Cornell High Energy Synchrotron Source
Procedure: CHESS Safety Tour
Prepared by: KMM
Date Revised: 1/25/17
Date Effective: |
Date Expires: |
Approved by: CC |
Materials and Equipment Needed
- To give new users and visitors a tour of CHESS East, West, G-line, and the CHESS Operations area
- To demonstrate basic station safety procedures.
- Radiation badge or dosimeter
- Users should have their safety badges before they are given a tour.
- Users who are staying in the lab after the tour and will be doing work need to wear appropriate footwear – no sandals or open-toed shoes.
The following is a suggested route and script for giving a tour of CHESS areas to users.
1.Loading Dock Door (Stand by swipe pad outside the door)
The doors to the building are locked from about 6pm to 7am every day during the week and are locked at all hours on weekends and holidays. To unlock the door, hold your Cornell ID card (or temporary ID card) in front of the swipe pad. There will be a “beep,” a green light will flash on, and the door will unlock. If you forget your card or it doesn’t work you can press button on the intercom to the right of the door to page someone inside the building - please stand close and speak loudly. When someone responds you can tell them you are working at CHESS and need access to the building.
2. Stockroom (Stand inside loading dock door)
In the trailer at the end of the loading dock is the stockroom. The stockroom contains items such as: office supplies, electrical supplies, batteries, bolts, screws, etc. The stockroom is locked, so you will need to see the CHESS Operator on duty for access to the stockroom.
3. Entrance into CHESS East (Stand inside loading dock door/LN2 area)
The CHESS East experimental areas are through this doorway (point to 40-ton doorway). You must be wearing your radiation badge to go into this area. Please do not go immediately to the experimental area when you arrive; you must first go to the CHESS Operations area and get your badge. Once you have your badge on, you may use this doorway to access the LN2 area.
4. Liquid N2 (Stand at the LN2 fill system)
If you are going to be using liquid N2 while at CHESS you will fill your dewars here. If you need to use this system you should contact the CHESS operator for further instruction.
(If the users know they will need LN2, show them how to operate the fill tap. Gloves and face shield should be near the LN2 area. Remind them to only fill their dewars from the tap that does not have the hose connected to it, to open the valve slowly because it is loud, and to close the valve completely when they are done).
5. Computer Room (pause near elevator)
The CHESS Computer Room is located on the third floor in room 315, equipped with Linux, Windows, and Macintosh computers for temporary use for users. See the CHESS Operator on duty if you need directions to the computer room or have any questions about it.
(If users anticipate they will be using the computer room or request to see it, you may go with them. Otherwise, it is not necessary to go into the computer room on the tour).
Point out both of the restrooms in the hallway.
7. Aerial View of Wilson Lab (Stand in front of the picture/CHESS People board in hallway)
This is an aerial view of Wilson lab and the synchrotron. Right now we are standing in this area (point out the location of CHESS within the picture) known as CHESS where you will be working. Electrons travel counter-clockwise and positrons travel clockwise.
Here are photos of the CHESS staff. This may be helpful if you are looking for someone in the lab.
8. Map of CHESS (Stand in front of detailed picture of CHESS in hallway)
This is a more in depth picture of CHESS. Right now we are standing here (point out location). This is CHESS West (point to area on map) where we have several stations utilizing synchrotron radiation from the electrons. This is CHESS East (point to area on map) where the stations utilize synchrotron radiation from the positrons. You will be working here (point out station that the user will be working) within CHESS East/West.
Note: G-line is not pictured on this map.
9. CHESS Operator Call Button (Stand next to call button)
There is a CHESS Operator on shift 24 hours a day. We are here to help you with any kind of questions you may have. The monitor behind the desk will display the name and photo of the operator on shift. If you require assistance and the operator is not present at the operations desk then you may page him or her by flipping the toggle switch. Leave it flipped up until the operator responds to your page.
10. Status Page (Stand near status panel in Ops)
Monitors displaying the status page are found throughout CHESS. The CHESS Operator will post notes on the status page whenever there is anything changing with the beam, and anytime there is a shift change for operators. A green note indicates the machine is running normally. Red notes indicate the beam is down. Yellow notes indicate some type of changing condition.
At the top of the monitor you will see a graph showing the current of the electron and positron beams over the past 24 hours. The electron current is shown in blue. The positron current is shown in red.
We run our positon beam in top-off mode, so every few minutes more positrons are injected into the machine, which keeps the current steady. The electrons are injected every (length of run time) minutes, which is what the countdown in the upper corner of the monitor is for.
The status page can be accessed online, so you can check on the status of the machine from your hotel or home.
