ML20049J181
| ML20049J181 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 02/28/1982 |
| From: | ACOUSTIC TECHNOLOGY, INC. |
| To: | |
| Shared Package | |
| ML20049J178 | List: |
| References | |
| NUDOCS 8203120232 | |
| Download: ML20049J181 (150) | |
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i D ' [Db,D'" _ 1 VERIFICATION OF THE SIREN ALERT SYSTEM
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FOR WATERFORD 3 NUCLEAR POWER STATION FEBRUARY 1982 PREPARED FOR: LOUISIANA POWER & LIGHT COMPANY NEW ORLEANS, LOUISIANA REVISED ' I h) Acoustic TECHNOLOGYATI INC. l BOSTON, MASSACHUSETTS I
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a VERIFICATION t t i OF THE J SIREN ALERT SYSTEM yl
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FOR WATERFORD 3 NUCLEAR POWER STATION
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PREPARED FOR : LOUISI AN A POWER S LIGHT COMPANY NEW ORLEANS, LOUISIANA REVISED SUBMITTED BY : ACOUSTIC TECHNOLOGY i 240 COMMERCI AL STREET j ' BOSTON , MA 02109 I
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SUMMARY
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. .i INTRODUCTION ,
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- 1. ACOUSTIC CRITERIA'OF THE SIREN SYSTFM 4
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.; f; .) 11. SIREN ACOUSTIC COMPUTER MODEL 5 -l
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A. Hemispherical Wave Divergence 6 s B. Atmospheric Absorption 6 U.h. fy
,s f:4 C. Vegeta tion , Trees, and Ground Effects -
D. Wind Shadows 6 7
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lil. VERIFICATION OF SIREN ACOUSTIC MODEL 8 j - Table 1: Comparison of Measured and Predicted 9 ! Sound Level of Sirens 1 IV. SELECTION OF SIREN LOCATIONS 10 l c FIGURE' 1: Directional Wind Ef fects on 60 dBC FIGURE 2: Composite Contour Resulting from Wind Effects ut.l TABLE 2: Locations of Sirens
; cc APPENDIX 1: Siren Sound Levels in Tabular Form 1-1 l
APPENDIX 2: Siren Sound Levels in Graphical Form 2-1.
-J APPENDlX 3: Topographical Maps with 60 dBC Contours 3-1
} .- Topographical Map Index 3-2 4 4-l . l t
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This report presents the verification of the recommended siren system sound
, coverage for prompt notification of the public within the radiological Emergency j Planning Zone (EPZ) of the Waterford 3 Nuclear Power Station. The objective of l
l AcGuatic Tecnnology Inc. ( ATl; is to verify and achieve a siren syster.: that is G. technically adequate, cost effective and reliable. The verification of the system
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design is a result of a systematic computer optimization process, with the goal of t [{f achieving full acoustic alerting signal for the high population areas within the EPZ. [i: an The final design consists of 38 sirens for the required acoustic coverage within the EPZ. The locations were physically selected, examined and inspected by Louisiana Power and Light before finalized by the ATI computer model. The warning system designed for the EPZ of Waterford 3 Nuclear Station is a composite system. This is due to the demographic characteristics of the 10-mile zone which has in general a low population density with scattered areas of
- relatively higher population density. There fore, in the areas of the EPZ where
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the population is relatively concentrated outdoor warning sirens are used. For the remainder of the EPZ where the low population exists, tone activated radio receivers and/ or mobile sirens may be used.
