Document bwa8eEppg4KMqJGKQzX0O8z1

Interoffice Communication To From P. C. Gowan G. D. Johnson June 3, 1977 Subject Benzene Sampling Design Update Attached are updated specification sheets and drawings which were affected by the decision to use high pressure piping for the fuel gas purge lines with the benzene sampling manifolds. While reviewing the vent collection design, it was noticed that should the fuel gas purge valve be left open while sampling the process stream, the fuel gas line would be overpressured. Thus high pressure piping and additional pressure gauges were added to indicate this situation to the operator. Making this change to update the benzene sampling design brings about consistency between both designs. Anyone having questions or needing further information, please advise. G. D. Johnson Environmental Health Engineer Approved W. J.^Ritter Chief Process Engineer mbr Enclosure CC: RDG RAC RHG WJR BRD RLP WAM SMF VAC GDO KJB MCD 000012223 CHANGES TO BENZENE SAMPLING Drawing No. LCCP-734-1 ]. Add pressure gauge, PG-11, on line 3/4"-FG-12-N-B2-l. Drawing No. LCCP-734-4 1. Change specifications for fuel gas lines as follows: (a) From 3/4"-FG-14-N-A2-l to 3/4M-FG-14-N-B2-10. (b) From l/4"-FG-15-N-A2-1 to l/4"-FG-l5-N-A2-1. (c) From 3/4"-FG-l6-N-A2-1 to 3/4"-FG-16-N-B2-2. (d) From l/4"-FG-l7-N-A2-1 to l/4"-FG-17-N-B2-2. 2. Add pressure gauge, PG-8, on line 3/4"-FG-14-N-B2-10. 3. Add pressure gauge, PG-9, on line 3/4"-FG-16-N-B2-2. Drawing No. LCCP-734-5 1. Change specifications for fuel gas lines as follows: (a) From 3/4"-FG-18-N-A2-l to 3/4"-FG-18-N-B2-2. (b) From 1/4"-FG-l9-N-A2-1 to l/4"-FG-19-N-B2~2. 2. Add pressure gauge, PG-10, on line 3/4"-FG-18-N-B2-2. MOD 000012224 *-'l " -- -- -- "-- -- -- -- -- -- -- -- -- ---- ---- ---- ---- ---- -- -- -- -- -- --- -- --- -- 00i/d? ISd -- 9SZV<i ' -- -- -- -- -- --- ------ -- -- -- ---- -------' ---- -- flou o<?Z 07%: o zL r .* ' s/ ooz 007 o o/ 'i 6 6 or' t' t * S//IO? -77e/l'/t'S` A""' 9t MS-//-*/-yjiT/e u Z'tt+'-M'&j-r/f e'i'Z r>5'Z S:L*. o o t <?rv- Lr * oz / i, tr* or;/ CO/ C* C// CO/ &5V5P or t^r <7;'t`S ft' "r?a `i~yys.*"/ ' 'l'4^' k`: ^ - ,V| . <>, >vj.*n_ /o:--i/s i( .7 oopspc-s zoeyf-?/- AZf/r /, ff t/, O/Z. G ZZ o ?J. O-Z/. <' S/- on / SZ- C i. '$.awu{/ oor; Oc7 S'5 soy// <oo r oo / , o&Z S&? 6 oy op se> QS/ S#/ orf-'Oe/ `fy-siy <> oV-Wtf-,,7f ?f*'7 "&jOw r//V ' O '/ * S'" <".'V rr-v-^3 oc-w/'.v -syayy/i> o'/*,.2/ 'A v'v r ' 2 ' r. or-ado -'<n ?**''/ S-i*/ Uv/S c/r*: ''//st'k/ CA'A-ul'S S, .'.'/O' // s/vT/iy 4f -r/c t v'M. &,*P-07 rr/. K^ c'r*?",/*'!/ ,>>ti', r it //. z-zft-s-or-Ws-r/, 4f v-7&crwV'X-?/i z-zr/'Sa'i^`jA y.