Document 50a5JqwLV8aMXO4r6q47B9Qxz

/ 'TO Monsanto inamI A tOCAftONj DTS*r V >sa,c- -tUL -u HLo. ^a_Lb. | ^ ` 1-^ \ W. W. Latimer - 0-13 ^u4Jl-- 0*Tt SUUICT tCMMNCC November 23, 1983 Nitrogen Hose Stations " G. Daues T. Ryan J. Trafton SHAC TO : G. W. Bostick G. A. Danner R. A. Hernandez D. D. Kos H. Lacy G. A. Orum W. H. Triplett All nitrogen hose stations in the plant should comply with Procedure Bulletin P-0126, copy attached. Please review all nitrogen stations in your area of responsibility and determine the total number of stations and the number that do not comply. Also, determine the cost and timing to obtain compliance, if necessary. I need your response by December 8, 1983, using the following chart. Let me know if X can help. Person W. W. Latimer for SHAC Number Number Not In $k Cost to Date To S tyrene Utilities HCN Complex Methanol Acetic Oxo Esters PA Lactic AN Mat'l. Hand. Environmental Kos Orum Conrad Hernandez Hernandez Lacy Lacy Lacy Conrad Triplett Bostick Danner 4o lo Si 1C) l <a n *) 21 .4-0 . 7S S 9K Doge, HcfT 4-Uw*. 31 "7 31 3 2. -o ~-o 1 o 40* 37 d 3,2 -SA 2.6 14,3 2-is-sa 3-1-64- .7 t2-3J-a ,2. --o - *~o -- 12-3 1-8 4- -- -- U&fto *0 Tt O tx. -- 2.4 2 - IS-64 6.5 3-IS-64- O-- LAM002772 SC 001569 PROCEDURE BULLET IN--TEXAS CITY PLANT P-0126 NITROGEN DISTRIBUTION c I. PURPOSE This bulletin establishes a procedure for the safe, efficient and economical distribution of nitrogen. II. SCOPE A This procedure covers all users, or future users of nitrogen. Nitrogen is supplied by pipeline from Big Three Industries; supplemental and/or back-up nitrogen is supplied bv wav of an in-plant liquid nitrogen vaporizing svstpm located at Power II. - ;: Nitrogen is piped directly to departments requiring it. A user is defined as any department with personnel having authority to open valves on nitrogen lines anywhere in the department.' A This procedure covers all nitrogen brought into the plant by tank truck or tank car where the nitrogen pipeline distribution system is used. It does not cover nitrogen brought into the plant for purposes where the nitrogen distribution system is not used. C III. RESPONSIBILITY A. Pipeline The Utilities Department is responsible for nitrogen distribution headers up to the battery limits of using departments, or up to, and including, the first main block valve off of the header. Using departments are responsible for piping systems from the header block valve and inside battery limits. A using department is also responsible for piping systems taking nitrogen through its meter." This is true even though the pipingleaves a using department's battery limits.' *> A: -One exception to the above responsibility'definition is the system sup- -i . plying the South 22 Tank Area and Dock 1 only. The Utilities Department will assume operating responsibility for the meter, backflow preventer, and sub-header. ... , . -v: Vr-' 001570 B. Supply o co "The Utilities Department is. responsible for supply of nitrogen at present . supply capabilities. , . - . Big- 3 Corporation is contracted to supply the plant with up to 475 k SCFH ` of nitrogen. Big 3 can and normally will peak up to 650 k SCFH if requested. -It is important to remember that they have no obligation to exceed the contract amount of 475 k SCFH and that they expect advance notification re C garding plant demands above contract level. For this reason the Utility Department must be notified in advance of above normal nitrogen needs. ; ORIGINAL ISSUE- 10/15/74 LAM002773 REVISED: 5/3/82 &e-*/\ PAGEJ-OF-L:^ PROCEDURE BULLETIN--Texas city plant NITROGEN DISTRIBUTION p-0126 The Instrument Department is responsible for making a quarterly inspec tion and an operational test of each back flow preventer. The results of each test and inspection will be reported to the respective owner. E. Safety 1. Repairs The owner of a piping system is responsible for periodic inspection and repair of his nitrogen piping and elimination of abandoned nitrogen piping. 