section3- fm200 sample design.pdf

Section 3 Sample Design

FIRESCAN

FIRESCAN - SAMPLE DESIGN

U.L. EX4906 Industrial FM-200 Systems Section 3 - Page: 1 of 16 Manual P/N: 630-202 Revision No. 1 Revision Date: June, 2001

3.0 SAMPLE DESIGN This section is intended to illustrate a step by step procedure for designing a Firescan FM-200 system. The sample system will be designed to comply with the guidelines and limitations discussed in the previous sections.

For detailed instructions, consult HFC -227ea Engineered System Flow Calculation Program manual for the use and operation of the program.

The following example consists of a computer room, U.P.S. room and operations room with a common sub -floor.

3.1 DETERMINE HAZARD VOLUME The first step is to determine the hazard area and volume for each enclosure involved. Refer to Figure 3.1.1 for details.

U.S. Values Metric Values Computer Rm: 29.0 x 33.0 = 957 sf x 9.0 = 8613.0 cf 5.0 x 15.0 = 75 sf x 9.0 = 675.0 cf

9288.0 cf UPS Room 10.00 x 15.0= 150 sf x 9.0 = 1350.0 cf Operations Room: 14.0 x 15.0 = 210 sf x 9.0 = 1890.0 cf Sub-Floor: 29.0 x 48.0 = 1393 sf x 1.25 = 1740.0cf

8.84 x 10.06 = 88.93m2 x 2.743 = 243.86m3 1.52 x 4.57 = 6.95m2 x 2.743 = 19.11m3 262.97m3 3.05 x 4.57 = 13.94m2 x 2.743 = 38.22m3 4.27 x 4.57 = 19.51m2 x 2.743 = 53.51m3 9.33m2 x 0.381 = 49.27m3

FIGURE 3.1.1



3.2 CALCULATE AGENT REQUIRED The minimum design concentration bas been adjusted to 7.2% due to multiple hazards being protected from a common agent supply and for ease of demonstration. The minimum expected storage temperature of the container in this example is 70?F (21?C).

English Metric

Computer Room / 8613.0 Computer Room / 243.9m 8613 7.2 243.89 7.2

W = 2.2075 X (100 7.2) = 302.9 lbs W = .13781 X (100 7.2) = 137.4 kg

UPS Room / 1350.0 cf: UPS Room / 38.23m 1350 7.2 38.23 7.2 W = 2.2075 X (100 7.2) = 47.5 lbs W = .13781 X (100 7.2) = 21.5 kg

Operation Room / 2565.0 cf Operation Room / 72.63m 2565 7.2 72.63 7.2 W =

2.2075 X

(100 7.2) = 90.3 lbs W =

.13781 X

(100 7.2) = 41.0 kg

Sub-Floor / 1740.0cf Sub-Floor / 49.27m 1740 7.2 49.27 7.2

W = 2.2075 X (100 7.2) = 61.3 lbs W = .13781 X (100 7.2) = 27.8 kg

3.2.1 DETERMINE CONCENTRATION AT MAXIMUM TEMPERATURE

The next step is to check the concentration level, at the maximum temperature that is anticipated within the entire hazard enclosures being protected, in order to verify the NOAEL level has not been exceeded. (Refer to Section 2.2.) For this example, we are utilizing a maximum temperature of 90?F.

English Metric

Computer Room 100 (302.0 x 2.2994) C= 8613 + (302.0 x 2.2994) = 7.47%

100 (137.4 x 0.14355) C= 243.89 + (137.4 x 0.14355) = 7.47%

UPS Room: 100 (47.5 x 2.2994) C= 8613 + (47.5 x 2.2994) = 7.48%

100 (21.5 x 0.14355) C= 38.23 + (21.5 x 0.14355) = 7.48%

Oper. Room

100 (67 x 2.2994) C= 1890 + (67 x 2.2994) = 7.48%

100 (41 x 0.14355) C= 72.63 + (41 x 0.14355) = 7.48%

Sub-Floor

100 (62 x 2.2994) C= 1740 + (62 x 2.2994) = 7.48%

100 (27.8 x 0.14355) C= 49.27 + (27.8 x 0.14355) = 7.49%

3.3 ESTABLISH SYSTEM CONCEPT This system has four areas that need fire protection each with a different amount of agent for each enclosure and different nozzle requirements. Of the three types of systems that we can apply to these hazard areas, the most flexible is the unbalanced system.

3.3.1 CONTAINER SELECTION This system requires a total of 502 lbs. (228 kg) of FM-200 to protect all four-hazard areas, which allows us to utilize a common agent supply. Refer to Table 2.4.2 for the container selections available. Container size = 650 lb. (295 kg0 with a 502 lb. (228 kg) fill weight 3.3.2 NOZZLES REQUIRED Step 1: Determine the correct number and size of nozzle9s) required for each hazard area and

calculate the nozzle flow rate required to discharge the system in a maximum of 10 seconds.