11. Scoreboard (Stand at scoreboard in Ops)
This is the scoreboard, which shows the current operation of CESR. In the upper left hand corner is the current for electrons (top number) and positrons (bottom number). The number in the middle is the run time clock indicating the time remaining in the current run. When the run time clock is at 0, CESR will inject the beams back to the starting current and reset the run time clock. (Can give more details about specific CESR run conditions, e.g., run lengths, starting current, if either beam is in top-off mode).
The operator will make announcements when refills will be happening and when users may start collecting data again.
The screen is broken down into three 8 hour shifts, the first being owl shift, second being day shift, and the third being evening shift. The currents are also show in graph form within the shift grids. Each block represents 2 hours of a shift. Scoreboards are located at every station as well as throughout the lab for your convenience.
12. Badges (Stand at badge rack in Ops)
All persons entering any experimental areas must have a radiation badge. Place your badge on an article of clothing that will not be removed while in the laboratory. The badge must be worn prominently between the waist and neck. Badges are to be worn only in the building, therefore when leaving the building your badge should be kept on the badge rack in the area corresponding to station where you are working.
When your beamtime is complete, you must see the CHESS Operator to check out in person. The CHESS Operator will then collect your badge, and parking permit and temporary IDs, if you have them.
13. Hazardous Materials Board (Stand Next to badge rack)
This board identifies any hazardous materials currently being used at CHESS. Hazardous materials not listed as part of your experiment cannot be brought to CHESS.
14. Interlock System and Radiation Shielding (Stand at entrance to CHESS West)
CHESS has an extensive safety interlock system to ensure safe use of synchrotron radiation. When an interlock is set, crossing through it will set off alarms and may trigger an automatic shutdown of the beam. If you see an area blocked off by a door, gate, or barrier, do not go into that area. Ask the CHESS Operator if you have any questions about where you can or cannot go.
The CHESS experimental areas are separated from the CESR tunnel by shielding walls. The shielding effectiveness is only guaranteed up to a height of eight feet above the ground, so do not stand on ladders, tables, or chairs within the experimental areas.
15. Machine Shop (Stand outside shop)
Here is the machine shop, which is equipped to meet the immediate experimental needs of the users. Only trained, approved individuals may work in the machine shop. If you anticipate the need to work in the shop while you are here, you will need to receive training from the machinist, who is generally here from 7:30AM – 4PM Monday-Friday. The shop policies are posted on the door. See the CHESS Operator on duty for more shop information if necessary.
16. Chemical Room (Stand outside the chem room)
This is the main chemistry room. You must seek prior approval from the CHESS Safety Committee for any chemicals you will be bringing with you. This is a mercury-free facility so please do not bring mercury thermometers to CHESS. There are safety glasses located outside of the chemistry room - please put them on before entering.
Be aware that some groups will occasionally work with particularly hazardous chemicals, such as hydrofluoric acid. When that work is being done, there will be a sign on the door and you should not enter the chemistry room until the hazardous work is complete and the sign is removed from the door.
17. Cold Room (Stand outside the cold room)
This is the cold room where users can store their samples. There is a bench and small prep area in the cold room, as well as space to store your samples. If you do keep samples in the cold room, please label them with your group name and date.
There is an ice maker just outside the cold room if you need ice.
There is also a -80C freezer you may store samples in. Please do not put dry ice in the freezer.
18. Lounge (Stand inside the lounge)
This is the lounge with a microwave, toaster oven, refrigerator, and coffee pot. Please label your food and clean up after yourself, any food left behind will be disposed of at the end of your beamtime. If you want to keep extra food in here while you have beamtime, please place it in the clear plastic containers on the shelves. There is a scoreboard in here so you can keep an eye on the condition of the beam.
19. Fire alarm (point to stairway to trailer)
If you are in this area and you hear a fire alarm you should proceed to the nearest exit one of which may be up these stairs and outside by the trailers. Once outside, gather in the grassy area near the second floor patio where you will receive further instructions.
Point out the unisex restroom near lounge, which also has a shower in it.
(Stand by call box in CHESS Ops) There are several yellow call boxes located throughout the lab that work as an intercom to Cornell Police. Pressing the button on the box will immediately connect you with Cornell Police.
. (Stand in entrance/hallway to CHESS West) While you are becoming familiar with your CHESS work area, be sure to note the locations of the nearest Exits, Fire Extinguishers, Fire Blankets, Fire Alarm Pulls, Area Status Boards, call boxes, and eye wash stations.
(point out fire extinguisher and fire alarm) In the event of a fire, pull the fire alarm if is safe to do so and leave the building through the nearest exit.
PROCEED TO USERS’ STATION
- If users are working in CHESS East:
- Stop at entrance to CHESS East.
- If you are in the East and there is a fire alarm, follow the green path to the loading dock door entrance and wait outside for further instruction.
- Show the users the eye-wash in the F1 prep area
- This is the closest eyewash to where you will be working. To use the eyewash, remove the orange covers, step on the pedal under the sink, and pull out the lever on the faucet.
