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TITLE: |
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DOCUMENT ID: |
6682
Beryllium Article Control and Handling |
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1.0
Purpose
Beryllium is present at Jefferson Lab in alloys and in pure and ceramic form for targets and various beamline components. Beryllium copper alloys can also be found in RF waveguide assemblies. The materials containing beryllium at Jefferson Lab are considered to be “articles”, which should present no inhalation hazard under normal handling conditions, because handling of solid components does not normally result in measurable airborne beryllium particulate.
2.0
Scope
This chapter contains information on the control and handling of beryllium articles.
Table 1: Required Beryllium
Safety Training by Job Classification
Training Course |
Beryllium
Worker |
Beryllium
Awareness MED11 |
X* |
* Per ES&H Manual
Chapter 6800 Appendix T1 Medical
Monitoring |
3.0
Inventory
3.1
Beryllium Inventory
· Beryllium copper alloys used in waveguide assemblies.
·
Beryllium & beryllium
oxide targets and windows used in the beamline in the CEBAF injector and
experimental halls.
3.2
Control of
Beryllium Inventory
·
Any beryllium
purchases must follow the process outlined in ES&H Manual Chapter
6610 Appendix T2 Chemical Requisitioning and Receiving.
·
Beryllium articles
must be kept in a locked storage area with labels (Figure 1) applied to the
storage space.
·
Inventory is
maintained by a custodian for the work group using the beryllium articles.
4.0 Hazard Avoidance
·
Handling and storage
of beryllium
articles at Jefferson Lab does not require a special work permit as long as
the requirements in this chapter are met.
·
Always wear protective gloves when handling beryllium articles.
·
Welding or machining beryllium articles is prohibited at Jefferson
Lab.
· Specify non-beryllium components where possible when ordering electronic components.
5.0
Responsibilities
5.1
Supervisors/Subcontracting
Officer’s Technical Representatives (SOTRs)
·
Identify employees
handling beryllium articles and assure proper training.
·
Minimize the need for
contact with beryllium articles, seek alternative material.
·
Utilize beryllium
custodian
to maintain inventory of all beryllium articles. Contact Industrial Hygiene for
assistance with identifying custodian in a specific work area.
·
Store beryllium articles
separately and with hazard avoidance signage.
·
Contact ESH&Q
Environmental Group for recycling or disposal of beryllium articles.
5.2
ESH&Q
Division – Industrial Hygienist
·
Maintain the site
inventory of beryllium using information from beryllium custodians.
·
Conduct beryllium
monitoring when necessary.
5.3
ESH&Q
Division – Environmental Engineer
·
Accept waste beryllium
articles and debris for proper disposal.
5.4
Occupational
Medicine
·
Provide beryllium
hazard awareness training.
·
Provide medical
monitoring where appropriate.
6.0
Qualifications
·
Anyone handling beryllium
articles must complete beryllium awareness training (MED11).
7.0
Program Summary
7.1
Regulatory Limits
Table 2: Applicable limits |
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Limit Type |
Limit |
Relevant exposure and surface limit
information |
OSHA PEL-TWA
|
0.2 ug/m3 |
Permissible exposure limit (PEL) is calculated
as an 8-hour time weighted average (air limit) |
OSHA
action limit |
0.1 ug/m3 |
Calculated as an 8-hour time weighted
average (air limit); at the action limit other measures must be utilized to
reduce exposures |
OSHA
STEL |
2.0 ug/m3 |
Short-term exposure limit (STEL)
determined over a 15 minute sampling period. |
DOE
Housekeeping level |
3
ug/100cm2 |
Maximum level of beryllium allowable on
surfaces in areas where beryllium is
used (surface limit) |
DOE
release criteria |
0.2
μg/100 cm2 |
Maximum level of beryllium for equipment
that is being released to the general
public or for use in a non-beryllium area of a DOE facility (surface limit). |
The OSHA PEL-TWA is an
acceptable concentration of beryllium in air, averaged over an 8-hour workday
that nearly all workers may be repeated exposed for a working lifetime without
adverse effects.
The
housekeeping level and release criteria levels are mandated by 10
CFR Part 850, Chronic Beryllium Disease Prevention Program and are not to
be exceeded.
The
process steps outlined in Sections 7.4 – 7.6 will identify work that may
trigger limits in Table 1.
7.2
Hazard Communication
All beryllium
articles must be labeled with the beryllium hazard sign (see figure 1).
7.3
Handling and
Storing of Beryllium
Articles
·
Beryllium
articles are to be stored separately in a locked storage area.
·
Hazard communication
sign in Figure 1 is affixed to the storage container.
· Handlers of beryllium articles must wear protective gloves.
7.4
Beryllium Regulated Areas
Jefferson
Lab does not have any work areas that exceeded airborne concentrations at or
above OSHA action limit. If it is anticipated that a work task could
potentially generate beryllium in air above the OSHA action limit, a regulated
area and hygiene facilities will be established per 10 CFR 850 prior to the
task beginning.
7.5
Housekeeping
If surface contamination is suspected, suspend work and contact Industrial Hygiene immediately. In areas where beryllium articles are in use, surface contamination must be limited to 3 ug/100 cm2. Surfaces with beryllium contamination greater than 3 ug/100cm2 must be cleaned and monitored by IH until the surface is below the housekeeping limit.
7.6
Beryllium
Release Criteria - Cleanup/Recycling/Disposal
7.7
Response to Non-Routine Conditions
Involving Beryllium
Articles
Most beryllium articles
used at Jefferson Lab are in the form of windows and most of these windows are protected
with a coat of varnish. The varnish is applied by the vendor and is a
protective barrier. When the windows interact with the electron beam, depending
on their location, the beam may burn off this protective barrier (window
appears to be charred in one location, see Figure 2 below).
Figure 2: beryllium windows showing varnish burn off
There could also be cases where
beryllium articles may be damaged or broken during use and potentially cause
contamination.
Actions required when article
damage or varnish burn-off is observed:
·
Notify Industrial
Hygiene if targets that have been in the beam and show evidence of burn-off of
protective coatings or beryllium contamination is suspected (i.e. window break)
for housekeeping/release criteria monitoring and air monitoring.
·
Handle the beryllium
article only while wearing protective gloves.
·
Cover the exposed
surface with plastic and apply a beryllium hazard sign.
8.0
Revision Summary
Revision 1.1 – 07/10/17 – Updated to comply with recent
updates to the OSHA beryllium standard
Revision 1.0 – 12/14/15 – Periodic Review; updated to reflect current lab
practices
Revision 0.1 – 05/20/14
– Added Required Safety Training Table
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
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ESH&Q Division |
07/10/17 |
07/10/22 |
1.1 |
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