1、AmericAn nAtionAl StAndArdANSI/ASSE A10.24 2014Roofing Safety Requirements for Low-Sloped RoofsAmerican National Standard for Construction and Demolition OperationsAmericAn Society of SAfety engineerS4Casselogo-1200dpi_vector-1c-outline.pdf 1 1/20/2012 1:31:55 PMANSI/ASSE A10.24 2014ANSI/ASSE A10.24
2、 2014The information and materials contained in this publication have been developed from sources believed to be reliable. However, the American Society of Safety Engineers (ASSE) as secretariat of the ANSI accredited A10 Committee or individual committee members accept no legal responsibility for t
3、he correctness or completeness of this material or its application to specific factual situations. By publication of this standard, ASSE or the A10 Committee does not ensure that adherence to these recommendations will protect the safety or health of any persons or preserve property. ANSI ANSI/ASSE
4、A10.24 2014 American National Standard Construction and Demolition Operations Roofing Safety Requirements for Low-Sloped Roofs Secretariat American Society of Safety Engineers 1800 East Oakton Street Des Plaines, Illinois 60018-2187 Approved December 3, 2014 American National Standards Institute, In
5、c. Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agr
6、eement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of
7、American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he/she has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American Nationa
8、l Standards Institute does not develop standards and will in no circumstance give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Inst
9、itute. Requests for interpretation should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require tha
10、t action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published January 2015 by American Society of Safety Engineers 18
11、00 East Oakton Street Des Plaines, Illinois 60018-2187 (847) 699-2929 www.asse.org Copyright 2015 by American Society of Safety Engineers All Rights Reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permissi
12、on of the publisher. Printed in the United States of America American National Standard Foreword (This Foreword is not a part of American National Standard A10.24-2014.) This standard is one of a series of safety standards that have been formulated by the Accredited Standards Committee on Safety in
13、Construction and Demolition Operations, A10. It is expected that the standards in the A10 series will find a major application in industry, serving as a guide to contractors, labor, and equipment manufacturers. For the convenience of users, a list of existing and proposed standards in the A10 series
14、 for Safety Requirements in Construction and Demolition Operations follows. A10.1 Pre-Project available through the National Roofing Contractors Association; further information is available from: http:/ Journal of American Medical Association, B.A. Pruitt and R.F. Edlich, “Treatment of Bitumen Burn
15、s,” v. 247, no. 11, p. 1565, March 19, 1982 (Letter to the editor) NFPA 10, Standard for Portable Fire Extinguishers National Toxicology Program. “Coal Tar and Coal Tar Pitches”. Report on Carcinogens, 13thEdition, 2014 http:/ntp.niehs.nih.gov/ntp/roc/content/profiles/coaltars.pdf DHHS (NIOSH) Publi
16、cation 78-107, Criteria for a Recommended Standard for Occu-pational Exposure to Coal Tar Products. Available from the following: http:/www.cdc.gov/niosh/docs/1970/78-107.html DHHS (NIOSH) Publication 2001-110, Health Effects of Occupational Exposure to Asphalt (Paving, Roofing, and Manu-facturing),
17、 available from the following: http:/www.cdc.gov/niosh/docs/2001-110/pdfs/2001-110.pdf AMERICAN NATIONAL STANDARD A10.24 2014 13 DHHS (NIOSH) Publication 2003-107, Reducing Roofers Exposure to Asphalt Fumes, available from the following: http:/www.cdc.gov/niosh/docs/2003-107/pdfs/2003-107.pdf DHHS (
18、NIOSH) Publication 2003-112, Asphalt Fume Exposures During the Application of Hot Asphalt to Roofs Current Practices for Reducing Exposures, available from the following: http:/www.cdc.gov/niosh/docs/2003-112/pdfs/2003-112.pdf OSHA Standard, 29 CFR 1910.1200, Hazard Communication OSHA Standard, 29 C
19、FR 1910.134, Respiratory Protection 3. DEFINITIONS 3.1 Approve. Where the word “approve“ is used, it refers to approval by the authority having jurisdiction over the specific requirements. 3.2 Bitumen. Generic term for asphalt or coal tar pitch. 3.3 Body Harness. See Full Body Harness. 3.4 Built-Up
