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Health & Safety Plans

Confined Space Program

Important Information

Appendicies:
A | B | C | D | E | F | G | H | I | J | K

Introduction

In accordance with ILHR 32 Subchapter VI Confined Space Standard , and the OSHA Confined Space Standard, 29 CFR 1910.146, U. W. Eau Claire has implemented a program that will minimize employee risk, identify the hazards in each space, restrict access to authorized personnel, control hazards through engineering and work practices, and test the environment to ensure the hazards remain under control.

A major discrepancy between ILHR 32 and OSHA 1910.146 , is the written permit system. At a later time, the complete permit system may be implemented. The UW-Eau Claire program includes a Level Three Confined Space entry protocol using a written permit system. Level Three procedures may be used to coordinate efforts between campus personnel and outside contractors using a similar system.

Policy

The policy at UW-Eau Claire is to limit employee work to Level One confined spaces. Our Level Two confined spaces, if identified on campus, will be reclassified to Level One by ventilation, or other engineering means, prior to entry by campus employees. If reclassification is not possible, campus policy will be to contract out such work to qualified off campus subcontractors.

Caution: Level One confined spaces identified in this document are level one only for entry for inspection or other routine work. The use of hazardous chemicals - such as paint or paint solvents - or non-routine procedures - such as welding - requires a task- and site-specific job hazard analysis and may result in reclassification of the space. This document contains information on Level Two (Appendix A) and Level Three (Appendix B) confined spaces for use and training as needed.

Management Responsibilities

  1. The University of Wisconsin-Eau Claire campus will maintain an up-to-date confined space program.
  2. The department supervisors working with confined spaces, such as Facilities Management and Voice Communications, will be responsible for the program and will be supported by UW-Eau Claire's Environmental Health and Safety office.
  3. The University of Wisconsin-Eau Claire campus will maintain a current inventory of all confined spaces (See Appendix K). They will be listed in the appropriate confined space category:
    1. Level 1 Confined Space
    2. Level 2 Confined Space
    3. Level 3 Confined Space
    4. Special Hazard Spaces

    Refer to Definitions for detailed explanations of these spaces.

  4. All confined spaces will have a posted sign at the entrance. The sign will state either "Danger Confined Space Do Not Enter," "Authorized Personnel Only," or equivalent language.

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Level One Entry Procedures

Definition: The atmosphere is within the limits specified in ILHR 32.64 (1) listed below.

  1. Lockout/tagout all energy sources to the confined space: electrical, mechanical, steam, gas. [Follow U.W. Eau Claire Lockout/Tagout Procedures ]
  2. Before entering, check the air quality of the confined space. Below are the ILHR limits:
    Contaminant Type Acceptable Range
    Oxygen 19.5%-23.5%
    Carbon Monoxide Less than 35 ppm
    Flammables Less than 10% LEL
    Hydrogen Sulfide Less than 10 ppm
  3. Put on appropriate protective clothing for working in the confined space, hard hat, gloves, protective clothing, footwear.
  4. Attach the air sampling device/monitoring device to the employee. If this device sounds an alarm, immediately exit from the confined space.
  5. Hook up the appropriate forced air ventilation equipment. The air source must be good and it must not provide contamination within the confined space.
  6. Enter the confined space and proceed with the maintenance.
  7. Continually monitor the air quality while in the confined space. Exit immediately if the alarm on the air monitoring equipment sounds! Refer to the air monitoring log.
  8. If the alarm sounds while in the confined space, report this information immediately to your supervisor and the Environmental Health and Safety office. This space automatically becomes a level two confined space.

