INVESTIGATION OF FUMES GENERATED IN WELDING AND CUTTING OF NAVY MATERIALS

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Authors
  1. Franke, G.L.
  2. Juers, R.H.
  3. Brenna, R.T.
Corporate Authors
Naval Surface Warfare Center Carderock Div, Bethesda MD (US);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
A Navy/Industry Task Group, coordinated by the Naval Sea Systems Command, is addressing the technical and economic impact of anticipated United States Occupational Safety and Health Administration (USOSHA) reductions in permissible worker exposure limits for hexavalent chromium (Cr(VI)). This change is expected to reduce the permissible exposure limit (PEL) from an existing ceiling level of 100 mg/m cubic to between 0.5 mg/m cubic and 5.0 mg/m cubic. As a part of this effort, the Naval Surface Warfare Center, Carderock Division, is investigating methods that can be adopted to reduce worker exposure to Cr(VI) and other hazardous components (Mn, Ni) of airborne emissions from welding and other related operations. The first step of this process has been to establish baseline data for several of the Navy's materials. A standard approach was taken to facilitate comparisons of materials, operations, and fume test methods. The operations investigated were shielded metal arc welding (SMAW), gas metal arc welding (GMAW), flux ored arch welding (FCAW), and oxyacetylene cutting. Plate amaterisl included mild steel; DH-36, A387-Grade 22, HSLA-65, HSLA-80, HSLA-100, HY-80, and HY-100. SMAW electrodes included 7018, 11018, 12018, 8018-B2L, 9018-B3L, 309-15, and 309-16. GMAW electrodes included 70S, 100S, 120S, and Alloy 625. FCAW consumables included 71T, 101T, and 309LT. TRUNCATED
Report Number
DREA-SR-97-002-PAP-4 — CONTAINED IN 98-00986
Date of publication
01 Oct 1997
Number of Pages
24
DSTKIM No
98-00990
CANDIS No
507207
Format(s):
Hardcopy;Document Image stored on Optical Disk

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