IAQ Technologies Co Ltd

Transcription

1 IAQ Technologies Co Ltd Project Report Medical Center XX of February

2 IAQ Technologies Co Ltd Table of Content 1. Executive Summary 2. Summary Lab Report 3. Detail report 4. General Observation 5. Maintenance Schedule 6. Appendix I. Photo Before and after 2

3 EXECUTIVE SUMMARY 3

4 EXECUTIVE SUMMARY PROJECT : 7 TH FLOOR WHY MEDICAL CENTER The purpose of this project is to eliminate the existence of bacteria, fungi and mold growth activities that has caused numerous patches of mold and fungi on the 7 th floor of the Hospital. WHAT WE DID 100% LINES CLEANED AND DISINFECTED WE FIND AHU clean dirty supply return exhaust filter 3 Cooling coil 4.5 Blow fan 4 Blow fan chamber 4 DUCT FCU 1 UNITS CLEANED AND DISINFECTED DUCT UNITS CLEANED 20 AND DISINFECTED WE SUGGEST EVERY 90 DAYS EVERY 24 MONTHS AHU 100% OPEN AREA DISINFECTED BY LIQUID GERMXIT FCU AHU FCU DUCT EVERY 45 DAYS AHU FCU 4

5 SUMMARY LAB REPORT 5

6 Air Sampling and Swab Test Points ROOM 721 AHU A B C Air Sampling Points Swab Points 14 LOUNGE ROOM NURSES COUNTER 4 ROOM 701 ROOM 702 ROOM ROOM 718 LINEN ROOM VICC COUNTER ROOM 715 ROOM 712 ROOM 711 ROOM 716 ROOM

7 Result Tabulation Air Sampling Result Total Bacteria Count ( NMAM 0800) test taken 20/2 ( 8 days ) Sample ID DIFFUSER POINT 23/1/ /01/2017 Reduction Difference Reduction % Difference 1 LOUNGE ROOM AHU % 2 VICC COUNTER AHU % 3 LINEN ROOM AHU % 4 NURSES COUNTER AHU % 5 ROOM 701 FCU % 6 ROOM 702 FCU % 7 ROOM 703 FCU % 8 ROOM 708 FCU % 9 ROOM 711 FCU % 10 ROOM 712 FCU % 11 ROOM 715 FCU % 12 ROOM 716 FCU % 13 ROOM 718 FCU % 14 ROOM 721 FCU % Project : Medical Center Date received : 23/01/2017 Date Analyzed : 24/01/ /01/2017 Before SAMPLING AREA Rhizopus spp Percentage In 100cm2 (%) Aspergillus Spp Penicillium Spp Other Species AHU LEVEL 7 SUPPLY ND (<1) ND (<1) ND (<1) 100 AHU LEVEL 7 SUPPLY ND (<1) ND (<1) ND (<1) 100 AHU LEVEL 7 FINN COIL ND (<1) ND (<1) Swab Test Total Fungi Count ( NMAM 0800) test taken 20/2 ( 8 days ) Sample ID DIFFUSER POINT 23/1/ /01/2017 Reduction Difference Reduction % Difference LOUNGE ROOM AHU % VICC COUNTER AHU % LINEN ROOM AHU % NURSES COUNTER AHU % ROOM 701 FCU % ROOM 702 FCU % ROOM 703 FCU % ROOM 708 FCU % ROOM 711 FCU % ROOM 712 FCU % ROOM 715 FCU % ROOM 716 FCU % ROOM 718 FCU % ROOM 721 FCU % Project : Medical Center Date received : 27/01/2017 Date Analyzed : 27/01/ /02/2017 After SAMPLING AREA Rhizopus spp Percentage In 100cm2 (%) Aspergillus Spp Penicillium Spp Other Species AHU LEVEL 7 SUPPLY ND (<1) ND (<1) ND (<1) 100 AHU LEVEL 7 SUPPLY ND (<1) ND (<1) ND (<1) 100 AHU LEVEL 7 FINN COIL ND (<1) ND (<1) ND (<1) 100 7