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Training

  1. Authorized entrants should be trained to:
    1. monitor the space for oxygen, combustibility and toxicity before, during and after entry into the confined space;
    2. read the permit for a Level 3 Confined Space entry carefully and follow all guidelines and procedures listed;
    3. know space hazards, including information on the mode of exposure, inhalation or dermal absorption, signs or symptoms of exposure, and consequences of the exposure (Appendix G contains checklists which may be used to assess hazards and prepare for entry);
    4. cut off, according to campus procedures, steam, water, heat, gas, power lines, or other sources of energy;
    5. use lock-outs and tags to protect against accidental start up of equipment or energize sources while occupying the confined space;
    6. wear proper respirators, retrieval lines and harnesses if authorized for Level 2 or Level 3 entry;
    7. ventilate the confined space;
    8. prepare for and control physical hazards;
    9. check for an escape route and be ready to get out if ordered;
    10. use only safe, grounded, explosion-proof equipment;
    11. communicate regularly with attendants;
    12. exit from confined space when ordered by an authorized person, when the entrant recognizes the warning signs or symptoms of exposure, when a prohibited condition exist, or when an automated alarm is activated;
    13. alert the attendant when a prohibited condition exists or when warning signs or symptoms of exposure exist;
    14. maintain skills in CPR and First Aid. .
  2. Attendants should be trained to:
    1. read the Level 3 Confined Space Entry Permit carefully;
    2. know all emergency reporting procedures and who to call for help;
    3. keep in constant touch with the workers in the space;
    4. know what the hazards of the space are and what symptoms to look for;
    5. be prepared to order an evacuation;
    6. be aware at all times the number of workers in a confined space.
    7. be prepared to properly perform rescue duties from outside the permit space;
    8. maintain skills in CPR and First Aid.
  3. Permit authorizers and supervisors should be trained to:
    1. determine the acceptable conditions for entering a confined space;
    2. identify the potential/specific hazards and work activities involved;
    3. prepare entry permits and to identify when to terminate entry or cancel a permit if conditions are no longer appropriate;
    4. determine the type of equipment to use to test and to monitor the atmosphere while working in the confined space;
    5. determine how the workers will communicate with each other and with the attendant on the outside;
    6. determine the type of personal protective equipment to be used;
    7. determine the type of rescue procedures and equipment that will be needed if an emergency arises.

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Definitions

  1. A Confined Space is
    1. An environment which by design or construction has limited openings for entry and egress,
    2. Has unfavorable natural ventilation,
    3. Could reasonably be believed to have dangerous air contaminants or contain materials that may produce dangerous air contaminants.
    4. Is not intended for continuous human occupancy.

    Examples of confined spaces include crawl spaces, pits, boilers, bins, storage tanks, steam tunnels, wells, manholes, sewers, vaults, pipelines, ventilation and exhaust ducts.

  2. Code language implies that a regulation defined confined space must meet all four of the above criteria. To minimize employee risk the UW-Eau Claire program will use confined space procedures to enter spaces with recognized hazards similar to those posed by regulation defined spaces.
  3. A Level 1 Confined Space has an atmosphere within the limits specified by ILHR 32.64 (1), and the only source of contamination expected or likely to affect the atmosphere is the employee's presence or the employee's activities.
  4. A Level 2 Confined Space has an atmosphere where:
    1. The confined space contains contamination sources other than the employee or the employee's activities that adversely affect the atmosphere or air quality;
    2. or, at some previous time, the atmosphere was not within the limits specified in ILHR 32.64 (1);
    3. or the atmosphere is not currently within the limits specified in ILHR 33.64 (1).
  5. A Level 3 Confined Space meets the criteria for a level 2 space and
    1. contains recognized hazards requiring a written permit system (Appendix F contains a permit form),
    2. or, subcontractor coordination requires a written permit system (Appendix D contains additional information regarding subcontractor work in confined spaces).
  6. The ILHR 32.64 (1) specified air quality limits are:
    Contaminant type Acceptable range
    Oxygen 19.5% - 23.5%
    Carbon Monoxide 35 ppm
    Flammables less than 10% LEL
    Sulfur Dioxide less than 2 ppm
    Hydrogen Sulfide less than 10 ppm
    Atmospheric concentration of any substance for which OSHA has established a permissible exposure limit published in 29 CFR 1910 Subparts G or Z or any other atmospheric condition immediately dangerous to life or health.
  7. The Lower Explosive Limit (LEL) means the lower limit of flammability for a gas or vapor at ordinary ambient temperatures expressed as a percentage of the gas or vapor in air by volume.
  8. An Attendant is an individual stationed outside a confined space who monitors the authorized entrants and performs all attendant's duties assigned by the confined space entry program.
  9. An Authorized Entrant is an employee who is trained and authorized by the university to enter a confined space.
  10. Entry is considered to have occurred as soon as any part of an entrant's body breaks the plane of the opening to the confined space.
  11. A Hazardous Atmosphere is an atmosphere that may expose employees to the risk of incapacitation, impairment of ability to self-rescue or death.
  12. Immediately dangerous to life or health means any condition that poses an immediate or delayed threat to life or that would cause irreversible adverse health effects or that would interfere with an individual's ability to escape unaided from a confined space.
  13. Rescue Service means the personnel designated to rescue employees from confined spaces. (Appendix C contains additional information regarding rescue service.)

