ML20197D916

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Partial Response to FOIA Request for Insp Repts,Info Notices & Automatic Sprinkler Corp of America Literature.App a Documents Available in Pdr.Forwards Documents Listed in App B
ML20197D916
Person / Time
Issue date: 05/08/1986
From: Grimsley D
NRC OFFICE OF ADMINISTRATION (ADM)
To: Murphy S
NUCLEAR INFORMATION & RESOURCE SERVICE
Shared Package
ML20197D921 List:
References
FOIA-86-262 NUDOCS 8605150101
Download: ML20197D916 (13)
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Text

{{#Wiki_filter:. p age UNITED STATES o NUCLEAR REGULATORY COMMISSION [ W ASHINGTON, D. C. 20555 n 3 1 a \\s,..... # Ms. Stephanie A. Murphy III I EEE Nuclear Information and Resource Service 1616 P Street, NW, Suite 160 IN RESPONSE REFER Washington, DC 20036 TO FOIA-86-262

Dear Ms. Murphy:

This is in regard to your request, pursuant to the Freedom of information Act, to which the NRC assigned the above number. X This is a partial response to your request. We will notify you upon completion of search for and review of any additional records subject to your request. The staff has completed the search for and review of records subject to your request, and this is the final response to your request. The NRC has no records subject to your request. X Records subject to your request are available for public inspection and copying at the NRC Public Document Room (PDR), 1717 H Street, NW, Washington, DC 20555, as noted p on the enclosure (s). The PDR accession number is identified beside each record description. X Records subject to your request are being made available ~ for public inspection and copying at the NRC Public Document Room (PDR), 1717 H Street, NW, Washington, DC 20555, in the PDR file folder under the above number and your name. These records are listed on the enclosure (s). We are enclosing a notice that provides information about charges and procedures for obtaining records from the PDR. Sincerely, Donnie H. Grimsley, Director Division of Rules and Records Office of Administration i Enclosure (s): As stated hOj 1 860508 DR MURPHYB6-262 pyg

Appendix A F0IA 86-262 In the PDR 1.. 09/25/84 IE Inspection Reports No. 50-010/84-13(DRP); 50-237/84-16(DRP); 50-249/84-15(DRP) PDR ADOCK 05000010Q 840925 84102402278 2. 02/15/85 Inspection Report No. 50-341/84-49 PDR AD0CK 05000341Q/F 850215 85030600708 3. 03/22/85 Inspection Report No. 50-341/85-12 PDR AD0CK 05000341Q/F 850322 8504040420A 4. 04/03/85 Inspection Report No. 50-341/85-14 PDR AD0CK 05000341Q/F 850403 8504090282A I e r

Appendix B F0IA 86-262 To be released entirely 1. 03/02/84 IE Information Notice No. 84-16, " Failure of Automatic Sprinkler System Valves to Operate" (2 pages) 2. 06/15/84 Portion of Inspection Report No. 50-255/84-04 (Ltr from W. D. Shafer to R. B. DeWitt Section 7, " Independent Inspection Activities") (3 pages) 3. 07/20/84 Portion of Inspection Report No. 50-263/84-11 (Ltr from R. L. Spessard to C. E. Larson and Section 6, " Surveillance Test of Deluge Fire Suppression System") (4 pages) 4. Undated Automatic Sprinkler Corporation of America (ASC0A) Literature on Problem Valves and Related Technical Information (9 pages) 5. 12/12/85 ASC0A Notice Regarding Deluge, Pre-Action and Foam-Water Deluge Sprinkler Systems: Model C Deluge Valves (20 pages) 6. 03/24/86 Memo from G. W. Roy to Multiple Addresses w/ attachment IE Information Notice No. 86-17, " Update of Failure of Automatic Sprinkler System a Valves to Operate" (3 pages) 4