Computer Room = 302.9 lbs./(137.4 kg) = 30.3 lbs. (13.7 kg)/sec ? 2 = 15.15 lbs. (6.85kg)/sec 10 seconds Use 2 nozzles to get the flow rate under 20 lbs.

(9kg)/sec UPS Room = 47.5 lbs./(21.5 kg) = 4.75 lbs. (2.15 kg)/second 10 seconds Use 1 nozzle Operations Room = 90.3 lbs./41 kg) = 9.03 lbs. (4.1 kg)/second 10 seconds Use 1 nozzle Sub-Floor = 61.3 lbs./(27.8 kg) = 6.13 lbs. (2.78 kg)/sec ? =3.07 lbs. (1.39 kg)/sec 10 seconds Use 2 nozzles due to area coverage Step 2: Determine the nozzle sizes based on the minimum and maximum pipeline flow rate and

from the flow rate established in Step 1. Computer Room = 15.15 lbs. (6.85 kg) /second Use (2) 1-1/2 (32 mm) nozzles UPS Room = 4.75 lbs. 92.15 kg) / second Use (1) 1 (25mm) nozzle Operations Room = 9.03 lbs. (4.1 kg) / second Use (1) 1 (25mm) nozzle Sub Floor = 3.08 lbs. 91.39 kg) / second Use (2) (20mm) nozzles Step 3: Locate the nozzle(s) on a scaled plan view of the hazard areas being protected. This will

allow you to check the area coverage of each nozzle being used. This will also determine if you use 180? or 360? nozzles, or a combination of the two.



FIGURE 3.3.2-B

FIGURE 3.3.2-A



3.4 LAYOUT PIPING NETWORK Step 1: Layout pipe network and container location(s) on a scaled plan view. While many

methods of pipe routing may exist in any given system, it is best to supply nozzles, or group of nozzles, from central points along the trunk line to avoid high degrees of piping imbalance.

FIGURE 3.4.1-B

FIGURE 3.4.1-A



Step 2: Layout a piping isometric to show all elevation changes, fittings, pipe sizes and lengths. (Refer to figure 3.4-C) the sections of pipe should be numbered 0-1,2 -3,3-4, etc. A new section of pipe begins whenever there is a tee split or pipe size change. All elevation changes must be accounted for by assigning a number, or node point, at the bottom and top of the pipe section. Correct numbering of pipe sections is essential for proper data entry into Firescans HFC-227ea Engineered Flow Calculation Program. Pipe sizes will be based on the flow rate for each section and selected from Table 2.6.3. Check the piping network for tee split ratios, tee orientation, minimum piping distances, proper nozzle screen quantity and location, etc.

IMPORTANT: Your final design must be checked by using Firescans HFC-227ea Engineered System Flow Calculation program before installation starts. When using the Isometric input portion of the flow calculation program, it is not necessary to assign Node points to the piping isometric as the isometric input will automatically assign node point numbers as you draw the piping system.

The following pages are a copy of the Firescans HFC -227ea Engineered System Flow Calculation program printout showing the inputs and outputs of the program

FIGURE 3.4.1-C



Copyright Hughes Associates, Inc. HFC-227ea FlowCalc

UL: Ex4906 Project: Computer Room

File Name C:\Engineer\Calculation.FLC Calculation Date/Time: August 7, 2001, 04:39:53PM

PROJECT REPORT

------- Distributor------

Name : Williamson & King Pte Ltd Address : 81 Loyang Way : Loyang Industrial Estate : Singapore : 508767 Phone :

--------Customer----- Name : ABC Electronics Address ; 1199 Jefferson Avenue : P.O. Box 610 : Blue Springs, MO : 64015 Phone : (123) 555-5555 Contact : John Walker Title : Information systems Manager

-------- Project------ Project : Computer Room Designer : John doe Number : Account : Location : Same Desc : 3 Rooms w/ Common Underfloor






Enclosure Report

Elevation : 0 ft. (relative to sea level) Atmospheric Correction Factor : 1

Enclosure Number : 1 Name : Computer Room

Enclosure Temperature Minimum : 70 F Maximum : 90 F Maximum Concentration : 7.474 % Design Concentration . . .

Adjusted : 7.198 % Minimum : 7.000 % Minimum Agent Required : 294.0 lbs

Width : 33.0 Length : 29.0 Height : 9 ----------------------------------------------------------

Volume : 8613.0 cubic feet Non-permeable : 0.0 cubic feet

---------------------------------------------------------- Total Volume : 8613 cubic feet Adjusted Agent Required : 302.9 lbs.

