iaq building 6 basement
DESCRIPTION
IAQ Building 6 Basement. Initial Request To [email protected] January 3, 2012. Industrial Hygiene Responds January 9, 2012. Mold sampling conducted Noted very dusty conditions and recommend a thorough cleaning Notice the supply air vents are blocked with Plexiglas - PowerPoint PPT PresentationTRANSCRIPT
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IAQ Building 6 Basement
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Initial Request To [email protected] 3, 2012
Hi, I would like an Indoor Air Quality assessment performed for rooms 6-022 and 6-031, with specific attention paid to mold levels. 6-022 is an office, and 6-031 is an associated lab space. Thanks,
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Industrial Hygiene RespondsJanuary 9, 2012
• Mold sampling conducted• Noted very dusty conditions and recommend
a thorough cleaning• Notice the supply air vents are blocked with
Plexiglas• Decided to come back with the IAQ Meter to
take further measurements (CO2, CO, Temperature, humidity)
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Industrial Hygiene RespondsJanuary 9, 2012
• Industrial Hygiene notifies the EHS Coordinator of the complaint and the blocked supply vents.
• EHS Coordinator determines multiple work-orders were placed by the group to have the heat fixed. Works with the Facilities and Security Supervisor for Chemistry to more actively engage Facilities about the problem.
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January 6 Mold Sampling
Table 1: Jan 6, 2012 Culturable Mold Sampling
Location Colony Forming Units (CFU) per cubic meter of air.
Culturable species % of Control
6-022 110 CFM/m3 Heterogeneous mixture of species. 550%
6-031 5 CFU/m3 Heterogeneous mixture of species. 25%
Outdoor Control 20 CFU/m3
Heterogeneous mixture of species. N/A
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January 11 to 20 CO2
0
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400
600
800
1000
1200
14:0
0:12
19:5
5:12
1:50
:12
7:45
:12
13:4
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19:3
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1:30
:12
7:25
:12
13:2
0:12
19:1
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1:10
:12
7:05
:12
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:12
6:45
:12
12:4
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0:30
:12
6:25
:12
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18:1
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:12
6:05
:12
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17:5
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5:45
:12
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23:3
0:12
5:25
:12
11:2
0:12
17:1
5:12
23:1
0:12
5:05
:12
Figure 1: CO2 Levels 6-0221/11/2012-1/20/2012
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Jan 11 to 20 Temperature
60
65
70
75
80
85
14:0
0:12
19:5
5:12
1:50
:12
7:45
:12
13:4
0:12
19:3
5:12
1:30
:12
7:25
:12
13:2
0:12
19:1
5:12
1:10
:12
7:05
:12
13:0
0:12
18:5
5:12
0:50
:12
6:45
:12
12:4
0:12
18:3
5:12
0:30
:12
6:25
:12
12:2
0:12
18:1
5:12
0:10
:12
6:05
:12
12:0
0:12
17:5
5:12
23:5
0:12
5:45
:12
11:4
0:12
17:3
5:12
23:3
0:12
5:25
:12
11:2
0:12
17:1
5:12
23:1
0:12
5:05
:12
Figure 2: Temperature in Rom 6-0221/11/2012-1/20/2012
Shaded area=recommended range
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Jan 11 to Jan 20 RH
0
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60
14:0
0:12
19:5
5:12
1:50
:12
7:45
:12
13:4
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1:30
:12
7:25
:12
13:2
0:12
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1:10
:12
7:05
:12
13:0
0:12
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0:50
:12
6:45
:12
12:4
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0:30
:12
6:25
:12
12:2
0:12
18:1
5:12
0:10
:12
6:05
:12
12:0
0:12
17:5
5:12
23:5
0:12
5:45
:12
11:4
0:12
17:3
5:12
23:3
0:12
5:25
:12
11:2
0:12
17:1
5:12
23:1
0:12
5:05
:12
Figure 3: Relative humidity in 6-0221/11/2012-1/20/2012 Shaded
area=recommended range
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Symptoms (In Last 6 Months)
• Fatigue• 1 case of pneumonia• Headaches• Nose bleeds• Vertigo
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Supply Air Vents
• All room vents blocked
• Reheat coils not functioning
• Cold air blowing on students
• Multiple work-orders placed by the group to have the heat fixed
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Supply Air Vents
• Work-orders placed on: 9/28/1010/6/104/22/11
• Does not include “repeated phone calls”• On 4/27/11 the student decides he is not having
success with the work-order process and finds a Facilities Comments form on the web and submits another request.
