NLCTA Electromagnet Equipment Lockout Procedure

Transcription

1 Electromagnet Equipment Procedure Electromagnet Equipment Procedure 1 Purpose This Electromagnet Equipment Procedure provides protection from unexpected electrical hazards found within the Accelerator Enclosure. All beamline electrical hazards, excepting those guarded with protective covers, are included in this ELP. Execution of this ELP requires an to lock out the AC power sources for all of the power supplies supplying power to unprotected magnet terminals and conductors. Following the lockout, the keys for the power supplies are locked into the Lock-Out Box. This ELP contains: Instructions for Authorized Employees. Document information, including document approvals. Instructions for the who must apply and remove the lockout devices. Instructions for the for the periodic inspection of this procedure. Signature page for s authorized to apply this ELP. 2 Authorized Employee : Authorized Employees working within one foot of beamline components within the Accelerator Enclosure must lock out the electrical hazards from the magnet power supplies. Please refer to: Electromagnet Users Guide, June 18, R06 Page 1 of 8

2 Electromagnet Equipment Procedure 3 Document Information 3.1 Background This document is owned and authorized by the PPA/ARD/Test Facilities Department for control of beamline electromagnet electrical hazards posed by unguarded magnet terminals and leads. Revision 06 of this document incorporates and renders obsolete procedures and Document has been reviewed and approved by: PPA/ARD/TF Department Head Name Signature Date Operations Manager Name Signature Date PPA/ARD Safety Officer Name Signature Date 3.3 Initial Validation of Procedure Initial Validation is required prior to or upon the first use of this procedure. Validation is accomplished by following the protocol for the periodic inspection of this procedure. 3.4 Certification of Periodic Inspection of Procedure ELP procedures are valid for ONE YEAR following the most recent Initial Validation or Periodic Inspection. s are authorized to review this procedure using the instructions in Section 6 Periodic Inspection of Procedure. The dated signature below affirms that no deficiencies or need for correction were identified. June 18, R06 Page 2 of 8

3 Electromagnet Equipment Procedure 4 Steps for Controlling Hazardous Energy This ELP is designed to deenergize ALL power supplies connected to magnets in the Accelerator Enclosure except for those with permanently installed magnet lead covers. The magnets in the with appropriate lead covers are: BEND 1140, QUAD 4033, QUAD 4041 and QUAD To secure beam line electromagnet hazards, the Operator shall: 4.1 Apply 18 hazard lockout locks to the 10 locations listed below. Turn the circuit breaker OFF if required prior to applying lock. A red dedicated Hazard lock is tied to the rack near each control point. Each lock location is tagged with a hazard tag and sequence number. Apply or verify the application of the locks in numeric order starting with lockout station 1 at circuit breaker panel 4P501F2 and ending at lockout station number 10 at rack 24. 1: Breaker (9 locks) 4P501F2-9 4P501F2-21 4P501F2-27 4P501F2-33 4P501F2-39 4P501F2-45 4P501F2-34 4P501F2-40 4P501F2-46 2: Power Supply Breaker B : AC Power B : Rack Circuit Breaker B MCB1 5: Rack Circuit Breaker B MCB1 6: Rack Circuit Breaker B MCB1 7: 100 Amp AC Power B : 100 Amp AC Power B : 100 Amp AC Power B : 100 Amp AC Power B Place the key(s) for the hazard lockout locks into the Accelerator Enclosure Magnet Lock- Out Box. 4.3 Fill out a tag. Tag template is found at end of this document 4.4 Lock the box with a gold operations lock and the above tag. 4.5 Once the box is secured with the gold lock and tag, authorized workers may place their individual LOTO locks onto the lock box. 5 Steps to return to service 5.1 All individual LOTO must be removed from the LOTO box. 5.2 The gold operations lock shall be removed. 5.3 The Lock-Out Tag shall be voided (cross text out with a bold diagonal line). 5.4 The key(s) for the hazard lockout locks shall be removed from the lock box. Store these keys in the key safe when not in use. 5.5 Any red Hazard locks may be removed from power supplies. June 18, R06 Page 3 of 8

4 Electromagnet Equipment Procedure 6 Periodic Inspection of Procedure The intent of the validation and periodic inspection of this ELP is to verify that: All hazardous energy sources in the building are accounted for, and The energy sources connected to unprotected beamline magnets in the Accelerator Enclosure are properly deenergized by the execution of this ELP. Verification of the connections between power supplies and beamline magnets is complicated by the PPS Hazard Control system which disables or powers off almost all of the magnet power supplies prior to allowing personnel into the accelerator enclosure. The control of the power supplies through the PPS system DOES NOT satisfy either OSHA s or SLAC s requirements for the control of hazardous energy. The Periodic Inspection of Procedure (this section) specifically verifies that: All power supplies capable of energizing beamline magnets to create beamline hazards within the Accelerator Enclosure have been identified. Such power supplies are either a) not connected to beamline magnets, b) included in the power supply lockout program listed below, or c) connected to a magnet with appropriate magnet lead protective covers. Execution of the procedure removes the power from the power supplies listed below. The four Accelerator Enclosure magnets excluded from this procedure have appropriate magnet lead protective covers. All beamline magnets in the Experimental Hall have appropriate magnet lead protective covers. 6.1 Preparation Start with Accelerator Enclosure in NO ACCESS Remove any Hazard locks from circuit breakers. All power supplies should be indicating ON. It is not necessary to turn on power supplies or trim magnets through the control system. Check off each of the following items as it is completed. 6.2 point 1: The 9 circuit breakers power the following EMHP floor-mounted power supplies. Inspection consists of verifying PHASE A, B, C power supply lights are all lit prior to lockout and that all Verify EMHP 1 Verify EMHP 2 Verify EMHP 3 Verify EMHP 4 Verify EMHP 5 Verify EMHP 6 Verify EMHP 7 Verify EMHP 8 Verify EMHP point 2: A rack-mounted blue EMI supply at B Verify green POWER ON and green CONTROL FAILURE lights and voltmeters all 6.4 point 3: A rack-mounted AC POWER PANEL at B June 18, R06 Page 4 of 8

