Section3- FM200 Sample Design.pdf

FIRESCAN

®

Section 3 Sample Design

FIRESCAN ® - SAMPLE DESIGN 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.

FIGURE 3.1.1

U.S. Values Computer Rm:

Metric Values 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

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

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

3.05 x 4.57 = 13.94m2 x 2.743 = 38.22m3 4.27 x 4.57 = 19.51m2 x 2.743 = 53.51m3

Sub- Floor:

9.33m2 x 0.381 = 49.27m3

U.L. EX4906

29.0 x 48.0 = 1393 sf x 1.25 = 1740.0cf

Industrial FM-200 Systems Manual P/N: 630-202

Section 3 - Page: 1 of 16 Revision No. 1 Revision Date: June, 2001

FIRESCAN ® - SAMPLE DESIGN 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 8613 7.2 W= X (100 – 7.2) 2.2075 UPS Room / 1350.0 cf: 1350 7.2 W= X (100 – 7.2) 2.2075 Operation Room / 2565.0 cf 2565 7.2 W= X (100 – 7.2) 2.2075 Sub-Floor / 1740.0cf 1740 7.2 W= X (100 – 7.2) 2.2075

= 302.9 lbs

= 47.5 lbs

= 90.3 lbs

= 61.3 lbs

Computer Room / 243.9m³ 243.89 7.2 W= X (100 – 7.2) .13781 UPS Room / 38.23m³ 38.23 7.2 W= X (100 – 7.2) .13781 Operation Room / 72.63m³ 72.63 7.2 W= X .13781 (100 – 7.2) Sub-Floor / 49.27m³ 49.27 7.2 W= X (100 – 7.2) .13781

= 137.4 kg

= 21.5 kg

= 41.0 kg

= 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 Computer Room 100 (302.0 x 2.2994) C= 8613 + (302.0 x 2.2994) = 7.47% UPS Room: 100 (47.5 x 2.2994) C= 8613 + (47.5 x 2.2994) = 7.48%

Metric 100 (137.4 x 0.14355) C= 243.89 + (137.4 x 0.14355) = 7.47% 100 (21.5 x 0.14355) C= 38.23 + (21.5 x 0.14355)

= 7.48%

= 7.48%

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

= 7.48%

= 7.48%

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

= 7.49%

Oper. Room 100 (67 x 2.2994) C= 1890 + (67 x 2.2994) Sub-Floor 100 (62 x 2.2994) C= 1740 + (62 x 2.2994)

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.

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 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) 10 seconds

= 4.75 lbs. (2.15 kg)/second Use 1 nozzle

Operations Room = 90.3 lbs./41 kg) 10 seconds

= 9.03 lbs. (4.1 kg)/second Use 1 nozzle

Sub-Floor

= 6.13 lbs. (2.78 kg)/sec ? =3.07 lbs. (1.39 kg)/sec Use 2 nozzles due to area coverage

Step 2:

= 61.3 lbs./(27.8 kg) 10 seconds

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 Step 3:

= 3.08 lbs. 91.39 kg) / second – Use (2) ¾” (20mm) nozzles

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.

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN

FIGURE 3.3.2-A

FIGURE 3.3.2-B

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 3.4 Step 1:

LAYOUT PIPING NETWORK 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-A

FIGURE 3.4.1-B

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 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 Firescan’s 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 Firescan’s 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 Firescan’s HFC -227ea Engineered System Flow Calculation program printout showing the inputs and outputs of the program

FIGURE 3.4.1-C

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 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 : Address : : : : Phone :

Williamson & King Pte Ltd 81 Loyang Way Loyang Industrial Estate Singapore 508767

--------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 Designer Number Account Location

: Computer Room : John doe : : : Same

Desc

: 3 Rooms w/ Common Underfloor

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 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 Enclosure Report Elevation : Atmospheric Correction Factor :

0 ft. 1

(relative to sea level)

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 : Number of Nozzles :

