Page 329 - GoodyearEPIndustrialHose

APPENDIX E
Air &
Multipurpose
General Purpose
Heavy Duty
Push-on
Chemical
Transfer
Cleaning
Equipment
Food
Transfer
Washdown
Marine
Material
Handling
Abrasives
Bulk Transfer
Cement & Concrete
Mining
Petroleum
Aircraft Fueling
Dispensing
Dock
Transfer
Spray
Steam
Vacuum
Veyance
Water
Discharge
Suction &
Discharge
Washdown
Welding
Coupling
Systems
APPENDIX
327
GENERAL INFORMATION
CARE, MAINTENANCE AND STORAGE
General Care and Maintenance
Hose should not be subjected to any form of abuse in service.
It should be handled with reasonable care. Hose should not be
dragged over sharp or abrasive surfaces unless specifically
designed for such service. Care should be taken to protect hose
from severe end loads for which the hose or hose assembly were
not designed. Hose should be used at or below its rated working
pressure; any changes in pressure should be made gradually so
as not to subject the hose to excessive surge pressures. Hose
should not be kinked or be run over by equipment. In handling
large size hose, dollies should be used whenever possible;
slings or handling rigs, properly placed, should be used to
support heavy hose used in oil suction and discharge service.
General Test & Inspection Procedures
An inspection and hydrostatic test should be made at periodic
intervals to determine if a hose is suitable for continued
service. A visual inspection of the hose should be made for
loose covers, kinks, bulges or soft spots which might indicate
broken or displaced reinforcement. The couplings or fittings
should be closely examined and, if there is any sign of
movement of the hose from the couplings, the hose should be
removed from service.
The periodic inspection should include a hydrostatic test for
one minute at 150% of the recommended working pressure of
the hose. An exception to this would be the woven jacketed fire
hose.* During the hydrostatic test, the hose should be straight,
not coiled or in a kinked position. Water is the usual test
medium and, following the test, the hose may be flushed with
alcohol to remove traces of moisture. A regular schedule for
testing should be followed and inspection records maintained.
SAFETY WARNING: Before conducting any pressure tests on
hose, provisions must be made to ensure the safety of the
personnel performing the tests and to prevent any possible
damage to property. Only trained personnel using proper tools
and procedures should conduct any pressure tests.
1. Air or any other compressible gas must never be used
as the test media because of the explosive action of the
hose should a failure occur. Such a failure might result in
possible damage to property and serious bodily injury.
2. Air should be removed from the hose by bleeding it through
an outlet valve while the hose is being filled with the test
medium.
3. Hose to be pressure tested must be restrained by placing
steel rods or straps close to each end and at approximate
10-foot (3m) intervals along its length to keep the hose
from “whipping” if failure occurs; the steel rods or straps
are to be anchored firmly to the test structure but in such
a manner that they do not contact the hose which must be
free to move.
4. The outlet end of the hose is to be bulwarked so that a
blown-out fitting will be stopped.
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
the ends of a hose being pressure tested.
Continued on next page
SAFETY WARNING:
Failure to properly follow the manufacturer’s recommended procedures for the care,
maintenance and storage of a particular hose might result in its failure to perform in the
manner intended and might result in possible damage to property and serious bodily injury.
Hose has a limited life and the user must be alert to signs of impending failure, particularly when the conditions of service
include high working pressures and/or the conveyance or containment of hazardous materials. The periodic inspection and testing
procedures described here provide a schedule of specific measures which constitute a minimum level of user action to detect signs
indicating hose deterioration or loss of performance before conditions leading to malfunction or failure are reached.
General instructions are also described for the proper storage of hose to minimize deterioration from exposure to elements
or environments which are known to be deleterious to rubber products. Proper storage conditions can enhance and extend
substantially the ultimate life of hose products.
*Woven jacket fire hose should be tested in accordance with the service test provisions contained in the current edition of National Fire Protection
Association Bulletin No. 1962 - Standard for the Care, Use and Service Testing of Fire Hose.
Reprinted from RMA Hose Handbook IP-2 Seventh Edition 2003