~ 8pths/dt coaronAttoNOFAMENCA B y. ( ', GENERAL INDEX RATE-OF-RISE Page G-Introduction. ........1 Thermal Syt.em. Rate.of. Rise Basic Components and Their Function. 2 System Application Mercury Checks and Their Operation...................... ..3 Adjustments of Rate-of-Rise Detection Vent Ratings. Release Settings, Mercury Check Pressure Setting. Location of H.A.D.'s'. Location of Sprinklers and Nozzles 4 i Deluge Sprinkler System (Unsupervised)... . 5 thru 8 i General Description......... 5 Design Features...... . 5 Detailed Description....... 5 Approvals.. 5 Ala rms.......... 6 Procedure for Resetting Deluge System after Operation 6 Procedure for Heat Testing the Deluge System. .6 Manual Operation 6 1 6" Deluge Setup Drawing 7 2%" Deluge Setup Drawing. 8 },5) Suprotex-Deluge System..... . 9 thru 18 Low Air Trouble Alarm... ....9 Air Line Restriction .9 Air Line Mercury Check. 9 Air Supplies Electric Air Pump Panel-Standard... 10 Electric Air Pump-Explosion Proof.. 10 Owners Air Supply. 10 Nitrogen Gas. 10 Procedure for Resetting Suprotex-Deluge System after Operation. 11 Procedure for Testing Break Glass Station. 11 Procedure for Manual Pull Trip Test 12 Procedure for Operation Test of Standard Suprotex-Deluge System. . 12 Procedure for Low Air Pressure Test of Suprotex-Deluge Valve.,.. 13 Procedure for Testing Quick Opening Valve. 13 Installation Caution. 13 Water Proofing. 13 Model "C"" Deluge Valve (Cross Sectional lliustration for Parts List) 14 Model "C" Deluge Valve-Bill of Materials. 15 Suprotex. Deluge System with Fixed Temperature (Pilot Head) Operation . 16 Operation. 16 Procedure for Testing Fixed Temperature (Pilot Head) Operation 16 6" Suprotex. Deluge Setup Drawing 17 2%" Suprotex-Deluge Setup Drawing.. 18 Pre. Action Sprinkler System (Unsupervised). 19 thru 22 (, General Description. 19 Design Features. 19 Operation. 19 .a pprovals. 19 Detailed Description hO coeroaADONof AMAW.A O UTHo usa 1 73 _j

~ M 6)>tinldt coePORATION OF AMERICA g 1 b - I Page G-t Alarms. 20 Manual Operation 20 Procedure for Resetting Pre-Action System after Operation 20 Procedure for Heat Testing the Pre-Action System. 20 l 6" Pre-Action Setup Drawing 21 2%~ Pre-Action Setup Drawing. 22 Suprotex Sprinkler System (Supervised Pre-Action) 23 thru 30 Design Features. 23 Detailed Description-Air Creck Valve 24 Fusible Element 24 Operation of System and Alarms. Automatic Fire Protection 24 Manual Operation 24 3 Operation from Break in Thermal System 24 Operation from Break in Sprinkler Piping 24 Action of Mercury Checks from Break in Thermal System. 24 Monitor Switch 25 Fire Alarm 25 Thermal System Air Line Components. 25 Piping System Air Line Components 25 Detailed Information on Air Supplies. 26 thru 27 Electric Air Pump Panet-Standard. 26 Electric Air Pump-Explosion Proof 26 Owners Air Supply. 27 (", Nitrogen Gas 27 Procedure for Resetting System after Operation 28 g Procedure for Heat Testing Sprinkler System. 28 6* Suprotex Setup Drawing. 29 2%~ Suprotex Setup Drawing 30 Clearance Dimensions for Mercury Check CaNnets and Header Bar Cabinets. 31 Design Information Installation. 32 Number of Mercury Checks per Valve. 32 Number of H.A.D.'s per Mercury Check. 32 Mercury Check Settings and Vent Ratings. 32 Number of Systems per Air Supply 32 Test Apparatus. 33 thru 37 Electric Test Set. 33 Operation. 33 Ordering Procedure 33 Manometer (9" & 18~) General Description. 34 and 35 Filling of Manometer 35 Suprotex Three-Way Manometer. 36 and 37 Rate-of-Rise Components. 51 thru 103 Description of Component Parts (Alphabetically Arranged) See Index Preceding Individual Listing ( Rules for Spacing Heat Actuated Devices 141 thru 164 (Old Pages) Special Systems. MuMhtladdt coeconAnoNof AMERICA O UTHo usa 171

