Status: PROCESSED
Transcript of Status: PROCESSED
Person: Ghoshal, Probir ([email protected]) Org: PMAGNT
Status: PROCESSED Saved: 11/18/2019 11:24:55 PM
Submitted: 11/18/2019 11:24:55 PM
Operational Safety Procedure Review and Approval Form # 95104(See ES&H Manual Chapter 3310 Appendix T1 Operational Safety Procedure (OSP) andTemporary OSP Procedure for Instructions)
Type: OSP
Click for OSP/TOSP Procedure FormClick for LOSP Procedure FormClick for LTT-Individual InformationClick for LTT-Group Information
Serial Number: ENP-19-95104-OSP
Issue Date: 11/20/2019
Expiration Date: 10/20/2020
Title: HDIce Dump Solenoid – Operating Magnet to Full Field
Location: (where work is beingperformed)
Building Floor Plans
58 - Test Lab - 1127Location Detail: (specifics about where in the selected location(s) the work is beingperformed)
Risk Classification: (See ES&H Manual Chapter 3210 Appendix T3 Risk Code Assignment)
Without mitigation measures (3 or 4): 3
With mitigation measures in place (N, 1, or 2): 1
Reason: This document is written to mitigate hazard issues that are : Determined to have an unmitigated Risk code of 3 or 4
Owning Organization: PHALLB
Document Owner(s): Ghoshal, Probir ([email protected]) Primary
Supplemental Technical Validations
Mode 1: Class 1, 2, and 3 Electrical Equipment (Bill Rainey, Tim Fitzgerald) Static Magnetic Fields >5G: Fringe, High, & Quench Effect (Imani Burton, Jennifer Williams) ESH&Q Liasion (Bert Manzlak)
Other Hazards: Magnet Heating (James Coleman)
Document History
Revision Reason for revision or update Serial number of superseded document
Lessons Learned Lessons Learned relating to the hazard issues noted above have beenreviewed.
Comments forreviewers/approvers:
Attachments
Procedure: HDIce Dump Solenoid_OSP_11182019.pdf THA: HDIce Dump Solenoid_THA.pdf
Additional Files:
Review Signatures
Person : Subject Matter Expert : Magnet Heating Signed on 11/19/2019 9:59:42 AM by JamesColeman ([email protected])
Subject Matter Expert : Electricity->Mode 1: Class 1->2-> and 3 Electrical Equipment
Signed on 11/19/2019 7:19:47 AM by TimFitzgerald ([email protected])
Subject Matter Expert : Static Magnetic Fields >5G:Fringe-> High-> & Quench Effect
Signed on 11/19/2019 10:48:47 AM by ImaniBurton ([email protected])
Approval Signatures
Division Safety Officer : PHALLB Signed on 11/19/2019 11:56:14 AM by Ed Folts ([email protected]) ESH&Q Division Liasion :PHALLB Signed on 11/19/2019 11:39:15 AM by Bert Manzlak ([email protected])
Org Manager : PHALLB Signed on 11/20/2019 3:28:43 PM by Patrizia Rossi ([email protected])
Safety Warden : Test Lab - 1127 Signed on 11/19/2019 12:35:59 PM by Matthew Poelker([email protected])
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
Page
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fa
Operational Safety Procedure Form (See ES&H Manual Chapter 3310 Appendix T1
Operational Safety Procedure (OSP) and Temporary OSP
Procedure for instructions.)
Title: HDIce Dump Solenoid – Operating Magnet to Full Field
Location:
UITF Enclosure (Cave 2) Type:
OSP
TOSP
Risk Classification
(per Task Hazard Analysis attached)
(See ESH&Q Manual Chapter 3210 Appendix T3 Risk Code Assignment.)
Highest Risk Code Before
Mitigation 3
Highest Risk Code after
Mitigation (N, 1, or 2): 1
Owning Organization: Magnet Group Date: November 18, 2019
Document Owner(s): Probir Ghoshal
DEFINE THE SCOPE OF WORK
1. Purpose of the Procedure – Describe in detail the reason for the procedure (what is being done and why).
This OSP is to be used to power the HDIce Dump Solenoid within the UITF enclosure. This magnet has
an expected maximum operational current of 350 Amps (normal expected operating current is 318.2 A).
This will be the permanent location for the magnet up on its stand on the beam line. Normal operation
will be to remotely operate the magnet (i.e. from the control room) but there may be instances when the
magnet will have to operated (for temporary testing purposes) with staff still inside the UITF enclosure.
