WHS - Mines and Petroleum Regulations 2022 Flashcards

Question

S68 - CDE - Sampling

Answer 1

MO must establish procedures for - regular inspection/sampling/analysis of roadway dust layers - Ensuring analysis is carried out by accredited lab. - application of stone dust or another inhibitor - intervals at which dust sampling/analysis will be carried: - face zone = monthly - outbye return / conveyor = 3 Months - other outbye roadway = 6 months - keeping of records (date/location/content of sample/methods used), reason for use of spot sampling, location of spot sampling, mine plan showing content - treatment of float dust - Strip sampling preferred and comply - length of roadway 45m - >5mm depth - equal width and 5m apart - fresh sample points - dust from floor sampled separately if believed different content - Failures to be retreated - Panel / LW within 24hrs - Intakes/returns within 7 days

Answer 2

Comply with S14 by: - manage risk to H/S associated with Spon Com - Implement procedures to minimise potential exposure of persons to contaminants produced by Spon Com - Ensure gas analysis and sensory indicators of spon com are developed specifically for the mine - keep records - All incorporated in the PHMP for Spon Com

Answer 3

- Comply with S14 manage risk to H/S associated with sealing: - Consideration is given to the conditions of the place being sealed - presence of flammable gas - potential ignition sources - possibility of pressure behind seals - duration of seal - When mine or part of is sealed during an emergency - sealing carried out as per VCP and ERP - risks to H/S at mine are managed during emergency sealing - notification is provided to Regulator in approved form asarp - Airlocks installed at entrances to mine are tested 12monthly - Connection points for inertisation equipment are tested at appropriate intervals to ensure fit for purpose and necessary facilities are available - modelling is conducted every 12mnthjs to validate inertisation locations

Answer 4

- Main fan not to be positioned underground - Ventilation for LW = 4m3/s per m of extraction - Ventilation for CM = 0.3m/s per m/3 - Methane = 0.25% any point on intake side of 100mm outbye of most completed line of cut throughs / longwall / shortwall - VCP to specify minimum Q of air required to continue power supply - If minimum Q for part of the mine is not supplied - supply of power to plant to be cut by quickest means - immediate action to supply required minimum Q - Aux fans to be switched off if main ventilation system fails - Procedures inplace for using Booster/Aux/Scrubber fans - effective airlocks provided and maintained at each shaft: - used for winding or for transport - connected to main returns - Every main fan has pressure gauge and device that monitors and records at all times the volume passing through it -Each surface fan and booster fan is fitted with 1 or more device for - monitor condition of fan (static) - trigger an alarm when deviating from normal range - record alarm - display alarm Diesel Engines - greater of 0.06m3/s for each kilowatt or 3.5m3/s - VCP and ventilation system audited every 12mnths by statutory function Ventilation Auditor - Ventilation Auditor to provide report: - system implemented as per VCP - system achieving objectives of VCP - how effective system is achieving VCP objectives - Ventilation Plan to be reviewed and revised every month

Answer 5

- MO must ensure ventilation system for the mine provides air that is of sufficient quality to ensure general body of air where person work and travel has a concentration alarp and is no greater then 2% - Afarp determine locations of hazardous zones, ensure workers are aware of locations - ensure control measures are implemented for each hazardous zone to manage risk to H/S of ignition of methane - Methane monitoring plant provide must comply with: - detection heads located at points to detect presence of methane - clearly display values to person having responsibility for monitoring - give audible or visual signals / alarms if exceeded certain levels - provide for capture/storage/retrieval and dissemination of data - provide for recording of events of alarms / signals or cutting of power supply - Internal Combustion Engine that operates in return is equipped with a continuous methane monitor that gives audible or visible alarm at 1%. MO must ensure I.C.E is withdrawn from return when concentration exceeds 1% and less then 1.25%. And is shut down when concentration is 1.25% or greater - MO must ensure face equipment is equipped with a continuous monitor that, gives an audible or visible alarm when general body concentration is 1% or greater. cuts the power supply to the face machine when the general body is 1.25% or greater. If face machine has monitor installed close to heads of machine, cuts the power supply when concentration is 2% or greater - MO must ensure each face at which Longwall, shortwall or miniwall operations take place is equipped with a continuous monitor and is located so that it can detect methane where mining operations take place, tripping power supply to the face if the concentration of methane in the general body is 1.25% or greater. - MO must ensure afarp a continuous methane monitor that fails gives an audible or visible signal and cuts the supply of power to the plant it is monitoring

Answer 6

MO must ensure the following. - gas content of the air in the mine is monitored. - gas content monitoring system is implemented that identifies. - locations at which is gas content is to be monitored. - sets out for each gas, the alarm levels and the alarm triggers to cut power supply to place, plant or both. - authorizations to set or make changes to alarm levels. - who is responsible for acknowledging alarms. - who is responsible for communicating alarm level and initiating response. - response plans to be activated as a result of an alarm. - how actions to the response to an alarm are documented. - Gas content monitoring system is documented. - Accurate plan showing positions of gas monitoring plant is maintained. - SMS for the mine specifies the alarm level for each type of gas. - records are kept when an alarm is reached. - barometer is provided at surface. - gas monitoring equipment is calibrated and maintained. - detection heads are placed to best detect accurate readings. - gas monitoring plant has an alternate power supply gas. - monitoring plant must be explosion protected. - gas monitoring plant automatically activates an alarm and cuts the supply of power to plant. - gas monitoring plant must continuously trend: - ratio of carbon monoxide and oxygen (Grahams ratio). - ratio of carbon monoxide and carbon dioxide. - ability of gas to form an explosive mixture in air. - fixed real time monitors for the detection of combustion on the return side of each conveyor drive. - gas content real time monitoring of the return air at or near exhaust entries and outbye end of ventilation splits, unsealed goafs and waste workings. - fixed real time monitoring for methane at - general body of air in each main return airway. - general body of air in each return airway in a ventilation split. - air passing through a main or booster fan. Carbon dioxide is only monitored if given written direction from the regulator to do so.

WHS - Mines and Petroleum Regulations 2022 Flashcards

(30 cards)