Generator Stack maintenance Scope of work.pdf

SCOPE OF WORK

1. PROJECT DATA:

TITLE: Generator Exhaust Stacks

BUILDING/FACILITY: Edith Nourse Rogers Memorial Veterans Hospital

JOB ORDER CONTRACT NUMBER: TBA

PROJECT NO: 518-23-344 Generator Exhaust Stacks

CONTRACTOR: TBA

DURATION: 4 weeks

PROJECT TYPE: Construction

2. GENERAL SCOPE:

Installation of exhaust stacks on generators D-19 and WT-1. The new exhaust stacks shall meet all VA and Massachusetts DEP requirements.

3. DETAILED REQUIREMENTS:

Bedford VAMC requires that generator exhaust stacks be installed on Generators D-19(located outside building 19 ) and WT-1 ( located at the water tower )

A. Exhaust stacks will be a minimum of 5 feet in height measured from the top of the generator or enclosure, whichever is lower.

- 310 CMR 7.26(43)(d)3b. (b. Engines and turbines burning liquid fuel and with a rated power output of less than 300 kw shall be equipped with an exhaust stack with a minimum stack height of five feet above the rooftop or the engine or turbine enclosure, whichever is lower.)

- D-19 Generator exhaust stack shall be five feet above the adjacent building roof line.

B. Exhaust stacks will be made of stainless steel, and covered by a flap cap style stack cover, designed to allow the unimpeded vertical exhaust of emissions.

- Exhaust stacks will have gravity flapper vents to prevent ingress of water in exhaust piping.

- Black steel pipe, ASTM A-53 standard weight with welded fittings.

C. Horizontal exhaust runs shall be sloped to provide proper drainage to drain ¼ inch for every 1 foot.

- The horizontal spanning section shall be schedule 40 stainless steels.

D. All required structural support for the exhaust stack shall be provided by the contractor.

- Spring type hangers where required, as specified in Section 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT, shall support the pipe.

E. Drain shall be connected to exterior exhaust low point with socket welded fitting.

Extend to 1’ – 0” above grade.

- Condensate drain at muffler shall be made with schedule 40 black steel pipe through a petcock.

F. 310 CMR 726(43)(d)3a. (a. All engines or turbines shall utilize an exhaust stack that discharges so as to not cause a condition of air pollution (310 CMR 7.01(1)). Exhaust stacks shall be configured to discharge the combustion gases vertically and shall not be equipped with any part or device that restricts the vertical exhaust flow of the emitted combustion gases, including but not limited to, rain protection devices such as “shanty caps” and “egg beaters”. Any emission impacts exhaust stacks upon sensitive receptors such as people, windows and doors that open, and building fresh air intakes shall be minimized by employing good air pollution control engineering practices. Such practices include without limitation: i. Avoiding locations that may be subject to downwash of the exhaust; and ii. installing stack(s) of sufficient height in locations that will prevent and minimize flue gas impacts upon sensitive receptors.)

G. Submittals shall be provided to the VA for approval for all material and equipment prior to installation.

- Refer to VA specification section 26 32 12 Engine Generators for VA requirements.

4. General Requirement:

• Contractor shall meet all VA requirements per the project drawings, project specification and original scope of work.

• All work, material, and workmanship to be furnished shall conform to all applicable local and national standards, VA SOPs, industry recommended practices and safety codes, to the requirements and test procedures of the Massachusetts state building code. The VA shall be notified of any changes before work is started. Contractor to obtain all notifications and approvals required before starting work such as ILSM and ICRA and obtain approvals upon completion as required.

• If necessary, any shutdown of utilities shall not take place until notification and approval has taken place with the end user and the Engineering Shop Main Supervisor and Trade Supervisor, and written approval is received from the COR.

• If utilities are damaged, Contractor, at their own expense, shall immediately restore to service and repair any damage caused by Contractor's workmen; to existing building, piping and conduits, wires, cables, etc., of utility services or of fire protection systems and communications systems (including telephone) which are not scheduled for discontinuance or abandonment.

• The Contractor shall thoroughly review the construction documents and site conditions and notify the VA of any discrepancies there-in or with the documents or/and existing conditions.

Notification of discrepancies or construction complexities that may impact construction, cost or aesthetics is to be made before an agreement is made on costs. It is the obligation of the contractor to verify existing conditions including overall dimensions, centerline of fixtures, material, equipment, fixture, hardware type, sizes, and number to be used.

• All construction means, methods, sequences, scheduling, procedures, and safety precautions are the responsibility of the contractor/builder. It is understood that adequate numbers of skilled workmen, who are thoroughly familiar with the methods necessary for execution of work shall be employed.

• Contractor shall provide and is solely responsible for public and employee protection as necessary and required by the codes, ordinances and regulations of governmental agencies having jurisdiction at the project site. Contractor must submit a safety plan.