- If users are working in G-line
- Stop outside of the G-line chem room
- G-line provides access to a chemistry room for users, as well as a sample prep area for SAXS users. No acids are allowed in the G-line chemistry room. Please make sure anything you keep in the chem room is labeled with your name and contents. Please remember the chem room is a shared space, and clean up after yourself.
- Stand at G-line external door
- If you are working at G-line and you hear a fire alarm you should exit here. The meeting area outside is the second floor patio of Wilson Lab. Make your way towards the patio and await further instructions.
- Remember to get your badge from the CHESS Ops rack before you go to your station.
- Scoreboard (Stand near scoreboard at station)
This is the scoreboard, which gives you information abou the status of the machine. The blue number is the current for electrons (top number) and the red number is the current for positrons (bottom number). The number in the middle is the run time clock indicating the time remaining until we refill electrons. Below that is a countdown timer showing when we will next top-off positrons. (Can give more details about specific CESR run conditions, e.g., run lengths, starting current, data collection during refills).
The blocks on this display each represent 2 hours of time, starting at midnight. The data to the right of the screen is data from yesterday. The red line represents positron current, the blue is electron current, and the green line is beam lifetime.
- CHESS Dump Button (stand inside hutch)
In the unlikely event that you are trapped inside a hutch, hit a CHESS DUMP button to disable (close) the X-ray shutters and line beam stops, which will prevent x-rays from getting into this room.
- Hutch Search Circuit and Shutter Operation (Stand by search circuit in hutch)
In order to allow x-rays into the experimental hutch you must follow the following procedure: (show the user each step)
- First, you must search the hutch to make sure it is unoccupied. This means looking around corners and behind large equipment, and announcing your intent to search and secure the hutch.
- When you are satisfied that no one is in the hutch, press the Search Circuit button. A red light will flash and an alarm will beep – these will continue for about 60 seconds.
- Close and secure the hutch door, and turn and remove the key mounted on the outside of the door. You must complete this step before the flashing light and beeping noise stop.
- The hutch door key(s) are then inserted into the Station Control Panel and turned, which activates the "Open Shutter" buttons. All stations have two keys, which must be inserted into the control panel to open the shutters-- one from the hutch door, and one that is generally left in the control panel.
- If all of the red LED lights on the Station Control Panel are lit, the shutters will open when both "Open Shutter" buttons are pressed.
- If for any reason some part of this safety protocol was performed incorrectly, or there is a problem in any part of the safety interlock system, the "Open Shutter" buttons will not be enabled. See the CHESS Operator if you encounter difficulties.
- Station Phones (Stand next to station phone)
Each station has its own phone with a unique phone number. Take note of the number for your station and ask anyone calling you to call the station number not the general CHESS number. You can call outside by dialing 9 then the number.
Please contact the CHESS operator if you have any questions and especially if you are having a problem with your experiment. We have on-call support 24 hrs a day. I would also like to remind you that you must check out in person with the CHESS operator after finishing your experiment.
Rev. 1 – Initial document (5/18/12 KM)
Rev. 2 – Added F1 eyewash and safety information regarding appropriate footwear (6/15/12 KM)
Rev. 3 – Edited step 21 Emergencies
. Added information about new yellow call boxes.
Edited step 19 – where to meet during a fire alarm
Added header and page numbers (1/7/13 KM)
Rev. 4 – Removed step 24 – Radiation Monitors
. (2/25/13 KM).
Rev. 5 – Edited information about computer room for the new location on the 3rd floor. Added info about topoff mode in step 11. Added info about -80 freezer in step 17. Added SAXS sample prep area in step 23. (10/15/13 KM)
Rev. 6 - Modified step 5 - Computer Room. Not necessary to take all users to the third floor computer room unless they request it. Edited step 23c - There is no longer yellow and purple tape on the floor marking the controlled areas. Changed to remind users to get their badges from CHESS Ops and wear them while working in G-line (KM 5/17/14)
Rev. 7 – Edited stockroom location. Edited step 26 – removed part about long distance calling code. Edited step 11 – removed details about what current CESR normally runs at and details about topoff. (KM 2/4/15)
Rev. 8 – Added step 2, regarding new path to East area by LN2 area. Added more details about the status page. (KM 9/25/15)
Rev. 9 – Added to step 15 – radiation shielding only guaranteed up to eight feet (KM 11/30/15)
Rev. 10 – Added information about HF work in chem room. Added instructions on how to demonstrate LN2 filling station use. Added some other details in various steps for clarification. (KMM 11/3/16)
Rev. 11 – Edited the step about explaining the CESR scoreboard to reflect recent changes in operator announcements and simplified some explanations. Moved the step towards to end of the tour so it can be done at the scoreboard next to the station where the users are working. (1/25/17 KMM)
- 29 Aug 2017