8 Air Sampling and Swab Test Points ROOM % AHU A B C Bacteria reduction 44% 59% ROOM 701 ROOM % 78% 45% 78% Fungi reduction LOUNGE ROOM NURSES COUNTER 78% 59% ROOM % 48% No Change Fungi 98% 90% Penicillium reduction ROOM 718 LINEN ROOM VICC COUNTER 59% 86% 99% 97% 86% 100% ROOM 715 ROOM 712 ROOM 711 ROOM 716 ROOM % 12% 47% 0% 17% 0% 65% 44% 33% 90% 8

9 MICROB AIR SAMPLING TEST BACTERIA COUNT FUNGAL COUNT ROOM 721 FCU LOUNGE ROOM AHU VICC COUNTER AHU ROOM 721 FCU LOUNGE ROOM AHU VICC COUNTER AHU ROOM 718 FCU LINEN ROOM AHU ROOM 718 FCU LINEN ROOM AHU ROOM 716 FCU NURSES COUNTER AHU ROOM 716 FCU NURSES COUNTER AHU ROOM 715 FCU ROOM 701 FCU ROOM 715 FCU ROOM 701 FCU ROOM 712 FCU ROOM 702 FCU ROOM 712 FCU ROOM 702 FCU ROOM 711 FCU ROOM 703 FCU ROOM 711 FCU ROOM 703 FCU ROOM 708 FCU ROOM 708 FCU BEFORE AFTER 9

10 BEFORE MICROB AIR SAMPLING TEST AFTER AHU DIFFUSER NURSES COUNTER AHU LOUNGE ROOM AHU VICC COUNTER AHU NURSES COUNTER AHU LOUNGE ROOM AHU AHU DIFFUSER VICC COUNTER AHU BACTERIA COUNT FUNGAL COUNT FCU DIFFUSER ROOM 718 FCU ROOM 721 FCU LINEN ROOM AHU ROOM 701 FCU ROOM 702 FCU ROOM 703 FCU ROOM 718 FCU ROOM 721 FCU LINEN ROOM AHU ROOM 701 FCU ROOM 702 FCU ROOM 703 FCU FCU DIFFUSER ROOM 716 FCU ROOM 708 FCU ROOM 716 FCU ROOM 708 FCU ROOM 715 FCU ROOM 711 FCU ROOM 715 FCU ROOM 711 FCU ROOM 712 FCU ROOM 712 FCU 10

11 TEST CONDUCTED AT HOSPITAL BEFORE AFTER JABATAN FARMASI JABATAN FARMASI BACTERIA COUNT FUNGAL COUNT WET PREP ROOM JABATAN FARMASI 2 WET PREP ROOM JABATAN FARMASI 2 Total Bacteria Count ( NMAM 0800) TEST TAKEN 13/4/2016 ( 8 DAYS ) Sample ID 13/4/ /4/2016 Reduction Difference Reduction % Difference Sample ID 13/4/ /4/ % % 3 WET PREP ROOM % Total Fungi Count ( NMAM 0800) TEST TAKEN 21/4/2016( 8 days ) Reduction Reduction % Difference Difference % % WET PREP ROOM % 11

