Document 6wj5eDBBe225B8nZVxYrzvqX1

Interoffice Communication To DISTRIBUTION From J. V. Uptain Date October 11, 1979 Subject VCM DOSIMETRY DATA SYSTEM conoco I recommend that we begin using the card system during VCM dosimetry. We have been using it during lead dosimetry for several months and have found it to be superior to the current VCM system in several respects: 1. In the card system,when the employee picks up his dosimeter at the start of the work period, he is also given the "B" portion of the two-part sample card (see attached). He is required to complete the card, sign it, and return it, with the dosimeter, at the end of his work period. This accomplishes many things: a. It gives the employee a reason to think about what he is doing by having him write it down. For example, he has to think about the worst hazards he deals with while it's ''fresh on his mind." b. It gives better information because it is recorded during the day the sample is taken. At present, we expect people to recall what happened several days (weeks?) after an overexposure. This is not always possible. c. It gives better information because the card must be signed: most people hold their signature in respect ("If I sign that, I'm gonna make sure..."). d. It saves supervisory time now spent tracking down information on overexposures. 2. When an overexposure occurs, the employee is notified directly by use of the ''Notice of Monitoring Result" card (see attached). It has several nice features: a. A red tracer copy keeps the scheduler from having to run Zerox copies for the same purpose as is presently the case with VCM. b. The information provided to the employee is more to the point, more complete (compare it with the "A" card), and does not require him to remember events he has forgotten (as noted above). c. It is "unique," being easily seen among the common clutter of paper and easy to handle because of it's size. VAB.0001053477 Distribution October 10, 1979 VCM Dosimetry Data System Page 2 4 3. There is always a risk of losing the single schedule sheet presently used with VCM. Loss of a card (one sample) is less serious. There are probably other benefits I've overlooked, but those noted are enough for me to say MletTs try it!" ' 'mmediately. J. V. Uptain c: CLM, CRM, RBM, AHS, SJV VAB.0001053478 r > S i CONOCO CHEMICALS - ABERDEEN PVC PLANT DOSIMETRY CARD (A) SAMPLE NS Hrard: VCM ( ) LawM ) Noiw{ )( ) Data Mams;S. S. #Shift apartmentJob Class Instrument No...,. ,. Noiaa Cell No. Time . ... Airflow Start AM( )PM( ) ____ i Stoo Analyst::__________________________________ Analysis Date: Hazard | VCM PEL: 1 PPM Noise Over ( ) Under ( ) Lead (Micrograms) I TOT: PEL: 115 dBA Per M3 TWA Exposure PPM % of PEL Per M3 CONOCO CHEMICALS - ABERDEEN PVC PLANT DOSIMETRY DATA CARD (B) SAMPLE NS Hazard: VCM ( ) Lead ( ) Noise ( )------------------------------ ( ) Date ------------------------ - Time Clock (Lead Sampling Only) : IN:AM( ) PM( ) OUT::AM( ) PM{ ) List areas you spent most time in and estimate amount of time (nearest hour is sufficient) spent. Area Time Area Time List most likely causes of possible overexposure to the hazard. 1______________________________________________________________________________________________________________________ ;_________________________________________________ 2 ________________ ,_______________________________ Check respiratory protection you used: ( ) Nona ( ) Dust Mask ( ) Air-line Respirator Signature Please complete and return to guard ( ) Scott Air-pak t VAB.0001053479