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GENERALINFORMATIONINFORMATIONGENERAL� Hose information is subject to change. For full details, visit our website or contact Customer Service. 3. Hose to be pressure tested must be restrained by placing CARE, MAINTENANCE AND STORAGE steel rods or straps close to each end and at approximate Hose has a limited life and the user must be alert to signs of 10 foot (3 m) intervals along its length to keep the hose from impending failure, particularly when the conditions of service "whipping" if failure occurs; the steel rods or straps are to be include high working pressures and/or the conveyance or contain- anchored firmly to the test structure but in such a manner that ment of hazardous materials. The periodic inspection and testing they do not contact the hose which must be free to move. procedures described here provide a schedule of specific measures 4. The outlet end of hose is to be bulwarked so that a blown- which constitute a minimum level of user action to detect signs indi- out fitting will be stopped. cating hose deterioration or loss of performance before conditions leading to malfunction or failure are reached. 5. Provisions must be made to protect testing personnel from the forces of the pressure media if a failure occurs. 6. Testing personnel must never stand in front of or in back of SAFETY WARNING: Failure to properly follow the the ends of a hose being pressure tested. manufacturer's recommended procedures for the care, maintenance and storage of a particular hose might 7. If liquids such as gasoline, oil, solvent, or other hazardous result in its failure to perform in the manner intended fluids are used as the test fluid, precautions must be taken to and might result in possible damage to property and protect against fire or other damage should a hose assembly serious bodily injury. fail and the test liquid be sprayed over the surrounding area. General instructions are also described for the proper storage of STORAGE hose to minimize deterioration from exposure to elements or envi- Rubber hose products in storage can be affected adversely by ronments which are known to be deleterious to rubber products. temperature, humidity, ozone, sunlight, oils, solvents, corrosive Proper storage conditions can enhance and extend substantially liquids and fumes, insects, rodents and radioactive materials. the ultimate life of hose products. The appropriate method for storing hose depends to a great extent on its size (diameter and length), the quantity to be stored, and the GENERAL CARE AND MAINTENANCE OF HOSE way in which it is packaged. Hose should not be piled or stacked to Hose should not be subjected to any form of abuse in service. It such an extent that the weight of the stack creates distortions on should be handled with reasonable care. Hose should not be the lengths stored at the bottom. dragged over sharp or abrasive surfaces unless specifically Since hose products vary considerably in size, weight, and length, it designed for such service. Care should be taken to protect hose is not practical to establish definite recommendations on this point. from severe end loads for which the hose or hose assembly were Hose having a very light wall will not support as much load as not designed. Hose should be used at or below its rated working could a hose having a heavier wall or hose having a wire reinforce- pressure; any changes in pressure should be made gradually so as ment. Hose which is shipped in coils or bales should be stored so to not subject the hose to excessive surge pressures. Hose should that the coils are in a horizontal plane. not be kinked or be run over by equipment. In handling large size Whenever feasible, rubber hose products should be stored in their hose, dollies should be used whenever possible; slings or handling original shipping containers, especially when such containers are rigs, properly placed, should be used to support heavy hose used wooden crates or cardboard cartons which provide some protection in oil suction and discharge service. against the deteriorating effects of oils, solvents, and corrosive liquids; shipping containers also afford some protection against GENERAL TEST AND INSPECTION PROCEDURES ozone and sunlight. FOR HOSE Certain rodents and insects will damage rubber hose products, and An inspection and hydrostatic test should be made at periodic adequate protection from them should be provided. intervals to determine if a hose is suitable for continued service. Cotton jacketed hose should be protected against fungal growths if A visual inspection of the hose should be made for loose covers, the hose is to be stored for prolonged periods in humidity condi- kinks, bulges, or soft spots which might indicate broken or dis- tions in excess of 70%. placed reinforcement. The ideal temperature for the storage of rubber products ranges The couplings or fittings should be closely examined and, if there from 50� to 70�F (10-21�C) with a maximum limit of 100�F (38�C). is any sign of movement of the hose from the couplings, the hose If stored below 32�F (0�C), some rubber products become stiff and should be removed from service. would require warming before being placed in service. Rubber products should not be stored near sources of heat, such as radia- The periodic inspection should include a hydrostatic test for one tors, base heaters, etc., nor should they be stored under conditions minute at 150% of the recommended working pressure of the of high or low humidity. hose. An exception to this would be woven jacketed fire hose.* During the hydrostatic test, the hose should be straight, not coiledTo avoid the adverse effects of high ozone concentration, rubber or in a kinked position. hose products should not be stored near electrical equipment that may generate ozone or be stored for any lengthy period in geo- Water is the usual test medium and, following the test, the hose graphical areas of known high ozone concentration. may be flushed with alcohol to remove traces of moisture. A regu- lar schedule for testing should be followed and inspection records Hose should not be stored in locations where the ozone level maintained. exceeds the National Institute of Occupational Safety and Health's upper limit of 0.10 ppm. Exposure to direct or reflected sunlight � SAFETY WARNING: Before conducting any pressure tests even through windows � should also be avoided. Uncovered hose on hose, provision must be made to ensure the safety of the should not be stored under fluorescent or mercury lamps which personnel performing the tests and to prevent any possible generate light waves harmful to rubber. damage to property. Only trained personnel using proper tools and procedures should conduct any pressure tests. Storage areas should be relatively cool and dark, and free of damp- ness and mildew. Items should be stored on a first-in, first-out 1. Air or any other compressible gas must never be used as basis, since even under the best of conditions, an unusually long the test media because of the explosive action of the gas shelf life could deteriorate certain rubber products. should a failure occur. Such a failure might result in possible damage to property and serious bodily injury. *Woven jacket fire hose should be tested in accordance with the service test provisions contained in the current edition of National 2. Air should be removed from the hose by bleeding it through Fire Protection Association Bulletin No. 1962 � Standard for the an outlet valve while the hose is being filled with the test Care, Use and Service Testing of Fire Hose. medium. * Reprinted with permission from the Rubber Manufacturers Association (RMA) Hose Handbook, RMA/IP-2/2003. 10
Goodyear Rubber Products