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Hazards

Possible hazards that employees could be exposed to in a confined space are:

  1. flammable gases, vapors or mists;
  2. air-borne combustibles such as dusts;
  3. hazardous chemicals above the Permissible Exposure Levels (PELs);
  4. toxic substances commonly encountered are:
    1. Carbon monoxide, a colorless odorless gas created by internal combustion. It can kill by decreasing the capability of the blood to carry oxygen.
    2. Hydrogen sulfide is a toxic gas that quickly deadens the sense of smell.
  5. Oxygen concentrations pose dangers if outside a narrow range:
    1. An oxygen deficient atmosphere contains less than 19.5% oxygen. This may not be enough oxygen to supply the employee's respiratory needs when performing physical work. Atmospheres at 19.5% and lower are immediately dangerous to life and health.
    2. Oxygen concentrations above 23.5% have the potential to be an explosive atmosphere or accelerate combustion.
    3. Oxygen deficiencies could be caused by:
      1. fire or explosion;
      2. displacement of oxygen by other materials such as methane, produced by rotting organic matter, or carbon dioxide produced by fermentation;
      3. corrosion or rust.
  6. Other hazards may include:
    1. engulfment caused by finely divided, flowable solids such as grain or coal that can collapse around a person filling or plugging the respiratory system or cause death by strangulation, constriction or crushing;
    2. poor space design. Odd shapes such as sloping sides, floors that taper to small sections, or confusing internal shapes could cause a person to become trapped and possibly cause suffocation;
    3. combustion due to fire or explosion caused by build-up of flammable vapors, gases, or dusts which can be ignited by grinding, welding, unapproved electrical equipment, metal friction, smoking, or static electricity;
    4. heat can build up quickly in a confined space and cause exhaustion or heat stroke;
    5. falls and slips in a confined space can be fatal. A person can be rapped in an area with low oxygen levels or toxic gases. Rungs, railings, and walking surfaces in damp environments are dangerous; shallow water depths could cause drowning;
    6. noise reverberates in a confined space; workers may not be able to hear important directions or warnings. Over time, permanent hearing problems could develop;
    7. mechanical hazards pose special problems in confined spaces; valves and pipes not disabled may explode; moving parts are dangerous; equipment must be locked out/tagged out before entering. UW-Eau Claire's Lockout/Tagout policy shall be followed.

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Sampling and Calibration of Air Monitoring Device

  1. No person shall enter any confined space until the air quality is determined to be satisfactory in all areas of a confined space.
  2. The atmosphere will be tested for oxygen, hydrogen sulfide, combustible gases, and any other recognized potential contaminant.
  3. The sampling device should simultaneously test for the above items.
  4. The device shall have an audible warning signal, be calibrated relative to the oxygen content of the ambient air at the time of sampling, and have a zero setting for combustible gases.
  5. The air sampling device shall be calibrated a minimum of every 7 days. A calibration log shall be maintained. A sample log can be found in Appendix J . If the calibration log is not current (within the last seven days), then the air sampling device shall be calibrated before use.
  6. An air monitoring log will be filled out every time a Level 2 or Level 3 Confined Space is entered. Appendix H contains a sample Air Monitoring Log.

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Appendix A

Level Two: Confined Space Entry

Definition: The confined space atmosphere has contamination sources other than the employee activities and the atmosphere is not within specified limits in ILHR 31.04. The standard is listed below. No employee shall enter this space unless an attendant is outside the confined space.

