13–314
INSTALLATION OF SPRINKLER SYSTEMS
identification number. The numbers do not identify specific characteristicss of sprinklers but can be reference characteristic referenced d in the database information compiled compiled by the listing organizations. organizations. At the plan review stage, the sprinkler identification number should be checked against such a database or the manufacturer’s literature to ensure that sprinklers are being used properly and within the limitations of their listings. Field inspections can include spot checks to ensure that the model numbers on the plans are those actually installed. A.6.2.3.1 See Table A.6.2.3.1. Table A.6.2.3.1 Nominal Sprinkler Orifice Orifice Sizes Nomin inal al KK-F Fac acto torr
Nomin inal al Ori rifi ficce Si Sizze
U.S. [gpm/ (psi)1/2]
Metric [L/min/ (bar)1/2]
in.
mm
1.4 1.9 2.8 4.2 5.6 8.0 11.2 14.0 16.8 19.6 22.4 25.2 28.0
20 27 40 60 80 115 160 200 240 280 320 360 400
1 ⁄ 4 ⁄ 16 3 ⁄ 8 7 ⁄ 16 1 ⁄ 2 17 ⁄ 32 5 ⁄ 8 3 ⁄ 4 — — — — —
6.4 8.0 10 11 12 14 16 20 — — — — —
5
A.6.2.5 Inform Information ation regarding the highest temperature temperature that can be encountered in any location in a particular installation can be obtained by use of a thermometer that will register the highestt tempera highes temperature ture encountered; encountered; it should be hung for several days in the location in question, with the plant in operatio operation. n. A.6.2.6.1 Examples of such locations locations include the following: following:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
Paper mill millss Packing houses Tanneries Alkali plants Organic fertilizer fertilizer plants plants Foundries Forgee shops Forg shops Fumigation, pickle, pickle, and vinegar works works Stables Stab les Storage battery battery rooms rooms Electroplating Electroplati ng rooms Galvanizing rooms Steam rooms of all descriptions, descriptions, including moist vapor dry kilns (14) Salt storage rooms (15) Locomotive sheds or houses houses (16) Drive Driveways ways (17) Areas exposed exposed to outside weather weather,, such as pier pierss and wharves exposed to salt air (18) Areas under under sidewalks (19) Areas around bleaching bleaching equipment in flour flour mills (20) All portions of cold storage storage buildings where a direct ammonia expansion system is used
2016 Edition
(21) Portions of any plant where where corrosive vapors prevail (22) Area over and around swimming swimming pools, chlorine chlorine storage rooms, and pool pump rooms A.6.2.6.1.2 Care should be taken in the the handling and instalinstallation of wax-coated or similar sprinklers to avoid damaging the coating. A.6.2.6.2 Paint Painting ing of sprinklers sprinklers can retar retard d the the thermal rmal response of the heat-responsive element, can interfere with the free movement of parts, and can render the sprinkler inoperative. Moreover, painting can invite the application of subsequent coatings, thus increasing the possibility of a malfunction of the sprinkler. A.6.2.6.4.2 Plastic bags should not be be used for this purpose due to the fact that shrinkage prior to development of temperatures needed to ensure sprinkler activation can interfere with proper sprinkler operation and developmen developmentt of spray patterns. The prohibition against plastic bags should include polypropylene bags commonly marketed as “cello” bags. True cellophane degrades rather than melts and, like paper, does not display shrinkage. A.6.2.7.2 The use of the wrong type of escutcheo escutcheon n with recessed or flush-type sprinklers can result in severe disruption of the spray pattern, which can destroy the effectiveness effectiveness of the sprinkler. A.6.2.9.1 A minimum of two two sprinklers of each type and temtemperature rating should be provided. A.6.2.9.6 One sprinkler wrench wrench design can be appropriate for many types of sprinklers and should not require multiple wrenches of the same design. A.6.2.9.7.1 The minimum information information in the list contained contained in the spare sprinkler cabinet should be marked with the sprinkler identification described in 6.2.2; a general description of the sprinkler, including upright, pendent, residential, ESFR, and so forth; and the quantity of sprinklers that is to be maintained in the spare sprinkler cabinet. An example of the list is shown in Figure A.6.2.9.7. A.6.2.9.7.1. 1. A.6.3.1.1.1 Extendin Extending g the underground underground pipe such as ductile iron, iro n, C-9 C-900 00 PVC PVC,, and oth other er pip pipee per permit mitted ted by Cha Chapte pterr 10, int into o a building provides working room to transition to the appropriate aboveground piping. Environme Environmental ntal conditions should be considered as outlined in 24.1.6.1.2.
Sprinklers Contained in this Cabinet General Description
Temperature Rating, F
Sprinkler Quantity Maintained
TY9128
Extended Coverage, K-25, upright
155
6
VK425
Concealed pendent residential
145
6
Sprinkler Identification, SIN
Issu Is sued ed:: 10 10/3 /3/0 /05 5
Revi Re vise sed: d:
FIGURE A.6.2.9.7.1 Sample List.
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