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/ A prediction of siren sound coverage of a minimum of 60 dBC has been made for each of the 38 siren locations. The siren system has been designed and analyzed l
,;? to meet regulatory requirements and achieve the acceptance of the public as well as Federal State and Local government officials. ATI is confident that the proposed siren area alerting coverage fully meets the guidelines set forth in FEMA's CPG -
17 Outdoor Warning Systems Guide and the NRC NUREG-0654 criteria. The 60 dBC 1 sound coverage was provided based on an assumed ambient noise level less than 50 i dBC throughout the EPZ. f i
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1 l The nuclear accident at Three Mile Island (TMI) underscored the need for better emergency preparedness procedures for commercial nuclear power plant i i licensees and for state and local of ficials involved with a general nuclear emergency. in January 1980, the Nuclear Regulatory Commission (NRC) and the Federal
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and comment entitled Criteria for Preparation and Evaluation of Radiological Emergency Response Plans and Preparedness in Support of Nuclear Power Plants (NUREC-0654, FEM A-R E P- 1) . Among other things, this document lists the criteria for prompt notification of the public in the event of a general nuclear emergency. These criteria are presented in Appendix 3:' "Means for Providing a Prompt i Notification to the Population". The final legislation regarding prompt notification was published in the Federal Register which defines the requirements as follows: "By July 1, 1981, the nuclear
- i 1 power reactor licensee shall demonstrate that administrative and physical means have been established for alerting and providing prompt instructions to the public within d
] the plume exposure pathway EPZ. The design objective shall be to have the capability to essentially complete the initial notification of the public within the <
plume exposure pathway EPZ within about 15 minutes." Acoustic Technology Inc. (ATI) under a contract from Louisiana Power and Light (LPSL) has verified the design of_ prompt notification siren system for . j areas within Waterford 3 Nuclear Power Station EPZ. ATI has given full consideration i a l ! to the requirements in Appendix 3 of NUREC-0654. The criteria for minimum
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} acceptance design objectives for coverage by the system is contained in Appendix 3 I as follows:
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's l a) Capability for providing both an alert signal and an informational fj 3 or instructional message.to the population on an area-wide basis
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c) Special arrangements will be made to assure 100% coverage, within 45
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- 1. ACOUSTIC CRITERIA OF THE SIREN SYSTEM l
l In order to achieve a full alerting effect for the required areas within EPZ in
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compliance with NRC/ FEMA requirements, the siren system has been analyzed to
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provide a minimum of 60 dBC acoustic siren signal. The 60 dBC acoustic coverage has A determined by taking into consideration hemispherical wave divergence, 4
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NUREG-0654 (Appendix 3) indicates that an acoustic signal of 10 dB above the average daytime ambient level is an acceptable criterion for the desigi of
, a siren system. In addition, this 10 dB differential above average daytime ambient.
level is meant to provide a distinguisable signal inside a home of average residential j construction under average daytime conditions. I { NUREC-0654 (Appendix 3) also indicates that the determination of adequate
) siren sound levels can be achieved by either of two options. Field surveys can be conducted to determine typical daytime ambient sound levels, and the siren
] system can be designed to achieve 10 dB above this documented ambient. As an alernative to field surveys, in areas with population density below 2,000 persons /
l { square mile a sound level of 50 dBA can be assumed and the siren system can be 4 designed to produce a minimum of 60 dBC. - i l Since the population in the EPZ of Waterford 3 Station is below 2,000 persons / square mile, the assumed ambient sound level of 50 dBA is used to generate the minimum 60 dBC sound coverage criteria for the Waterfo:-d 3 Giren System Design. 1
, However, since no sound measurements have been made for locations within the EPZ, -
there may be areas where industrial activities raise the ambient noise level above 50 dBC. Areas where the ambient level is above 50 dBC may receive adequate alert i coverage if they are within close proximity to a siren. However, high noise areas on the perimeter of the 60 dBC coverage may require additional alert coverage to t achieve a signal 10 dB above the ambient level as indicated in the NUREG-0654 criteria. .- i, J Acoustic TECHNOLOGY lNC.
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'l 3 The siren sound levels within the Waterford 3 Nuclear Power Station plume exposure EPZ were calculated by the use of a computer model developec by Acoustic Technology, Inc ( ATI).
This model takes into consideration meterological d factors and land surface conditions which effect the propagation of sound generated by each siren. However, topographical gradients in the region surrounding the j Waterford 3 Station are very slight at all points in this region and only a very small fraction of points are at elevations exceeding 25 feet above sea level, so l there are no hills which may act as barriers to sound. Hence, effects of land l surface condition (i.e. , vegeta* ion, water bodies, etc.) on the propagation of
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sound waves overshadow the effects of topography in this region, so topographic data played no role in the computer model. In addition to any possible topographic effects were further minimalized by locating each siren at the highest point possible.
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The greater determining factors of the sound pressure level contours were the changes in sound pressure as the sound wave passes over vegetation, 1 j marshland, water, open fields, and urban areas, The computer program which
'j calculates siren coverage considers each of these surface conditions.
j The computer program calculates the sound pressure at any given point
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'l around the siren to be evaluated. Eoch point is described by its distance from the siren and the surface condition which the sound wave must pass over to reach that point. Othar variables such as wind speed, air temperature, and relative f humidity take part in these calculations, in calculating the attenuation of the sound wave, the computer program uses the number codes to describe land surface
[ condition directly to calculate this attenuation. ' 1 i h k
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! hemispherical wave divergence, atmospheric absorption, absorption due to vegetation, I
trees, and ground effects, and upwind shadows. These factors will now be addressed
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} A. Hemispherical Wave Divergence:
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' The sound pressure level due to hemispherical divergence is uniform in all directions at a rate of 6 dB per doubling of f
distance. 1 1 B. Atmospheric Absorption:
, Molecular (atmospheric) absorption further reduces the sound energy, t
.] Absorption is highly dependent on the temperature and relative humidity of the air and is quite oronounced at large distances and at high frequencies. To avoid over or under design of the system, d average atmospheric conditions is used. The average conditions were determined to be 75% relative humidity and 68 F.
