Document GKG10No1gd5BrDoNL71ZkxBxx

FILE NAME: BF Goodrich (BFG) DATE: 1949 Jan DOC#: BFG028 DOCUMENT DESCRIPTION: Trade Publication - With Safety '\ , -L-l-f % ; --'-YV~ -l vi - .^ ` 4 `r v i - v ^ ..... ili i!i l ll l:!i l''il'ililil!J lh !'iil '1:^ ;ll!|l|l !lJ!'l ;!ll>l:>l^ lh i| i.. .i;,,,; iMedical Division, The B. F. Goodrich Co., Akron, Ohio WITH SAFETY RESPIRATORS AND GAS MASKS by the U. S. Bureau of Mines. A commercially available type of this device is shown in Fig. 2. 3. Compressed air (air line) Respirators. See Table 3. This is probably the most com monly used Supplied Air Respira tor. An illustration of it is shown in Fig. 3. It consists of a face piece covering which may be of either the full or half mask type, a high pressure air supply system, a short hose connecting the face piece to the air supply, and a de tachable coupling with a suitable reducing valve. These devices are intended for non-emergency use and should not be used under any circumstances in atmospheres which may be immediately dangerous to life. They will give protection against all of the various atmos pheric contaminants. Their proper operation depends upon providing an adequate supply of high pres sure air to the wearer in amounts somewhat in excess of his breath ing requirements. This means that at all times excessive air should be flowing through the exhalation valve or about the periphery of the face piece. These devices are termed Type C Supplied Air Respirators by the U. S. Bureau of Mines. They are approved for various lengths of hose up to a maximum of 250 feet. It is obvious, of course, that the air supply to this device must receive special attention. It is the responsibility of the user rather than the manufacturer of'the de vice to provide a proper air supply. The Bureau of Mines approval re quires that no pressure in excess of 25 lbs. per sq. inch gauge be used on these devices. Most of the manu facturers of this type of respirator provide a small activated carbon filter in the air supply line near the detachable coupling. The pur pose of this is to remove small quantities of (T o page so) Name of Respirator 1. Davis air-line mask 2. Bullard Simplex hose Table 2 Hose Mask without Blower ......................... mask ................. Approval Number 1913 1916 Table 3 Airline Respirators Name of Respirator 1. M.S.A. air-line respirator ................. 2. W illson air-line respirator ( S A , S B , S C ) 3. C asco direct air mask (# 6 0 2 ) ........ Approval Number 1909 I909A 1912 1917 Date of Approval March 10, 1939 ' October 14, 1939 Date of Approval July IS, 1938 M a y I9,, 1947 Oct. 7. 1938 Aua. 17, 1940 'I|||!!|!!i!|:'l!i|lil|ll!!^ . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . ... . , 1 ,1 . . . . . . . . !. . . . . . . .. . . . . 1;!l|li"!l ||L!/I vV1i . - m T - m - T n - m T n to replace the canister at the first signs of the passage of the contami nated gas or vapor into the face piece as evidenced by eye or respi ratory irritation or odor. A supply of fresh canisters should be at all times available for replacement purposes. Where protection against only a specific gas or gases is de sired this is the mask to be chosen. It is shown in Fig. 5. 2. Those intended for protection against all gases, including carbon monoxide, and limited protection against smoke. See Table 6. These gas masks are now termed the Universal Type (see Fig. 6). The canister consists of various sorbents arranged in layers to pro vide the maximum amount of pro tection to the wearer against all toxic gases and vapors. Inasmuch as carbon monoxide possesses no warn ing properties, a small timing de- Table 5 G as Masks (or Specific Gases Name of Mask Type A : Acid Gas Masks Approval Number a. Hydrocyanic A c id (Canister Color*. W hite with Green Stripe' I. M.S.A. hydrocyanic acid gas mask. 1413 (regular-size canister) 1414 (super-size canister) 2. Davis hydrocyanic acid gas mask . . 