20、Roofing. For the purpose of this standard, a protective cover applied over roof decks generally consisting of one or more layers of felt and bitumen; may be applied with hot bitumen or cold bituminous materials. 3.5 Catch Platform. A temporary structure erected around, attached to and abutting the b
21、uilding being roofed for the purpose of safeguarding workers and the public, and which catches and retains falling objects. 3.6 Chute. Trough or tube used to guide and transport objects, materials or debris from a higher level to a lower level. 3.7 Chute Support System. Chute supports extending out
22、from the building edge capable of supporting the chute with counterweights attached. It shall be made of material capable of supporting the chute and shall be set up to prevent a tripping hazard. 3.8 Competent Person. One who is capable of identifying existing and predictable hazards in the surround
23、ings or working conditions that are unsanitary, hazardous or dangerous to workers and who has the authorization to take prompt corrective measures to eliminate such hazards. 3.9 Confined Space. Enclosures having limited means of access and egress, such as tankers and kettles, and/or where hazardous
24、gas, vapors, dust, fumes or oxygen deficient atmospheres occur or flammable or explosive vapors may accumulate. 3.10 Conveyor. Any portable lifting apparatus used in raising and lowering roofing materials and equipment to and from the roof by means of a continuous belt, buckets or platforms riding o
25、n a frame. 3.11 Employer. An entity that employs people to engage in roofing practices. 3.12 Fall Arrest System. See Personal Fall Arrest System. 3.13 Fall Hazard. Any location where a person is exposed to a potential fall of 6 feet (182.9cm). 3.14 Fall Restraint System. See Personal Fall Restraint
26、System. 3.15 Flammable Gas. A gas that, at ambient temperature and pressure, forms a flammable mixture with air at a concentration of 13 percent by volume or less; or a gas that, at ambient temperature and pressure, forms a range of flammable AMERICAN NATIONAL STANDARD A10.24 2014 14 mixtures with a
27、ir at least 12 percent by volume, regardless of the lower limit. 3.16 Flammable Liquid. Any liquid having a flashpoint below 199.4F (93C), except any mixture having components with flashpoints of 199.4F (93C) or higher, the total of which make up 99 percent or more of the total volume of the mixture
28、. Any liquid having a flash point below 199.4F (93C) and having a vapor pressure not exceeding 40 pounds per square inch (absolute) at 100F (37.8C). 3.17 Flash Point. Lowest temperature at which a liquid gives off enough vapor to form an ignitable mixture with air and produce a flame when a source o
29、f ignition is present. 3.18 Full Body Harness. Straps that are secured about a worker in a manner that distributes the arresting forces over at least the thighs, shoulders and pelvis with provisions for attaching a lanyard, lifeline or deceleration device. 3.19 Grab Hooks. Hooks without a locking me
30、chanism or gate to prevent the sling from coming off the hook; this is sometimes referred to as killer hooks. 3.20 Gravel Scratcher. Mechanized machine used to remove embedded aggregate surface from an existing roof. 3.21 Guard. Barriers that prevent access to pinch points, points of operation and d
31、anger areas. Guards should be designed, constructed and used so that they will: Provide positive protection. Prevent all access to the danger zone during operations. Not cause the operator any discomfort or inconvenience. Not interfere unnecessarily with production. Operate automatically or with min
32、imum effort. Be suitable for the job and the machine. Preferably constitute a design with integral built-in features. Provide for machine oiling, inspection, adjustment and repair. Withstand long use with min-imum maintenance. Be durable, flame- and corrosion-resistant. Not constitute a hazard by th
33、emselves (without splinters, sharp corners, rough edges or other sources of accidents). Protect against foreseeable use, foreseeable misuse and operational contingencies; not merely against normally ex-pected hazards as determined from a job safety analysis. 3.22 Guardrail System. Fall protection sy
34、stem erected along the open sides and ends of platforms or scaffolds, at unprotected or leading edges, or around holes, shafts or other roof or deck openings. The rail system consists of a top rail, mid rail, toeboard and their supports. See details in Section 7.5.1. 3.23 Hand Hoist. Manually operat