For such instances, temporary tape barriers will be erected at the 5 Gauss line together with warning
signage and flashing beacons.
2. Scope – include all operations, people, and/or areas that the procedure will affect.
This OSP identifies and specifies mitigation measures for all aspects of significant hazards associated
with the HDIce dump solenoid.
This OSP does not cover maintenance or internal adjustment of the power supply or access to LCW and
electrical leads on top of the magnet in the UITF enclosure.
3. Description of the Facility – include building, floor plans and layout of the experiment or operation.
The UITF Enclosure (Cave 2) is located at the East side of area 1127 of the Building 58 High Bay – far
left of Figure 1 below.
Click
For
X
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Figure 1 – The UITF Enclosure showing the location of the HD-Ice experiment and the PSU connected to
the solenoid at the top of the picture. The solenoid can be seen on the top of its stand.
ANALYZE THE HAZARDS and IMPLEMENT CONTROLS
4. Hazards identified on written Task Hazard Analysis
The solenoid magnet is located in the UITF Enclosure. When powered at 350 A, (i.e. approx. 10% above
expected operating current), the solenoid will produce a 0.275 Tesla (2750 Gauss) field at its bore center.
The 5 Gauss line will be located at a distance of 1.68 m from the center of the solenoid as measured along
the bore (Z-axis) and at 1.3 m from the center of the bore measured in either the X or Y-axes. The hazards
related to solenoid operation include the following:
1. Electrical hazard
2. Magnetic field
3. Magnet Heating
5. Authority and Responsibility:
5.1 Who has authority to implement/terminate
Matt Poelker and Probir Ghoshal
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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5.2 Who is responsible for key tasks
Probir Ghoshal
5.3 Who analyzes the special or unusual hazards including elevated work, chemicals, gases, fire or sparks (See ES&H
Manual Chapter 3210 Appendix T1 Work Planning, Control, and Authorization Procedure)
Jim Coleman (magnet power supply and coil heating) and Jennifer Williams (magnetic fields) 5.4 What are the Training Requirements (See http://www.jlab.org/div_dept/train/poc.pdf)
SAF603 Electrical Hazard Awareness
SAF104 Lock, Tag and Try
This OSP
6. Personal and Environmental Hazard Controls Including:
6.1 Shielding
N/A
6.2 Barriers (magnetic, hearing, elevated or crane work, etc.)
Temporary rope or tape barriers, flashing beacons and signage for magnetic fields
6.3 Interlocks
To be able to turn on the magnet power supply, these interlocks must be green:
1. Magnet LCW Flow (>2.00 GPM)
2. Magnet temperature (<60°C)
3. Power Supply LCW Flow (>1.25 GPM) – nominal flow is 2.2 GPM
4. Power Supply Voltage (<79 V)
6.4 Monitoring systems
All magnet-related instrumentation is monitored by a PLC and can be viewed via an EPICS GUI. 6.5 Ventilation
N/A 6.6 Other (Electrical, ODH, Trip, Ladder) (Attach related Temporary Work Permits or Safety Reviews as appropriate.)
N/A
7. List of Safety Equipment:
7.1 List of Safety Equipment:
The magnet power supply has its own ground. The copper-braid shield on the power supply to
magnet leads is grounded to this same point. The cradle (that the magnet sits on) and the solenoid
mandrel is also grounded to this same point. 7.2 Special Tools:
N/A
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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8. Associated Administrative Controls
N/A
DEVELOP THE PROCEDURE
9. Operating Guidelines
The HDIce Dump Solenoid produces a magnetic field of about 0.25 Tesla at its normal expected
operating current of 318.2 A and operational voltage of about 47 V (as measured at the solenoid
terminals). The power associated with this operating condition is approximately 15 kW. The magnet is
wound using square copper conductor with a central water-cooling hole and consists of four 2-layer coils
connected in series and weighs approximately 400 pounds. Figure 2 indicates the final location of the
magnet on its stand on the beam line.