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Supply Air Vents
• Facilities technician informs group that reheat coils cannot be fixed.
• Facilities suggests as a solution they can cover over the supply vent blowing on the student.
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Supply Air Vents
• Reheat Coils Fixed• Vents Unblocked On
or Around January 23rd
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January 26 Mold Sampling
Table 1: Jan 26, 2012 Culturable Mold Sampling
Location Colony Forming Units (CFU) per cubic meter of air. Species
6-022 (1) 5 CFM/m3 Heterogeneous mixture of species.
6-022 (back) 5 CFU/m3 Heterogeneous mixture of species
6-021 0 CFU/m3 NA
Hallway 0 CFU/m3 NA
Stairwell 30 CFU/m3 Heterogeneous mixture of species
Outdoor 50 CFU/m3 Heterogeneous mixture of species
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February 2nd
• Industrial Hygiene revisits the space to assess the air using the IAQ meter.
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February 2 to February 9
0
200
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600
800
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1200
1400
15:0
6:37
19:4
6:37
0:26
:37
5:06
:37
9:46
:37
14:2
6:37
19:0
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4:26
:37
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:37
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:37
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:37
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:37
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:37
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:37
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:37
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:37
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:37
11:0
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15:4
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20:2
6:37
1:06
:37
5:46
:37
Figure 1: CO2 Levels in 6-0222/2/12-2/9/12
Shadedarea=reccomended range
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February 2 to February 9
60
65
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80
15:0
6:37
19:3
8:37
0:10
:37
4:42
:37
9:14
:37
13:4
6:37
18:1
8:37
22:5
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3:22
:37
7:54
:37
12:2
6:37
16:5
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2:02
:37
6:34
:37
11:0
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15:3
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0:42
:37
5:14
:37
9:46
:37
14:1
8:37
18:5
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23:2
2:37
3:54
:37
8:26
:37
12:5
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17:3
0:37
22:0
2:37
2:34
:37
7:06
:37
11:3
8:37
16:1
0:37
20:4
2:37
1:14
:37
5:46
:37
Figure 2: Temperature Levels in 6-0222/2/12-2/9/12
shadedarea=reccomended range
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February 2 to February 9
0
10
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70
15:0
6:37
19:3
8:37
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:37
4:42
:37
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:37
13:4
6:37
18:1
8:37
22:5
0:37
3:22
:37
7:54
:37
12:2
6:37
16:5
8:37
21:3
0:37
2:02
:37
6:34
:37
11:0
6:37
15:3
8:37
20:1
0:37
0:42
:37
5:14
:37
9:46
:37
14:1
8:37
18:5
0:37
23:2
2:37
3:54
:37
8:26
:37
12:5
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17:3
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2:34
:37
7:06
:37
11:3
8:37
16:1
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20:4
2:37
1:14
:37
5:46
:37
FIgure 3: RH in % in 6-0222/2/12-2/9/12
shaded area=reccomended range
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MIT Medical
• Industrial Hygiene contacts MIT Medical on February 6 to inform Dr. David Diamond of group members suffering from adverse medical conditions that they believe are related to the office space 6-022
• On February 13, Dr. Diamond visits the space and talks with some of the occupants.
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Action Taken
• It is recommended to seal up a trough in the floor that may be prone to flooding (and consequently prone to mold growth)
• Biosafety conducts another round of mold sampling on that day
• Biosafety submits a work order to Facilities to have the fan coil units checked to ensure they are not clogged, moldy, etc.
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Fan Coil Units
• Facilities reported the fan coil units had not been put on a PM schedule and were not being serviced.
• New filters installed.
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February 13
1BLocation Colony Forming Units (CFU) per cubic meter of air. 0BSpecies
6-022 kitchen 0 CFM/m3 NA
6-022a 0 CFU/m3 NA
6-022b near window 0 CFU/m3 NA
6-022b center 0 CFU/m3 NA
6-basement adjacent stairwell
5 CFU/m3 Aspergillus fumigatus
6-122 upstairs hallway 10 CFU/m3
Aspergillus niger
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Actions Taken
• Gone from essentially no air flow to fresh supply air entering the space, and significantly lower CO2 levels.
• Established that there is no mold problem• Had the fan coil units serviced and put on a regular
PM, so room temperature can be maintained.• Also loaned the group a HEPA filter unit• Informal visits indicated that the original students
that complained felt like the air was better
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April 2, 2012
• Two new lab group member emails EHS members involved and complain of being “more fatigued than usual”.
