2012/07/25 Council Agenda Packet

9 EXHIBIT A SCOPE OF WORK Background The City of Everett has had an Arc Flash Study performed for the electrical system at their Water Filtration Plant (WFP)in Sultan,Wa.The study was performed by Power Systems Inc and is dated 3-21-2011. The Arc Flash Study identifies the level of energy released in the event of an electrical fault(arc flash incident)for each piece of electrical power distribution equipment at the WFP and the corresponding level of Personal Protection Equipment(PPE) required when working with that equipment when energized. Certain pieces of electrical equipment have been identified with an arc flash Category 3 or higher. There are 36 items Category 3 or higher(including those labeled "dangerous"). The calculations for the Hazard/Risk Category selections are consistent with the latest Table 130.7(C)(15)(a)for NFPA 70E. This project will look at those pieces of electrical equipment identified in the Arc Flash Study with category 3 and higher levels and the associated potential alterations required to reduce the arc flash category to category 2 or less. The backup data,produced by Power Studies Inc in SKM software for the Arc Flash Study,will be required as a prerequisite to implement this project. Scope of Work TASK 1—Site Verification(of Electrical Equipment Available Versus Rated Short Circuit Current) For each equipment identified in the Arc Flash Study verify that the fault rating of the equipment is capable of handling the fault current available at that equipment. Includes two full days on site to verify nameplate data and arc flash study findings,assess the condition of the equipment and verify the current configuration or undocumented change of the equipment. Submittal Task 1—Listing of each equipment that has an Arc Flash Category of 3 or higher.The listing will include available fault current(per the Arc Flash Study)and the rated fault current(per the nameplate on the equipment). Clarifications for the NFPA rules and regulations that apply and why they apply will be provided. Any changes to the regulation requirements for the arc flash labels and PPE equipment that has changed since the Arc Flash Study, will be identified. 32 hours is estimated for Task 1 (including field time and preparation of submittal). TASK 2—Corrective Action Options For each equipment on the list that is Category 3 or higher,identify the options available to reduce the Category to 2 or less. The following will be considered: age,reliability,condition,estimated replacement cost,standard operating - procedures,special conditions,practicalities of implementing option,and plant input. . Potential corrective actions to be considered or identified for each equipment Category 3 or higher: 1) Modification to Standard Operating Procedure(ex:equipment may only be worked on in a de-energized state) 2) Modification or creation of engineering design standard(ex:not practical to modify existing equipment to change hazard category,however creation of an engineering design standard such that future installations are at Category 2 or lower) 3) Adjustment to or additional protection(ex:circuit breaker setting,adding fuses to reduce available fault, etc.) 4) Modify Equipment(ex:provide interlock to prevent a certain action) 5) Replace Equipment(ex:equipment is old and in poor condition) For each corrective action option provide an estimated replacement cost. Submittal Task 2—Identification of all specific potential corrective actions for each equipment of listing of Task 1 submittal(with a detailed description)for each applicable option listed above,and an estimated replacement cost for each option. 130 hours is estimated for Task 2. Page 11 • (Form Approved by City Attorney's Office January 7,2010) 268 •