Transcript Cam Cable Demo

Cameron’s Cable Demo Procedure
• Purpose
• Pre-Planning
•Cable Removal Procedure
• Specific Safety Precautions Unique to all
cable demolition’s
• Cable Demolition Checklist
• Q/A
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Purpose:
•
This procedure is designed to eliminate cutting live electrical
cables that could result in a serious injury and/or property
damage. Before removing any cables, the following procedures
must be reviewed and followed by all craft persons. Note: This
procedure is written with the intent that the exposure to personnel
shall not exceed 600 VAC.
•
It is the intent that all cables be removed from the cable tray/rack
completely on the ground prior to cutting whenever possible. The
following procedure should be reviewed and followed along with a
completed Cable Demolition Checklist and maintained on the job
site along with the Permit and amended JSA.
•
The following steps should be followed to ensure the safety of all
employees involved in the work of removing the cable from the
cable tray.
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Pre-Planning:
•
•
•
Job Safety Analysis (JSA) A detailed JSA should be complete
prior to performing any work on this procedure and accompany a
valid Work Permit.
Isolation of the cable prior to beginning work (i.e. removing from
the cable tray/rack and have cable completely on the ground).
Personal Protective Equipment: (PPE) The following PPE shall
be worn where applicable when working with any cables 0-600
VAC OR 0-120VDC.
– Hard Hat - Complying with ANSI Z-89
– Safety Glasses - ANSI Z-87.1 safety glasses with
rigid side shields
– Face Shield - must be worn to prevent injury to the
face
– Gloves - Must be worn and must be rated at the
potential voltage or above
– Flash suit / Fire Retardant Clothing (FRC) or
equivalent
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Pre-Planning (continued):
•
Crew mix - the skill level and roles and responsibilities should be
outlined prior to beginning the work (i.e., preparer, cutter,
verifier/competent person, etc.)
•
Training - All craft persons involved with this procedure must be
trained prior to performing the work and training must be re-visited
when roles and responsibilities change.
•
Competent Person(s) - Must be capable of understanding all
aspects of the procedure, testing equipment, potential hazards of
the work, and has the authority of halting all aspects of the work
until he/she is certain it is safe to proceed. The competent person
shall have completed Electrical Safe Work Practices Training.
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Pre-Planning (continued):
•
Test equipment - The test equipment that will be utilized shall be in
conformance with the requirements set forth by the manufacturer or NEC,
with the appropriate certification papers with the equipment.
VOLTAGE LEVEL
FIELD SENSOR
(Tic Tracer)
0-24VDC
•
•
Hand-held
Voltmeter
Voltage Detector
(Med.- High Volts)
X
0-480VAC
X
X
480-600 Vac
X
X
Lock-out/Tag-out Procedure Follow established lock-out/Tag-out
procedures. Ensure testing is performed in accordance with company
policies (all required PPE, and safety procedures). Verify that the power
source is de-energized and locked properly. Using a voltage meter,
perform Phase-to-Ground and Phase-to-Phase measurements on all
conductors.
Positive Identification After each verification that cable is de-energized
(using the approved test equipment), personnel shall install I.D. ring type
identifier (white/gray PVC pipe) on one end of the cable only and proceed
to cut the ty-wraps as required to remove cable. Note: Both ends of cable
shall be disconnected before any demolition begins.
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Cable Removal Procedure:
•
Removing of the cable must be performed by a competent
person (crew size shall be a minimum of three persons). All cable
shall be physically removed from the cable tray/rack completely
on the ground prior to cutting.
– After the Lock-out/Tag-out procedure, testing, grounding, disconnection, and
identification has taken place, start the process of removal from the source
(switchgear, junction box, etc.) outward to the load/end device (i.e., motor,
pump, etc.) Never start in the middle, always start from one end and work to
the other end. Special precautions (including a “pause session”) and
verifications shall be taken when the cable(s) or conduit penetrate a building
wall, floor, beam, or different elevation. After the cable is prepared and ready to
be cut, a designated competent person must also verify the cable and cut
location prior to cutting each time. This person shall be designated as
accountable and make the cut of the cable. Note: Voltage shall be re-verified to
ensure cable is de-energized as needed to maintain a valid Work Permit and
JSA.
– The cable shall be removed out of the tray completely on the ground. No cut
shall be made unless the “I.D. sleeve” is within 12” of the cut point and verified
by both the craft person(s) and the designated competent person(s). The craft
person’s designated roles (i.e., preparing, cutting, verifying, etc.) will remain
consistent throughout the entire shift, unless an evaluation of the procedure,
JSA, and the roles and responsibilities are clearly understood by all affect craft
persons.