  1. Lockout/tagout all energy sources to the confined space: electrical, mechanical, steam, gas. [Follow UW-Eau Claire Lockout/Tagout Procedures.]
  2. Before entering, check the air quality of the confined space. Below are the ILHR limits:
    Contaminant Type Acceptable Range
    Oxygen 19.5%-23.5%
    Carbon Monoxide Less than 35 ppm
    Flammables Less than 10% LEL
    Hydrogen Sulfide Less than 10 ppm
  3. Put on appropriate protective clothing for working in the confined space, hard hat, gloves, footwear.
    • If the employee is making a vertical entrance they shall be equipped with a full body harness, waist belt, shoulder straps, leg straps, and "D"-rings. The life line shall be attached to a winch drum on a tripod support.
    • If the employee is making a horizontal entrance then they shall wear a full body harness and be equipped with a SCBA or an air line respirator. If an airline respirator is used, the unit shall be equipped with a five minute escape air tank.
  4. Put on the appropriate respirator for the confined space atmosphere. [Refer to UW-Eau Claire Respirator Program.]
  5. Attach the air sampling monitoring device to the employee.
  6. Maintain communication with the outside attendant. An intrinsically safe portable communication device is required if worker is out of attendant's view.
  7. Hook up the appropriate forced air ventilation equipment and turn it on. Do not enter the space until forced ventilation has eliminated any hazardous atmosphere. Repeat air sampling readings. The air supply for the forced air ventilation shall be from a clean source.
  8. Enter the confined space and proceed with the maintenance. The forced air ventilation shall continue until all employees have left the confined space.
  9. Continually monitor the air quality. If the alarm to sounds, immediately exit from the confined space and report this information immediately to your supervisor and the Environmental Health and Safety office.
  10. The outside attendant's job is to maintain communication with the employees, know the hazards of the space, what symptoms to look for, and know emergency procedures.

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Appendix B

Level Three Confined Space Entry

Definition: The confined space atmosphere has contamination sources other than the employee activities and the atmosphere is not within specified limits in ILHR 31.04. The level three confined space entry permit satisfies the OSHA regulation 29 CFR 1910.146. No employee shall enter this space unless one attendant is outside the confined space. The permit must be posted outside the confined space.

  1. Obtain a confined space entry permit from the department supervisor. This permit will state the type of hazards, precautionary measures, and current confined space air sample results. Follow all permit requirements before entering the confined space.
  2. Lockout/tagout all energy sources to the confined space: electrical, mechanical, steam, gas. [Follow UW-Eau Claire Lockout/Tagout Procedures.] Verify that the space has been isolated from outside hazards.
  3. Put on appropriate protective clothing for working in the confined space, hard hat, gloves, footwear.
    *If the employee is making a vertical entrance, they shall be equipped with a full body harness and a life line attached to a winch drum on a tripod support.
    *If the employee is making a horizontal entrance then they shall wear a full body harness and be equipped with a SCBA or an airline respirator. If an airline respirator is used, the unit shall be equipped with an escape air tank.
  4. Put on the appropriate respirator for the confined space atmosphere. [Refer to UW-Eau Claire Respirator Program.]
  5. All entrants and attendants will sign in and out on the confined space entry permit.
  6. Attach the air monitoring device to the employee.
  7. Maintain communication with the outside attendant. Intrinsically safe portable communication device is required if worker is out of attendant's view.
  8. Hook up the appropriate forced air ventilation equipment and turn it on. Repeat air sample tests and record results. The air supply for the forced air ventilation shall be from a clean source and remain on until all employees have exited the confined space.
  9. Enter the confined space and proceed with maintenance.
  10. Continually monitor the air quality. If the alarm to sounds, immediately exit from the confined space and immediately report this information to your supervisor and the Environmental Health and Safety office. The level 3 confined space permit becomes void.
  11. The outside attendant's job is to maintain communication with the employees, know the hazards of the space, what symptoms to look for, and contact emergency help when needed.
  12. After a level 3 confined space entry has been completed, the person testing the air samples will sign the permit and entrants will indicate if there were problems during the entry into the confined space. The department supervisor will cancel the permit and keep it in records for the yearly confined space program review.

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Appendix C

Rescue

Current campus policy is to use the City of Eau Claires Fire Department as an off-site rescue service. Familiarization tours and practice rescue sessions will be scheduled on a regular basis to:

  1. Inform the Fire Department of the hazards they may confront when called on to perform rescue on the UW-Eau Claire campus; and
  2. Provide the rescue service with access to all confined spaces from which rescue may be necessary so that the rescue service can develop appropriate rescue plans and practice rescue operations.

If the UW-Eau Claire campus chooses to establish a campus rescue team, these requirements would apply: All Department supervisors shall keep a current list `of rescuers and update this list every six months or when a change takes place on the rescue team. A copy of the list will be on file with the department of Environmental Health and Safety.