-t'ry/.:.. . A r. -'t-'c* v'/af'vy'o fy, aZ < '/ O -- "r iZr v /1t- Of,- a '/*' ' Sf? & 65 50 Z * 'V'" Of/ SCZ <>4/ & o/? OlSd SSCJJ *d0 Koiisa O <?/ OlSd 8s?;j SOS' *^0 *du >j, 7rZ</y -r* ^oh 'O'ASf p2/y. '+/ .''"``Si's - -fsA ,, r/c C7~7`?.-s// *:'{/ A7 /r'S o o.L SOL cT< rJ * IV f/ crZ2~z-ff*'V<'S`i'4 3-Ary/ (J/f./z/V/'Z ?7rsrt> y-7.fn,\/S Q7,&-70'v'^S fWl7JX0Q jCtitY7*.r'"30 y'Vff'O-f'O-wt/tf'-"ti " / c/-v Sa -.SA y/C ? s r > v"-y_:y>> p -p/Z-S P '7 PTU SuiAOI^ -, yz- -f/. ,* 1 Kouw:ois3a a'jna.'iiio: ___ did r ' MCD 0 0 0 0 1 2 2 2 5 oo a<1* *f!>o. t 4/ -PIfGSl.. l 1 1 1 1 1 \ l 1 \ t 1 > tuo I i 1 1 ( 1 i l 1 1 1 1 /--I okr04--e3'4 Oioll OHl-n*t P. & N $ 1 v) N 'ft 0 K 0 \0 a \ta S >i '0X V 0 a ft ft 0 ft fe 0 ' ft s t'i 0 0 N 4 \ VCs'6r{ H\ 3 V!-i > 00 0 0 \ Plo<uAU*, tO/-i \3 *0 Jo V} ft o `>3 Vft ft NN k rn yy * s' Ss O rii _*. r>0-"1>,' 'o 0 iQd fc^' ftw '"1 V*) V0 >0 \ ) V1. * & \ sN<a Q <3>. o* 0 *n 0 s031 0 01 >y^1 . 0$ *S kj '< ?! 'h >k >v S5l ' 65 5? 0 irsv *ic i0 <0 'OVf -V 1 "J *\ 3 ^ '0 ft Ni N1S* s 4fc0l %'s $A Vi ufokt,. f if '".a u vf J H ei. >< x^ U \J> ft N-* ^G 1 B I? fV vS t2t Q 4 K <i \ 0 ft Q ?< ! I ft >r S ft j ^ t HH \ \ N ft 3 \ ft t-; No c N |3 i? VV) S'? 0 Vy Vv *Cl -i. 1^ ,3.c < ^ s> TV ^CJ 2! 4 1 3 1 v s: J , Jl ^ QVj 0) J 1 \ ft V) Si ywOUCh) T3 ru-33. 0 1S*x^'<J4r < <+ nS*^.0 k II Vk y s II gc s vVj;f'o: Q '* VjiN H^ 5 v* < ka s^ .< . in U) 1*1 fw ' ft1"''' i* ^ ? 'ii VKj 5% T o p Q> 'N 1 Ts o }W * ^ K H< -PtJ a 5Q ft- V- 1V-- V 1 X'-ftj 'ftft <<. s A V *> 'O "4 r<0N >. P< A 0 v>t * *5 I*<5> (Tv Nk. 1 V vV J ,t A n^ $* n'- 3: #i MCD 000012226 MCI) 0012227 ytgriT ENGINEERING CENTER A F E. NO ______________________ V PONCA CITY. OKLAHOMA SPECIFICATION SHEET PRESSURE GAGES DATE MADE BY APP'D 6Y svj~R W 0 NO INQ NO fleo. NO e. M.NOp o. NO. PI /^y/vr PROJECT6s/r' r/ess S'</- 1 2 TAG NO. 3 4 P&-S 5 />&-*) 6 P&-/Q 7 PCf'/J e 9 10 ii 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 35 37 38 39 40 41 42 43 44 45 46 47 48 49 50 NOTES REV / / / / RANGE AUX. TUBE Dial PORPEESRS. -o 6>oo <?-6oc* 0-6*0 0-5 oo *S'/S /&$ SERVICE Al^r //Z 7~SA)a A '-S tfp'tr - f-ra 5 - C-r*% S /Pf ^-T/S * ACCESSORIES GcS r*AtC:75.: /OO " / // ., / 'oCA'AO 5D S' P-'.'Ar SSaCAtAO MtPSSA ''S'P NOT -- - -- -- - MCD 000012228 V) 3i INSTRUMENT SOCIETY O? "I Rn ** SHEET . . . OF . r. , OA-JoJ OjZ/Z'ROs&A a//^ g/e DA-^o7 DESUr/w/s;^ MCD 000012230 000012231 SAMPLING PROCEDURE FOR DEMETHANIZER BOTTOMS AND DEETHANIZER BOTTOMS (LCCP-734-4) (THIS PROCEDURE REQUIRES THAT ALL 1/4" VALVES BE CLOSED BEFORE STARTING) 1. Check that a 500 cc (type ICC-3E-1800) sample bomb is connected in place. 