MM t/det CORPORADON OF AMECCA DELUGE SPRINKLER SYSTEM "'8 UNSUPERVISED The Deluge System of open sprinklers can be in-General Description stalled in heated or unheated extra-hazard occupan-cies, where an instantaneous discharge of water is The Deluge System is comprised of open sprinklers necessary. attached to a network of empty piping, and therm When it is desirable to have automatic (sealed) pneumatic RATE-OF-RISE heat responsive actua-tion (unsupervised). sprinklers cover areas of ordinary hazard and open sprinklers or nozzles cover areas of extra-hazard a Heat Actuated Devices (H.A.D.'s-described at combined system is installed. In that case, both the beginning of the RA TE-OF-RISE section) are automatic and open sprinklers are supplied by the strategically located to lest detect fire in all areas same valve, and actuation of the valve is from one T M del C Deluge Valve, located in a heated area or a heated Valve House, withholds the water from the piping. DETAILED DESCRIPTION NOTE: The unsupervised detection system may be The Model C Valve is used for both the open head used only with special approval of authorities (Deluge) system and the sealed head (Pre-Action) having jurisdiction. system. It is a latched clapper type valve used to restrain the flow of water to the sprinkler piping. The Design Features valve is tripped by a release mechanism that drops a When the Model C Deluge Valve trips, water weight on the Latch Arm which pivots to release the enters the sprinkler piping for instant discharge clapper. As water flows through the valve into through the open sprinklers. At the same time water sprinkler piping, the Latch is pushed downward to will flow through the Alarm Line to the Water Motor seat on the Valve Drip Seat Ring, sealing the Valve ,l Alarm to sound a fire alarm. Drip. ~' The early alarm mak.es possible evacuation of per-The Clapper is ker,; from reseating by Clapper sonnel from the fire area. Stop Lugs on the inside of the valve body. In order to The instant deluge of water on the entire sprin-reset the Valve, the Handhole Cover must be removed, klered area through open sprinklers or spray nozzles the Clapper Facing and Seat Ring cleaned, and the is especially adaptable for quick extinguishment or Clapper must be lowered on its seat manually. (See control of fast spreading fires. Resetting instructions) ~. puracnwmo osvus RA-(1 GDOUPS ' .M!%*.2"L N uoren -g oem s== teas war

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t g " N*..'.t" WO (}%" I: M ' %D C*a uoon-c J-Ns"" saws e nca db- .'iE*d'o,04 J U"s47[ _dM goaaet 8 %2 II r ,t au - ]- v4tvs y y @g'am)b. weewr sweveu eaam m y,, i Ai ll i w g =58- ) Approvals }^g / The Unsupervised Deluge System is not generally ch, recommended and may be installed only by special approval from the authority having jurisdiction. See NFPA pamphlet No.13 for further information. t7aFn 7/d9t/n/4r coerceanon or Ameica o

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6. Close the Main Drain Valve and open the Main Control Valve. Check to see that the Clapper does not leak at Valve Drip Opening.

ALARMS

7. Open Alarm Control Valve, if it has been closed, Alarms are provided by electric and hydraulic (See SB445) and test Fire Alarm by opening dsvices.

Alarm Test Valve. The Weight Switch is auto-To afert maintenance personnel and the fire de, matically reset when weight is up. pirtment, an electric alarm may be used. It can be

8. Test the condition of the water supply by fully tctuated by a Weight Switch not dependent on opening the 2" Main Drain Valve and observing flow of water, or by an electric switch Model 86, the residual pressure reading for comparison diaphragm operated by flow of water through the and evaluation.