UW-Eau Claire shall ensure that each member of the rescue service is provided with, and trained to use the personal protective equipment and rescue equipment necessary for making rescues from permit spaces. Each member of the rescue service shall:

  1. Be trained to perform the assigned rescue duties.
  2. Receive the training required of authorized entrants.
  3. Practice making confined space rescues at last once every 12 months, by means of simulated rescue operations in which they remove dummies, mannequins, or actual persons from the actual confined spaces or from representative permit spaces.
  4. Be trained in basic first-aid and in CPR. All members of the rescue service shall hold current certifications.
  5. To facilitate non-entry rescue, retrieval systems shall be used whenever an authorized entrant enters a Level 2 or 3 confined space, unless the retrieval equipment would increase the overall risk of entry or would not contribute to the rescue of the entrant.
  6. If an injured entrant is exposed to substances for which a MSDS or other similar written information is available, this information shall be kept at the work site and given to the medical facility treating the exposed entrant.

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Appendix D

Outside Contractors

When UW-Eau Claire arranges to have employees of another employer, contractor, perform work that involves confined space entry, UW-Eau Claire Facilities Management shall:

  1. Inform the contractor that the workplace contains confined spaces and that entry is allowed only through compliance with a confined space program;
  2. Apprise the contractor of any precautions or procedures that have been implemented for the protection of employees in or near confined spaces where contractor personnel will be working;
  3. Coordinate entry operations with the contractor, when both U.W. Eau Claire and outside contractor personnel will be working in or near confined spaces;
  4. Debrief the contractor at the conclusion of the entry operations regarding the confined space program. This will include information regarding any hazards confronted or created in confined spaces during entry operations.
  5. In addition to complying with the confined space requirements, each outside contractor who is retained to perform the confined space entry shall:
    1. Obtain any available information regarding confined space hazards and entry operations from U.W. Eau Claire;
    2. Coordinate entry operations with U.W. Eau Claire, when both host employer and contractor personnel will be working in or near confined spaces;
    3. Inform U.W. Eau Claire of the confined space program that the contractor will follow and of any hazards confronted or created in the confined space, either through a debriefing or during the entry operation.
    4. Any outside employee, working on the UW-Eau Claire campus, must abide by the UW-Eau Claire Confined Space Program or their employer's equivalent program.

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Appendix E

Air Monitoring Log

Substance Monitored Acceptable Result Result Result Result Result
__Oxygen 19.5-23.5%          
__Flammables < 10% LEL          
__Carbon Monoxide <35 ppm          
__Sulfur Dioxide <2 ppm          
__Hydrogen Sulfide <10 ppm          
__Toxics (Specify) < PEL / TLV          
__Toxics (Specify) < PEL / TLV          
__Toxics (Specify) < PEL / TLV          
__Toxics (Specify) < PEL / TLV          
Date: Time:          
  Air tester initials:          

I,__________________________________, certify that this space does not contain any hazards as of the date of ___________________________. This certificate shall be to be available to all employees who enter the space. One copy will be given to the supervisor. One copy to the department manager and one copy will be on file in the office of Environmental Health and Safety.

Signature:____________________________________________________
Date:____________________________________________________

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Appendix F

Written Permit

LOCATION/DESCRIPTION OF CONFINED SPACE: __________ PERMIT EXPIRATION DATE:_____
  PERMIT EXPIRATION TIME: _____
HAZARDS EXPECTED (CHECK) REQUIREMENTS
___Oxygen deficiency ___Respiratory protection (specify):
___Flammable vapors or gases ___Protective clothing (specify):
___Oxygen enrichment ___Lifeline and escape harness
___Toxic air contaminants ___Tripod
___Corrosive materials ___Fire Extinguishers
___Engulfment ___Lighting appropriate for conditions
___Mechanical equipment ___Non-sparking tools
___Electrical shock ___Continuous air monitoring for:
___Other (specify): ___Continuous ventilation with fresh air
___Other (specify): ___Other (specify):

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Appendix G

Level 3 Entry Preparation

PREPARATION FOR ENTRY AUTHORIZED ENTRANTS AUTHORIZED ATTENDANTS
__Affected departments notified of service interruption    
__Tank drained or contents of space removed    
__Space isolated    
__Energy sources locked out    
__Stored energy relieved (Zero Energy State)    
__Hot work permit obtained    
__Area around confined space secured    
__Space atmosphere tested   ENTRY SUPERVISORS
__Space purged with fresh air    
__Air monitoring equipment available and calibrated    
__Employees briefed on hazards    
__Communication with entrants established    
__Rescue Service alerted and available    

