Description
Project Objective: Develop an exposure monitoring plan, for the scenario provided.Remember to consider all possible hazards by understanding the process. The monitoring plan itself addresses airborne, skin, and surface exposure. If other hazards are present, list but do not include them in the overall plan. A rubric is available for guidance as well as a template. You do not need to stick to the formate as long as all relevant information is provided. The exposure monitoring plan is submitted in a report format following APA guidelines. You may deviate from APA guidelines to save paper and use 1 point spacing with narrow page margins. However, the font is 12 pts. Font for captions and labels along with font within tables can be 10 pts. Tables are preferred over large paragraphs.The monitoring plan is individual, no two plans should look alike as the approach is individualized based on the objectives you define.Gain a basic understanding of the processDefine objectives of sampling strategyState all assumptionsResearch contaminates and develop a health hazard evaluationResearch and select sampling methods to meet the objectivesIndicate desired flow rate, sampling duration, number, and type of media alongInclude who, when, and where for sample collection.Discuss how exposure results are prioritized.
Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
Montana Mill Works Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
Contents
Objectives………………………………………………………………………………………………………………………. 3
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Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
Agents of Interest …………………………………………………………………………………………………………… 3
Facility and Operations Description …………………………………………………………………………………… 4
Employee Demographics …………………………………………………………………………………………………. 4
Sampling Strategy …………………………………………………………………………………………………………… 5
Sampling Methodology ……………………………………………………………………………………………………. 6
Results Interpretation ……………………………………………………………………………………………………… 7
Recommendations and Conclusions ………………………………………………………………………………….. 7
References …………………………………………………………………………………………………………………….. 7
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2/24/2020
Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
Objectives
The primary objective of the Montana Mill Works 2020 Exposure Monitoring Plan is to
XXXX. Additional supporting objectives include XX, and developing future sampling strategies.
Agents of Interest
The agents of interest, and associated health effects, captured in this exposure
monitoring plan are summarized in Table 1. Applications and process considerations are outlined
in the Facility and Operations Description section of this plan. Additional physical hazards
associated with the agents of interest include process related noise, XX. Metal Working Fluid
(MWF) must be adequately maintained and replaced to prevent microbial growth, which can
introduce biological contaminants of concern (“CDC – Metalworking Fluids – NIOSH Workplace
Safety and Health Topic”, 2013).
Table 1: Summary of Agents of Interest
Agent
Hexavalent
Chromium (CrVI)
•
•
•
•
•
•
Carbon Black
3
•
•
•
OEL
PEL: 0.005
mg/m3
AL: 0.0025
mg/m3
REL: 0.0002
mg/m3
REL-STEL:
TLV: 0.0002
mg/m3 (I)
TLV-STEL:
0.0005 mg/m3
(I)
PEL: 3.5 mg/m3
REL: 3.5 mg/m3
TLV: 3 mg/m3
(I)
Application
Component in Paint used in
Painting Area
•
Target Organs
Respiratory System
Lung and Sinonasal
cancer
Asthma
•
Respiratory System
Component in Paint used in
Painting Area
•
•
2/24/2020
Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
OEL: Occupational Exposure Limit
REL: National Institute of Occupational Safety and Health (NIOSH) Time Weighted Average (TWA) Recommended Exposure Limit
PEL: Occupational Safety and Health Administration (OSHA) TWA Permissible Exposure Limit
STEL: Short Term Exposure Limit
TLV: American Conference of Governmental Industrial Hygienists (ACGIH) TWA Threshold Limit Value
R: Respirable fraction
I: Inhalable fraction
AL: OSHA Action Level
XX system effects are associated with XX. Because the XX system is the target organ for
all agents, consideration XXX.
Facility and Operations Description
The milling process is broken into XXX
The milling facility also contains a break room and supervisors’ office on the processing
floor. The managers’ office is located in a separate building area. The break room door is often
left open, allowing the potential for contaminants to migrate into the space.