(!:rm lirie. This is optional. The hydraulic alarm consists of a Water Motor PROCEDURE FOR HEAT TESTING THE Gong usually located on the outside of the building DELUGE SYSTEM n:ar the system valve setup. Alarms should be tested periodically to make sure

1. Connect Electric Test Set (See Test Apparatus).

they function as required. This can be done without CAUTION: THE ELECTRIC TEST SET MUST tripping the deluge valve. NOT BE USED IN PLACES WHERE in order to test the water flow alarms, a Test Valve EXPLOSION-PROOF OR DUST-his been provided. It brings water from below the PROOF EOUIPMENT IS RE-d: luge valve Clapper, bypassing the valve, and QUIRED. USE HOT WATER (175'F OR MORE) IN A CONTAINER through the alarm line. The weight switch may be WHICH CAN BE PLACED AROUND tested by lowerinp the weight manually after releas. THE H.A.D. SO AS TO SUBMERGE ing it by use of the manual pull. R HOT WATER. For this the water supply MUST BE SHUT OFF. A flow test through the Main Drain Valve should . I se ControHing Gate Valve and open 2" Drain ( elso be made periodically. Valve for duration of test only. \\

3. Place Electric Test Set or Hot Water m contact with an H.A.D. connected to Mercury Check, A, (indicated by letter **A" on metal tag fastened to PROCEDURE FOR RESETTING DELUGE H.A.D. guard) and observe time in seconds for SYSTEM AFTER OPERATION dropping of the Release Weight.
4. After allowing sufficient time for the pressure in (See Setup Drawing) the H.A.D. System to compensate, pull out Reset
1. Close Main Control Valve (OS & Y or PlV), only Lever and raise Release Weight into " set" after making sure that all fire has been position.

extinguished.

5. Select an H.A D. connected to each of the other
2. Open Main Drain Valve and empty system of all Mercury Checks and repeat heat test, resetting water, being certain that all low portions are Release and Weight each time.

drained through auxiliary drain valves or plugs.

6. Close Main Drain Valve and seal open Con-
3. Remove Handhole Cover (See SB445), inspect trolling Gate Valve.

and clean tinned surface of Seat Ring and

7. Test condition of the water supply by fully rubber facing of Clapper.

opening Main Drain Valve and noting that drop USE NO OIL, GREASE OR OTHER COM-cn Water Pressure Gauge is normal. POUND ON EITHER RUBBER CLAPPER FAC-ING OR SEAT RING. MANUAL OPERATION Relecse the Clapper to its Seat Ring by dis' A manual pull handla mounted on the side of the engaging the Clapper Stop from the Clapper Release Enclosing Box may be operated to manually Stop Lugs inside the valve. trip the System Valve. A break glass Manual Pull

4. Remo* - ) uter Enclosing Box Cover and reset Box is available to prevent tampering. This is op-the *
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.g outward and upward on tional. (See setup dwg.) the ' r. ' f a ' if t Release Weight until it By connecting a cable from the manual pull rod to enga 't.; '..eleasing Lever, at the same handles or rings located away from the system valve, time pu clapper down. Check to see that the the valve may be manually tripped from remote Clapper is latched. locations.

5. Replace Handhole Cover and tighten nuts evenly.

Another method may be provided by the use of a Remote Control Station (a break glass station). (k 8aFmaFs $>t/n/4t copoeAnoN OF AMERICA O, trTHo U $ A. 6 69

1 Mht/n/dt compotATION OF AMENCA p. PR E-ACTION operation SPRINKLER SYSTEM The Thermo Pneumatic System preforms the following functions: UNSUPERVISED (See approvals below)