Number of Nozzles : 2 Enclosure Number : 2 Name : U.P.S. Room

Enclosure Temperature Minimum : 70 F Maximum : 90 F

Maximum Concentration : 7.478 % Design Concentration . . .

Adjusted : 7.201 % Minimum : 7.000 %

Minimum Agent Required : 46.1 lbs Width : 15.0 Length : 10.0 Height : 9.0 -----------------------------------------------------

Volume : 1350.0 cubic ft Non-permeable : 0.0 cubic ft -----------------------------------------------------

Total Vo lume : 1350.0 cubic ft

Adjusted Agent Required : 47.5 lbs Number of Nozzzles : 1

Enclosure Number : 3



Name : Operations Room Enclosure Temperature . . .

Minimum : 70 F Maximum : 90 F



Minimum Agent Required : 87.6 lbs Width : 15.0 Length : 19.0 Height : 9.0 ----------------------------------------------------- -- Volume : 2565.0 cubic ft Non-permeable : 0.0 cubic ft

------------------------------------------------------- Total Volume : 2565.0 cubic ft Adjusted Agent Required : 90.3 lbs.

Number of Nozzles : 1 Enclosure Number : 4 Name : Common Underfloor

Enclosure Temperature . . . Minimum : 70 F Maximum : 9 F



Minimum Agent Required : 59.4 lbs Width : 29.0 Length : 48.0 Height : 1.25 ---------------------------------------------------------- Volume : 1740.0 cubic ft

0.0 cubic ft ---------------------------------------------------------- Total Volume : 1740.0 cubic ft

Adjusted Agent Required : 61.3 lbs Number of Nozzles : 1






Agent Source Report Agent : HFC 227EA / propellant N2

Adjusted Agent Required : 502.0 lbs Cylinder Name : 650 lb. (A) Cylinder, Upright Cylinder Part Number : 633-083a

Number of Main Cylinders : 1 Number of Reserve Cylinders : 0

Manifold : No Manifold Pipe Take Off Direction : Up Agent per Cylinder : 502.0 lbs

Fill Density : 54.1 lbs / cubic ft Cylinder Empty Weight : 456.0 lbs Weight, All Cylinders + Agent : 958.0 lbs Floor Area Per Cylinder : 3.14 square ft Floor Loading Per Cylinder : 305 lbs / square feet






PIPE NETWORK REPORT PART 1 PIPE ----Node---- ------------------------------ Pipe ----------------------------- Description Start End Type Diameter Length Elevation Main Cyl. x 1 0 1 3 in 4.06 ft 4.06 ft Pipe 1 2 4OT 2-1/2 in 5.00 ft 5.00 ft Pipe 2 3 4OT 2-1/2 in 9.50 ft - Pipe 3 4 4OT 2-1/2 in 15.00 ft - Pipe 4 5 4OT 2 in 2.00 ft - Pipe 5 6 4OT 1-1/2 in 6.00 ft - Pipe/E1-N1 6 7 4OT 1-1/2 in 1.00 ft -1.00 ft Pipe 5 8 4OT 1-1/2 in 6.00 ft - Pipe/E1-N2 8 9 4OT 1-1/2 in 1.00 ft -1.00 ft Pipe 4 10 4OT 1-1/2 in 2.00 ft - Pipe 10 11 4OT 1-1/2 in 15.00 ft - Pipe 11 12 4OT 1-1/2 in 4.00 ft - Pipe 12 13 4OT 1-1/2 in 2.00 ft - Pipe 13 14 4OT 1-1/4 in 7.00 ft - Pipe/E3-N1 14 15 4OT 1-1/4 in 1.00 ft -1.00 ft Pipe 13 16 4OT 1 in 2.00 ft - Pipe 16 17 4OT 1 in 12.25 ft -12.25 ft Pipe 17 18 4OT 1 in 9.00 ft - Pipe 18 19 4OT 1 in 5.00 ft - Pipe/E4-N1 19 20 4OT 1 in 0.50 ft 0.50 ft Pipe 11 21 4OT in 3.00 ft - Pipe 21 22 4OT in 2.00 ft - Pipe/E2-N1 22 23 4OT in 1.00 ft -1.00 ft PART 2 EQUIVALENT LENGTH --Node-- -----------------Pipe Parts ---------------------- --- Equivalent Length-- Str End 90 45 Thru Side Union Other Added Total --------------------------------------------------------------------------------------------------------------------------------- 0 1 - - - - - - 6.5 ft 1 2 - - - - - - 5.0 ft 2 3 1 - - - - - 16.1ft 3 4 1 - - - - - 21.6 ft 4 5 - - - 1 - - 13.2 ft 5 6 - - - 1 - - 14.7 ft 6 7 1 - - - - - 5.3 ft 5 8 - - - 1 - - 14.7ft 8 9 1 - - - - - 5.3 ft 4 10 - - - 1 - - 10.7ft 10 11 1 - - - - - 19.3 ft 11 12 - - - 1 - - 12.7 ft 12 13 1 - - - - - 6.3 ft 13 14 - - - 1 - - 14.5 ft 14 15 1 - - - - - 4.7 ft



