A Comprehensive Electrical Equipment Review of

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A Comprehensive Electrical Equipment Review of
Experiment E-163 by The SLAC Electrical
Equipment Inspection Program
Lessons Learned Janice Nelson, Principle
Inspector and Wayne A. Linebarger, EEIP Program
Manager
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E-163 provided the Opportunity for the First
Comprehensive Electrical Equipment Review of a
new Experimental Facility
The EEIP would like to thank Eric R. Colby and
Robert H. Siemann of E-163 Laser Acceleration
at the NLCTA Their cooperation was essential
for the completion of this inspection.
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E163 will use electrons from the NLCTA through a
new extraction line into a new experimental hall
where they will accelerate the electrons with
novel laser-based techniques.
This required many changes to the NLCTA - new
RF gun - new laser room - new experimental
hall - and all the support equipment
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What we were faced with 4 Racks of small
chasses Several large systems - S-Band HVPS,
Modulator, and Klystron system - 4-Laser system
with PSs and diagnostics - Laser Safety System
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Motivation for a complete EEIP Inspection

• Required by the SLAC Electrical Safety Officer
• Recommended by the SLAC Electrical Safety
  Committee
• Numerous pieces of new and modified Electrical
  Equipment
• Required by the Electrical Equipment Inspection
  Program, Document SLAC-I-0A11A-001-R002

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Lessons Learned

• Policy Developments
• Combined Systems Inspections
• Self Certified Equipment CE
• Legacy Equipment
• Multicomponent systems
• Same report similar basic equipment
• Common Problems

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System Combined Inspections

• Problem
• Should we inspect multi-component systems, as a
  unit or as individual pieces. For example
  electronic crates loaded with listed and/or
  unlisted electronic equipment.
• Does the EEIP document or program provide the
  flexibility for these situations?

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System Combined Inspections

• The Electrical Equipment Inspection Program
  (EEIP) SLAC-I-730-OA11A-001-R002, Program
  Description Document
• Section 5 Examining and Approving Electrical
  Equipment, Installation, and Work allows for the
  equipment to be examined as a system.

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System Combined Inspections
Implementation

• The EEIP Inspector using his/her experience and
  judgment will determine if the equipment can be
  evaluated as a system.

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System Combined Inspections

• When conducting a System or Combined inspection,
  pay particular attention to the environment where
  the equipment is located.

• Use the checklists
• Ensure all connections are safe.
• Power Sources
• Single point failures
• Associated equipment

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• Sample Card Text
• Conditions for E-163 Modulator Operation
• 1. Maintenance of the E-163 Modulator and
  Klystron may only be performed by authorized and
  qualified CPE and KLY technical staff.
• 2. External inspection done 9/29/2005, EEIP
  Report 146.
• 3. Internal inspection required by EEIP
  representative before experimental running.

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• Self Certified Electrical Equipment

Acquiring unlisted equipment is discouraged by
the Electrical Equipment Inspection Program and
every effort should be made to purchase listed
and labeled equipment. SLACs Electrical
Equipment Inspection Program only approves
unlisted equipment after a rigorous inspection.
W
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Problem

• Equipment that is self certified could have the
  guarantee invalidated if the equipment receives
  the full EEIP inspection.
• Equipment calibration may be lost if equipment
  receives full inspection
• A method needed to be developed that will allow
  this type of equipment to be used here at SLAC in
  a safe environment.

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OSH Requires Electrical Equipment to be Inspected
by a NRTL Listed and Labeled
CE marked equipment is not listed equipment
and is Self Certified. As a result the
equipment is not acceptable for use at
SLAC. Example CE equipment includes
oscilloscopes, amplifiers, function generators, c
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Background DefinitionAuthority Having
Jurisdiction (AHJ) The organization, office, or
individual responsible for approving equipment,
materials, an installation or procedure. National
Electric Code (NEC), Article 100, Definitions
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Develop a policy and procedure that provides a
level of personal safety for self certified
electrical equipment. Restricted Use
Solution
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Conditions for Restricted Use ofSelf Certified
Commercial Equipment

• The EEIP Inspector using his/her experience and
  judgment will determine if the Restricted Use
  policy can be used for the equipment being
  evaluated.
• The Self Certified equipment must have a
  manufactures name and address on the equipment,
  as well as some type of identifying self
  certified label, for example a CE mark.
• The Equipment Owner is responsible for the
  equipment.

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Conditions for Restricted Use ofSelf Certified
Commercial Equipment

• A detailed inspection of all associated
  electronics, cable, and electrical equipment on
  or near the unlisted commercial equipment. All
  areas of concern must be free of all hazards.
• The EEIP Inspection must be documented by
  standard EEIP reports and checklists.

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Conditions for Restricted Use ofSelf Certified
Commercial Equipment

• All maintenance that needs to be performed on
  the equipment must be done by authorized factory
  trained field representatives and preferably in
  the manufactorys service facility.
• All non-maintenance work must be approved by the
  equipment owner or custodian.

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Legacy Equipment

• In this case for ease of checking equipment
  inspection completion, we chose to mark legacy
  equipment with a white sticker on the front with
  inspectors initials and date and the text Legacy
  Equipment.

J
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Multicomponent Systems/ Identical equipment

• In small modular systems, if a part was UL, we
  accepted the whole system as UL.
• Examples
• Multiple picomotor control cards in a chassis
• Wall-wart was UL listed and delivered low voltage
  to individual unmarked cards
• Multiple video control cards in a chassis
• Individual cards had UL sticker, chassis did not
• All patch panels got the same report sticker

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Common Problems

• Grounding of AC in connector
• Marking and labeling deficiencies (fuse rating,
  120 V in)
• Unexpected wire colors
• Butt splices on 120 V carrying wires
• n.b. No need to cover exposed 120 if lid is only
  removable by using a tool

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Summary Thoughts

• Took us a while to get up to speed with the
  report/checklist admin stuff. Had many
  suggestions for improvement after.
• Took gt2 days to do 35 reports worth of equipment
• First real big test of EEIP found
  above-mentioned deficiencies.
• Hopefully these new policies will help EEIP be
  more useful, easier to use, and make SLAC a safer
  place to work.

L