1. Detects abnormal temperature rise at the start of a fire.

General Description

2. Trips the Release, which The Pre-Action System is comprised of auto-
3. Drops the Weight, which matic, sealed sprinklers attached to a network of
a. Opens the Valve to fill the sprinkler piping empty piping, and thermo-pneumatic RATE-OF-and sounds a water operated alarm, RISE heat responsive actuation.
b. Operates the Weight Switch to sound an Heat Actuated Devices (H.A.D.'s-described at electric alarm (horn) or to perform other electrical functions.

the beginning of the RATE-OF-RISE section) are strategically located to best detect fire in all areas The Pre-Action System can be used in combina-tion with Deluge operation by installing sealed i Te odel C System Valve located in a heated a ard s area or a heated Valve House withholds the water from the piping. The Valve trim is arranged so that the water oper-ated alarm can be tested without tripping the valve. Des.ign Features A Manual Pull is provided for manual operation of the valve. Tripping of the Model C Valve permits early Since the Thermo-Pneumatic System is not filling of the sprinkler piping and an early alarm, supervised with air pressure, the Compensating making possible manual extinguishment before Vent is open to the atmosphere with atmospheric sprinklers operate. pressure in the H.A D.'s and tubing. The Sprinkler The Pre Action System offers the following piping is also open to the atmosphere through the advantages: Valve Drip. (See illustration of valve cross section.) e Pre-Alarm and early filling of piping in case of fire. The omission of automatic supervision means j e Protection against freezing and water damage due that, should damage occur to the H.A.D.'s or air to piping damage while in ready condition. tubing, there is nc trouble alarm to indicate that the e Evacuation of personnel from the fire area as a thermal system is not operational and the system result of an early alarm. will not operate automatically. .,, NEAT ACrUATED DEVICES M A O 000VPS mass ese e e e sue a.e N STALED SPQlNWLEPS ON EMprY PtPING WATER MOTOQ 3 ALAGM 6N sN HEATED OR UNHEATED AREA

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' Q~ jl = =. b]M oo,, t. e Jdd d ,L , '", j b -1 ya '_C8""'= M > TJ,.~k.,c-Am. 4.. -) s x. c N Approvals "E" 22 V The Unsupervised Pre. Action System is not gen-hv W j y ( erally recommended and may be installed only by j'~ ( special approval from the authority having jurisdic-tion See NFPA pamphlet Nn 13 for further in. format on l

Mak8pt/nd/et, coePostAnoN CF AME%CA g. O-20 3 -1 PROCEDURE FOR RESETTING PRE-ACTION DETAILED DESCRIPTION SYSTEM AFTER OPERATION The same Model C Valve is used for the sealed-

1. Close Main Control Valve (OS &Y or PlV) only head (Pre-Action) as for the open head (Deluge) after making sure that all fire has been ex-system. It is a latched clapper type valve used to tinguished.

restrain the flow of water to the sprinkler piping. The

2. Open Main Drain Valve and empty system of all valve is tripped by a release mechanism that drops water, being certain that all low portions are the weight on the Latch Arm which pivots to release drained through auxiliary drain valves or plugs.

the clapper. As water flows through the valve into the Remove pendent sprinklers and empty their sprinkler piping, the Latch is pushed downward to connecting piping of trapped water. Replace all seat on the Valve Drip Seat Ring, sealing the heads affected by the fire. Valve Drip.

3. Remove Handhole Cover (see illustration),

The Clapper is kept from reseating itself by inspect and clean tinned surface of Seat Ring y Clapper Stop Lugs on the inside of the valve body. and rubber facing of Clapper. In order to reset the Valve, the Handhole Cover must

4. Remove outer Enclosing Box Cover and reset the be removed and the Clapper must be lowered on its Release by pulling outward on the Reset Lever.

seat manually. See Resetting Instructions. Lift Release Weight until it engages Weight Releasing Lever. Check to see that the Clapper ALARMS is latched. Alarms are provided by electric and hydraulic

5. Replacc Handhole Cover and tighten nuts evenly.

devices.

6. Close the Main Drain Valve and open the Main To alert maintenance personnel and the fire de-Control Valve. Check to see that the Clapper partment, an electric alarm may be used. It can be does not leak at the Valve Dnp Opening.