C. Vegetation, Trees, and Ground Effects: Ground attenuation is a function of the structure and covering of the ground and of the height of the siren and receiver above the ground. The ground covering conditions at various directions and distance from the siren to receivers were directly read from the USGS
; maps. Sound travels from a siren to a receiver location.by two paths:
l the direct line-of-sight path which is the primary path of outdoor .
; sound propagation, and the ground reflected path. Both of these l propagation paths are subject to sound atten,uation ciue to the effect i
! of the ground cover existing between the siren and l
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1 1 the receiver location. The amount of attenuation resulting from the sound propagation along the ground reflected path will depend on i whether the ground cover is absorbative or re.lectivs. Tall trees intercept the direct sound propagation path and can attenuate the sound from the siren substantially at the receiver location. l D. Wind Shadows: I
-I Wind gradients near the ground are nearly always positive; that is, the windspeed increases with height. As a result, a shadow zone is most
] commonly encountered upwind from a siren because there the wind gradient
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bends the sound rays upward. Downwind, the sound rays are bent downward, i and no shadow zone is produ: ed. Cross wind, there is a zone of transition. The average wind condition at Waterford 3 Nuclear Power Station is 9.5 mph, so this is the value input to the computer model; such a value for wind speed has a minimal effect on the shape of sound pressure level. For any given wind direction, a unique sound pressure level contour is produced by the siren, given a constant wind speed. For example, Figure 1 illustrates the effect of
, wind on a typical contour for siren X, for wind from the (a) East, (b) Southwest, and (c) 20 west from true North. Although there may be a prevailing wind direction I for this area, in general wind may come t~ rom any direction to the siren, so the computer model must account for any situation. It does this by calculating coordinates for a contour which represents a conservative composite of all possible contours. This contour is
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] illustrated in Figure 2 for Siren X.
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; Another factor _ in the ATI acoustic computer model is the siren sound level rating at i 100 feet. Vendors of commercial sirens claim that their sirens produce a sound level of 125 i
i 4' dBC at 100 ft. However, these sirens were tested in the field and in an anechoic chamber t (free field test) and the actual recorded sound level was approximately 122 dBC for dual i
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; isvel at 100 ft that is used in the ATI compu'ter model is 122 dBC rather than 125 dBC j as claimed by siren vendors. The ratings of 122 dBC for commercial sirens should be considered as further conservatism in our design. , The sound attenuation is calculated by the computer model for each siren and the 60 1 dBC contour is determined. The corresponding sound level data for each siren within i
its propagation range is presented in tabular form in Appendix 1 and in graphical form in Appendix 2. Ill. VERIFICATION OF SIREN ACOUSTIC MODEL in order to verify the accuracy of the Acoustic Technology Inc. model the measured sound levels were compared to those predicted as shown in Table 1. Excellent agreement was obtained from all data points under consideration. It is note-worthy that the model predicted values are slightly less (1-3 dB) than those measured j values. This indicates a further conservatism in determining the sound level contours. I 1 1 4 l, i I I i
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-~~a COMPARISON OF MEASURED AND PREDICTED SOUND LEVELS OF SIRENS ,
s Distance Between Distance Model Measured Predicted and - from the Predicted Background Sound Measured Sound Siren Level Noise Level Level Level Test in ft. Ground Condition dBC dBC dBC dB i Beaver Valley 5,600 Variable topography - Vegetation 49 45 50 -1 " Siren Test .. 1,100 Housing, trees and vegetation 95 53 97 -2 500 Flat - Grass 107 58 109 -2 ; j 3,600 Slight topography - vegetation 75 -- 78 -3 ;
.t-Three Mile I ji island Test 4,500 Flat Grass - Housing 77 --
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m IV. SELECTION OF SIREN LOCATIONS in order to avoid the extra cost of extending power lines for the installed f, sirens, it is essential to place sirens close to the available power lines within the j EPZ. Tentative siren locations were provided by Louisiana Power & Light Co. ( LP& L) . Several computer iterations were made to detennine the required acoustic coverage of the siren system. LPSL performed the site inspections for these selected sites. After the final selection was made, ATI finalized the results for the selected 38 siren locations. For each location, predictions o'f siren acoustic coverage (utilizing the criteria discussed in Sa. !on 1) have been made. The locations of sirens and the extent of siren covera.ge are presented in Appendix 3. A listing of the sirens is found in Table 2. l I 1 t l z i e
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i_w . . . . - -. . :n " _ u. Q ,f G'Q ;}:. / .. M WE M'".Ze TABLE 2 3 LOCATIONS OF SIRENS i I Siren # USGS Map Location i i 1. Lutcher, La. On Hwy.18, pole switch 3054, across rd. on levee, W. of mile marker 34. In Wallace.