• Employees of General Contractor and their subcontractors shall comply with all VA security management programs and direction of the VA police. The employees will report to the Engineering Department with government issued picture identification and receive a badge for the duration of their time working at the VA. The employees will be restricted to buildings and areas required for their work and will refrain from entering other areas and restricted access spaces. They shall not enter the project site without appropriate badges.

They may also be subject to inspection of their personal effects when entering or leaving the site.

• Any incidents including but not limited to unplanned disruption of utilities, flooding or on-site work accidents shall be reported to the COR as soon as possible.

• No photography of VA premises, residents, patients, or staff is allowed without permission of the Contracting Officer or COR.

• Contractors and subcontractors to comply with VA requirements for site/work rules, construction work time, dumpster and equipment use, location and storage. Location of all storage, equipment and supplies shall be reviewed and approved by the COR. All debris must be disposed of legally and as a part of the work. Site to be kept free of debris at all times and broom cleaned at the end of the day.

• Use of common areas in order to get to work area from the exterior shall be coordinated with the COR for approval. The safety and protection plan shall be reviewed with the COR.

Provide the maximum protection of surfaces to the extent possible with the understanding that protection may need to be installed and removed as needed and on a daily basis as required by the COR. Protect areas at all times in accordance with Interim Life Safety Measures and Infection Control Risk Assessment. These forms shall be filled out and provided to the Safety Department & COR and posted on site.

• All Contractor vehicles shall be parked in a designated parking space or construction yard.

Activity shall be limited and allow for the continued and safe ongoing operations of the medical center.

• Contractor to provide for protection of existing materials, buildings and equipment where work is to be done, materials handled, and equipment moved or relocated. The Contractor shall protect from damage all existing improvements and utilities at or near the work site and on adjacent property of a third party. The Contractor shall repair any damage to those facilities, including those that are the property of a third party, resulting from failure to comply with the requirements of this contract or failure to exercise reasonable care in performing the work. If the Contractor fails or refuses to repair the damage promptly, the Contracting Officer may have the necessary work performed and charge the cost to the Contractor.

• Remove, cut, alter, replace, patch and repair existing work as necessary to install new work.

Except as otherwise shown or specified, do not cut, alter or remove any structural work, and do not disturb any ducts, plumbing, steam, gas, or electric work without approval of the COR.

Existing work to be altered or extended and that is found to be defective in any way, shall be reported to the COR before it is disturbed. Materials and workmanship used in restoring work, shall conform in type and quality to that of original existing construction, except as otherwise shown or specified. Upon completion of contract, deliver work complete and undamaged. Existing work (walls, ceilings, partitions, floors, mechanical and electrical work, lawns, paving, roads, walks, etc.) disturbed or removed as a result of performing required new work, shall be patched, repaired, reinstalled, or replaced with new work, and refinished and left in as good condition as existed before commencing work.

• The Contractor shall keep a record set of drawings, specifications, sketches, etc. on site, clearly labeled. The drawings will be marked with any changes and as-built conditions.

• Contractor to provide products as specified with manufacturers named when noted. Pricing shall be based on specified item. Substitutions can be offered as a deduct alternate if it provides a cost savings. Contractor must obtain written approval for substitution.

• Contractor to provide a construction schedule that includes start & completion dates, dependencies, dates for approvals, mobilization, and work by individual trades, inspections, substantial completion, move in and close out. Schedule to be submitted within 5 business days of project approval and updated on a regular basis through-out construction.

• The Medical Center is a 24/7 facility with multiple end users. The Contractor is required to work directly with the COR in Engineering. Any changes in the schedule or coordination required with the end user shall be facilitated by the COR. Contractors and their subs shall work with the COR and end user main point of contact only. Details within the framework may be discussed directly with the end user point of contact with prior understanding of the COR. COR must be copied on all correspondences.

• Requests for information (RFI) must be submitted in writing to the VA.

• Change orders shall be presented to the VA for review and approval. No work shall take place before prior written approval.

• Contractor/sub-contractors shall warrant work performed for a period of one year from the date of final acceptance.

• Contractor to review all submittals (including those from subcontractors) and verify accuracy of contents, including material field dimensions, adjacent construction, conformance with the specified environmental and job conditions, coordination with other work and the contract documents. Submittals shall be stamped to signify that it has been reviewed by the Contractor as noted above and sent to the VA for review and approval. Provide samples of all finish materials.

• Near the completion of the work, the COR shall walk through the space with the Contractor and generate a list of deficient/incomplete items. A schedule of completion of deficient items will be provided by the Contractor. At final completion of the work, the Contractor shall review the work with the COR and both parties shall sign off in agreement on the completed items.

5. SPECIFIC REQUIREMENTS:

SPECIFICATIONS:

Deviations from VA Specifications are the authority of the VA COR in conjunction with the Contracting Officer.

SCHEDULE:

Contractor is required to provide a project schedule based on the proposed timeline showing activity and phasing as required. Activity shall include procurement, work as noted in the SOW, inspection and acceptance and ordering of material. The Contractor shall thoroughly survey existing conditions and determine requirements to perform work.

For detailed Schedule requirements refer to Project specifications section