35、ed hoist consisting of a beam support, well wheel and rope. 3.24 Hazardous Material. OSHA has recently updated the physical and health hazard definitions, they are comprehensive, up-to-date and reflect harmonization with international hazard classification terms. Using the following definitions will
36、 be consistent with the OSHA Hazard Communication standard. A material, which has one or more of the following characteristics: AMERICAN NATIONAL STANDARD A10.24 2014 15 1) Is a physical hazard if it can be classified as having one of the following hazards: explosive; flam-mable (gases, aerosols, li
37、quids or solids); oxidizer (gas, liquid or solid); self-reactive; pyrophoric (liquid or solid); self-heating; organic peroxide; corrosive to metal; gas under pressure; or contact with water emits a flammable gas. The criteria for determining whether a chemical is classified as a physical hazard are
38、detailed in Appendix B to OSHA 1910.1200, Physical Hazard Criteria, see: https:/www.osha.gov/dsg/hazcom/hazcom-appendix-b.html 2) Is a health hazard, meaning it can be classified as posing one of the following hazardous effects: acute toxicity (any route of exposure); skin corrosion of irritation; s
39、erious eye damage or eye irritation; respiratory or skin sensitization; germ cell mutagen-icity; carcinogenicity; reproductive toxicity; specific target-organ toxicity (single or repeated expo-sure); or an aspiration hazard. The criteria for determining whether a chemical is classified as a health h
40、azard are detailed in Appendix A to OSHA 1910.1200, Health Hazard Criteria, for more information, see the following: https:/www.osha.gov/dsg/hazcom/hazcom-appendix-a.html 3) Is a burn hazard, meaning it can cause first-degree burns to skin in a short exposure. 4) Is a contaminant-generation hazard,
41、meaning that in the course of normal operations may produce dusts, gases, fumes, vapors, mists or smokes, which have one or more of the preceding character-istics. 3.25 Heating Equipment. Kettles, tankers, torches and similar devices used to heat or melt bitumen. 3.26 Hoist. Any portable lifting app
42、a-ratus used in raising and lowering roofing materials and equipment to and from the roof by means of a cable or rope with a one ton or less capacity as distinguished from cranes or derricks. 3.27 Hoist Accessories. Any hoisting equipment that is attached to the lifting hooks such as hoisting forks,
43、 slings, gravel buckets, trash trays, spreader bar, gravel scoops and similar equipment. 3.28 Hole. A void or gap 2 inches (5.1cm) or more in its least dimension in a roof, floor or other walking-working surface through which people, equipment or material may fall; also, an unprotected skylight. 3.2
44、9 Hot Air Gun. A thermostatically controlled device that blows hot air between the laps of certain roofing membranes for the purpose of melting the material to fuse or weld it in the form of a seam. These devices may be hand-held or self-propelled. 3.30 Hot Bitumen. Bitumen that has been heated in a
45、 kettle or tanker and dispensed in liquid form for use on the roof. 3.31 Hot Equipment. Equipment used during the application of hot built-up roofs. 3.32 Hot Pipe. System of tubing or pipe through which hot bitumen flows. 3.33 Kettle. A portable vessel with a heating apparatus used for melting bitum
46、inous products into a liquid state for use during the built-up roofing process. 3.34 Killer Hooks. See Grab Hooks. 3.35 LP Gas. Liquefied petroleum gas. AMERICAN NATIONAL STANDARD A10.24 2014 16 3.36 Low-Sloped Roof. Roof having a slope less than or equal to 4 inches (10.2cm) rise per linear foot (3
47、0.5cm) (18 degrees). 3.37 Lugger. Wheeled container used to receive hot bitumen from its supply source, transport the hot bitumen on the roof, and discharge the hot bitumen into other machines or equipment. 3.38 Material Safety Data Sheet (MSDS). See Safety Data Sheet. 3.39 Mechanical Equipment. Whe
48、eled equipment that is human propelled or mechanized, except wheelbarrows and mop carts. 3.40 Mechanized Equipment. Machin-ery which is gas- or electric-powered. 3.41 Melter. A portable vessel with a heating apparatus and equipped with an agitator for melting rubberized asphalt into a liquid state f
49、or use in roofing and waterproofing processes. 3.42 Mop Cart. Portable, open-topped tub with two wheels used to receive hot bitumen, transport the hot bitumen on the roof and accept a mop. 3.43 Personal Fall Arrest System (PFAS). Assembly of components and subsystems used to arrest a person in a fall from a working height. It consists of a full body harness, anchorage, lifeline, lanyard and connectors in appropriate combina-tions. 3.44 Personal Fall Restraint System. A device or devices, inc