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- 2. Reserve, La. Off Hwy. 54 at Rec. Center Balifield Driveway in 100' transformer 2262450365
- 3. Reserve, La On LPL property, substa. at rear of Marathon Oil Plant pole 2344750726
- 4. Reserve, La On Hwy. 637 at S. end Pepsi Cola Plant, i pole 2433750917
- 5. Laplace, La. East side of Destrehan at River Rd. f, Gordon St. levee side of River Rd. If possible.
- 6. Laplace, La. At intersection of First St. and lilinois Central Railroad Tracks.
- 7. Reserve, La. On Hwy. 61, Cate 5 of Dupont Plant, pole 2515551376
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- 8. Reserve, La. Intersection of' Airline Highway and Camellia Street.
- 9. Reserve, La. In Lucy at Hwy.18 and Lucy.
- 10. Reserve, La. In .Tigerville on Hwy. 44 and 12th St.
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- 11. Reserve, La S/W of Edgard near hwy.18 at Courthouse.
- 12. Reserve, La. On Hwy.18 at mile post 36, across rd.
on levee 13; Laplace, La On Fairway Rd. , N. side of rd. ,100* E of pole 2676251633
- 14. Luling, La in St. Rose on River Rd. and Crespo Ave.
l levee side across from International Maytex Corp
- 15. Laplace, La Intersectiqn Rt. 61 and Montegue Dr. ,
N .E. corner, pole 2720050847 1
! 16. Laplace, La On Rt. 51, W. side of rd. , 50' W. of pole t 277051487
- 17. Laplace, La On Peavine Rd., S. side of road 50' E.
.-l of pole 2864352489
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E, j i Table 2 (continued) LOCATIONS OF SIRENS l USGS Map Location l Sirens #
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- 18. Hahnvitic., La At Boutte School, On Hwy. 631 near transformer and service pole a
- 19. Laplace, La. On Somerset Rd., W. side of Rd. , pole 2832650829
.; 20. Laplace, La.
' N/NE of Town of Norco at Intersection of Marino St. and 7th St. by Railroad tracks.
- 21. Luling, La. On Hwy. 90 at Barton Rd.
- 22. Laplace, La On River Rd.
- 23. Hahnville, La On Hwy. 631, near First Baptist Church of Paradise, E. side of church
- 24. Laplace, La. On Hwy.18, at mile post 44
25. Laplace, La. On Evangeline Rd., E. side of Rd., SE of pole 2749549138 In Montz m '
- 26. Hahnville, La On Hwy. 52 at Hackberry, E. side of Rd.
- 27. Hanville, La On E. side of plant in parking lot
- 28. Hahnville, La. On Hwy. 3142 between Cate 31 and 30 of Union Carbide Plant . In Taft.
- 29. Hahnville, La. On Hwy.18, W. of Green Light Hardware
- 30. Hahnville, La. On Prospect St., 3rd pole N. of I .C. RR, pole 2963448495
- 31. Des Allemands, La. West of Paradise at Bayou Gauche Rd.f, Hwy. 90. -
- 32. Hahnville, La. SW side of RR tracks, NW side of rd, in open field, pole 3004447845
- 33. Hahnville, La. On Hwy.18, at Hahnville H.S. across rd.
at end of line.
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i 34. Hahnville, La. In Destrehan located at River Oaks Drive i 1 and Eve Street. I l gj Acoustic TECHNOLOGY INC. i
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LOCATIONS OF SIRENS I. l Siren # USGS Map Location
- 35. Ama, La. La. 18 and 2nd. or Kennedy Dr.
- 36. St. Rose, La. 1/4 mile from River Rd. on Almedia Rd.
across from the street sign with T on it.
- 37. DesAllemands, La. Hwy. 90 at Carlon, Rd.
[\ 38. Bayou Cauche Hwy. 306 at Sunset Drainage Pumping Station. I
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, LOUISlANA POWER & LIGHT Waterford 3 Nuclear Station Siren System Analysis i SIREN SOUND LEVELS Distance "R" from the Siren to Receiver in Feet o o o o e o e o o o o o o o o o o o a o.e o
m 8 N m N o M e M o W e W o en O e 7. ei we 84, t. 4 :? p . yu. - 15 t7. ' ': 0 , 'a * . a' 97. 83. se. ?? yu. ' 30 ~67 49. 93. 66. 82. ??. Tu. 7'. e6. ^5 45 i... S'. of 36. 81. 77. 74 Ti. e. 8 . 3 5 60 't 97. 91. 86. 8: '? 74. 7'. 68. .' i' ?3. 86. 75 'e. 8 .: . '8. 74 . es. .6 90
- 97. Pl. 85. 80. Ti. 73. 69. . e. . .:.
lor 'se. 97 4'. 65. 79 75. 72. e6. 65. .3. 120 ' ' ' **. 92. 86. 80. 76. 73. 68. 6u. *1 . 135 i* . 9;. 35. ~*. 74 59. e4. ed. 150 ^. *f. 85. 79. 74- 70. e7 e4 'c. 165 '7- 99 93- 88. 84. 30. '7. 74. 7:. *a 180 - I00* **. 9;. 67. 83. 80. 77. 74
300* 96. 9I. 87- 83. 80. II. 74 I 195 -
210 t: 7. '06. 96 91. 87, 83. 80. 77. .' 4 . 7 225 :47. '90. 96. 91. 87. 83. 80. ??. 74. - 240 7. 100 96. 9?. 87. 83. 80. 77. 74.