13 16 - - - 1 - - 7.7 ft 16 17 1 - - - - - 15.1 ft 17 18 1 - - - - - 11.8 ft 18 19 1 - - - - - 7.8 ft 19 20 1 - - - - - 3.3 ft 11 21 - - - 1 - - 7.5 ft 21 22 1 - - - - - 4.2 ft 22 23 1 - - - - - 3.2 ft PART 3 NOZZLE ----Node-- -----------------------Nozzle--------------------------------------------------------- Str End Flow Name Diameter Type Nozzle Area 0 1 502.0 lbs 1 2 502.0 lbs 2 3 502.0 lbs 3 4 502.0 lbs 4 5 302.9 lbs 5 6 151.5 lbs 6 7 151.5 lbs E1-N1 1-1/2 in 360 Degree 0.6420 square in 5 8 151.4 lbs 8 9 151.4 lbs E1-N2 1-1/2 in 360 Degree 0.6420 square in 4 10 199.1 lbs 10 11 199.1 lbs 11 12 151.6 lbs 12 13 151.6 lbs 13 14 90.3 lbs 14 15 90.3 lbs E3-N1 1-1/4 in 180 degree 0.5060 square in 13 16 61.3 lbs 16 17 61.3 lbs 17 18 61.3 lbs 18 19 61.3 lbs 19 20 61.3 lbs E4-N1 1 in 360 Degree 0.4899 square in 11 21 47.5 lbs 21 22 47.5 lbs 22 23 47.5 lbs E2-N1 in 180 Degree 0.2482 square in






Parts List Report

Total Agent Required : 502.0 lbs Cylinder Name : 650 lb. (A) C ylinder, Upright Number of Cylinders : 1 Nozzle Type Diameter Nozzle Area Part Number E1-N1 360 Degree 1-1/2 in 0.6420 Square in 633-057-2610 E1-N2 360 Degree 1-1/2 in 0.6420 Square in 633-057-2610 E2-N1 180 degree in 0.2482 Square in 633-062-1695 E3-N1 180 Degree 1-1/4 in 0.5060 square in 633-064-2420 E4-N1 360 Degree 1 in 0.4899 Square in 633-055-2280 Nozzle Drill diameter Drill Size E1-N1 0.2610 inches G E1-n2 0.2610 inches G E2-N1 0.1695 inches 18 E3-N1 0.2420 inches C E4-N1 0.2280 inches 1 Pipe: Type Diameter Length --------------------------------------------------------------------------------------------- 40T in 6.00 ft 40T 1 in 28.75 ft 40T 1-1/4 in 8.00 ft 40T 1-1/2 in 37.00 ft 40T 2 in 2.00 ft 40T 2-1/2 in 29.50 ft

List of 90 degree elbows: 4 1 in 4 1-1/2 in 1 1-1/4 in 2 - 2-1/2 in 2 - 3/4 in

List of Tees: 2 - 1-1/2 in 1 - 2 in 1 - 2-1/2 in






System Acceptance Report

System Discharge Time : 9.9 seconds Percent agent in pipe: 31.9 %

Percent agent before 1st Tee: 17.1 %

Enclosure Number : 1 Enclosure Name : Computer room

Minimum Design Concentration : 7.000% Adjusted Design Concentration : 7.198% Predicted Concentration : 7.037%

Maximum Expected Agent Concentration : 7.308% (At 90 F) Minimum Adjusted Predicted Nozzle Agent Agent Agent Pressure

Nozzle Required Required Delivered (Average)

E1N1 147.0 lbs 151.5 lbs 147.8 lbs 154 psig E1-N2 147.0 lbs 151.4 lbs 147.8 lbs 154 psig

Enclosure Number : 2 Enclosure Name: U.P.S. Room




E2-N1 46.1 lbs 47.5 lbs 51.6 lbs 122 psig

Enclosure Number : 3 Enclosure Name : Operations Room







Enclosure Number : 4 Enclosure Name : Common Underfloor


Maximum Expected Agent Concentration: 7.701% (At 90 F)

Minimum Adjusted Predicted Nozzle Agent Agent Agent Pressure







File Name C:\Engineer\Calculation.FLC Calculation Date/Time: August 7, 2001, 04:39:53P M

section3- fm200 sample design.pdf

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