Figure 2 - HDIce Dump Solenoid positioned on its stand within the UITF enclosure
Hazards
The hazards related to solenoid operation include the following:
1. Electrical hazard
2. Magnetic field
3. Magnet Heating
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Mitigation
Electrical Hazard
The solenoid magnet power supply (shown in Figure 3) in located within the UITF Enclosure in close
proximity to the solenoid and operates with an input voltage of 480 VAC. The wall feed and associated
breaker is located outside of the UITF Enclosure, to the right of the entrance gate (Figure 8). The power
supply output over voltage trip level is set to 79 V. Maintenance and servicing of the power supply can
only be conducted by “Qualified Electrical Workers". The supply is cooled with LCW. The LCW flow is
interlocked to the power supply.
During normal operation, connections at the power supply are made inside the cabinet which has
interlocked doors. Insulated and copper braid-shielded cables carrying current to the magnet exit from the
top of the power supply cabinet and are routed to the solenoid terminals via uni-struts supported off the
wall. The electrically "live" portions of the leads at the water inlet/outlet and current in/out are insulated
with a double-layer of half-lapped Kapton tape and a half-lapped layer of self-vulcanizing electrical tape -
all electrical (power) connections are enclosed within a Lexan box. The conductor used to wind the
solenoid is insulated with Dacron glass insulation. The rest of the magnet is insulated with Nomex paper
and fiberglass tape. At the end of construction the magnet went through a vacuum impregnation. The
completed magnet has been high potted at 1150 V and has a resistance to ground of 370 MΩ.
There is one Emergency Stop button located on the power supply front panel.
Figure 3: Magnet power supply within the UITF Enclosure. There is an Emergency Stop (E-Stop) button
on the front panel.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Magnetic Field
The solenoid magnet is located within the UITF Enclosure. When powered at 350 A, (i.e. 10% above
expected operating current), the solenoid will produce a 0.275 Tesla (2750 Gauss) field at its bore center.
The 5 Gauss line will be located at a distance of 1.68 m from the center of the solenoid as measured along
the bore (Z-axis) and at 1.3 m from the center of the bore measured in either the X or Y axes. The 5 Gauss
line is used as the limit to restrict access to personnel with surgical implants or bioelectric devices. The 5
Gauss line is indicated via the use of temporary rope or tape barriers. A flashing red beacon will indicate
when the magnet is ON.
Figure 4 – Stray field map of the HDIce Dump Solenoid at 350 A (0.275 T central field).
Note that the stray field will have the same extent in the X-axis as it does in the Y-axis.
Field contour values are in Tesla (1 Tesla = 10000 Gauss). Distance values are in mm.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
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Strong magnetic fields can attract loose ferromagnetic objects, possibly injuring body parts or striking
fragile components. Prior to energizing the magnet, a sweep of the cordoned-off 5 Gauss area
will be performed for any loose magnetic objects. All personnel entering the 5 Gauss area will be also
trained to remove ferromagnetic objects from themselves including wallets and watches.
A Gate Interlock will prevent access to the magnet when it is energized. However, there will be a Gate
Interlock Bypass Key to be able to enter the UITF Enclosure with the magnet ON. When the gate
interlock is bypassed, a flashing red beacon installed at the 5 Gauss line will warn personnel with surgical
implants and bioelectric devices from entering the 5 Gauss boundary.
Magnet Heating
At 318.2 A, the total power dissipated in the magnet is about 15 kW. Low Conductivity Water (LCW) is
used to cool the magnet with a flow rate of about 4 GPM. The parameters that are monitored and
interlocked are summarized in the table below.
Table I – Monitored Parameters and Interlock Thresholds
The temperature of the magnet is interlocked to the power supply using 4 Klixon 70°C Thermal Switches
mounted on each of the 4 return conductors. These switches are normally closed and open when the
temperature exceeds 70°C (158 F) and automatically reset when the temperature drops below 44.4°C (112
F). With the magnet at 318.2 A, the hottest temperature expected is about 50°C with a 4 GPM LCW flow
rate.
A FSD (Fast Shut Down) signal from the PLC/Power Supply has been provided to allow the beam to be
shut down if the solenoid power supply shuts down.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Figure 5 - HDIce Dump Solenoid water manifold with supply and return headers and terminal blocks
mounted on a DIN rail for instrumentation
All interlocks must be green to be able to turn the supply ON.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Figure 6 – EPICS interlock screen for the solenoid
Figure 7 shows the power supply control screen.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Figure 7 – HDIce Dump Solenoid power supply control screen.