= 255 '.~. 'W. 96. 91. 87. 83. 80. 77. 74. 7.
# 7, 190. 9 ti . 91. 87. 33. 80. 77. 79. 7, 3 270 100. 96.
'u?. 9i. 67. 83. 80. 77. 74. 72 .
.In 285 e i-'. 190. 96. 91 67. 83. 80. 77. 74, 7, a 300 i ?. *nn. 46, 9. 37. g3, go, ,.7, u, ,-
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15 61. o7. 64. 59. 57. Siren 8 k 30 so. 64. 61. 59 So. 55.
- 54. Siren Height =50 Ft.
o 45 o7 o4 61. 59 So. 54 Temperat ure =6 8' p 60 o7. e4 o1. 59, 57 55. R.H. =75%
< 75 64 61. 58. 54 51. 47.
90 65. 61. 57. 53. 49 45. " 105 o5. o2. oo. So. 52. 40 120 SIREN MANUFACTURER'S So. 52. 48. 44 40. 3o. RATING = 125 dBC
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0 91. 87. 83. 74 7o. 72. ei. 15 107 100. %. 91. 57 83. 7L. 7o. 72. ei.
'4 30 107 100. 9o. 91. 85. St. 77. 73. 70. oo.
45 107. 90 94 69 34 JO. 7o. 72. 09. o5. 60 107. 100, 95. 90. 85. St. 77 74 70. o5. 75 107. 100. 95. 90. 85. 81. 77. 72. o9 oo. 90 107. 100. +5. 90. 85. St. 77 74 71. o8.
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105 107. 100. 95. 00. 85. 6:0. 7o. 73. 70. o7 120 107. 100. 95. 00. 85. 81. 78. 74. o9 e5. 135 107. 100. 95. +0. 85. 81. 78. 74 71. 68. 150 107 100. 95. 90. 85. 81. 77. 74 70. e7. 165 107. 99. 94 89 84 40. 77 73. 70. o7. 180 107 100. 90. 89. 85. 81. 77. 74. 71. 08. 195 107. 100. Co. 01. 87. 33. 80. 77. 74. 71. 210 107. 100. 9e. 91. 87 83. 80. 77. 74. 71. 225 107 100. 9o. 91. 87. 83. 80 77. 74 71. 240 107. 100. 9o. +1. 87. 83. 80. 77. 74 71, a 255 107. 100. 9o. 91. 87 83. 80. 77. 74 71. I 270 107. 100. 9e. 91. 87. 83. 80. 77 74. 71. 5h285 107. 100. 96. 91. 87. 83. 80. 77. 74 71. 5 300 107 100. 96. 91. 87. 83. 80. 77. 74 107. 71. c 315 100. 9c. 91. 87. 83. 80. 77. 72. 70. 330 107. 100. &c. 91. 87. 83. 80. 77. 74. 71.
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. REVISED O o7. e4, og, 59, 57, 55, g 15 co. 62. 58, 54, 50, 48. Siren 9 30 o3. 60. 57. 55. 52. 50. Siren Height =50 Ft.
- 45 o2. 59, 55. 51. 48, 45. Temperature =68*
m 60 ca. 58. So. 53. 40 47. R.H.=75%
. 75 o3. 60. 58. 55. 53. 51.
90 62. o0. 57 c5. 55. 53. ' 105 e4 61. 59. So. 54. 52. SIREN' MANUFACTURER'S 120 c2. 59. 57, 54 52, 50. RATINC = 125 dBC 1 35 c 5. 62. co. 58. 55. 53.
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- 57. 52.
165 o5. e2. oo. t I 57, 55, 53. 180 o3. 58. o5. 60. 56. 54 195 o+. 67. 65. 62. oO. 59, 210 oo. 67. o5. 62. o0. 59. 225 o+. 67. o5. 62. oO. 57
- 240 o ?. 67. o5. 62. o0. 5+.
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- 67. 65. o0. 59 270 eo. o2.
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0 197 109 O c. . 91. 87. 13. 79 7*. 70. o7. 15 avi. 100, ie. +1. 87. 83. 78. 74. 74. ed. 30 ;v7 100. 9o. +1. 87. 78. 74
- 83. 7t. od 45 av7 100. Lo. +1. 87 83. 79 7o. 72. oi.
