LAYKOLD Weathercoat
SAFETY Atomic Code for N e w York Safety code covers oil phases of industrial exposure to atomic r a d i a t i o n , follows AEC regulations
- a "permanent poncho1 for exposed insulation If you have " h o t " or " c o l d " tanks, towers, vessels o r p i p i n g exposed t o the weather, you k n o w t h e p r o b l e m . Insulation m u s t b e k e p t dry t o be effective. "Weathercoat is the answer.
High-efficiency insulation insurance L a y k o l d W e a t h e r c o a t is t h e b e s t "raincoat" your units could have because it seals o u t n o t o n l y w a t e r b u t also w a t e r v a p o r . I n a d d i t i o n , W e a t h e r c o a t stays " a l i v e " t h r o u g h season after season. Write for full
details.
A M E R I C A N
; t u m u l s &
A s p h
2 0 0 BUSH STREET SAN FRANCISCO 20, CALIFORNIA
5098
C&EN
N O V . 2 1,
1955
T HIS is THE FIRST comprehensive state safety code in this field, a n d N e w Yoxk is the first in the nation to have a code which is in complete conformity with recent AEC safety regulations/* Tlie speaker is Rear Adm. William S. Maxwell (U.S.N, retired), chairman of t h e New York State Board of Standards a n d Appeals. "The code" is a new set of regulations designed to protect trie 150,000 N e w Yorkers employed in i n dustries w h e r e exposure to industrial radiation is possible. As adopted, tlie
Permissible Limits of Radiation, -4s Defined by New York Atomic Industrial Safety Code (In m.r.e.m., mflliroentgens e q u i v a l e n t m a m m a l )
code covers all phases of the field, including industrial use of isotopes. T h e State Health D e p a r t m e n t recently a d o p t e d regulation in its Sanitary Code covering protection of personnel in hospitals, d e n t a l offices, and similar establishments. T h e t w o codes will complement each other to cover most peacetime uses of radiation. T h e code i the culmination of a two-year s t u d y by a 2 6 - m a n Labor D e partment advisory commiitee. The code w e n t through 12 drafts before being considered b y t h e board, and was the subject of seven public hearings before t h a t body p r e c e d i n g final a d o p tion. It becomes effective Dec. 15. Principal requirements are:
• All installations a n d mobile services must b e registered. • Kach installation must have a radiation safety supervisor a n d a radiation If safety officer. Workers exposed to radiation must be trained by a supervisor and b e completely informed of hazards in installations. Minors u n d e r 18 will n o t be p e r m i t t e d to work in areas of possible hazard. Hands and neck only, 1500 „ {|3Si si* drea; 300 around eyes. *'• ****** • Dose limits can b e determined on a weekly or on a quarter-year basis. W h e n a person is exposed to greater Hands and forearms exposeaT^ than specified limits, t h e employer shall only, 1 500 in the skin a r e a . " ^ report t h e fact to the commissioner of labor. T h e rule takes effect w h e n any employee m a y b e exposed to one tenth, Inhaled or ingested radiation of t h e permissible dose. and direct exposure to rays • T h e radiation officer shall be required together must not exceed to make a survey evaluating t h e h a z a r d appropriate limits per week. when conditions in t h e installations change, or more often. Proper detection and measuring instruments m u s t Entire body exposure, 3O0 fog be readily available. blood-forming organs, gortrd • Any employee receiving 2 5 % or m o r e ads, and lens of the two eyes^f of the radiation dose limit must b e sup600 in the skin. \ plied a n d must use appropriate personnel monitoring equipment—dosimeters, film badges, or similar devices. Entire body exposed and low • Precaution signs or labelling are repenetrating power, 3 00 f in quired. T h e y must contain t h e standi^ns of^he eye; 1500 in any ard radiation symbol a n d appropriate other part of the body. ** cautionary wording. • Weekly permissible limits are deN-»l fined. i 5V < -Feet and ankles, 1 5 0 u ^ (Continued on page 5111) jj-'v**^
•r-
CHEMICALS EXCHANGE lODINATED ORGAN IG CHEMICALS
ETHYLENE IMINE (boiling range 55° ,o 57° C) a n d Trie+hylene IMelamine now available in semi-commercial
C H EM I RAD CORPORATION O . Box 1 5 2 , Port Washington, L . I.f M . Y.
2,4-DIAMNODIPHENYLAMINE Available
High purity for research
compounds purposes
Diiodotyrosine Diiodosalicylic Acid and other lodinated Synthetics Write for information o n properties a n d prices. Inquiries o n special syntheses invited.