PPE Requirement to Turn Power Supply Breaker ON/OFF
As the solenoid power supply is turned ON and OFF via a circuit breaker which is located outside the
UITF enclosure – see figure below – no PPE is required to operate this breaker. However, to apply LOTO
to the ON/OFF switch on the power supply’s front panel and to work inside the power supply, the PPE
required is: safety glasses and a long-sleeved shirt. Also use the Voltage Verification Unit (VVU) on the
power supply front panel.
Figure 8 – Location of main breaker and cable-disconnect outside the UITF Enclosure for the solenoid magnet
power supply
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Responsible Personnel
The individuals responsible for the operation of the solenoid will be trained and listed here.
Andy Sandorfi [email protected] 5457
Xiangdong Wei [email protected] 5266
Charles Hanretty [email protected] 5023
Kevin Banks [email protected] 7418
Probir Ghoshal [email protected] 6702
David Kashy [email protected] 7275
Nicholas Sandoval [email protected] 6645
Ruben Fair [email protected] 6113
10. Notification of Affected Personnel (who, how, and when include building manager, safety warden, and area coordinator)
11. List the Steps Required to Execute the Procedure: from start to finish.
Reference should be made to Document No. B000000400-P010 – Hall B HDIce Dump Solenoid Power
Up and Power Down Procedure for full details on how to operate the magnet. A summary of the key
steps is provided here and reference should be made to Figures 6 and 7 within this OSP. (Note: SME =
Subject Matter Expert)
Instruction Action
CHECKS AND INITIAL SETTINGS ON THE MPS CONTROL SCREEN BEFORE ENERGIZING MAGNET 1 Set the Current Setpoint to 0 (zero) A. [This is
to avoid any unintentional current ramps before all checks have been completed].
Type ‘0’ (i.e. zero) in the field and hit the Enter key on the keyboard.
If the control screen does not allow you to do this, call the SME
2 Check that all the indicator LEDs are green. If any are RED, click the ‘Faults’ Reset button
If the faults cannot be cleared, call the SME
3 Check that all interlock indicator LEDs are green
If any are RED, click the Interlocks Reset button
If the interlocks cannot be cleared, call the SME
4 Turn ON the Magnet Power Supply Click the ‘Contactor’ ON button to turn the power supply on
ENERGIZING (POWERING UP) THE MAGNET 5 Type in the required magnet current in the Current Setpoint field hit Enter on the keyboard to start the ramp
up. The magnet current will increase to the required set point at a rate of 5 A/s.
6 If there are any trips, one of more of the Interlock LED indicators will turn RED and the magnet will run down to zero current at a rate of 10 A/s. If this happens call the SME.
Instruction Action DE-ENERGIZING (POWERING DOWN) THE MAGNET 1 Type in the required magnet current in the Current Setpoint field and hit Enter on the keyboard to start the
ramp down. The magnet current will decrease to the required set point at a rate of 5 A/s.
2 If there are any trips, one of more of the Interlock LED indicators will turn RED and the magnet will run down to zero current at a rate of 10 A/s. If this happens call the SME.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
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Reversing Polarity
Reversing polarity can be achieved by swapping the POSITIVE and NEGATIVE lead connections at the
power supply end, and not at the solenoid end as the connections there are all insulated.
Once all the interlock checks have been completed, the magnet can be energized as usual via the power
supply EPICS control screen.
12. Back Out Procedure(s) i.e. steps necessary to restore the equipment/area to a safe level.
Set the magnet current to zero and turn off the power supply.
13. Special environmental control requirements:
13.1 List materials, chemicals, gasses that could impact the environment (ensure these are considered when choosing
Subject Mater Experts) and explore EMP-04 Project/Activity/Experiment Environmental Review below
None
13.2 Environmental impacts (See EMP-04 Project/Activity/Experiment Environmental Review)
None
13.3 Abatement steps (secondary containment or special packaging requirements)
None
14. Unusual/Emergency Procedures (e.g., loss of power, spills, fire, etc.)
N/A
15. Instrument Calibration Requirements (e.g., safety system/device recertification, RF probe calibration)
N/A
16. Inspection Schedules
17. References/Associated/Relevant Documentation
18. List of Records Generated (Include Location / Review and Approved procedure)
Distribution: Copies to Affected Area, Authors, Division Safety Officer
Expiration: Forward to ESH&Q Document Control
Form Revision Summary Revision 1.4 – 06/20/16 – Repositioned “Scope of Work” to clarify processes
Qualifying Periodic Review – 02/19/14 – No substantive changes required
Revision 1.3 – 11/27/13 – Added “Owning Organization” to more accurately reflect laboratory operations.
