Document zoQ06KL0M40y8aJ1oZYxgDkRg

Qfta /, ** /-es Interoffice Communication To Reactor Foreman (4) Ffom R. w. Seymour Date 3/8/74 Subject Operating Procedures Please follov? the procedures Listed below starting immediately in V-10, V-1L and V-12 Buildings. 1. REACTOR DLBfP PROCEDURE Reactors arc to be dumped with the mrnhnads closed. Break vacuum using the manual vent (disconnect bolts on steam valve). When reactor is empty, pull air thru dump valve for 15 min. with steam jet. Then open the reactor with vent tube inserted immediately. Run vent tube exhaust on open reactor for several minutes before rinsing or water blasting to prevent forcing VC vapors out the manhead. This procedure is to be done to reduce operator VCM exposure, BUT you trust enforce the use of vent tubes in the reactor manhesds immediately after opening to be effective. If you get a reactor that won't dump, pull a vacuum on that reactor for thirty (30) minutes with steam jet. Then open the manhead and immediately insert the vent tube. Exhaust for several minutes before working at reactor manhead, 2. USE 0FBE!'Z0-TRIAZ OLE Begin use of Bcnzo-triazole in PVA solutions today to aid reactor cleanliness. Enter reactors only as necessary and water blast as effectively as possible to aid in reducing entries. The first three shifts of usage of Benzo-triazole will be followed by Process Engineers. Safety in use of this material requires that you not consume this material, so have the men was their hands immediately after use to prevent getting into their mouths or their food. The reactor dump procedure is temporary and will be revised, but this procedure is to be followed now and vent tubes put in reactors immediately upon opening or disciplinary measures must be taken, 3M C=3 as <53 "ST <55 <55 o> <3 I--* <59 R. W. Seymour RWS/lpb cc DFG, BJH, BFII, JWP, HJF u l 1R 02v b 69 2 LEAD OPERATOR SHIFT REPORT LEAD OPERATOR BUILDING ' _______________________ 1. Ventilation Fans All Operating 2. List Any Fans Not Operating Properly. 3. Vent Tube Exhaust Blowers Operating Properly. 4. List Any Maintenance Needed On Vent Tube System. 5. Maximum Vacuum Pulled. By No.Recovery System 6 Maximum Vacuum Pulled By No.Recovery Systexn. DATESHIFT 1ST CJZECIC ON SHIFT 2ND CHECK ON SHIFT .1. 2 3. 4. .1. 2 3. 4. In. Hg. In. Hg.