E*" actuated by a Weight Switch not dependent on flow of water or by an electric switch, Model 86, dia-by opening Alarm Test Vs3ve. Weight Switch is phragm operated by flow of water through the automatically reset when Weight is lifted into os tion. alarm line. Both are optional. The hydraulic alarm consists of a Water Motor and

8. Test the condition of the water supply by fully Gong usually located on the outisde of the building' o ening the Main Drain Valve and observing the near the system valve setup.

residual pressure reading for comparison and evaluation. Alarms should be tested periodically to make sure they function as required. This can be done without The Pre-Action System has a Water Pressure j tnpping the valve. In order to test water flow alarms Gauge installed above the Clapper as well as below. a Test Valve has been provided. It brings water from When the Valve trips and water flows into the piping system the upper Gauge gives visual confirmation below the clapper, bypassing the valve, and through the alarm line. that the piping is filled with water. Simultaneously the Water Motor Alarm will sound. A flow test through the Mam. Dram. Valve should Should the Alarm be inadvertently left in closed also be made periodically and the pressures recorded osition, the Gauge would be the only visual for future comparison and evaluation. indication that the System has tripped and is filled with water. MANUAL OPERATION The Gauge below the Clapper indicates the water A manual pull handle mounted on the side of the supply pressure. Release Enclosing Box may be operated to manually trip the Systte Valve. A break glass Manual Pull PROCEDURE FOR HEAT TESTING THE Box is available to prevent tampering. This is op-PRE-ACTION SYSTEM tional. (See setup dwg.) The Heat Testing procedure as shown on page G-6 By connecting a cable from the manual pull rod to applies to all RATE-OF-RISE Systems. ~ h:ndles or rings located away from the system valve, This Test should be made periodically. The the valve may be manually tripped from remote Controlling Gate Valve should be closed only for the g locations. duration of these tests. Another method may be provided by the use of a Remote Control Station (a break glass station). (7aGnaPl'8pt/nl/et coeconAnON oF AWilCA O tmto U S A 649

e ALARM SWITCH optional TO AL ARM-t B r.. Dd MU y b PQ-M X 2 GALV - ALARM LINE STRAINER 155-075 0 250 LB WATER GAGE (PRE-ACTION ONLY ) l :, g ' -uXhXMT l-4 SOG l-4 P _ u xg_3 GALV i-%x3 w ( l ~ C ::3 "- 1 4 i ~ g i a

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MANUAL PULL box n - '~ 64800G optional l X5' x 4 T-4 o'o 4 x 3 GALV - -QEAR ' ' ~ ~ ~ M X 2h GALV 4 X 2h GALV'.- suxuxaT MC 4'~ s --1.' gg M L ( (O. V I EW-@ 'M x 2 GALV Quu 4 x 3 GALV ', s M X 2 GALV s ht- ? 4 x 9 GALV p j b X 3h GALV-- q -- -

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([ r "'i I{ g o 1 \\ c,, ~ gEDER 94.650 h X IOW GALV a s g U X 2'-3Pi DWG. 76-0 A SERVES THE FOLLOWING BILLS -o OF MATERIAL : 4h B.M. 70 -D 6 A - DELUGE VALVE TRIM. .'l BM 76 -P-6 A -PRE-ACTION V^ LVE TRIM. Dws. No. 76-6A 9-20 60 {Cx % n n,~ ~. m w w e e ~ a a w m s s a w e r u m u y a w* e c m :m y=.. ~