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Specific Safety Precautions Unique to
all cable demolition’s:
•
•
•
•
•
•
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Personnel verifying cable and cutting ty-wraps shall take all necessary precautions to
avoid damaging adjacent cable. In addition, every effort shall be made to collect tywrap pieces to prevent them from falling through grating.
All areas below the trays where demolition is ongoing shall be barricaded off with
caution/danger tape as applicable.
All “competent persons” shall assure themselves and other personnel that the cable
to be removed has been de-energized with voltage meter before proceeding with
cable removal.
All cables shall be tagged at the end of each work session (i.e. breaks, lunch, end of
work day) while demolition is in progress and have a numbered cable I.D. tag
affixed.
ID sleeve shall have Cable I.D. affixed. Use this as a cable tag during breaks, etc.
I.D. sleeve shall be within 12” of the cut point.
A ”pause session” shall be held with the Demolition Crew and Superintendent after
each break of more than 30 minutes. Note: Cable will also be re-verified with voltage
meter to ensure the cable is de-energized. ALL cables shall be disconnected on
both ends before demo begins.
All “competent persons” shall have completed Electrical Safe Work Practices
Training.
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Deviation From The Procedure:
•
Any deviation not addressed in this procedure shall require additional
authorization from Cameron Project Manager, Cameron Safety
Department and shall also be approved on site by Inspector/Job
Sponsor and shall have completed Cable Demolition Checklist
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Any cable to be demoed that is of greater than 600 VAC shall be on a separate
Work Permit and also be treated as a deviation from this procedure.
An SOP shall be reviewed and attached to the JSA by the Demolition Crew to be
used as a template/guide to help write a detailed JSA. Note: This is to be used
ONLY as a guide and shall be revised as needed, to be site specific.
When it is not possible to remove cable from tray/rack and have cable completely
on the ground the “competent person” OR any other worker shall exercise Stop
Work Authority and the crew shall complete a Cable Demolition Checklist, which
includes obtaining signatures from Cameron Superintendent and Client (Job
Sponsor/Inspector.) When deviating from cutting cable outside of tray completely
on the ground the JSA shall be amended to reflect said change.
Length of cable to be cut at one time should be kept to a minimum (where
possible).
Special precautions (including a “pause session”) and verifications shall be taken
when the cable(s) or conduit penetrate a building wall, floor, beam, or different
elevation
In addition to all above stated Hazards, Rules 1&3 of Shell’s 12-Life Saving Rules
shall be followed.
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Questions & Answers
1. The cable demo procedure is designed to eliminate cutting live electrical cables
that could result in a serious injury and/or property damage?
A. True
B. False
2. A JSA and Work Permit is the only documentation needed to begin demoing cable?
A. True
B. False
3. The only location a cable shall be cut is on the deck floor?
A. True
B. False
4. No cut shall be made unless the “I.D. sleeve” is within 12” of the cut point and
verified by both the craft person(s) and the designated competent person(s)?
A. True
B. False
5. Personnel verifying cable and cutting ty-wraps shall take all necessary precautions
to avoid damaging adjacent cable. In addition, every effort shall be made to collect tywrap pieces to prevent them from falling through grating?
A. True
B. False
6. All “competent persons” shall never assure themselves and other personnel that
the cable to be removed has been de-energized with voltage meter before proceeding
with cable removal?
A. True
B. False
FLOW CONTROL I&E
Questions & Answers
7. All areas below the trays where demolition is ongoing shall be barricaded off with
caution/danger tape as applicable?
A. True
B. False
8. Special precautions (including a “pause session”) and verifications shall be taken
when the cable(s) or conduit penetrate a building wall, floor, beam, or different
elevation?
A. True
B. False
9. Any deviation not addressed in this procedure is not required to have additional
authorization from Cameron Project Manager, Cameron Safety Department and shall
also be approved on site by Inspector/Job Sponsor and shall have completed Cable
Demolition Checklist
A. True
B. False
10. Would you allow a family member to demo cable without the proper precautions
and procedures in place?
A. Yes
B. No
FLOW CONTROL I&E
• Remember always:
– If it looks unsafe, STOP WORK
– Watch out for each other
– Think before you act…If in doubt ask!
• If we are diligent about these concepts then we can be sure:
No one gets hurt, nothing gets harmed
Thank you ... STAY SAFE!
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