Figure 1: Montana Mill Works Plant Layout, 2020
Employee Demographics
The mill operates on three shifts with a total of
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Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
. The total number of employees and respective job titles are presented in Table 2.
Table 2: Number of Employees at Montana Mill Works by Process Step and Shift
1st Shift
2nd Shift
3rd Shift
Process Step
(0800-1630)
(1600-0030)
(0000-0830)
Machine Area 1
Machine Area 2
Hand Finishing
Painting
Maintenance
Supervisor
Manager
Sampling Strategy
Prior to the collection of quantitative exposure monitoring data, qualitative industrial
hygiene risk assessments including XXX
Employees of Montana Mill Works will be broken into Similar Exposure Groups (SEGs)
based on the job tasks assigned and agents of concern. The sampling strategy for each SEG is
outlined in Table 3.
Table 3: Overview of 2020 Exposure Monitoring Plan Sampling Strategy by SEG
SEG
Machine Area
Operators
Hand Finishing
Painting
Maintenance
Supervision
Number of
Employees
Number of
Samples*
Task Descriptions & Sampling
Considerations
Agent(s) of
Concern
•
•
TBD
TBD
*Number of samples based on XXXXX
NA: Not Applicable. Quantitative monitoring will not be captured during this monitoring event
TBD: To Be Determined. Specific agents of concern have not been identified. Qualitative evaluation of job tasks,
controls, and potential exposures must be completed prior to quantitative sampling
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Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
This sampling strategy will focus on the three main production steps, additional
monitoring will be performed based on qualitative exposure assessment. A total of XX personal
breathing zone air samples will be collected during this exposure monitoring event.
Sampling Methodology
Sampling methodology is based on the applicable analytical method. The methodology
for each agent of concern including applicable SEG, required sampling equipment, flow rates,
sample duration and area, and reference method are presented in Table 4. Flow rate and
sample duration were calculated to ensure compliance with the flow rate and volumes
specified in the applicable method. A total of XX blanks will be submitted for laboratory analysis
for each agent of interest.
Table 4: Sampling Methodology for the Montana Mill Works 2020 Exposure Monitoring Plan
Agent of Interest
SEG
Hexavalent
Chromium (air)
Painting
Hexavalent
Chromium (wipe)
Painting/
Facility
Wide
Painting
Carbon Black
Equipment
Needed
• NaOH coated
binderless
quartz filter
• Sampling
Pump
• 37mm PVC
filter
Flow
rate
2 L/min
Sample
Duration
240 min
NA
•
2 L/min
Sample
area: 100
cm2
240 min
•
Tared 5µm
PVC
membrane
Sampling
pump
Analytical Method
Mod. OSHA ID-215
Mod. OSHA W4001
Mod. NIOSH 5000
*Aluminum is not listed in NIOSH method 9102 however, confirmation has been received from Galson Laboratory
(American Industrial Hygiene Association (AIHA) accredited) for analysis
PTFE: Polytetrafluoroethylene
MCE: Mixed Cellulose Ester Membrane
NaOH: Sodium hydroxide
PVC: Polyvinyl Chloride
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Homework 5: Exposure Monitoring Plan
IH5286: Sampling and Evaluation of Health Hazards
Student B Good
Results Interpretation
Results of personal breathing zone samples will be compared to XX.
An exposure rating will be applied XX.
Recommendations and Conclusions
Based on the preliminary XX
References
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Excellent 10
Report
format and
proper
citation
thoughout
the
document,
proper
captions and
lables 10%
Objective
clearly
stated as
well as
assumptions.
Plan
designed to
meet
objectives
5%
SEG.
Possible SEG
identified,
SEGs are
logical based
on
assumptions
or SEGs are
not feasible
based on
assumptions
10%
Health
hazard
evaluation.
Agent, OELs ,
relevant
physical
properties,
target
organs,
relevant GHS
information
summarized
20%
Above Ave 9
Good 8
Below Ave 7
Fair 6
Poor 5
Sample No.