60 107 100. So. 91. 87 83. 79 7o. 72, os. 75 107. 100. 9o. 91. 87 St. 78. 74. 71. o8. 90 107 **. 43. 88. 84. 30. 7o. 73. o8. o 3. 105 107. 100, oe. 91. 87. 83. 7+, 74 71. o8. 120 107. 100. +4 89. 85. 81. 78. 73. o9 co. 135 107. 100. Co. 91. 87. 83. 79. 7o. 71. co. 150 107. 100. Co. 91. 87. 83. 79. 7o. 72. os. 165 107 100. 44. 89. 85. 81. 78. 75. 72. 70. 180 107 100. Oc. 89. 85. 81. 77. 74 71. c8. . 195 107 100. 95. 00. So. 82. 78. 75. 72. o+. 4 210 AV-. *S. 04 84 84 80. 7o. 73. o+. oo. 225 loc. +8. 44. 89 84 80. 77. 74. 71. os. 240 107. 100. *5. 90. 85. 81. 78. 75. 72. 70. 0 255 107 100. 45. 90. 85. 81. 78. 75. 72, 70.
- 270 107 100. *S. 90. 85. 81. 78. 75. 72. 70.
p285 107. 100. 95, 90. 85. 81. 78. 75. 72. 70, o 300 107. 100. 95. 90. 85. 81. 78. 75. 72, 70. a e 315 107 100. +5. 90. 85. 81. 77 75. 72. 69
~~ 330 107 100. 95. 90. 85. 81. 78. 75. 71. o9.
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+
3 45 37, 34, o0. 56, 54, 5g. , Temperature:68* l p 60 67. 64. o1. 59. 57. 55. R . H . = 7 51
. < 75 o5. 62. o0. 58. 55. 53.
90 So, 55, 5g, 47, 43, go, a 105 o5. 62. 58. 54. 51. 47. SIREN MANUFACTURER'S 120 So. RATING = 125 dBC o4 01. 58. 54 51. I 35 o4 58. 150 o1. So. 54 51. 35, ,2, ,g, 53, 55, 53, 165 ,7, 45, ,3, eg, 59, 57, 180 e5. 63. o0. 58. 56. 53. 195 oo. e4. o2. 59. 57. 56. 210 o4 o2. 59 57. 55. 53. 225 57. oo. 64. c2. 59. So.
- 240 o7 65. e3. 61. 59 57.
255 o7. o5. 63. o1. 50 57. 270 285 27 o5. o3. .1. So. 57. Computer Analys. is by:
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- 2 0 2 N E $ 3 0 107 100. %. St. 87. 83. 74 7o. 72. 2 .
15 197 100. 9o. 91. 87 83. 74 7o. 72. eo. 30 Iv7 100. 9o, 01, 67. 83. 79. 75. 71. e8. 45 107. 100. %. 91. 87. 83. 70 75. 71. .: 60 107, 100. %. 91. So. 82. 78. 74 71, o8. 75 107 100. %. 91. Go, 82. 78. 74 74, o8.
- 3. 90 107 100. 9e. 91. Go. 82. 78. 74 74. oo.
4 105 107, 100. %. 91. So. 82. 78. 74 71. o8. 120 107. 100. %. +1. So, 82. 78. 74 71. o8. 3 135 107 100. %. +1. 87 83. 74 75. 71. es. 150 107. 100. %. 91. 87. 83. 70, 7o. 72. o8. 165 107, 100. %. 91. 87. 83. 80. 77. 74 7J. 180 107. 100. %. St. 87. 83. 80. 77. 74 70. 195 107 100. C o. 91. 87. 83. 80. 77. 74. 71. 210 197. 100. %. 91. 37. 83. 80. 77. 74 71. 225 107. 100. %. 71. 87. 83. 80. 77. 74 740 107 71. 100. %. 91. 87. 83. 80. 77. 74. 71.
$ ?35 107 100. %. 91. 87. 80. 77. 74.
- 270 107.
- 83. 71.
100. %. 91. 85. 80. 75. 71. oo. e4 p285 107. 100. 9o. 91. 87. 83. 78. 75. 72. 70. o 300 107, 100. %. 91. 87. 83. 80. 77. 74 71. e 315 107. 100. 9o. 91. 87. 83. 80 74
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; 345 107. 100. 9o. 91. 87. 83. 79 7o. 72. o9.
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e 45 e5. o2. o0. 57. 55. 53. Temperat ure =68* e 60 c5. e2. o0. 57. 55. 53. R.H.=75% k 75 e5. o2. o0. 58. 55. 53. 90 57 53. 51. o4. 61. 46. r 105 e5. o2. o0. 57. 55. 53. SIREN MANUFACTURER'S 120 e4, 58. o0. 55, 53. 51, RATING = 125 dBC 135 o2. 59 So. o5. 54 52. 150 o4 et. 59 So. 53. 5t. 165 67. e4 o2. 59. 57. 55. 180 o7. o5. o2. 59. 57. So. 195 o7. os, o3. 61. 50, 57. 210 o,s o7, o3. ot. 59, 57, 225 co. s7 o5. o2. 5). So.