• On April 3 we meet with the group members and conduct another round of air sampling with the IAQ meter and another round of mold sampling.
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April 3 Mold Sampling
1BLocation Colony Forming Units (CFU) per cubic meter of air.
Species
6-022 kitchen 5 CFM/m3 Lecythophora
6-022a 0 CFU/m3 N/A
6-022b near window 5 CFU/m3 Cladosporium
6-022b near hall 10 CFU/m3 Aspergillus,
Verticillium Outdoor control 10 CFU/m3 Aspergillus
6-122 Hallway control
15 CFU/m3 Heterogeneous species
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April 3 to April 4
0
200
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1000
1200
13:2
5:12
14:0
8:12
14:5
1:12
15:3
4:12
16:1
7:12
17:0
0:12
17:4
3:12
18:2
6:12
19:0
9:12
19:5
2:12
20:3
5:12
21:1
8:12
22:0
1:12
22:4
4:12
23:2
7:12
0:10
:12
0:53
:12
1:36
:12
2:19
:12
3:02
:12
3:45
:12
4:28
:12
5:11
:12
5:54
:12
6:37
:12
7:20
:12
8:03
:12
8:46
:12
9:29
:12
10:1
2:12
10:5
5:12
11:3
8:12
12:2
1:12
13:0
4:12
13:4
7:12
14:3
0:12
Shaded area=recommendrange
CO2 Levels in 6-0223 April 2012 to 4 April 2012
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April 3 to April 4
65
66
67
68
69
70
71
72
73
74
75
13:2
5:12
14:0
7:12
14:4
9:12
15:3
1:12
16:1
3:12
16:5
5:12
17:3
7:12
18:1
9:12
19:0
1:12
19:4
3:12
20:2
5:12
21:0
7:12
21:4
9:12
22:3
1:12
23:1
3:12
23:5
5:12
0:37
:12
1:19
:12
2:01
:12
2:43
:12
3:25
:12
4:07
:12
4:49
:12
5:31
:12
6:13
:12
6:55
:12
7:37
:12
8:19
:12
9:01
:12
9:43
:12
10:2
5:12
11:0
7:12
11:4
9:12
12:3
1:12
13:1
3:12
13:5
5:12
14:3
7:12
Temperature in 6-0223 April 2012 to 4 April 2012
shaded area=recommended range
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April 3 to April 4
1015202530354045505560
13:2
5:12
14:0
6:12
14:4
7:12
15:2
8:12
16:0
9:12
16:5
0:12
17:3
1:12
18:1
2:12
18:5
3:12
19:3
4:12
20:1
5:12
20:5
6:12
21:3
7:12
22:1
8:12
22:5
9:12
23:4
0:12
0:21
:12
1:02
:12
1:43
:12
2:24
:12
3:05
:12
3:46
:12
4:27
:12
5:08
:12
5:49
:12
6:30
:12
7:11
:12
7:52
:12
8:33
:12
9:14
:12
9:55
:12
10:3
6:12
11:1
7:12
11:5
8:12
12:3
9:12
13:2
0:12
14:0
1:12
14:4
2:12
Relative Humidity in % in 6-0223 April 2012 to 4 April 2012
shaded area=reccomended range
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April 4
• The Facilities and Security Supervisor for Chemistry is asked to arrange with Facilities to have the volume of supply air tested.
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April 8, Students Meet with Dean For Graduate Education
• 4 people report chronic fatigue, balance impairment, vertigo, CNS infections, pneumonia, sinus infections
• “Went unreported by EHS, despite air quality complaint SOP mandating reporting of this to MIT Medical”
• “Students notifying occupational health themselves”• “Months without any response to health concerns”• “Randomly removing air filters; high mold levels led to
mandatory HEPA filter installations, residual flooding”• “No tests or quantification of mold levels, allergens, air
quality, despite repeated requests”
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Air Flow in Basement
Room No. Set Point Actual6-022 120 cfm 140 cfm
6-022B 320 cfm 130 cfm6-026 280 cfm 426 cfm6-030 160 cfm 152 cfm
SUPPLY AIR
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Ongoing Issues
• Complaints of rust in the water led to a request to have the water tested…
• A second round of water testing involving glycols…
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Lessons Learned
• Make sure researchers know who to contact if they are having trouble getting facilities to fix something.
• At the first report of “medical issues” refer to MIT Medical, and give MIT Medical a heads-up
• Communication is key!!!