Operational Safety Procedure Form
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
Page
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Revision 1.2 – 09/15/12 – Update form to conform to electronic review.
Revision 1.1 – 04/03/12 – Risk Code 0 switched to N to be consistent with 3210 T3 Risk Code Assignment.
Revision 1.0 – 12/01/11 – Added reasoning for OSP to aid in appropriate review determination.
Revision 0.0 – 10/05/09 – Updated to reflect current laboratory operations
ISSUING AUTHORITY FORM TECHNICAL POINT-OF-CONTACT APPROVAL DATE REVIEW DATE REV.
ESH&Q Division Harry Fanning 06/20/16 06/20/19 1.4
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the
document is the same revision as the current on line file. This copy was printed on 11/18/2019.
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the document is the same revision as the
current on line file. This copy was printed on 11/11/2019.
Page
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Task Hazard Analysis (THA) Worksheet (See ES&H Manual Chapter 3210 Appendix T1
Work Planning, Control, and Authorization Procedure)
Author: Ruben Fair Date: November 11, 2019 Task #: If applicable
Complete all information. Use as many sheets as necessary
Task Title: HDIce Dump Solenoid Task Location: UITF Enclosure (Cave 2)
Division: ENP Department: Magnet Group Frequency of use: Daily
Lead Worker: Probir Ghoshal
Mitigation already in place: Standard Protecting Measures Work Control Documents
See OSP, “HDIce Dump Solenoid”
Sequence
of Task
Steps Task Steps/Potential Hazards Consequence
Level
Probability
Level
Risk
Code
(before
mitigation)
Proposed Mitigation (Required for Risk Code >2)
Safety Procedures/
Practices/Controls/Training
Risk
Code (after
mitigation
1 Electrical Hazard M M 3
All electrical leads covered.
Temporary rope or tape
barriers, flashing beacons and
signage for magnetic fields
Read and Adhere to this OSP Training:
SAF603 Electrical Hazard Awareness
SAF104 Lock, Tag and Try
1
2 Magnetic Field Hazard L H 3
Interlocked door Postings:
Signs, Strobe lights, flashing
red beacons 5 Gauss barrier
markings
Read and Adhere to
This OSP
ESH Manual Chapter 6420
1
3 Magnet Heating L M 2 LCW cooling, Thermal switch
Interlocks Read and Adhere to this OSP 1
Highest Risk Code before Mitigation: 3 Highest Risk Code after Mitigation: 1
Click
For Word Doc
Task Hazard Analysis (THA) Worksheet (See ES&H Manual Chapter 3210 Appendix T1
Work Planning, Control, and Authorization Procedure)
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the document is the same revision as the
current on line file. This copy was printed on 11/11/2019.
Page
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When completed, if the analysis indicates that the Risk Code before mitigation for any steps is “medium” or higher (RC≥3), then a formal Work Control Document (WCD) is developed for
the task. Attach this completed Task Hazard Analysis Worksheet. Have the package reviewed and approved prior to beginning work. (See ES&H Manual Chapter 3310 Operational
Safety Procedure Program.)
Task Hazard Analysis (THA) Worksheet (See ES&H Manual Chapter 3210 Appendix T1
Work Planning, Control, and Authorization Procedure)
For questions or comments regarding this form contact the Technical Point-of-Contact Harry Fanning
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the document is the same revision as the
current on line file. This copy was printed on 11/11/2019.
Page
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Form Revision Summary Periodic Review – 08/29/18 – No changes per TPOC
Periodic Review – 08/13/15 – No changes per TPOC
Revision 0.1 – 06/19/12 - Triennial Review. Update to format.
Revision 0.0 – 10/05/09 – Written to document current laboratory operational procedure.
ISSUING AUTHORITY TECHNICAL POINT-OF-CONTACT APPROVAL DATE REVIEW DATE REV.
ESH&Q Division Harry Fanning 08/29/18 08/29/21 0.1
This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that
the document is the same revision as the current on line file. This copy was printed on 11/11/2019.
By signing this page, you testify that you have read, understand, and agree to abide by the procedurespecified in the above referenced work control document:
Serial Number: ENP-19-95104-OSPTitle: HDIce Dump Solenoid – Operating Magnet to Full Field
Name Signature Date