- 240 o+. o7 o5. o!. 58, 55, 255 o+. o7 o5. 61. 58. 55. '
270 on. 58. 285 o7. 54 52. 50. 48. Computer Analysis by: e5. o3. ca. 57. So, 300 es. o7 o5. c.2. o0. 5 s. 315 os, o7 e5. o2. 54 57 . 330 :. a . o7 e5. o2. o0. 53 m o7. e4 oi. 5+. 57. 55. i i> @ Acoustic TECHNOLOGY INC. 1
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- Distance "R" from the Siren to Receiver in Feet I o E E E E E E E E E
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107. :00. 96. 9;. 8?. 78. 15 *00 81 ?5. 72. 70
- 07. 56. 42 87. H3. 80. 77. 7".
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* :07. 96. 91. 87 83. 80. 77. 74 71 45 07. 100. 96. 91. 86. 81. 77. 74 71. 68.
60 'e?. 99. 94. 89. 84 80. 77. 73 70. t.. ? 75 '07. 99. 94 89. 84 80. 77. 73. 69. e.o . ' ' ;. 90 106. 98. 94. 89. 84 80. 76. 105 f06. 98. 94
- 72. 69. e6.
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120 *06, 98. 94. 89. e. 7 . 84 80. 75. 72. d9. 135 106. 98. 94. 89. 84 e5.
- 80. 75. 72. 69. 67 150 f06. 98. 94. 89. 84 80. 75. 72. 69. 85, 165 '06. 98. 94 89. 8" 80 75.
107. 7' 68. e. 5 180 100, 95. 90. 85. 81. 77. 74. 70. 107. 99, 67. 195 94 89. 84 80. 77. 73. 70. 67 210 10?. 100. 96. 89. 84 80. 76. 73. 70.
- 0 ?. 100. 96. 67 225 91. 87 83. 80. 77 Tu. 7 240 :07. 100. 96, 91. 8?. 83. 80.
'07, 100. 77. 74. 7'
= 255 96, 91. 87 83. 80. 77. 74 107. 100. 96. 91. 7'.
I 270 87 83. 80. 77. 74. 7' h285 107. 100. 96, 91. 87 83.
- 107. 100
- 80. 77 74 70 O 96, 91. 87. 81. 78. 75. 72. 69.
107. 100 96 91. 87. 83.
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- 80. 77 72. 70 330 96. 91. 87 83. 78. 76 107. 100, 96. 9*. 87 7'. 68.
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- 67. 65. 63. 59. 57. 56. Siren 12 69 67. 65. 61 59. 56. Siren Height =50 Ft.
.2 45 65. 63. 60. SS. 56. 53. Tempera ture=68* r p 60 e. 5 . 62. 58. 55. 53. S'. R . H . =751
< 75 6u. 62. 60. 58. 56. Su.
90 64. 62. 60. 58. 56. 5*. 105 64. 62. 60. 58. 56. 54 SIREN MANUFACTURER'S 120 63. 61. 58. 56. 54 52. RATINC = 125 dBC 135 64, 62. 60. 58. 56. S '* . 150 63. 61. 58. 56. 54. 52. 165 63. 60. 58. 56. 54. 52. 180 :63. 6t. 59. 57, 53. 50. 195 65. 62. 60. 57. 55. 53. 210 64 62. 59. 57 54. 5'. 225 69. 67. 65. 62. 60. 59. 2 40 69. 67. 65. 62. 60. 50 255 69. 67 65. 62. 60. 59. 270 285 69. 67. 67 64. 65. 60. g. s.. 60. 54. 59. 5'. Computer Analysis by: 300 65. 62. 59. 56. 53. 50, 315 67. 65. 62. 59. 56. 53. 330 e6. 64. e2. 59. 56. 52. 345 S6. 64. 60. 56. 54. 52. I j [, Acoustic TECHNOLOGY INC. t
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*4 94 34 85. 31. 77. Tu. 7. 66.
15 '"7. '24 9". 89. 85. 81. 78. 7 "- 72. 70 30 07. 100. 96. 91. 87. 83. 78. 74, e9. ,7. 45 '"T. *00. 96. 91. 67. 83. 80. 75. 75 67 60 ' 7 . 100. 96. 9'. 87. 83. 80. 77 79 7 75 'U.'. 1H. 96. 91 86. 33. 79. 76. ?u. 7' 'M 9a
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210 ,ny.. 100. 96. 96. 87. 83, 80. 77. 79, 7, 225 :07. 100. 46. 91. 87. 83. SU. 77. 79. 7-240 '07. 100. 96. 91. 87. 83. 80. 77. 74. 7*.
