|
|
TITLE: |
||
|
|
|||
|
DOCUMENT ID: |
3320
Temporary Work Permits |
||
|
|
|||
1.0
Purpose
Certain hazardous, recurring activities performed at
Jefferson Lab are restricted and only undertaken when authorized by a temporary
work permit. These work permits ensures
that all hazards have been considered and associated risks have been
acknowledged and mitigated.
The following activities have been identified as
requiring a temporary work permit prior to execution:
·
Confined-Space Work – ES&H Manual Chapter 6160 Confined Space Entry
·
Energized Electrical Work – ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Policy
·
Fire Hazard Work – ES&H Manual Chapter
6122 Appendix T2 Fire Protection: Hot
Work Permit
·
Radiological
Work
– Jefferson Lab Radiological Control Supplement
· Dig/Blind Penetration – Facilities Management’s Excavations and Blind Penetrations into Walls & Floors
2.0
Scope
Because of the severe consequences which could incur during the above noted activities, they have been provided for in separate documents as noted above. These procedures, as outlined, provide for a thorough hazard evaluation.
3.0
Responsibilities
Responsibilities
are outlined within the associated documents.
4.0
Expectations
4.1
Confined-Space
Entry Permit
According to Occupational Safety
and Health Administration (OSHA) a confined
space generally has one or
more of the following characteristics:
·
Hazardous
atmosphere or difficulties
with ventilation;
·
Contains
a material that has the potential to engulf an entrant;
·
Walls
that converge inward or floors that slope downward and taper into a smaller
area which could trap or asphyxiate an entrant;
·
Contains
a recognized safety or health hazard,
At
Jefferson Lab these areas require a Confined-Space
Entry Permit prior to entry.
See ES&H Manual
Chapter 6160 Confined Space Entry for
guidance.
4.2
Energized
Electrical Work Permit
Service
work performed on AC electrical power distribution system at Jefferson Lab with
equipment in an energized state requires an approved Energized
Electrical Work Permit as described in ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Policy. The permit establishes the justification for
working on “live” equipment, the required training qualifications of the
workers, and any unusual aspects of the work.
See ES&H
Manual Chapter 6220 Appendix T1
Energized Electrical Work Permit (EEWP). Note: Mode 3 work on Class II or above
electrical power distribution equipment requires the approval of the Laboratory
Director.
4.3
Hot Work Permit
Work that presents an inherent risk
of creating a fire is restricted at Jefferson Lab. Open-flame and spark-producing activities
such as welding or soldering are authorized by a Fire Hazard Work Permit. See ES&H Manual Chapter 6122 Appendix T2 Fire Protection: Hot Work Permit.
Activities which present the
possibility of significant exposure to ionizing radiation are restricted at
Jefferson Lab. Such activities are
allowed only after careful analysis and planning to minimizing personnel
exposure. Exposure must be As Low As Reasonably Achievable (ALARA).
Jefferson Lab’s Radiation Control
Group (RadCon) initiates and authorizes Radiological Work
Permits. It informs workers of
entry requirements and radiological conditions in the work area, and provides
mechanisms to reduce worker exposure.
A Radiological Work
Permit is required for any of the following
situations:
·
The
anticipated radiation dose rate to the
trunk of a worker's body – usually measured 30 cm (1 ft) from the work piece –
is greater than 25 mR/hr
·
The
total estimated dose
to a worker exceeds 25 mrem
·
The
workpiece measures 250 mR/hr
or greater on contact
·
Entry
into a posted contamination, High Radiation
Area, or Airborne
Radioactivity Area is necessary
Contact
Radiation Control at x7551 (876-1743 cell phone) to initiate a Radiological Work
Permit.
4.5
Dig/Blind Penetration Permit
Excavation, digging, boring into soil; drilling or cutting blind penetrations into floors and wall; and demolition at Jefferson Lab is performed only after utilities have been located and marked by a competent person.
If
you have work that requires digging or drilling into soil or blind penetration
into walls or floors with tools or fasteners, contact Facilities Management
(x7400) to complete a Dig/Blind
Penetration Permit.
|
|
ISSUING
AUTHORITY |
CHAPTER
AUTHOR |
APPROVAL
DATE |
EFFECTIVE
DATE |
EXPIRATION
DATE |
REV. |
|
|
|
|
ESH&Q Division |
10/05/09 |
01/01/10 |
10/05/12 |
0 |
|