2. Cross Contamination Owners are responsible to see that the nitrogen distribution system is not contaminated from within an owner's system. . 3. Installation Standards . Owners are responsible for conforming to installation standards. (See Appendix A, B, and C for information only.) All new work must be made to conform to the then existing standard. 4. Drawings 4 ,, ,/; f The owner/user is responsible for the safety and conservation of nitrogen within his department or owned facility. An annual review of nitrogen uses and updating of distribution drawings is gpod prac tice and is strongly recommended. Engineering Services - Design is responsible for supplying drawings, on request, for review and up dating by unit supervision. Engineering Services is also responsible for updating the drawings as directed by the owner and reissuing cor- rected drawings. V-:. ""F. Metering `J : All user's systems must have an accounting meter at their "battery limit -- --(or-equivalent location) to record total nitrogen use for cost distribu tion. The meter must also give the instantaneous usage for purposes of .rate coordination. Any addition to nitrogen system must meet these re quirements. IV. PROCEDURE A. New Installation Any addition to the present nitrogen system must be approved as follows: SC 001571 ORIGINAL ISSUE: 10/1^/74 | REVISED: 5/3/82 LAM002774 PAGE JLofJ--- Monsanto CO PANY hydrocarbon* division ngiftering Construction-Maintenance Spec NITROGEN CONNECTIONS dot* Sept. 1, 1960 APPENDIX A P-0126 G S -06.8.107 CASE I: INSTRUMENT CASE PURGE In-battery supply line CASE II; HOSE STATION In-battery supply line In X CL. 102 r<Zto. Initq. f (^AnZM2&Q-- j ||J5Tf2.| r-u 04*51= . _____ 4. 1 *J xr), Pua<3E CorAM 1ST (SI2. J vy IT-H | W.T&fZA L."' Flow Va l v & r-P < 44ost='&t-D witaoG&M T U_V4_4J*-'=mV-'Z74 &L6&D Foil Lv ' Tsstim cnee* VALve "Thor*^/ fitting Il* Check V-175 CASE III: PERMANENT CONNECTION TO PRESSURED EQUIPMENT In-battery supply line LJi Cl. (0?-"7 M* Spec. EauiP. ^pec <$> C/O i_ o n 4* Ooloc ------M--M-----NrN--------------------------*--To EgutP. bLS&D-^ 'Check CASE. 17; BLANKETED "ATMOSPHERIC" STORAGE '. - jjF,rr1 LoCATft &LOCL A.S tfEO'D^ f SEE TUSTRO MEUT SPEC. A. SD-EilT FPO. PRESSURE COWTROU ARR.AW<5E h\E WT OR APPENDIX C Fori 9to2a&E pzks A&ove 5pi<3, use V-77& Check Valv e At TUii Poiwt SC 001572 Vaizec. Shamo^-Iors S>.S. 4 b. . Set: Peess -- Vac. -- oii MiO lko2. $ Loz. NOTE: Locate injection point on vent nozzle if "RICH" vapor space is desired - on opposite side for sweeping action or purge. LAM002775 C Range: Action: 0-30" H20 0" Differential 0 psig output 30" Differential 15 psig output closed during normal operation. .... Valve: Fisher E Body 300 lb, Flgd. ' : single seat quick opening plug; positive shutoff; ____ air to open. `' 001573 * SOURCE NUM. LIST OF MATERIALS QUAN. DESCRIPTION 1 1 D/P Cell 2 3 1/4" Ball Valve H-M #502-S6-T-S6 3 3 1/2" x 1/4" Swage (TBE) 4 1/2" Sch. 80 Pibe 5 1/4" Sch. 80 PiDe 6 1/4" CU Tubincr 7 3/8" CU Tubing 8 2 Male Connector S.L. #600-1-4 9 1 Imperial Kwik-Connect Body #298 PT - 1/4 - PT 10 1 FiIter-Regulato r-Foxbo ro #B-110--XR W/Gage #P-103-WN Hydrocarbons Divs. Eng. Stds. A-SD-352 *. ~ ^ _ "* _/ . - LAIVI002776 NOTICE APPENDIX C Thi* drawing and tha Information eontalnod thoroin > tho proporty of Monaanto Company and ja mnt that it will not bo rooroducod. copiod or othorwito dioposod of, diroctiy or indirectly, and will not bo uood, in wholo or *o furnish any Information for tho making of apparatus or tho practicing of any process without written msmo Mo mpa ny first obtained and specific at to oach case. Tho acceptance of this drawing will bo construed as an acceptance of the foregoing statement. TYPE 912 type III / TAP TEE V?Dv X , -.s ' v.'* i.;-: 001574 J . t ' ~' 7 *. f "'i' X-: Iff.: /. <L ' 777. r-y V - A suitable system, for low pressure gas blanket control on liquid storage tanks and setting. This regulator also acts as the variable orifice in the pilot system. process tanks has been sought for many years. Some of ane requirements, in suen a c) Fixed Orifice -7- Type 111 lock shield needle valve. system are as follows: a) High speed of response to protect the tank in the event of sudden surges. b) Accurate control at low pressure since d) Pressure Regulator -- Type 912 set at 12 ounces. e) Standard %" pipe tee. .< r many of these systems are designed for Principle of Operation 7 7/ blanket pressures as low'as V>" water column. The main valve, Type 66 or 166, is in c) Economical initial installation. d) Simple, easy to maintain, reliable com ponents. _ stalled dose coupled to the process or stor age tank to eliminate all possible time lag : of gas entry to the tank. On a decrease of pressure in the tank of 0.1" w.c., the Type Through experience, we have founc that Y600 regulator opens, relieving the pressure self-operated Type 66, 66Z, 66ZZ or 165 will from the lower diaphragm casing of the Type not perform satisfactorily when gas blanket 66 or 166 main valve. This causes the main pressures af 2" w.c. or less are required. A valve to open, allowing gas to enter the tank. . j\` ''it1' 1 1 pilot operated system, shown schematically above, was devised to handle these low pres- , ,,*7 Since Y600 the maximum droop or offset of a on 0.4" w.c. to 1.0" w.c. control is Type 10%, ?< sure requirements. \ the control range of the gas blanket is 0.1" ' :*.*:* ' .T ' \ V*.. - The components of this pilot operated sys- - - w.c. At */" w.c. or slightly above, the Y600 - tem are: v- doses, causing a buildup of gas pressure un - a) Main Valve -- Type 66 with pitot tube ' - plugged. Type 166 may also be used. It is -recommended that the valve size be >/_>" der the main valve diaphragm and dosing the Type 66 or 166. The allowable inlet pres It:- sures for this system are as follows: ' to 1" oversize for fast, high capacity ac tion. Valve incorporates 14" w.c. to 28" w.c. spring set at 10 ounces and is in stalled dose coupled to the process or i2r.K. Type 66 Type 166-1 2" Size -- 10 psi 3" Size -- 5 psi 4" Size -- 5 psi . A~ 125 psi Type 166-2 -_ ' 60 psi b) Sensing Element -- %" Type Y600 reg ulator with i/j" orifice and set at '//' THIS DRAWING IS FOR INFORMATION w.c. Type Y600 is installed upside down so that the weight of the parts will aid the regulator in maintaining the l/j" w.c ONLY. CONSULT ENGINEERING SERVICES DEPT. FOR INSTALLATION DESIGN. . i. r~ . x . O i i c/> NO. | NO. OCT. REVISIONS APPROVALS OR. . * ChZC.saO Lk-hiiiid) ENGINEERING DEPT. PROJ. NO. PLANT Y'".# 1 CALS C O M p A NY TEXASCITY, TEXAS 2FISE R GOVERNOR COMPANY LON PRESSURE C-AS BLANKETING CONTROL SYSTEM AREA NAMC DWG. NO. A-SD-317 R/ LAM002777