# Presentation: 294014

## FEEPS Reset Instructions

## Background

- FEEPS Function:  to protect the Front End
- Implication for Users:  cannot take beam while FEEPS is tripped
- Purpose of Instructions
- Define conditions required for reset
- Explain the reset process

**Notes:**
FEEPS Function:  The Front End Equipment Protection System (FEEPS) monitors the state of variables relevant to the protection of Front End equipment.  When the FEEPS detects that a variable is not in the correct state, a fault occurs, and the Front End shutter permit is removed. 
	The Front End Valve (FEV) and Beamline Isolation Valve (BIV) may also close, preventing any vacuum breach from propagating upstream.

Implication for users: The Front End shutter cannot be opened

## Scope

- Conditions for reset by FC or Operator
- The fault did not cause a beam dump
- AND
- The fault was caused by user vacuum
- OR
- The fault was caused by a FE vacuum fault downstream of PS1

**Notes:**
Floor Coordinators and Operators are allowed to reset FEEPS faults under certain conditions:

## How will you be notified when there is a FEEPS fault?

- A user will call 2-0101.
- We had a vacuum trip.
- Can you open our FEV?
- Our BIV is closed.
- I can’t open my shutter.

## Step 1:  Gather Information

- If the user hasn’t already told you, ask if he/she knows what caused the fault.
- Often, the user mentions beamline vacuum work or suspected outgassing.

## Step 2:  User BLEPS Reset

- Ask the user to reset the Beamline EPS (BLEPS).
- Often necessary before FEEPS will reset.
- User may need to call beamline contact for assistance.

**Notes:**
Ask the user to reset the Beamline EPS (BLEPS).  
	In many cases, the FEEPS cannot be reset if the BLEPS has not been reset.  
	Visiting users may need to call their beamline contact for assistance.  Floor Coordinators and Operators are not authorized to reset the BLEPS.

## Step 3:  Window?

- Determine whether the beamline has a commissioning/ beryllium window.

- _Figure 1_:  Path to FEEPS screen.
- The commissioning window is circled
- in blue.

**Notes:**
Determine whether the beamline has a commissioning/beryllium window.
If the beamline has a commissioning window or beryllium window, it is shown in the beam path (circled in blue).  Otherwise, the beamline is windowless.  Note that 1-ID has a commissioning window, labeled “COM Win.”  Some beamlines have a beryllium window instead, labeled “Be Win.”

## For beamlines with a commissioning or beryllium window...

**Notes:**
Now that you have determined whether the beamline has a commissioning/beryllium window or is windowless, the course of action varies.
For beamlines that do have either a commissioning or beryllium window...

## Steps 4, 5, 6:  Reset

- The FC or Operator may attempt to reset the FEEPS.
- Open controls
- Click “Reset”
- Open FEV/BIV

- _Figure 2_:  Path for resetting
- FEEPS

**Notes:**
The Floor Coordinator or Operator may attempt to reset the FEEPS.  
Following the path shown in Figure 2, access the Beamline-Specific EPS_Controls screen. 
Upon accessing the EPS_Controls screen, click the “Reset” button (circled in red).  
Once the fault has been reset, click the FEV and BIV “Open” buttons.
	Note that for 21-ID, the status of the FEV and BIV are not shown.  This is because the beamline is too new.  Normally, if the FEEPS is tripped, the indicators would show the valves as being closed.

## Step 7: Screen Specifics

**Notes:**
Details to note:
When there is a FEEPS fault, the FEEPS screen shows a red, blinking box next to the “Fault Reset” button.  The EPS_Controls screen also shows a red blinking box above the “Reset” button (both are circled in red).
The legend on the left side of the EPS_Controls screen shows that there is no FE permit and that PS1 and PS2 are closed, but the Beamline EPS (BLEPS) shutter permit is being given (circled in blue).  As I mentioned earlier, for most beamlines the BLEPS must be reset before the FEEPS can be reset.
The EPS_Controls screen also shows the open or closed status of PS1, Slow Valve, Fast Valve, FEV, and BIV (circled in yellow).  Because 21-ID is a new beamline, status is not shown for the FEV and BIV.  

## For windowless beamlines...

**Notes:**
So, what if the beamline does not have either a commissioning or beryllium window?

## Step 8: Check Ion Pumps

- All but one ion pump should be in the 10-9 range or less.

**Notes:**
If the beamline is windowless, more checks are needed to ensure that any beamline vacuum problems are not propagated upstream.  
	Using the Beamline-Specific FEEPS screen (Figure 3), check to see that the pressure on all but one of the ion pumps is in the 10-9 range or less (circled in yellow).  
For most beamlines, one ion pump reads in the 10-7 range due to outgassing if PS1 is open but PS2 been closed for several minutes.  A yellow dot indicates that the pressure is in this range.  The actual ion pump varies depending on the exact front end configuration.  As long as only one ion pump is reading between the 10-7 and the 10-9 ranges, the FE vacuum is considered to be acceptable for the purposes of this procedure.

## Step 8 (continued)

- Differences between BM and ID
- 	beamlines:  9 ion pumps vs. 7

- 9-BM

- 9-ID

**Notes:**
The image on the left is “Figure 3” from the instruction sheet.  It shows FEEPS screens for 9-BM and 9-ID.  Ion pumps are circled in blue. Blanks have been provided where the ion pump values can be entered prior to resetting the FEEPS.

