PHIVOLCS analyzes possible hazards of Bataan Nuclear Power Plant

admin   •   December 7, 2016   •   20256

Bataan Nuclear Power Plant.

Bataan Nuclear Power Plant.


Despite the seemingly precarious location of Bataan Nuclear Power Plant at the southwest slope of Mt. Natib, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said the possibility of another eruption is low.

This is based on the charcoal deposit that they have tested which indicated that the last eruption was 27,000 years ago.

“Nag-try na kaming i-map out ‘yung mga deposito, tiningnan ‘yung mga bata. Masyadong makapal. Lumang-luma ‘yung mga deposito na nakita ng ating mga geologist at kung io-operate ‘yan, kailangang maglagay ka ng mga sensors na pang-monitor ng earthquake activity kung sakali man,” PHIVOLCS Director Renato Solidum said.

(We tried to map out the deposits and our geologists have seen that the deposits are too thick and old and if the [BNPP] will be opened for operation, sensors should be installed to monitor earthquake activity just in case.)

The plant is also less likely to be affected by a tsunami because it is located 18 meters above the shore while the possible height of a tsunami that may hit the area is only up to 8 meters.

PHIVOLCS also found no fault line under the nuclear plant and the nearest is the Iba fault which is 60km away.

But even if this fault will move, including other faults like Manila trench, Philippine fault and West Valley fault, it can withstand the intensity if the plant’s design was strictly followed.

“Assuming na maayos ‘yung pagkagawa ng planta, ‘yung disenyo nga ay mas mataas pa sa inaasahang paglindol,” Solidum said.

(Assuming that the plant is well constructed, it is designed to withstand an expected intensity of a quake.)

Meanwhile, the Philippine Nuclear Research Institute (PNRI) said, it would take 5 years to revive the plant to operating level.

READ: Group fears $1-billion cost to revive Bataan Nuclear Power Plant will be put on consumers’ tab

The PNRI is the regulatory body that will ensure the safety of a nuclear plant’s operation based on set standards.

They said that location and structure are important considerations since its last submitted safety analysis report was way back in the 70’s.

“Acceptable naman ‘yung kanilang study na ‘yun (That study was acceptable). But that was at that time the 1970’s. So, if there is new evidence, there are new studies then we have to look at it,” said PNRI Nuclear Regulatory Division chief Teofilo Leonin, Jr.

The 1990 earthquake did not damage the plant even when Mt. Pinatubo erupted.

Nuclear plants with the same feature as the BNPP are still operating in Korea, Brazil and Yugoslavia. — Rey Pelayo | UNTV News & Rescue

Magnitude 5.1 quake rattles Occidental Mindoro

Robie de Guzman   •   December 21, 2021

A magnitude 5.1 quake jolted parts of Occidental Mindoro and nearby areas on Tuesday, the Philippine Institute of Seismology and Volcanology (PHIVOLCS) said.

In a bulletin, PHIVOLCS said the epicenter of the quake was located 15 kilometers northeast of Sablayan, Occidental Mindoro. It occurred at 12:08 p.m.

The temblor was a tectonic in origin and had a depth of 15 kilometers.

PHIVOLCS said the quake was felt at the following areas:

• Intensity IV – Sablayan and Rizal, Occidental Mindoro
• Intensity III – Abra De Ilog, Santa Cruz and Calintaan, Occidental Mindoro; Calapan City and Bansud, Oriental Mindoro
• Intensity II – Makati City; Batangas City; Baco, Oriental Mindoro
• Intensity I – Puerto Galera, Oriental Mindoro; Tingloy, Batangas;

“This is an aftershock of the October 03, 2021 M5.3 Sablayan, Occidental Mindoro Earthquake event,” the agency noted in its report.

Damage and aftershocks are to be expected following the quake, PHIVOLCS said.

Magnitude 5.5 quake hits Paluan, Occidental Mindoro — Phivolcs

Maris Federez   •   December 13, 2021

MANILA, Philippines — A magnitude 5.5 earthquake hit the town of Paluan in Occidental Mindoro at 5:12 in the afternoon on Monday (December 13).

The Philippine Institute of Volcanology and Seismology (Phivolcs) said the tremor was tectonic in origin with a depth of 104 kilometers.

Reported intensities were as follows:

Intensity IV- Calatagan, Batangas; Puerto Galera, Oriental Mindoro;

Intensity III – Batangas City, Lemery, Malvar and Bauan, Batangas; Tagaytay City and Amadeo, Cavite; Quezon City; City of Manila and Pasay City

Intensity II- Taguig City; Mandaluyong City; Makati City; Caloocan City; Malabon City; Tanay, Rizal; San Felipe, Zambales

Instrumental Intensities, on the other hand, reported the following:

Intensity IV – Calatagan, Batangas; Calapan City, Oriental Mindoro

Intensity III – Tagaytay City, Cavite; Plaridel, Bulacan; Batangas City; San Jose, Occidental Mindoro

Intensity II – San Ildefonso, Calumpit, and San Rafael, Bulacan; Carmona, Cavite; Muntinlupa City; Olongapo City; Malolos City, Bulacan; Dolores, Quezon; Talisay, Batangas

Intensity I – Pasig City; Quezon City; Las Piñas City; Malabon City; Marikina City; Guagua, Pampanga; Cabanatuan City, Nueva Ecija; Mulanay and Mauban, Quezon; Pandi and Marilao, Bulacan

Phivolcs said that there was no notable damage from the quake but aftershocks are likely to take place.

PHIVOLCS: Magnitude 5.3. quake jolts Batangas, others areas

Robie de Guzman   •   December 13, 2021

MANILA, Philippines — An earthquake with a magnitude of 5.3 hit parts of Batangas and other nearby areas, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said Monday.

In its earthquake bulletin, the PHIVOLCS said the quake was recorded approximately 24 kilometers southwest of Calatagan Batangas around 5:12 p.m.

The temblor had a depth of 99 kilometers and was tectonic in origin.

PHIVOLCS said Intensity 3 was felt in Quezon City while intensity 2 was felt in San Felipe in Zambales.

Instrumental Intensity 1 was felt in Quezon City, Tagaytay City, Batangas City, and Calatagan.

PHIVOLCS said no damage is expected from the quake but aftershocks are likely to occur.


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