2. Open the 1/4" needle valves (2) on the sample bomb. 3. Open the 1/4" valve on the inlet line to the sample bomb. The pressure will indicate on the inlet gauge. 4. Open the 1/4" valve on the outlet line and allow the sample bomb to purge with flow for fifteen seconds. 5. Close the 1/4" needle valves (2) on the sample bomb. 6. Close the 1/4" valve on the inlet line. 7. Close the 1/4" valve on the outlet line. 8. Open 1/4" vent valves (2) on the sample manifold. Check that both pressure gauges depressure to 12 psig. 9. Open the 1/4" M.O.G. purge valves (2). Note that the pressure rises on the pressure gauge (100 psig maximum). Purge the sample bomb con nections fifteen seconds. 10. Close the 1/4" M.O.G. purge valves (2). Note that the pressure gauges depressure to about 12 psig. This is the minimum pressure of the vent collection header. 11. Close the 1/4" vent valves (2). 12. Break union connections and remove sample bomb. Install a returned sample bomb In its place. This assures the system is kept completely closed at all times. NOTE: If the fuel gas inlet pressure gauge ever reads above 100 psig, look for an open valve on the sample manifold as process gas may be depressuring into the fuel gas system. Mod 00012232 SAMPLING PROCEDURE FOR CAUSTIC TOWER OVERHEAD (LCCP-734-5) (THIS PROCEDURE REQUIRES THAT ALL 1/4" VALVES BE CLOSED BEFORE STARTING) 1. Check that a 250 cc. (type ICC-3E-1800) sample bomb is connected in place. Check that the 1/4" vent valve is closed. 2. Open the 1/4" needle valves (2) on the sample bomb. 3. Open the 1/4" inlet valve. Note the pressure indicates on the inlet gauge. 4. Open the 1/4" outlet valve and let the sample bomb purge with flow for fifteen seconds. 5. Close the 1/4" needle valves (2) on the sample bomb. 6. Close the 1/4" inlet valve. 7. Close the 1/4" outlet valve. 8. Open the 1/4" vent valve on the sample manifold. Check that the pressure gauge depressure to 12 psig pressure. 9. Open the 1/4" M.O.G. purge valves (2). Note that the pressure rises on the pressure gauge (85 psig maximum). Purge the sample bomb con nections fifteen seconds. 10. Close the 1/4" M.O.G. purge valves (2). Note that the pressure gauge depressures to about 12 psig. This is minimum pressure of the vent collection header. 11. Close the 1/4" vent valve. 12. Break union connections and remove the sample bomb. Install a returned sample bomb in place of the filled bomb. This keeps the system com pletely closed at all times. NOTE: If the fuel gas inlet pressure gauge, PG-10, ever reads above 85 psig, look for an open valve on the sample manifold as process gas may be depressuring into the fuel gas system. Mod 0o 01 2233