Vukazahn Upon fabrication of a hose assembly, the entire assembly configuration shall be visually examined as follows: The hose must not burst, leak nor show signs of fitting separation. Minor cuts and abrasions to fire sleeves may be temporarily repaired using an approved fire sleeve tape under the following conditions: Once put into service, the repaired hose assembly shall then be routinely inspected iaw the current maintenance practice and the tape renewed if it displays fraying or unbonding. On completion avr testing, hyperbaric hoses shall be cleaned iaw ref. Documents Flashcards Grammar checker.
|Published (Last):||23 November 2011|
|PDF File Size:||15.69 Mb|
|ePub File Size:||12.18 Mb|
|Price:||Free* [*Free Regsitration Required]|
Vukazahn Upon fabrication of a hose assembly, the entire assembly configuration shall be visually examined as follows: The hose must not burst, leak nor show signs of fitting separation. Minor cuts and abrasions to fire sleeves may be temporarily repaired using an approved fire sleeve tape under the following conditions: Once put into service, the repaired hose assembly shall then be routinely inspected iaw the current maintenance practice and the tape renewed if it displays fraying or unbonding.
On completion avr testing, hyperbaric hoses shall be cleaned iaw ref. Documents Flashcards Grammar checker. Further advice should be sought from CME or other DAR before using spare rubber hose assemblies whose origin and cure dates are unknown. Hoses operating in vacuum service shall be tested to psig kPa. The maximum working pressure for which a hose is designed.
Original signed by Signature: No hyperbaric hose shall be re-installed if it has not been appropriately capped, bagged and certified. The pressure at which rupture of the hose occurs. For example, a hose manufactured in the second quarter ofdenoted as 2Q04 at repetitive intervals on the layline, has a shelf life that ends on the 30th September The pressure used in the calculation of piping and piping components minimum section thickness.
Non critical hoses other than hyperbaric hose do not need to be tagged and critical hoses identified in paragraph 4 do not require special tagging. Metal hoses that have been welded or brazed into their system shall not be removed for the purpose of post examination hydrostatic testing.
Where segmented socket fittings are used, ensure that the hose butts against the nipple shoulder and that the bolts and nuts, where used, are tight and the segments are evenly spaced. In instances where it is considered inappropriate or unsafe to attach a metal tag to a hose assembly, eg very small hoses or hoses used on electrical equipment this requirement may be omitted provided some other form of hose identification, such as an inscribed ID, is used see para 16 below Page 11 of 16 Hose Installation It is emphasised that the shelf and service life requirements imposed by this directive apply only to synthetic rubber hoses used in critical applications.
Individuals technical representative, has notified us of the unsafe. Class Maintenance Plan, e. Hose In-service Inspections Ships are to maintain a register of all critical fitted hose assemblies subject to lifing iaw paragraph 11 and rubber expansion joints, in which the following minimum qbr shall be held for each individual hose assembly and expansion joint: Reference A is cancelled and replaced by this Technical Directive.
For hyperbaric applications, only approved hoses shall be used. Testing and Replacement of Flexible Piping Devices If any exposed reinforcing fabric is torn, cut or otherwise degraded, the joint should be replaced at the earliest opportunity.
The evidence may consist of any or all of the following: If a critical synthetic rubber hose is provided via the DMO supply chain without an identifiable cure date it may still be used provided it meets the General visual inspection Requirements. That period of time in which a rubber hose is installed and in use. Certain fuel and oil hoses are fitted with protective fire sleeves constructed from fibreglass and coated with iron oxide impregnated silicon rubber.
The radius of a bent section of hose measured to the innermost surface of the curved portion. Robert Henry and  N. Example; 2Q04, which would represent the second quarter ofor 01 April to 30 June Tags shall not be removed from hyperbaric hoses under any circumstances. Page 13 of Fire Sleeve Rejection Any combination of letters, numbers or symbols used by the manufacturer to identify the period of manufacture of a rubber product.
Rubber expansion joints in normally unmanned spaces should be replaced at least every 6 years. This is acceptable but it is not a mandatory requirement and should not be demanded on Navy stores supplies. All other hyperbaric hoses shall be tested and cleaned iaw their approved configuration drawing requirements and Planned Maintenance Schedules. Testing and Replacement of Flexible Piping Devices In manned spaces they should be replaced no later than 12 abe after installation and internally inspected in accordance with the appropriate planned maintenance requirement during each 6 year period.
A device for connecting two different mechanical connections or seal system for the passage of liquid or gaseous materials. For example, if the shelf life of a hose is extended from 4 to 6 years, then the maximum service life should be reduced from 12 to 10 years Users should be aware of this condition by comparing the Cure Date and Installation Date recorded on the hose tag. A fitting connecting two sections of hose to form a 90o hose assembly.
In the absence of this data the hose should be tested iaw the instructions provided above. Ensure that the pressure ratings of the hose end fittings and the hoses are comparable. The innermost layer of a hose. Water Systems Chilled fresh water Portion where single hose failure results in loss of electronic cooling. TOP Related Posts.
ABR 6492 PDF
Nikoshura They do not overlap. A flexible conduit of circular cross section, and usually consisting of an inner element tubereinforcement element carcass and an outer element cover. The maximum sustained pressure acquired during an impulse cycle. The strength member of the hose containing fabric, cord or wire reinforcement. The criticality is used only to determine the expected service life cycle of rubber flexible hose assemblies iaw Table 1.
NBR 6492 -REPRESENTAÇÃO DE PROJETOS DE ARQUITETURA
Faelkree The evidence may consist of any or all of the following: On these occasions, the fabrication abt the hose shall be in accordance with a suitably approved standard or procedure. The prototype hose assembly that is subjected to a qualifying pressure that is higher than the proof pressure is not to be used as a working hose assembly. The periodicity of inspection should be at least quarterly, with special attention being given to the large diameter joints installed in the sea connections to and from main condensers. This periodicity shall be in accordance with the appropriate planned maintenance requirement but should be at least annually. Hyperbaric hoses shall be labelled with the identification abf below. The classification for air pressure categories are as defined at Chapter Page 6 of 16 23 of ABR or reference B, for hyperbaric hoses: A certificate from an accredited quality organisation, certifying the suitability of the hose for its intended use.