u = b kWW'WWNW9[W9C"gyd*ttNC'q4f:5-&Q;- as.,ggg;y_3;a:mwnpyge >= ,a w =- 4 75-183 BULLETIN HOLDER woVNT ON RISER AS NEAR A00vt VALYC AS POS$1BLE l-B + 3* N-- ) 250 Li / (PRE-/ / i-w s. ./ l '4 P g 8-%X ' Tr ~ Q-s ALAAM CONTAOLVALVE g 3 _7 --PP l [ :-,,3 1 I ALARM TEST VALVE '] uosa [-{ff, h7 M x3h GALV-4 TN< - LEFT SID ( ) M X 2 GALV N VIEW MG Y, N =, bxk X h T' Q, 2 P - - -- - d ~ [ ll hX N 250 LO / 1 {i- ~ ~El. WATER GA P MX GAL y k*'4 giy % SO e iM x 3 s K J b k/ l l L-p i WALL o, Mn 2; f,, g NM r"} I'. ~ Np-MAIN DAAIN VA LVE e

CONTROLLI NG GAT E, VA LVE T~ ii~ "_ _ _4.

-..J 2 x 3'4 / r --t 2 x 2'-4h*- y -- -h'- - - " 2,0 - 2 x 6'4' i 1 % x 2'-36* 1 X14Y2 - l Y T~~ ~ 3 t h C y' X 4 Vz g CL 2 CL ' ~ 2U r mmer s,i c in,

~ ~ ~ ~ ~ ~ ~ gg4 p13$FMpNi$r.QNeM5:k@. NbN j hh;hh&M?2WNME00%%WS?N$OWSS 5 75-183 BULLETIN HOLDER MOUNT ON RISER AS NEAR ABOVE VALVE AS POSSIBLE f -_j B + 3' TW l i i i e i i e , (PRE-ACTION ONLY'. i 'l 250 LB WATER GAGE l'1 / t- % SOG r l- % P l l-%x3 AL ARM CONTROLVALVE i h-~ - ALARM TEST VALVE => [ l i 4 0SAY l h X34 GALV ,f'4' - % T- .f, I % X 2 GALV M ' t h* 4, - I.- N - I gg N .g.. ax3 I -- LGPT SIDE a- /tD ~ W x o...... N vigw 4 x 4 X h f4. l 8 4 P -~~ '-

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250 LB. ~ a x 3P2 GALV C', WATER GAG f I 4 xWXWT %SOG-l Pz P g l-to*h _ H % P' r_ ,. g ,.<'l - hl-k_ g,[b - l'- 3 ' I4 T / I - r

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IW A MAIN DRAIN y __ - mj s b._1_ I. i VALVE J 1 Q /auxr Ilv/ id x 3.- obxa' th x 2'-aW5 inx3W--.~ g-~c- ', in c c ..c ' ' E X 3"2 V Id x i% Xiv2T e' 14 U /f( 1% L IWCL ' ' -14x24 14 Lys (p-j ;'

P .c, y n e i O f--ALARM SWITCH (OPTONAL) i / (ENGNEER TO ORDER ON EWa 86-B) TO ALARM- / ,../ f.I N _) 4U

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,K P2 P - 17 % X 2 GALV ALARM LINE STRAINER 155-075 B I X W CO -- d t -4XhXhT ~ --% X l'- 3" GALV ) e5 P l l I 4 hC l ,p IXh Xh T _ (t % X 2P2 GALV-s i ~ MANUAL PULL BOX W - N X h GALV 64100 G (OPTIONAL)

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.h..-- 's X XWT hl*t 0 Egj'$xdkdb M E c 'g 2 GALV g 4x*,*eA mr h X 3 GALV ..... N* ~ 3 - -- CD M p _ p. ChLEEDER 94-650 ~ '4 x 4 GALV ~' g 7 { g = h - --/ .c 2 .t Va L - il N Yz u gFt NW x6 Pa GALv QEAQ VIEW DWG. 76-2 A SERVES THE FOLLOWING BILLS OF MATERIAL: O N O M 76 -D-2A - 2 P2 DELUGE VALVE TRIM B M 76 P-2A - 2 P/ PRE-ACTION VALVE TRIM Dwg. No. 76-2A ~ 11-2-60 . i. 4-O e w n m e, g. m _ m m g m m. m..,_, nw..=.. E_}}

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