Number of
workers
selected and
method
used to
select the #
of workers is
clear.
Number of
samples per
worker
identified
20%
Sample
Period.
Sample time
determine
using the
method
sample
volume min
and max.
Sample time
notes for
each agent.
Flow rate for
each agent
provided
20%
Methods
identified
correctly.
5%
Other
concerns.
Other
possible
hazards or
concerns
noted 5%
Follow-on
strategy
Based on the
findings,
how will risk
be
determined
5%
10%
deducted
per day if
late
Industrial Hygiene Sampling Scenario –
MT Mill Works
Tasks
•
•
Develop an exposure monitoring plan considering chemical and physical hazards
o Define the objectives of the sampling strategy
o Research hazardous materials
▪ Develop a health hazard evaluation
o Develop your scope of work
▪ SEGs
▪ Sampling flow rate, sample time, number of media, expected sample volume, number of
workers, number of samples per worker
o Determine a strategy for follow-up based on the results using a risk rating
Prepare a detailed sampling plan in a report format citing all references appropriately
Assumptions:
•
•
•
You are a new hire at Montana Mill Works. The previous sampling data are vague and therefore you
don’t feel confident using the past IH survey as a baseline.
You do not have a strict budget, however, consider cost when you determine the sampling strategy.
You can freely select employees
Description:
Major work areas on the shop floor
• Machine area one
• Machine area two
• Hand finish area one
• Painting
• Supervisor Office
Machine area one contains 4 (four) open bed SNK bridge mills. A large-scale bridge mill is seen in the video. A
bridge mill shapes metal through a cutting process. Metal Working Fluids (MWF) is used to cool the cutting tool
during milling. Disregard the individual components in the MWF when developing the sampling protocol.
•
Video of large-scale bridge mill https://www.youtube.com/watch?v=KIJpWjD_gWY
Machine area one mills are similar to the machine seen in the previous video one but use Metal Working Fluids
as seen in this video https://www.youtube.com/watch?v=r_2zbtLuHFo
Because the mill bed is open, a fine mist of Metal Working Fluids is generated. The mist level changes with the
cutting program. Rough in work (first cuts) tend to produce higher noise and more mist. Eleven people work in
this area, four on first and second shift and two on third shift. The last worker fills in where need, primarily on
day shift.
Machine area two is the same as machine area one.
The hand finishers wipe the parts down to remove the dust with isopropyl alcohol 99% throughout the process
of removing burrs and imperfections from the machined part. The process of finishing the product is similar to
the one seen in the video https://www.youtube.com/watch?v=LFcQubS_S-g. The hand finish work is preformed
within an environmental booth (dust collection booth). http://www.hydrotron.net/products/booths/. The
booth is a designated a hearing conservation zone. Aluminum metal dust is generated during the hand finish
process. 12 hand finishers work days only.
The painting occurs after the part is assembled. The painting is preformed with a small paint brush. The work
is ‘touch up work’; paint is not sprayed. Fifteen workers are in this area all on day shift. They perform other
tasks in addition to painting but paint every day. The painting task has an average duration of 4 hours. The area
has dilution ventilation.
The painters clean with a solvent, Methyl Ethyl Ketone. Disregard the painting process for this evaluation.
Four maintenance personal work at the facility, two on days and one on both second and third shift. Each shift
has a supervisor and a manager, supervisor offices are on the shop floor where as manager offices are not.
Disregard their exposure for this survey.
The lunch room is separated from the industrial area by a door that is often left open. All workers wear safety
glasses, steel toed shoes and gloves. The gloves for the machinist are cut and fluid resistant. The gloves for the
hand finishers are cut and flash resistant. Painters do not wear goves.
o First shirt: 8AM-4:30PM;
o Second shift: 4PM:12:30AM
o Third shift: 12AM -8:30AM
o
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