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Appendix H

Entry Air Test Log

ENTRY AIR TEST WITHIN CONFINED SPACE
TEST ACCEPTABLE RESULT TEST ACCEPTABLE RESULT
__Oxygen 19.5-23.5% __Sulfur Dioxide < 2 ppm
__Flammables < 10% LEL __Toxic (specify) < PEL\TLV
__Carbon Monoxide < 35 ppm __Toxic (specify) < PEL\TLV
__Hydrogen Sulfide < 10 ppm __Toxic (specify) < PEL\TLV
Air Test Done By: Date: Time:

Entry Authorization (To be completed by the Entry Supervisor):
I certify that the authorized entrants have been trained specifically for this confined space entry.

DATE: ___________________ TIME: ___________________
NAME (PRINT)________________________________________
SIGNATURE___________________________________________
NOTE ANY PROBLEMS ENCOUNTERED DURING ENTRY:  
 
 

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Appendix I

Level Three Confined Space Entrant Log

Entrant Name: ___________________________________
Time In: _________________________
Time Out: ________________________
Time In: _________________________
Time Out: _________________________

ATTENDANT SUPERVISOR LOG

ATTENDANT'S NAME: _______________________________________
ON DUTY: ________________________________________
OFF DUTY: ________________________________________
ENTRANT SUPERVISOR'S NAME: _____________________________________
ON DUTY
OFF DUTY

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Appendix J

Calibration Log for Air Sampling Units

DATE:
GAS TYPE:
INITIAL READING:
FINAL READING:
DIFFERENCE

CALIBRATION PERSON:

  • COMBUSTIBLE (LEL):
  • TOXIC (ppm):
  • OXYGEN (%):
  • COMBUSTIBLE (LEL):
  • TOXIC (ppm):
  • OXYGEN (%):
  • COMBUSTIBLE (LEL):
  • TOXIC (ppm):
  • OXYGEN (%):
  • COMBUSTIBLE (LEL):
  • TOXIC (ppm):
  • OXYGEN (%):
  • COMBUSTIBLE (LEL):
  • TOXIC (ppm):
  • OXYGEN (%):

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Appendix K

Confined Space Inventory

Important: All the inventoried confined spaces listed below are assigned to specific levels based on the assumption of routine inspection and work normally done in the particular space. Unusual or non-routine work requires a job hazard analysis which may result in a change of level or increase in personal protective equipment. Activities in confined spaces such as painting or use of materials containing solvents, welding, or asbestos remediation present unique hazards which must be addressed on a case by case basis prior to beginning work.

Level 1 Confined Spaces:

  • Athletic/Recreation Fields, North Storage/SE of building (manhole)
  • Crest Wellness Center, 124,215 (ceiling)
  • Davies Center, 1,123/133, 139, 350
  • Fine Arts Center, 3 (bottom of stair case), 145, 163
  • Governors Hall, Dumbwaiter (elevator shafts) one on each wing
  • Heating Plant Boilers 1, 2, & 3 mud drums, steam drum, fire box, boilers 1 & 2 back passes, boiler 1, 2 and elevator coal hoppers, bunker hoppers north/center and south, UWEC and SHH condensate tanks, D.A. Tank, ash silo, #1 & 2 softeners, and #1 & 2 filters
  • Hibbard Humanities Hall, 115
  • Human Sciences & Services, NE corner of building outside of 1
  • K. Tomas Hall, 2/14 or 16
  • Kjer Theater, 235A Brewer Hall
  • L.E. Phillips Hall, roof hatches (4)
  • Library, 1153, 1158, 1150
  • McPhee PE Center, 202A entry to 304 (ladder & hatch), 301 (1 & h)
  • Schnieder, 112?
  • Schofield hall, roof hatches (4)
  • Sutherland Hall, 48, 29, 3 (hallway entry covered w/ carpet)
  • Zorn Arena, crawl space in basement (4 entries)

Special Hazard Spaces Requiring Some confined Space Procedures:

  • Electrical Pit, Allied Health Building, ____ Corner, first floor
  • Mechanical Room subject to freon

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