; 255 07. !00. 96. 91 87. 83. 80. 77. 79. 7 g 270 07. 99. 99. 89. 85. 8;. 77. 74. 77. 68.
p285 07. 99. 93. 88. 89. 80. 77. 72. 69. 67. o 300 '06. 47. 9: 86. 82. 77. 72. 69. 66. 64. c 315 ;U6. 97. 9;. 86. 32. 78. 74. 69. 66. 65.
]**330 ;06. 47. 9'. 86. St. 75. 72. 69. 66. 6u.
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. 45 63. 59. 56. 53. 50. '7.
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- 69. RATING = 125 dBC 120 69. 67. 65. 61. 59, 56.
135 69. 67. 63. 59. 56. 50. 150 e. s 67. 65. 61. 57. 5'. 165 69. 67. 65. 61. 59. 57. 180 69. 67. 65. 62. 60. 59. 195 d9. 66. 64. 62. 60. 58. . 210 69. 67. 65. 62. 60. 59. 225 dw. 67. 65. 62. 60. 59. 240 69. 67. 65. 62. 60. 54, 255 e9. 67. 65. 62. 60. 59. h 270 69. 67. 65. 62, 60. 59. Computer Analysis by: i e6. 69. 62. 59. 5<. 56. 285
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75 %. 91. 87 83. 79 76. 72. o9. 90 107. 100. 9o. 91. 87 83. 79 7o. 71. co. 105 107. 100. 9o. 91. 87 83. 79 76. 72. 107. 100. os. 120 9o. 91. 87 83. 79 7o. 72. o8. 135 107. 100. 9e. 91. 87 83. 79. 76. 71. o7 d 150 107 100. 96. 91. 87 83. 78. 73. o9 107. o5. 165 100. 9*. 91. 87 81. 77 72. os. o5. 180 107. 100. 9o. 91. 35 81. 77. 72. oi. o5. 195 107. 100. %. 91. 87 83. 78. 74 107 100.
- 71. o8.
210 %. 91. 87 83. 79 76. 73. 70. 225 tv7. 100. 90. 91. 86 82. 78. 75. 72. 107. ei. 240 100. 95. 90. 86. 82. 78. 75. 72. os.
; 255 107. 100. 9G. 90. 36. 82. 78. 74
- 270 107. 100. 90.
- 71. es.
- 95. 85. 81. 78. 75. 72. 70.
- n 285 107. 100. 95. 90. 85. 81. 78 75.
$ 300 107 100. 72. 70.
95, 90. 85. 81. 77 74. 71. o8. c 315 107. 100. 9G. 90. 86. 82. 79 76.
~ 330 104. 73. 70.
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. 45 os. 62. 60. 58. 55, 53. Temperat ure s68*
In 60 e5. 62. o0. 58. 55. 53. R. H. =75 % j 75 o7. e4 o1. 59 57. 55. M ' 59, 55. 51. 48. 44 105 59 r o 55. 52. 49 45. SIREN MANUFACTURER'S 120 o5. 61. 58. 54, 51. 48. RATING = 125 dBC 135 So. 53. o3. e0. 49 4o. 150 o2. 58. 55. 51. 48. 45. 165 o1. 59 57. 53, 51, 48, 180 o 3. o!. 57. 53. 51. 49 195 oo. 64 61. 59 57 54 210 o7. 65. 62. 60. 58. 54. 225 o7. 64 62. 60. 58. So. 240 oo. 62. 58. 56. 54 51. c 255 .. 64 59 270 o2. 57 55. o7 65. 63. 61. 59 55. Computer Analysis by: 285 o7. e5. o3. 61. 57 54 300 cc. o4 o2. Se, So. 53, 315 M. oo. o. o2. 59, 55. 330 ei, ca. 59, 57. 55. 51. ' m o0. 8. 55. 51. 48. 45. 1 m I 1 @% Acoustic TECHNOLOGY INC.
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*07, 100 96, 91. 87. 83. 80. 77. 74 7 E"270 255 :07. 100. 96. 91. 87 83. 80. 77.
E,285 '07. 100. 96. 74. - 9i. 85. 81. 78. 74 69. 65.
'5 300 07. 100. 96. 91. 87 83. 80.
107. 100. 96. 77. 72. 68. 335 91. 87. 8!. 78. 75. I :07. *00. 96. 91. 87. 83. 72, 7 t. . 33o
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y 45 64 65. 62. 58. 54 5*. Temperature =68" p 60 e. 9 . 67. 65. 62. 59, 56. R . H. =75 %
< 75 03. 59, 57 55. 53. 5:.
90 105 04 62. 60. 58. 56. 54 3, 59, 55, 53, 53, ug, SIREN MANUFACTURER'S
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.t 67. 65. 63. 61 59. 57.
I 150 69. 67. 65. 62. 60. 59.
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I APPENDIX 3: Topographical Maps with 60 dBC Contours
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