SOW_Wood_Stove_flue_and_duct_cleaning_YELL.pdf

140P1422Q0087 Statement of Work (SOW) Wood burning Stove and Flue Cleaning Inspections Yellowstone National

Overview:

1) Wood burning stove, flue, and duct cleaning service:

2) Dryer vent cleaning service

3) Verify each housing unit is equipped with a battery-operated carbon monoxide and smoke detector

Scope of Work and Procedure Requirements for Wood Burning Stove Systems:

The scope of work includes a ONE TIME cleaning inspection, in accordance with National Fire Protection Association NFPA 211, of all wood burning stoves, flues, and duct work in Yellowstone National Park housing units. The extent of the cleaning of wood stoves shall be one time cleaning. The date of cleaning shall be determined by review of available road openings and access to employee housing and coordinated with the park representative.

The Contractor shall be responsible for the removal of visible surface contaminants and deposits from within the wood burning stove and the exhaust system in strict accordance with these specifications.

The wood stove system includes any interior surface of the heat distribution system for conditioned spaces and/or occupied zones. This includes all wood burning stove systems from the points where the air enters the system to the points where the air is discharged from the system. The return air grilles, return air ducts.

Wood Stove System Inspection and Site Preparation Wood stove system component inspections Prior to the commencement of cleaning work, the system cleaning contractor shall perform a visual inspection of the wood burning stove and flue to determine appropriate methods, tools, and equipment required to satisfactorily complete this project. The cleanliness inspection should include the wood stove and all components relate to the wood stove for proper function, this included the in-home carbon monoxide and smoke detector.

1. Verify each housing unit is equipped with a battery-operated carbon monoxide and smoke detector

2. Annually replace the battery in the in-home carbon monoxide detector

3. Install a battery-operated carbon monoxide detector if none are present (install shall be as per manufacture specifications)

Cleanliness inspection shall be conducted without negatively impacting the indoor environment through excessive disruption of settled ash, or other debris. Damaged system components found during the inspection shall be documented and brought to the attention of the Park Service Representative.

Site Evaluation and Preparations Contractor shall conduct a site evaluation, and establish a specific, coordinated plan which details how each area of the housing unit will be protected during the various phases of the project.

Inspector Qualifications Qualified personnel should perform the cleanliness inspection to determine the need for cleaning. At minimum, they should understand wood stove system design, and experience in utilizing accepted indoor environmental sampling practices, current industry cleaning procedures, and applicable industry standards for inspection and cleaning of wood stoves.

General Cleaning Requirements (minimum)

(A) Containment Debris removed during cleaning shall be collected and precautions must be taken to ensure that debris is not otherwise dispersed outside the wood stove system during the cleaning process.

(B) Particulate Collection

Where the particulate collection equipment is exhausting inside the housing unit, HEPA filtration with 99.97% collection efficiency for 0.3-micron size (or greater) particles shall be used. When the Particulate collection equipment is exhausting outside the building, mechanical cleaning operations shall be undertaken only with particulate collection equipment in place, including adequate filtration to contain debris removed from the wood burning stove system. When the particulate collection equipment is exhausting outside the building, precautions shall be taken to locate the equipment down wind and away from all air intakes and other points of entry into the housing unit.

(C) Controlling Odors Measures shall be employed to control odors and/or mist vapors during the cleaning process.

(D) Component Cleaning Cleaning methods shall be employed such that all wood stove system components must be visibly clean as defined in applicable industry standards. Upon completion, all components must be returned to those settings recorded just prior to cleaning operations.

(E) Air-Volume Control Devices Dampers and any air-directional mechanical devices inside the system shall have their position marked prior to cleaning and, upon completion, must be restored to their marked position.

(F) Service Openings The contractor shall utilize service openings, as required for proper cleaning, at various points of the system for physical and mechanical entry, and inspection.

1. Contractor shall utilize the existing service openings already installed in the system where possible.

2. Other openings shall be created where needed and they must be created so they can be sealed in accordance with industry codes and standards.

3. Openings must not compromise the structural integrity of the system.

4. Construction techniques used in the creation of openings should conform to requirements of applicable building and fire codes, and applicable NFPA, SMACNA and industry standards.

5. Cutting service openings into flexible duct is not permitted. Flexible duct shall be disconnected at the ends as needed for proper cleaning and inspection.

6. All service openings capable of being re-opened for future inspection or remediation shall be clearly marked and shall have their location reported to the Park Representative in project report documents.

(G) Air Distribution Devices (registers, grilles & diffusers) The contractor shall clean all air distribution devices.

(H) Blowers and Exhaust Fans The contractor shall insure that supply, return, and exhaust fans and blowers are thoroughly cleaned. Areas to be cleaned include blowers, fan housings, scrolls, blades, or vanes, shafts, baffles, dampers, and drive assemblies. All visible surface contamination deposits shall be removed in accordance with industry Standards. Contractor shall:

1. Clean all internal surfaces, components.

2. Clean all related components, including vent fins.

Health and Safety:

(A) Safety Standards Cleaning contractors shall comply with applicable federal, state, and local requirements for protecting the safety of the contractor’s employees, building occupants, and the environment. In particular, all applicable standards of the Occupational Safety and Health Administration (OSHA) shall be followed when working in accordance with this specification.

(B) Occupant Safety No processes or materials shall be employed in such a manner that they will introduce additional hazards into occupied spaces.

(C) Disposal of Debris All Debris removed from the system shall be disposed off-site in accordance with applicable federal, state, and local requirements.