302.9 lbs. 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 : Number of Nozzzles :

47.5 lbs 1

Enclosure Number

3

U.L. EX4906

:



FIRESCAN ® - SAMPLE DESIGN Name : Operations Room Enclosure Temperature . . . Minimum : 70 F Maximum : 90 F Maximum Concentration : 7.482 % Design Concentration ... Adjusted : 7.205 % Minimum : 7.000 % 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 : Number of Nozzles :

90.3 lbs. 1

Enclosure Number : 4 Name : Common Underfloor Enclosure Temperature . . . Minimum : 70 F Maximum : 9F Maximum Concentration : 7.487 % Design Concentration ... Adjusted : 7.209 % Minimum : 7.000 % 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 Number of Nozzles

U.L. EX4906

: :

61.3 lbs 1



FIRESCAN ® - SAMPLE DESIGN 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

Agent Source Report Agent Adjusted Agent Required Cylinder Name Cylinder Part Number Number of Main Cylinders Number of Reserve Cylinders Manifold : No Manifold Pipe Take Off Direction Agent per Cylinder Fill Density Cylinder Empty Weight Weight, All Cylinders + Agent Floor Area Per Cylinder Floor Loading Per Cylinder

U.L. EX4906

: : : : : :

HFC –227EA / propellant N2 502.0 lbs 650 lb. (A) Cylinder, Upright 633-083a 1 0

: : : : : : :

Up 502.0 lbs 54.1 lbs / cubic ft 456.0 lbs 958.0 lbs 3.14 square ft 305 lbs / square feet


Section 3 - Page: 1 0 of 16 Revision No. 1 Revision Date: June, 2001

FIRESCAN ® - SAMPLE DESIGN 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

PIPE NETWORK REPORT PART 1 – PIPE

Description Main Cyl. x 1 Pipe Pipe Pipe Pipe Pipe Pipe/E1-N1 Pipe Pipe/E1-N2 Pipe Pipe Pipe Pipe Pipe Pipe/E3-N1 Pipe Pipe Pipe Pipe Pipe/E4-N1 Pipe Pipe Pipe/E2-N1

----Node---Start End 0 1 2 3 4 5 6 5 8 4 10 11 12 13 14 13 16 17 18 19 11 21 22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

------------------------------ Pipe ----------------------------Type Diameter Length Elevation 3 in 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT 4OT

4.06 ft 2-1/2 in 2-1/2 in 2-1/2 in 2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/2 in 1-1/4 in 1-1/4 in 1 in 1 in 1 in 1 in 1 in ¾ in ¾ in ¾ in

4.06 ft 5.00 ft 9.50 ft 15.00 ft 2.00 ft 6.00 ft 1.00 ft 6.00 ft 1.00 ft 2.00 ft 15.00 ft 4.00 ft 2.00 ft 7.00 ft 1.00 ft 2.00 ft 12.25 ft 9.00 ft 5.00 ft 0.50 ft 3.00 ft 2.00 ft 1.00 ft

5.00 ft -1.00 ft -1.00 ft -1.00 ft -12.25 ft 0.50 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

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 13 16 17 18 19 11 21 22

16 17 18 19 20 21 22 23

1 1 1 1 1 1

-

-

1 1 -

-

-

7.7 ft 15.1 ft 11.8 ft 7.8 ft 3.3 ft 7.5 ft 4.2 ft 3.2 ft

PART 3 – NOZZLE ----Node------------------------Nozzle--------------------------------------------------------Str End Flow Name Diameter Type Nozzle Area 0 1 2 3 4 5 6 5 8 4 10 11 12 13 14 13 16 17 18 19 11 21 22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

U.L. EX4906

502.0 lbs 502.0 lbs 502.0 lbs 502.0 lbs 302.9 lbs 151.5 lbs 151.5 lbs 151.4 lbs 151.4 lbs 199.1 lbs 199.1 lbs 151.6 lbs 151.6 lbs 90.3 lbs 90.3 lbs 61.3 lbs 61.3 lbs 61.3 lbs 61.3 lbs 61.3 lbs 47.5 lbs 47.5 lbs 47.5 lbs

