1520 80TH ST SW 2018-01-02 MF Import

l7 H �H rn H .< A H� 0yH b7 O� ON 0.g r Z H �3 HH gCA 0 0❑En bi HOEn Apr. 17 'PO April. 17, 1990. Jack Giddenr., Blue Streak Finishers Ltd. p,0. Box 1796 Everett, WA 98206 lie: chemical Characteristics and Fire Concerns for New Facility peer Mr. Giddens, i T'ha purpose of this letter is to outline the characteristics of the chemicals used xiazyrfleldfacility expertlsethey is matalrelate finishing pprocess on concerns. My pm systems design and pollution control. While fire protection systems are not my primary field of expertise, I am :amiliar with them with respect to the design and 'Dporation of metal finf.vhing facilities. There are three main chemical concerns. They are 1> the concentrated oxidzers and acids such as chromic acid salts, nitric scid and sulfuric acid, 2) the open process tanks that include dilute solutions of caus- tics and acids r.nd 3> the flammable chemicals used in the painting operations,. Each of these represent different fire and related environ- mental protection concerns. The large process tanks are dilute solutions• that do not pose a signifi- cant problem with respect to water addition, reactivity, gas/vapor or duat generation. Water, is commonly added to these tanks to make up for evaporation. Higher temperature Lanka are ventilated at the source and by increased local area ventilation. The chemical volume is in the thousands of gallons but the main concern in this area is containment of the process and sprinkler liquids rather than a fire protection hazard itself. 'rhis area should be covered with a dry or empty sprinkler system with the water to be remotely turned on and off. The goal is to prevent chemical laden run off from leaving the tank pit. To further this goal, the tank pit area should have a perimeter berm to prevent other area's sprinkler water from running into thn tank pi.t. cNG.vltc-eL -�. Th� oxidizer/ncid storage requirements are minimal. The area would be lees then a 10 foot square room. The construction should be concrete bloc' and metal roof. John Whitaker, Everett Fire Department recommendr, 4 hour protection. Because this, room should be ventilated, a dry powder fire protection system senors most. appropriate. T believe small packaged systems can be easily installed on the room. The painting and -flammable organic storage arons have well defined fire protection requirements. I perceive that these areas have been recon- ciled by the City. If there are any further questions, please call. sincerely, Advanced Chemical Technologies Inc. '3�.n� C�CuPQrc�Y By: Gregory R. Alinn, P.E. PO BOX 21 • REDMOND. WA 90070.0021 • )206) 800 1004 1 B`AX) 008.8928