Friday, 22 March 2013

Regulation 36. Semi-automatic burner system.

                                   P.U.(A) 5/70
                  UNFIRED PRESSURE VESSEL)
                            REGULATIONS, 1970
                       PART II - STEAM BOILERS

Regulation 36. Semi-automatic burner system.

(1) For the purposes of this regulation a semi-automatic burner system is one in which the supply
of oil to the burner is regulated by an automatic device within predetermined limits but the burner
is ignited and the plant shut down by hand.

(2) Every semi-automatic burner system fitted to steam boiler shall comply with the provisions
(i) the automatic device shall so regulate the supply of oil to the burner that the pressure
generated in the steam boiler shall not be greater than its authorised safe working

(ii) there shall be provided, either as a separate control or incorporated in the automatic
device a mechanism to cut off the supply of oil when the authorised safe working
pressure of the steam boiler is reached or exceeded. Such mechanism shall prevent the
further supply of oil to the burner until it has been re-set manually;

(iii) where there is more than one burner in any combustion chamber the automatic
controls shall operate on all burners;

(iv) means shall be provided to cut off automatically the supply of oil to the burner within a
period of sixty seconds from the failure of the flame thereof. Such means shall indicate
visually that the control is working:
Provided that this provision shall not apply to the oil burning equipment of a steam boiler
installed in a thermal power station operated by an electricity undertaking engaged in the
generation and distribution to the public of electricity energy;

(v) no light-operated flame failure device shall be prevented from functioning by
illumination from any source other than the flame of the burner it controls.

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