E1-N1

1-1/2 in

360 Degree

0.6420

square

in

E1-N2

1-1/2 in

360 Degree

0.6420

square

in

E3-N1

1-1/4 in

180 degree

0.5060

square

in

E4-N1

1 in

360 Degree

0.4899

square

in

E2-N1

¾ in

180 Degree

0.2482

square

in



FIRESCAN ® - SAMPLE DESIGN 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 Parts List Report Total Agent Required : Cylinder Name : Number of Cylinders :

502.0 lbs 650 lb. (A) C ylinder, Upright 1

Nozzle E1-N1 E1-N2 E2-N1 E3-N1 E4-N1

Type 360 Degree 360 Degree 180 degree 180 Degree 360 Degree

Diameter 1-1/2 in 1-1/2 in ¾ in 1-1/4 in 1 in

Nozzle E1-N1 E1-n 2 E2-N1 E3-N1 E4-N1

Drill diameter 0.2610 inches 0.2610 inches 0.1695 inches 0.2420 inches 0.2280 inches

Nozzle Area 0.6420 Square in 0.6420 Square in 0.2482 Square in 0.5060 square in 0.4899 Square in

Part Number 633-057-2610 633-057-2610 633-062-1695 633-064-2420 633-055-2280

Drill Size G G 18 C 1

Pipe: Type Diameter Length --------------------------------------------------------------------------------------------40T ¾ in 6.00 ft 40T 1 in 28.75 ft 40T 1-1/4 in 8.00 ft 40 T 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

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN 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 System Acceptance Report System Discharge Time : 9.9 seconds Percent agent in pipe: 31.9 % st Percent agent before 1 Tee: 17.1 % Enclosure Number : Enclosure Name :

1 Computer room

Minimum Design Concentration Adjusted Design Concentration Predicted Concentration Maximum Expected Agent Concentration

: : : :

7.000% 7.198% 7.037% 7.308% (At 90 F)

Nozzle

Minimum Agent Required

Adjusted Agent Required

Predicted Agent Delivered

Nozzle Pressure (Average)

E1—N1 E1-N2

147.0 lbs 147.0 lbs

151.5 lbs 151.4 lbs

147.8 lbs 147.8 lbs

154 psig 154 psig

Enclosure Number : 2 Enclosure Name: U.P.S. Room Minimum Design Concentration Adjusted Design Concentration Predicted Concentration Maximum Expected Agent Concentration

: : : :

7.000% 7.201% 7.777% 8.074% (At 90 F)

Nozzle





E2-N1

46.1 lbs

47.5 lbs

51.6 lbs

122 psig

Enclosure Number : Enclosure Name :

3 Operations Room

Minimum Design Concentration Adjusted Design Concentration Predicted Concentration Maximum Expected Agent Concentration

: : : :

7.000% 7.205% 7.298% 8.578% (At 90 F)

Nozzle





E3-N1

59.4 lbs

61.3 lbs

63.2 lbs

92 psig

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN Enclosure Number : Enclosure Name :

4 Common Underfloor

Minimum Design Concentration : Adjusted Design Concentration : Predicted Concentration : Maximum Expected Agent Concentration:

7.000% 7.209% 7.417% 7.701% (At 90 F)

Nozzle





E4-N1

59.4 lbs

61.3 lbs

63.2 lbs

92 psig

U.L. EX4906



FIRESCAN ® - SAMPLE DESIGN Copyright © Hughes Associates, Inc. HFC-227ea FlowCalc UL: Ex4906 Project: Computer Room File Name C:\Engineer\Calculation.FLC Calculation Date/Time: August 7, 2001, 04:39:53P M

U.L. EX4906



Section3- FM200 Sample Design.pdf

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