5 Electromagnet Equipment Procedure The Low Voltage Controller at level 31: Verify several LEDs lit prior to lockout and all LEDs 4 large blue EMI power supplies in rack 27: Verify green POWER ON and green 3 large blue EMI power supplies in rack 28: Verify green POWER ON and green 1 single-high blue EMI power supply in rack 28 at level 22. Verify power light and voltmeters 6.5 point 4: A rack-mounted AC POWER PANEL at B large blue EMI power supplies in rack 16: Verify green POWER ON and green 6.6 point 5: A rack-mounted AC POWER PANEL at B large blue EMI power supplies in rack 17: Verify green POWER ON and green 6.7 point 6: A rack-mounted POWER PANEL at B powers supplies. 4 large blue EMI power supplies in rack 18: Verify green POWER ON and green 6.8 point 7: A rack-mounted 100 AMP AC POWER PANEL at B The Low Voltage Controller at level 31: Verify several LEDs lit prior to lockout and all LEDs 2 large blue EMI power supplies in rack 19 at levels 07 and 12: Verify green POWER ON and green 6 large blue EMI power supplies in rack 20: Verify green POWER ON and green 6.9 point 8: A rack-mounted 100 AMP AC POWER PANEL at B The Low Voltage Controller at level 31: Verify several LEDs lit prior to lockout and all LEDs 6 large blue EMI power supplies in rack 21: Verify green POWER ON and green 2 large blue EMI power supplies in rack 22 at levels 01 and 06: Verify green POWER ON and green 6.10 point 9: A rack-mounted 100 AMP AC POWER PANEL at B The Low Voltage Controller at level 31: Verify several LEDs lit prior to lockout and all LEDs 3 large blue EMI power supplies in rack 22 at levels 13, 18 and 23: Verify green POWER ON and green CONTROL FAILURE lights and voltmeters all extinguish following lockout. 3 large blue EMI power supplies in rack 23 at levels 21, 26, 31 and 36: Verify green POWER ON and green CONTROL FAILURE lights and voltmeters all extinguish following lockout. June 18, R06 Page 5 of 8

6 Electromagnet Equipment Procedure 1 single-high blue EMI power supply in rack 23 at level 36. Verify power light and voltmeters 6.11 point 10: A rack-mounted 100 AMP AC POWER PANEL at B The Low Voltage Controller at 2431: Verify several LEDs lit prior to lockout and all LEDs 5 large blue EMI power supplies in rack 24: Verify green POWER ON and green 2 large blue EMI power supplies in rack 23 at levels 01 and 07: Verify green POWER ON and green 6.12 magnet lead verification: Inspect all covered magnets in Accelerator Enclosure. Leads must be appropriately covered. Verify BEND 1140 Verify QUAD 4033 Verify QUAD 4041 Verify QUAD Experimental hall magnet verification: Inspect all magnets in Experimental Hall. All magnets in experimental hall must have electrical connections for magnet leads appropriately covered Power supply verification: Inspect and Verify that the Electromagnet Users Guide document ( ) properly describes the application of equipment lockout devices for work within the Accelerator Enclosure Users guide review: Inspect all instrumentation racks in End Station B. All power supplies not included in the above verification procedure must be connected to loads which DO NOT power magnets in the Accelerator Enclosure Conclusion Upon completion of all of the above items: Sign and date this copy here: Sign section Initial Validation of Procedure or Certification of Periodic Inspection of Procedure, as appropriate, on the original Electromagnet Equipment Procedure document. Sign section Initial Validation of Procedure or Certification of Periodic Inspection of Procedure, as appropriate, on the original Electromagnet Users Guide document, File the checked-off copy of this procedure in the Control Room binder MONTHLY CHECKLISTS June 18, R06 Page 6 of 8

7 Electromagnet Equipment Procedure 7 Personnel authorized to use this procedure Any may lock out the following electrical hazards using this Electromagnet Equipment Procedure upon reading and signing this procedure. June 18, R06 Page 7 of 8

8 Printed Name Printed Name Printed Name Printed Name Printed Name Signature Signature Signature Signature Signature Date & Time Date & Time Date & Time Date & Time Date & Time Printed Name Printed Name Printed Name Printed Name Printed Name Signature Signature Signature Signature Signature Date & Time Date & Time Date & Time Date & Time Date & Time