12 DETAIL REPORT 12

13 1) Detail Report Resolution from the Proposal Areas Involved : Ductworks of AHU and FCU coverage Findings Work Process Step 1) Removing accumulated contaminants Contaminants build in the duct works is the root cause of microbial growth. An unclean duct works over a long period of time promotes unprecedented microbial growth that has negative multiplier effects for an acceptable indoor air quality. Once the contamination is removed from the duct works, the job is made easier and better conditions will exist in order to minimize the use of disinfectants plus staff and visitors will work in a cleaner environment. Activities Conducted Ductworks: 1. Clean the ductworks using i. Air knife Colom cleaning ii. Negative tank ( vacuum ) iii. Personal Protective Equipment 2. All FCU supply flexible duct was removed and manually clean. Main supply duct was cleaned using Air Knife system with negative tank Challenges 1. Barriers accessing to ducts due to existing obstacles 2. Dry up insulation layer 3. Dry Up supply branch ducting 1. The ductwork found to be in moderate condition and generally covered with fine dust. 2. Some of the exhaust duct from FCU are heavily covered with dust. 3. Encountered a few fresh air and exhaust flexible ducting broken, as a result the FCU is getting fresh air from above the ceiling. ( Fixed the broken ducting ) 4. Encountered a few of the return grill was not connected to the main return duct. 5. Encountered a few exhaust fan is not functioning 6. Insulation layer of the main plenum was soaked and smelly 7. Branch supply ducting to lobby lift was wet and smelly. 8. Overall supply and return ducting has a moldy smell Clean supply Recommendation Dirty Clean return 1. Need to fix the unconnected return grill to the main return duct immediately. 2. To inspect the ducting condition on periodic basis 3. Cleaning frequency as follows; I. Supply duct : subject to cleanliness inspection every 24 months II. Return duct : subject to cleanliness inspection every 24 months III. Exhaust Duct : subject to cleanliness inspection every 24 months Dirty exhaust Dirty Ductworks FCU AHU 13

14 1) Detail Report Resolution from the Proposal Areas Involved : 20 units of FCU Findings Work Process Step 1) Removing accumulated contaminants Contaminants build in the duct works is the root cause of microbial growth. An unclean duct works over a long period of time promotes unprecedented microbial growth that has negative multiplier effects for an acceptable indoor air quality. Once the contamination is removed from the duct works, the job is made easier and better conditions will exist in order to minimize the use of disinfectants plus staff and visitors will work in a cleaner environment. Activities Conducted 1. All FCU blow fan chamber generally very dirty and covered with thick fine dust 2. Water retention inside the blow fan chamber at FCU room #720. We noticed the plaster ceiling was wet with mold presence. 3. No access to filter and blow fan chamber at room #721 but we are able to clean cooling coil Clean Recommendation Blow fan chamber Dirty Ductworks FCU FCU i. Compressed air ii. Spray gun iii. Dry vacuum iv. Forward DC v. GermXit liquid vi. GermXit Gel 1. Filter and blow fan chamber need to be clean every 45 days 2. Replenishment of GermXit gel as air treatment every 45 days, with a quantity of 2 X 200 grams 3. Disinfect using GermXit Liquid every 45 days 4. To inspect flexible ducting condition every 45 days AHU Challenges 1. Access window to FCU filter and blower was too narrow. 2. No access to clean FCU cooling coil 3. To dismantle all supply flexible duct for manual cleaning 14

15 1) Detail Report Resolution from the Proposal Areas Involved : AHU level 7 Findings Work Process Step 1) Removing accumulated contaminants Contaminants build in the duct works is the root cause of microbial growth. An unclean duct works over a long period of time promotes unprecedented microbial growth that has negative multiplier effects for an acceptable indoor air quality. Once the contamination is removed from the duct works, the job is made easier and better conditions will exist in order to minimize the use of disinfectants plus staff and visitors will work in a cleaner environment. Activities Conducted 1. Pre-filters were moderately dirty. 2. Cooling coil was very dirty with moldy smell 3. Blow fan was very dirty 4. We suspect the AHU was NOT properly dry when cleaning was conducted previously. As a result, when the AHU was switched on, water was blown into the ducting Clean filter Recommendation Dirty Clean Cooling coil Dirty Blow fan Dirty Ductworks FCU AHU i. Compressed air/water cleaning ii. Spray gun iii. Wet / dry vacuum iv. Forward DC v. GermXit liquid vi. GermXit Gel 1. AHU room should be cleaned thoroughly because of the design flow of the return duct stops at AHU room wall. This design collects all dust particles in AHU room, mixing with fresh air intake. It is recommended to lay epoxy paint on the floor of the AHU room for easier future cleaning. 2. To conduct periodic cleaning of the AHU system every 90 days. AHU Challenges 1. To remove dirt and mold accumulated inside cooling coil. 3 sequence of coil cleaning required to remove the dirt. 15