Mechanical Cleaning Methods:

The wood burning stove system shall be cleaned using source removal mechanical cleaning methods designed to extract contaminants from within the system and safely remove contaminants from the system. It is the contractor’s responsibility to select source removal methods that will render the system visibly clean and capable of passing cleaning verification methods and other specified tests, in accordance with all general requirements. No cleaning method, or combination of methods, shall be used which could potentially damage components of the system or negatively alter the integrity of the system.

All methods used shall incorporate the use of vacuum collection devices that are operated continuously during cleaning. A vacuum device shall be connected to the downstream end of section being cleaned through a predetermined opening. The vacuum collection device must have sufficient power to render all areas being cleaned under negative pressure, such that containment of debris and the protection of the indoor environment are assured.

All vacuum devices exhausting air inside the housing unit shall be equipped with HEPA filters (minimum efficiency), including hand-held vacuums and wet vacuums.

All vacuum devices exhausting air outside the facility shall be equipped with particulate collection including adequate filtration to contain debris removed from the system. Such devices shall exhaust in a manner that will not allow contaminants to re-enter the housing unit. Release of debris outdoors must not violate any outdoor environmental standards, codes, or regulations.

All methods require mechanical agitation devices to dislodge debris adhered to interior wood burning stove system surfaces, such that debris may be safely conveyed to vacuum collection devices. Acceptable methods will include those, which will not potentially damage the integrity of the ductwork, nor damage porous surface materials such as liners inside the ductwork or system components.

Cleaning of Catalytic Coils

1. Any cleaning method may be used which will render the heating/catalytic coil visibly clean and capable of passing cleaning verification (see applicable Industry Standards). Cleaning methods shall not cause any appreciable damage to, displacement of, inhibit heat transfer, or erosion of the coil surface and shall conform to wood stove manufacturer recommendations when available.

Cleanliness verification: Verification of wood burning stove system cleanliness will be determined after mechanical cleaning shall include a visual inspection. The wood burning stove system shall be inspected visually to ensure that no visible contaminants are present.

2. If no contaminants are evident through visual inspection, the system shall be considered clean;

however, the Park Service COR reserves the right to further verify system cleanliness through vacuum test specified in the NADCA standards. If visible contaminants are evident through visual inspection, those portions of the system where contaminants are visible shall be re-cleaned and subjected to re-inspection for cleanliness. Cleaning must restore the catalytic coil original appearance based on a thorough visual inspection

Pre-Existing Conditions:

Contractor is not responsible for problems resulting from prior inappropriate or careless cleaning techniques of others.

Post Project Report:

At the conclusion of the project, the Contractor shall provide a report to the COR indicating the following:

1. Success of the cleaning project, as verified through visual inspection analysis.

2. Areas of the system found to be damaged and/or in need of repair. (All locations)

Experience The system cleaning contractor shall submit a list of projects where they have performed system cleaning services.

Dryer Vent General Cleaning Requirements (minimum)

The scope of work includes cleaning of all dryer venting located within the boundaries of Yellowstone National Park all locations 4-Plexes and 8-plexes (see attached list Price Schedule and locations of housing units).

The Contractor shall be responsible for the removal of visible surface contaminants and deposits from within the dryer vents in strict accordance with these specifications.

(A) Containment

Debris removed during cleaning shall be collected and precautions must be taken to ensure that debris is not otherwise dispersed outside the dryer vents during the cleaning process.

(B) Particulate Collection Where the Particulate Collection Equipment is exhausting inside the building, HEPA filtration with 99.97% collection efficiency for 0.3-micron size (or greater) particles shall be used. When the particulate collection equipment is exhausting outside the building, mechanical cleaning operations shall be undertaken only with particulate collection equipment in place, including adequate filtration to contain debris removed from the from dryer vents. When the particulate collection equipment is exhausting outside the building, precautions shall be taken to locate equipment down wind and away from all air intakes and other points of entry into the building.

(C) Controlling Odors Measures shall be employed to control odors and/or mist vapors during the cleaning process.

(D) Component Cleaning Cleaning methods shall be employed such that all dryer vent components must be visibly clean as defined in applicable industry standards. Upon completion, all components must be returned to those settings recorded just prior to cleaning operations.

The contractor shall utilize the service opening, as required for proper cleaning of the dryer vents for physical and mechanical entry, and inspection.

1. Contractor shall utilize the existing service opening already installed for the dryer vents.

2. Cutting service openings into flexible duct is not permitted. Flexible duct shall be disconnected at the ends as needed for proper cleaning and inspection.

APPLICABLE STANDARDS AND PUBLICATIONS

The following current standards and publications of the issues currently in effect form a part of this specification to the extent indicated by any reference there to:

1. Underwriters’ Laboratories (UL): UL Standard 181.

2. Environmental Protection Agency (EPA): "Building Air Quality," December 1991.

Multi-level housing units may require a man lift to reach wood stove exhaust stack for cleaning

Equipment, Materials and Labor The system cleaning contractor shall possess and furnish all necessary equipment, materials, and labor to adequately perform the specified services.

1. The contractor shall assure that its employees have received safety equipment training, medical surveillance programs, individual health protection measures, and manufacturer’s product and material safety data sheets (MSDS) as required for the work by the U.S. Occupational Safety and Health Administration, and as described by this specification.

2. The contractor shall maintain a copy of all current MSDS documentation and safety certifications at the site at all times, as well as comply with all other site documentation requirements of applicable OSHA programs and this specification.