The image on the right shows a close-up of ion pump readings for 9-BM and 9-ID.  Note that when resetting the FEEPS for 9-BM, it would be necessary to check 9 ion pumps, as opposed to 9-ID, which only has 7 ion pumps to be checked.  

## 	Step 9:  RGA

- Check beamline RGA
- Pressure range 10-9 or less

- Beamline RGA:_____

**Notes:**
In addition to checking the ion pumps, check the Beamline RGA (Figure 4 on instruction sheet).  The pressure should be in the range of 10-9  or less (circled in blue). 
	On the instruction sheet, a blank has been provided where the beamline RGA value can be entered. 

## Step 10:  Reset

- If pressure conditions in steps 8 and 9 are satisfied, reset the fault and open the FEV and BIV.
- Steps 4-7
- If not, contact the Vacuum Group on-call engineer.

**Notes:**
If pressure conditions in steps 8 and 9 are satisfied, follow steps 4 through 7 to reset the fault and open the FEV and BIV.
	Note that in this example, PS1 and the SV are closed too.  That is because I got this picture during the shutdown.  Normally, PS1 and the SV would not be closed.
If any of the pressure readings in steps 8 and 9 are not within the prescribed range, do not attempt to reset the FEEPS or open any valves.  Contact the Vacuum Group on-call engineer. 

## For all beamlines...

## Step 11: In case of difficulty

- If a FEEPS fault does not reset or occurs more than 3 times per shift, contact the vacuum on-call engineer.
- File an RMD report.
- If call-ins are necessary, notify the on-call Floor Coordinator.
- When in doubt, the Operator is always welcome to call the on-call Floor Coordinator for assistance in troubleshooting.

**Notes:**
If the fault does not reset or occurs more than 3 times per shift, contact the vacuum on-call engineer.  He/She can provide advice as to whether the fault can continue to be reset or whether call-ins are necessary.
File an RMD report even if you continue to reset the fault; follow-up by AES Division personnel during business hours may be required.
If call-ins are necessary, notify the on-call Floor Coordinator.  A CCWP may be required, depending on the equipment involved.

## Step 12:  Manual Reset

- When EPICS is not working
- Computer communications problem
- Beamline is too new

- ES102

**Notes:**
Occasionally, it will not be possible to reset the FEEPS via EPICS due to computer communication problems.  It may still be possible to reset the FEEPS from the associated chassis on the storage ring mezzanine.  After performing the vacuum checks outlined in steps 8-10 (if required):
Find the cabinet on the storage ring mezzanine associated with the beamline which needs the FEEPS reset.
Use key ES102 to open the FEEPS cabinet.
Press the “Reset” button (circled in blue).
Open the FEV and BIV (circled in yellow).

## Step 13: Documentation

- Document the occurrence in the shift log.
- Time
- Beamline
- Vacuum readings that were checked for windowless beamlines (ion pumps, RGA)
- Whether the fault reset without difficulty or required further action

## Other Information

- Occasional User Requests:
- Close the FEV or BIV manually in preparation for beamline vacuum work
- Open the FEV or BIV after vacuum work, when there is no FEEPS trip
- Floor Coordinators and Operators are permitted to grant such requests.

**Notes:**
Most beamlines do not have control of these valves.

## No FEEPS Fault?

- _Legend_
- ACIS:  Global online, shutter status
- ID:  Gap in mm
- Front End:  EPS, MPS, DIW, VAC
- Positions:  SV, FEV, BIV, PS1
- Beamline:  VAC, PER
- APS Enable:  A, B, C, D, E (stations)
- PSS Fault

- _2-BM:_  Typical FEEPS fault; also a PSS
- fault.
- _8-BM, 9-BM_:  BLEPS fault only.

**Notes:**
Occasionally, a user suspects that there has been a FEEPS fault, but the problem is actually the BLEPS or a PSS Fault.  The Beamline Status screen can be helpful in troubleshooting.
The screen shows:
ACIS:  Global online, shutter status
Front End Status including EPS, MPS, DIW, and VAC (headings in blue)
Positions of the SV, FEV, BIV, and PS1 (headings in purple)
Beamline Vacuum and BLEPS Permit (headings in green)
Which stations have APS Enable
Whether there is a PSS fault.
2-BM shows a pattern typical of a FEEPS trip in which the Front End EPS and VAC columns are red, and the FEV is closed.  If the beamline had a BIV, it would be closed too.  The “beamline PER” column shows that the BLEPS permit is not being given.  The user may need to reset the BLEPS before the FEEPS can be reset.
2-BM also has a PSS fault.
8-BM, 9-BM, and several other beamlines show a pattern typical of a BLEPS trip only.  “Beamline PER” is red, showing that the BLEPS permit is not being given.  Front End EPS is also red because FEEPS is not getting the permit from BLEPS.  But there is no FE VAC trip, and the FEV is open. 
In this case, the user should be informed that there has been no Front End vacuum trip and that the Beamline EPS needs to be reset.
Note that PSS Faults are also shown on this screen.  Occasionally a user thinks the problem is a FEEPS trip, but it is actually a PSS fault (e.g. a door fault).  The PSS fault would need to be reset before the user could take beam.