|
TITLE: |
||
|
|||
DOCUMENT ID: |
6112 Interlock Bypass Program |
||
|
|||
Interlocks
serve to protect personnel and/or equipment by constraining the operation of
equipment, either electronically or mechanically, and typically rely on a
transducer, sensor, switch, or other physical mechanism to keep equipment from
being placed in an unsafe state.
From time to time it may be
necessary to bypass a system interlock. Jefferson Labs Interlock Bypass Policy
describes the administrative requirements for bypassing system interlocks on
equipment.
NOTE: This
policy does not apply to equipment
associated with the Personnel
Safety System (PSS), which is governed by the Jefferson Lab Personnel Safety System Configuration Control Policy. Any maintenance or service
work associated with hazardous energy sources are subject to Lock,
Tag, and Try (LTT) as described in ES&H
Manual Chapter 6110 Lock, Tag, Try (LTT) Program. |
Bypassed interlocks are
identified by an applied Interlock Bypassed tag and/or electronic entry in the Accelerator
Bypassed-Interlocks Log (ABIL). Specific steps used to identify bypasses
depend on whether the equipment is in service or out of service.
This
policy defines the requirements, responsibilities, and qualifications necessary
to identify installed interlock bypasses on equipment at Jefferson Lab.
Table
1: Required Safety Training by Job Classification
Training Course |
Qualified
Bypass Interlock Individual |
Bypassing Interlocks SAF144 |
X |
3.1
Qualified
Bypass Interlock Individual
·
Obtain training in SAF 144 Bypassing Interlocks.
·
Know the location of blank
Interlock Bypassed tags.
·
Properly fill out an Interlock
Bypassed tag and/or enter ABIL for each bypass you install.
·
Keep ABIL entries current by
ensuring they are removed on or before the removal date, or if necessary change
the removal date prior to its expiration.
·
Be aware of any bypasses entered in
ABIL for equipment installed in your system, and coordinate with the person who
installed the bypass, as necessary. ABIL will automatically send email
notifications of bypasses installed in your system.
·
Designate an alternate System
Owner via email to ABIL
Administrator.
·
Using the Job Task Analysis
(JTA), identify individuals under your authority who are assigned to bypass
interlocks.
·
Ensure training is current with SAF144 Bypassing Interlocks for Qualified Bypass Interlock Individuals
under your authority.
4.0
Technical
Appendices
4.1
Interlock
Bypass Procedure
ES&H
Manual Chapter 6112 Appendix T1 Interlock Bypass Procedure outlines the administrative
requirements for identification, installation, and tracking of bypassed
interlocks.
5.0
Revision
Summary
Revision
0.3 10/13/16 Periodic Review; updated
TPOC from R.Lauze to K.Baggett
Revision 0.2 05/20/14
Added Required Safety Training Table
Revision 0.1 12/17/13 Added invisible links to Martha
program in subparagraphs per MJ.Bailey
Revision 0.0 08/05/13 New content written to reflect
current laboratory operations
|
ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
|
|
ESH&Q Division |
10/13/16 |
10/13/21 |
0.3 |
|