only have 10 particles of 0.5 microns per cubic foot! Cleanroom Air The task of the Cleanroom filter is to ventilate the atmosphere with microbial and particulate free air. They create a positive pressure, so that any air-borne contaminants present are from within the room. –HEPA filter can remove at least 99.97% of airborne particles 0.3 (µm) in diameter. –ULPA filter can remove at least % of any airborne particles with a size of 0.12 (µm) or larger.

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 7 SLAC TTF3 Coupler Cleanroom Current Configuration of the Cleanroom with respect to building 006 Highbay area.

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 8 SLAC TTF3 Coupler Cleanroom Preparing building 006 high bay area requires the removal of an existing bunker facility in order to accommodate the TTF3 Coupler cleanroom.

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 9 SLAC TTF3 Coupler Cleanroom Clearing out the existing bunker –All components and hardware have been removed –Steel support structure and blocks need to be removed by outside rigging contractor Requisition has been generated and vendor awarded Work to start on second week of April Block size and quantities: 9' x 9' x 3' 38,000 lbs. 3 total 6' x 4' x 3' 5,000 lbs. 11 total 6' x 3' x 2' 3,000 lbs. 8 total All blocks to be relocated to sectors 6 and 1 south road areas

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 10 SLAC TTF3 Coupler Cleanroom RWP (Radiation Work Permit) was performed on March 13, 2007 to cut steel plates that are radioactive in bunker Inside BunkerCutting of steel plates

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 11 SLAC TTF3 Coupler Cleanroom Deliverables for Processing TTF3 Couplers DeliverablesStatusTimeframe Contamination Control PlanIn-process2-3 weeks SLAC TTF3 Coupler Cleaning & Assembly Process In-process4-8 weeks SLAC TTF3 Coupler support structure design In-process4-8 weeks SLAC TTF3 Coupler support structure fabrication Need to start4-8 weeks

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 12 SLAC TTF3 Coupler Cleanroom Deliverables for Cleanroom fabrication DeliverablesStatusTimeframe Procurement Specification for cleanroom CompletedN/A Funding and budget approvalIn-process1-2 weeks Requisition for cleanroom to SLAC buyer Need to start<1 week SLAC buyer to award requisition to cleanroom vendor Need to start4 weeks Vendor to submit cleanroom design for SLAC approval Need to start2-3 weeks Vendor to fabricate cleanroom Need to start4-8 weeks

SLAC TTF3 Coupler Cleanroom March 26, 2007 SLAC 13 SLAC TTF3 Coupler Cleanroom Deliverables for Cleanroom & TTF3 Coupler qualification DeliverablesStatusTimeframe Cleanroom has passed Class 10/100 certification Need to start1-2 weeks Populate cleanroom with equipmentNeed to start2-4 weeks Run test coupons to qualify cleaning process Need to start1-4 weeks Start cleaning TTF3 CouplersNeed to start1-2 week