A S I C H E M J C A L S I N C O R P O R A T E D 8 4 5 Honna Building
•
C l e v e l a n d '15, O h i o
CcmfJOMuk
quantifies
• Sodium Tangstate, crystalline, technical grade • Sodium Tungstate, anhydrous, technical g r a d e , 9 8 / 9 9 %
Commerctai/y
ROBERTS CHEMICALS, Inc.
•
Nitro, W . Va.
Potassium Tungstate, anhydrous, C.P., or reagent g r a d e
• Tungstk: O x i d e , metal g r a d e
YOUR ANNOUNCEMENT of Chemicals for Sale a n d / o r Wanted c a n carry YOUR MESSAGE to t h e readers of the leading publication in the cneinicaa. process invxiiSirx^s. Rates on request. CHEMICAL & ENGINEERING N E W S Advertising Office 430 Park Avenue New York 22, N. Y.
MERCURIC
LACTATE
one o f the many special chemicals we manufacture Write for c o m p l e t e listings
CITY C H E M I C A L C O R P . 1 3 2 W . 22nd St.
N « w York 1 1 , N . Y .
Hi^^l!ii'l^l«f^BBTliPlM , ! WfafPi
Safety (Continued from page 5098)
For High Temperature— High Pressure Sealing . . . DURA SFAL Type P.T. is the engineered rotary mechanical seal for meeting severe sealing conditions. Pressures from 50 to 1 0 0 0 psi. . - . temperatures from 8 0 ° F . to 450 °F. Write today for illustrated booklet describing applications. Ask for Dura Seal Catalog No. 455-CN.
• Maximum allowable concentrations for carbon disulfide should be lowered from 20 to 10 p.p.rn., according to Irvin R. Tabershaw and Morris Kleinfeld, New York Department of Labor. In JAMA, Oct. 15, they tell of two patients who suffered chronic carbon disulfide poisoning from working in rayon plants. They were exposed to slightly over 20 p.p.rn., yet ttie poisonings were not discovered for 10 years.
DURAMETALLIC CORPORATION K A L A M A Z O O , MICHIGAN
H
— — Completely c»!f-£cr>ts!ned •water-proof ever-reody cose with »hou»der strop c o m p l e t e S ^ f f O O
Ttnixiuu^ 585
MAIN
ea^ureiriml
ST. C H A T H A M ,
N E W JERSEY
• Threshold limit values for 1955 have been established for hazardous chemicals by the American Conference of Governmental Industrial Kygienists, A single reprint of the list, as It appeared in the American Medical Association Archives of Industrial Health, may be obtained free of charge from Allan J. Coleman, Connecticut State Depart-
:•.. perfecf
"*
priced at far less than reproduction cost/ Ideal for chemicals, gates, pneumatic use, hydraulics and liquids. H I G H PRESSURE TANKS, 500 PSI iM' pipe threads each end) -1W 12'x24' stainless steel, has welded standup base for f i n CI » " easyfillinsand draininS. Wt-20 lb *«?•? G*1 Same ai above, less base. Wt. 19 lb. $16.50 D-2 6'x24' maanetic type, Stainless steel, Wt 6 lb*... $8.25 I-A 5>i'x8* Stainless steel, }£* pipe opening c $3.95 * * end. W t . l H I b s . EXTRA H I G H PRESSURE, 3000 PSI U.1 2 ' x 9 J ^ ' Heavy Carbon Steel, W port. Equipped wfch " * stainless steel shut-off valve and O-3000 PSI pressure gauge. Wt. 8 lbs. H'2 3 ^ ' x 1 9 ' Heavy carbon steel, H ' &P* thread port. r M "7C
S
$5.50
E
*% Same as H-2 but 4*x24" heavy c jrbon steel, H ' "*.
pfpe thread opening. Wt-IOibs
( C 1C ,..#3.13
Send Purchase Order. Terras: 2 % 10 days, 30 day* net A . C. T A N K C O . , D e p t . 1 1 4 , P . O . B o x 3 8 9 BURLINGTON, WIS. PlJone 1289
iMilfiTrlkiER FOR MEASURING TANK CONTENTS ANY DISTANCE A W A Y
INSTRUMENT CO. 4 8 3 GETTY AVENUE • PATERSON. N . J.
NOV.
2 1,
1955
C&EN
SENDFO*
suum* 94$
.
5111
TECHNICAL SERVICES
> Ship?.t#s your m e r c u r y . W « f r e t u r n ^it. i — m « d i * r « l y m hmvrf, cUar g4a»» b o t t l e s / induction distilled in glass, tinder Vacuum guaranteed t o m e e t A . C . S . specs. M i n i m u m 10 p o u n d s . — slight .loss. I n processing. . I d e n t i f y shipment. ' • " • ' / ••'. - •
