9/84
EN
• Check that all notices are in place, can be easily read and are not obstructed from view.
• Inspect the vicinity of cylinders for anything introduced since last inspection, which could
aect the continuing safe operation of the manifold
General maintenance should be undertaken in accordance with a planned maintenance
schedule, which should include the following items:
• Leak test all joints using a 0.5% teepol in water solution.
• Examine mounting frames and cylinder securing chains for damage deterioration and security
of attachment.
• Examine tailpipes/high pressure hoses for damage and security of attachment.
• High pressure hoses should receive particular attention to ensure they are secure, not worn
or otherwise weakened.
• Components with limited lifetimes, such as high pressure hoses, should be subjected to a
routine replacement programme.
• Filters are in good condition and not blocked. Filter elements may need to be cleaned or
renewed and pipelines may need to be blown through to remove foreign material.
• Valves to be used in normal or emergency operation are accessible and easy to operate.
Valves at service point’s outlets and purge valves should be checked for gas tightness.
• No item of equipment is overdue for any periodic inspection/test which may be applicable.
• The setting and operation of regulators is satisfactory.
• The necessary safety devices and instruments are fitted, are of the correct type and do not
show signs of deterioration or unauthorised interference.
• The equipment downstream of the outlet point is suitable for further service.
• Check connecting nuts and seating faces are undamaged.
• Check o-rings are undamaged.
• Check gauges operate smoothly and zero correctly.
• Check isolating valves for closure tightness and gland leakage.
• The gas manifold room must always remain thoroughly clean. Materials other than those
required for operating the manifold must not be stored in the room.
• Check that all ventilation grills are free from obstruction and that the extraction system (when
installed) is functioning correctly.
• Ensure that all restrictions on smoking and open fire are strictly enforced.
• Replace all worn or damaged parts with original spare parts. Remember that gaskets, o-rings
and sealing surfaces must be clean and free from damage to work eectively.
Safety note-as part of the planned maintenance special checks should be made to ensure:
All changes (including removal and addition of parts) and extensions conform to the right code
of practice.
Changes in the vicinity of the installation do not aect the safety of the operation e.g. proximity
of electricity to fuel gases, oils and combustibles near to oxygen, illicit use of a pipeline as an
electrical conductor or as a support for other items.
10. SCHEME OF EXAMINATION
GCE recommendations for a Written Scheme of Examination:
EQUIPMENT EXAMINATION IN
TERVAL
GUIDELINES OF WRITTEN
SCHEME
1. High pressure hoses Examine when chang-
ing cylinders, replace
every 5 years
a. Replace with new hose.
b. Record replacement.
2. Copper & Copper
alloys Tailpipes
1 year a. Visual, external examination.
b. Anneal if work-hardened or
replace.
c. Fit new seals where applicable.
d. Record all details of examination.