1424 3. Willson hydrocyanic acid gas mask 1 1428 4. Bullard hydrocyanic acid gas mask. 1431 Date of Approval Dec. 9, 1933 Dec. 9, 1933 Dec. II, 1939 Aug. 30. 1940 Feb. 10, 1941 1947 to E. D. Bullard Co. 1. Acm e chlorine gas mask. .. 2. M.S.A. chlorine gas mask . 3. Willson chlorine gas mask1. 4. Davis chlorine gas mask .. 5. Bullard chlorine gas mask . 'ith Yellow Stripe) 1421 1422 1426 1427 1430 April 21, 1939 M a y 26, 1939 March 8, 1940 June 26, 1940 Feb. 10, 1941 1947 to E. D. Bullard Co. Type B: O rganic Vapor Mask (Canister Color:: Black) 1. M.S.A. organic vapor mask ... 1415 2. Davis organic vapor mask ...... 1417 3. Acm e organic vapor mask ...... 1418 4. Bullard organic vapor mask...... 1419 5. Willson organic vapor mask1.., 1423 6. Willson organic vapor mask1... 1437 (large-size canister) 7. M .S.A. organic vapor mask 1441 (super-size canister) ' July 28, 1936 M ay 3, 1938 M a y 13, 1938 July 15, 1938 Oct. 6, 1939 Aug. 5, 1944 Aug. 2, 1946 1 A n extension of approval 1423 was Issued M a y 20, 1947 to E. D. Bullard Co. 2 An extension of approval 1437 was issued M ay 20, 1947 to E. 6. Bullard Co. Type A8: Acid Gas and Organic Yapor Masks (Canister Color: a. A cid G as and O rganic Yapor 1. M.S.A. acid gas & organic vapor. . 1409 2. Davis acid gas & organic vapor. .. 1411 b. H ydrogen Sulfide and Petroleum Vapor 1. M.S.A. hydrogen sulfide & petro leum vapor ............................. 1410 2. M.S.A. hydrogen sulfide & petro leum vapor ............................. 1412 3. M.S.A. hydrogen sulfide & petro leum vapor ............................. 1416 I4 I6 A Type C : Ammonia G as Masks (Canister Color: Green) 1. M.S.A. ammonia gas mask1 . 1401 2. M.S.A. ammonia gas m a s k ......... 1404 3. M .S.A. ammonia gas mask4' 5. . 1406 4. Davis ammonia gas mask3' ' ........ 1408 5. Acm e ammonia gas m a s k ........... 1420 6. Willson ammonia gas mask4........ 1425 7. Bullard ammonia gas mask . . 1429 ) 7 8. Willson ammonia gas mask (large canister ............................. <f. M . S . A . a m m o n ia g a s m ask (su p e r 1439 size G M D c a n iste r) ..................... 1442 Yellow Jan. 23. 1930 Jan. 19, 1931 July 16, 1930 Sept. K 1931 June 16, 1937 July 1, 1937 April 10, 1920 March 10. 1926 Feb. 14. 1928 Dec. 19. 1928 March 25, 1939 Dec. 20, 1939 Feb. 10, 1941 Spt. 22. 1944 Aug. 29, 1946 1 An extension of approval 1401 was issued June 23, 1927 to Am rican-La France & Foamite Industries, Inc. * O riginally Issued to Bullard-Davis. Inc., later transferred to Davis Emergency Equipment Co., Inc. 3 An extension of approval 1408 was issued Nov. 18, 1930 to Am erican.La France A Foamite Industries, Inc. * An extensionof approval 1406 was issued M a y 17, 1938 to B. F. M cD o nald Co. * An extensionof approval 1406 was issued Feb. 20, 1946 to Am erican-La France A Foamite, Inc. 8 An extensionof approval I42S was issued M ay 20, 1947 to E. D. Bullard Co. r A n extensionof approval 1438 was issued M ay 20, 1947 to E. D. Bullard Co. vice is incorporated in masks of this type to enable the wearer to determine the time for canister re placement. These canisters are ordinarily designed for two hours of normal usage. This time, of course, may be increased or de creased depending upon the condi tions under which it is worn and the volume of air which passes through it. They are approved for a maximum concentration of 2% by volume of all of the contami nants with the exception of am monia for which the maximum limit is 3%. These canisters will also afford respiratory protection against smoke from ordinary fires and limited protection against dusts, fumes, and mists. They do not, however, afford adequate pro- Fig. 5-- Industrial gas mask ( * 1423) dasignad for protection against a specific type of vapor. Figure 6-- A universal gas mask ( * 1405). Note timing device Immediately above the canister. FO R J A N U A R Y , I 949 31