16 Filter Cooling Coil Positioning of GermXit at AHU and FCU FA AHU Disinfect with Liquid GermXit Blower Chamber SA Ducting Diffuser Placement of 8 KG GermXit Return Ducting FCU Placement of 2 X 200 gram GermXit 16

17 1) Detail Report Areas Involved : All AHU and FCU Resolution from the Proposal Findings 1. We discovered the root cause of bad mold smell all over the area are from the AHU 2) Air decontamination at return and fresh air intake Once we have removed contaminants in the duct works, we proposed placement of GermXit at the fresh air and return air intake to kill the bacteria, fungi and mold while it is traveling through the coils. By doing so, it also gives another protecting barrier on both filters and disinfect the coils rendering. Before third cleaning Activities Conducted Recommendation i. GermXit liquid spray ii. GermXit Gel placement iii. GermXit Container where the Gel is being placed Challenges 1. To maintain cleanliness of the AHU and FCU to avoid future growth of mold and bacteria, the followings are recommended; i. Placement of GermXit at a. AHU 8KG every 45 days b. FCU 2 X 200 Grams every 45 days c. Disinfect the area using liquid GermXit every 45 days. ii. Clean the AHU and FCU every 90 days 1. We are forced to clean the cooling coil and fin three times to ensure cleanliness by removing accumulated dirt. 17

18 GENERAL OBSERVATION 18

19 Observation that requires attention # Description Rooms/Areas Remarks 1 Fresh Air Flexible Duct Broken 706 To be Fixed by 2 Exhaust Flexible Duct Broken 709/718 Fixed 3 Exhaust Fan Not Working ( suspect ) 710/715/716/721 To be inspected by 4 Return Grill Not Connected to Main Return Duct Both Lift Lobby and Billing Room To be Fixed by 5 FCU Not Cold 707 Reported and Attended 6 Water Retention In FCU 720 Reported and Attended 19

20 MAINTENANCE SCHEDULE 20

21 AHU FCU Ductworks High Level Recommended Maintenance Schedule Task / Time Year 1 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year 2 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Supply Duct Cleaning Return Duct Cleaning Fresh Air Duct Cleaning Exhaust Duct Cleaning FCU Cleaning GermXit Gel replenishment GermXit Liquid Spray AHU Cleaning GermXit Gel replenishment GermXit Liquid Spray Every 45 days Every 90 days Every 90 days Every 2 years 21

22 APPENDIX : PHOTOS BEFORE AND AFTER 22

23 Before After Before After 23

24 Before After Before After 24

25 Before After Before After 25

26 Before After Before After 26

27 Before After Before After 27

28 Before After Before After 28

29 Before After Before After 29

30 Before After 30

31 Before After Before After Return Ducting Return Ducting Return Ducting Return Ducting Return Ducting Return Ducting 31

32 Before After Before After Return Ducting Return Ducting Return Ducting Return Ducting Return Ducting Return Ducting 32

33 Before After Before After Cleaning FCU Cleaning FCU Cleaning FCU Cleaning FCU Cleaning FCU Cleaning FCU 33

34 Cleaning FCU - Working GermXit in FCU Cleaning FCU - Working GermXit in FCU GermXit in FCU GermXit in FCU 34

35 GermXit in FCU AHU GermXit in FCU AHU AHU AHU 35

36 Before After Before After AHU AHU - Working AHU AHU - Working AHU - Working 36

37 Before After Before After Cleaning Grille Cleaning Grille Cleaning Grille Cleaning Grille Cleaning Grille Cleaning Grille 37

38 Cleaning Grille - Working Cleaning Grille - Working Cleaning Grille - Working Cleaning Grille - Working Cleaning Grille - Working Cleaning Grille - Working 38