Page 68 - kursus eBook

DRAFT GUIDELINE ON DOMESTIC GAS PIPING SYSTEM

RECOMMENDED PREVENTIVE MAINTENANCE PROGRAMME
FOR GAS PIPING SYSTEMS

Natural gas and LPG piping

MAINTENANCE ITEMS FREQUENCY

Detailed visual survey for pipe, connections, valves and
1. Every Two Years
equipments by using gas detector or soap liquid.
Detailed visual inspection for pipe support and surrounding
2. Annually
conditions around piping and gas appliances

3. Inspection for PE/Steel transition joints. Annually

4. Inspection and functional test of valves and regulators. Annually

Air-tightness test for leak check testing.
5. Every Three Years

6. Painting & labeling. Every Five Years

Natural gas metering stations and LPG storage facilities.

MAINTENANCE ITEMS FREQUENCY

1. Inspection of abnormalities on metering facilities. Monthly

2. Leak check on pipe connections, fittings, valves and equipment
Six Month
using gas detector or soapy liquid.
Functional test of valves, vaporizers, regulators, pressure gauges,
3. Six Month
earthing/grounding and emergency shut-off valves.

4. Clean oil separator and strainers to bleed of heavy ends. Six Month

5. Housekeeping and washing of station facilities Six Month

6. Piping corrosion prevention. Annually

Every Fifteen
7. Painting and labelling
Months

Every Three
8. Overhaul and soft part change-out
Years

28