Document po0o5MpkwNjr186eKJRaV5zw
Shell Oil Company * Shell Chemical Company
Interoffice Memorandum
NORCO MANUFACTURING COMPLEX
JANUARY 27, 1987
FROM:
INDUSTRIAL HYGIENE TECHNICIAN
TO: C. J. GALLIANO
SUBJECT:' ASBESTOS MONITORING
The Occupational Safety and Health Administration (OSHA) has revi-sed
asbestos handling requirements per its Contruction-Industry Standard, 29 CFR 1910.58, which specifically applies to asbestos abatement type activites. In addition to various work practice changes, the Permissible Exposure Limit (PEL) has been lowered to 0.2 f/cc (fibers per cubic centimeter of air).
To further assess Norco Manufacturing Complex's compliance to this
Standard, Industrial Hygiene monitored the recent asbestos abatement job at
ST Unit to determine employee exposure and to evaluate the overall
effectiveness of the employee's work practices. All individuals monitored
were outfitted with high flow pumps equipped with mixed cellulose ester
filters. The filters were sent to the Industrial Hygiene Lab at Westhollow
Research Center for fiber count analysis. ' InSTfTcrM-en Technologies,
:'
Incorporated, the asbestos abatement contractor, provided complete personal
protective equipment for their employees as specified by NMC's procedures.
This included cartridge respirators, disposable coveralls, boot covers,
hoods, and gloves.
The attached tables summarize the results of this monitoring efforts': Of 25 personal samples collected, three exceeded the 0.2 f/cc TWA PE^-these being 0.27, 0.30, and 0.28 f/cc TWA. Basis these exposure leveTs, certain work and hygiene practices would be mandated by the revised OSHA Standard.
For your information, NMC is revising its asbestos handling procedure, a draft of which is being reviewed by Environmental, Health, Safety, and Medical, and Maintenance.
Please forward the attched results to the appropriate Insulation Technologies supervision. Contact me if you have any questions or comments on this matter.
T. C.,Harper AKM/TCH:ggb
NCM7712/8701901 S8
N0R-0Q1500
ASBESTOS MONITORING
Attachments
cc: W/Attachments Head Office P. J. Snyder
Norco T7TT Martin A. K. Menard __ H. L. Fidoe ~~ " A. GVScallan R. D. Laurent W. M. Stumpe, M.D. M. R. Naquin/G, M. LeBlanc Safety Supervisors/Inspectors File 770-02-00 (RC-Safety-West Site)
2
NCM7712/8701901 S8
NOR-0015
NORCO MANUFACTURING COMPLEX AIR MONITORING FOR ASBESTOS fcXWSUHfc LEVELS
CONTRACTOR RESULTS
DATE 11/03/86 i
11/03/86" 11/03/86 11/W/BS11/03/80 n/iw/86
EMPLOYEE NAME
11/04/86--
EMPLOYEE NUMBER
JOB FUNCTION
insulator Insutator Insulator Insulator insulator Insulator insulator Insulator Insulator insulator
T1HTWNI11KHJ7 ------- FIBER/CC---------
MINUTES
RESULTS*
450 0.11
464 OTTB
468 0714
467 0.30
4bS 0.04
450 0725
4UU -----------5702------------
------------ 450------------
OB
481) 07
48U -------- TOT-------------
RESP.(c)
Y
Y Y Y r V Y Y Y
REMARKS
(|{ j
; il)
(1)
0U) _ni_
a) -
REMARKS: (1) Employee was removing insulation from piping and equipment in ST Unit.
*OSHA permissible exposure limit (PEL) is 2 fibers/cc eight-hour time weighted average (TWA).
SIGNATURE
NCM7712/870I902 S8
DATE
N0R-001502
AIR
NORCO MANUFACTURING COMPLEX LEVELS
CONTRACTOR RESULTS
DATE 10725/86 1
10725755" 10725755"
10/28/86 10/28/86
10/31/86 10/31/86 10/31/66 10/31/86 10/31/66
GREMARKS
EMPLOYEE NAME
EMPLOYEE NUMBER
JOB FUNCTION
TIME KUNITuKU), MINUTES
insulator
4/2
insulator insulator Foreman insulator
4/3 4/1 47?
lnsulator
4/4
Insulator Insulator
insulator insulator
4/6 4/6 ------------ 475-----------460
insulator
4/8
3Employee was removing insulation from piping and equipment in ST Unit.
UBktt/OC
RESULTS* 0705
" 0.22 0703 05 OI 0.11 0.13 0707------------
0.06 0705
RESP.(c) L
Y Y Y Y V Y Y Y Y Y
REMARKS
(1) (1) (1) (1) Cl)
(15
(1) (11 (1) (1)
sfflTpermissIble exposure limit (PEL) is 2 fibers/cc eight-hour time weighted average (TWA).
GNATURE M7712/8701902
NOR-001503
NORCO MANUFACTURING COMPLEX AIR MONITORING FOR ASbtSIPS EXPOSURE LTYELS
CONTRACTOR RESULTS
OATE
11/US/tib
ll/Ob/8b
''11705786 11705786
.
. I
EMPLOYEE NAME
EMPLOvff wijmbER
JOB FUNCTION
insulator insulator Insulator insulator insulator
TIME HUN1IURLD, MINUTES 250 250
250 250 250
REMARKS: (I) Employee was removing insulation from piping and equipment in ST Unit.
KIBER/CC--------RESULTS*
0702
0701
02
0702 0702
RESP.(c)
V Y "V Y Y
REMARKS
(1) (1) (1) (1) (1)
*OSHA permissible exposure limit (PEL) is 2 fibers/cc eight-hour time weighted average (TWA).
SIGNATURE
NCM7712/8701902 S8
DATE
NOR-001504